Propeller

Propeller (pronounced pruh-pel-er)

(1) A person or thing that propels.

(2) A device with a hub to which are attached evenly spaced & shaped radiating blades, rotating on a shaft to pitch against air or water to propel an aircraft, ship etc.

(3) A wind-driven (usually three-bladed) device that provides mechanical energy, as for driving an electric alternator in wind plants (not a universal use).

(4) A steamboat thus propelled; a screw steamer (now rare).

(5) In fishing, a spinnerbait.

1780: The construct was propel + -er and the original sense was “one who or that which that propels”, an agent noun from the verb propel.  The verb propel was a mid-fifteenth century form from the Middle English propellen (to drive away, expel), from the Latin propellere (push forward, drive forward, drive forth; move, impel), the construct being pro- (the prefix here use in the sense of “forward direction, forward movement”) + pellere (to push, drive), from the primitive Indo-European root pel- (to thrust, strike, drive).  The meaning “to drive onward, cause to move forward” emerged in the 1650s.  The –er suffix was from the Middle English –er & -ere, from the Old English -ere, from the Proto-Germanic -ārijaz, thought most likely to have been borrowed from the Latin –ārius where, as a suffix, it was used to form adjectives from nouns or numerals.  In English, the –er suffix, when added to a verb, created an agent noun: the person or thing that doing the action indicated by the root verb.   The use in English was reinforced by the synonymous but unrelated Old French –or & -eor (the Anglo-Norman variant -our), from the Latin -ātor & -tor, from the primitive Indo-European -tōr.  When appended to a noun, it created the noun denoting an occupation or describing the person whose occupation is the noun.  The alternative spelling propellor dates from the early days of aviation in the first years of the twentieth century and is now extinct.  The standard abbreviation is “prop”, the use noted from military aviation since 1914.  Propeller is a noun; the noun plural is propellers.

Although the concept was used in antiquity and inventors and others (most famously Leonardo da Vinci (1452–1519))  had for centuries experimented, the use of the word in mechanical engineering dates from 1809 and was from nautical design describing the application of a “device for moving vessels on or under the water”.  In aircraft design the theory of the use of “propeller” appears in papers and drawings in the 1840s (in what were then described as “flying machines”) and models were built which demonstrated a “proof of concept” although it would be decades before lightweight engines of sufficient power existed to allow experiments in aerodynamics and construction to be powered.  The first known rendering of an aircraft propeller in a recognizably modern form dates from 1853.  The modern propeller uses two or (usually) more twisted, airfoil-shaped blades mounted around a shaft which are spun to provide propulsion of a vehicle through water or air, or to cause fluid flow, as in a pump.  The lift generated by the spinning blades provides the force that propels the vehicle or the fluid although this lift does not of necessity have to induce an actual upward force; its direction is simply parallel to the rotating shaft.

Lindsay Lohan getting off the propeller driven (technically a turbo-prop) NAPA Shuttle, The Parent Trap (1998).

The term “to disembark” was borrowed from nautical use and of late "to deplane" has entered English which seems unnecessary but the companion “to disemplane” seems more absurd still; real people continue to “get on” and “get off” aircraft.

The terms “impeller” & “propeller” both describe devices which use various implantations of the “rotating blade(s) design and are used in mechanical systems to take advantage of the properties of fluid dynamics to harness specific energy for some purpose.  A propeller is a type of rotating device with blades designed to propel or move a fluid (typically a gas or a liquid) by generating thrust; they are most associated with marine vessels, aircraft and some industrial applications.  In aircraft, propellers can be attached to wing-mounted engines or mounted just about anywhere on a fuselage although historically a location at the front has been most common.  In marine applications, propellers have on specialized vessels been located to the sides of the hull but they almost always emerge at or close to the stern.  An impeller is a rotating component with blades or vanes (almost always enclosed in a housing), typically used for fluid or air distribution, such as a pump or a compressor, the primary purpose being to increase flow or pressure.  The classic impellers those in centrifugal pumps where they spin, creating a flow of fluid (liquid or air) by imparting centrifugal force to the substance; in practice, impellers such accelerate liquids are more common.

So an impeller & propeller do much the same thing, using blades to propel some form of fluid.  The use of different terms is helpful because in practice they are very different devices and the distinction that one is external and the other located within a housing is handy and the origin of that seems to lie in the construct of impeller which came first, dating from circa 1680 (as an agent noun from the verb impel) in the sense of “someone or something which impels”.  What the design of an impeller does is use the energy from the rotation to increase the flow or pressure of the fluid and it that it’s the reverse of a turbine, the rotation of which extracts energy from, and reduces the pressure of the flow.  Engineers also have a number of highly technical rules about what is and is not defined as an impeller base on the whether the entry and exit of the fluids occur axially or radially but it seemed impossible to construct such definitions as absolutes so for most the simpler distinctions are more helpful.  In engineering, impellers have been recorded as a machine or component name since 1836.

News Corp website 22 January 2024.  To refer to a jet engine’s nacelle as a propeller could (almost) be defended on the basis it’s the jet engine which “propels” the aircraft but this is more likely an example of (1) the decline in the quality of journalists and (2) what happens when there are no sub-editors to correct the mistakes.  In time, artificial intelligence (AI) should improve things.    

The verb impel dates from the early fifteenth century and was from the Middle English impellen, from the Latin impellere (to push, strike against; set in motion, drive forward, urge on), the construct an assimilated form of in- (into, in, on, upon), from the primitive Indo-European root en- (in) + pellere (to push, drive), from the primitive Indo-European root pel- (to thrust, strike, drive).  The construct of the Latin impellō was in- +‎ pellō (push, drive), from the Proto-Italic pelnō or pelnaō, a nasal-infix present derived from the primitive Indo-European pelh- (to drive, strike, thrust).  The Latin prefix –in could be appended to create a negative (un-, non-, not etc) but here was used as an intensifier, another possible meaning (in, within, inside) coincidental to the mechanical devices being usually mounted within housings.

Propellers and impellers both use blades (although those of the latter are often in the form of a single piece wither cast, molded, or (occasionally) forged.  Turbines also use blade-like parts but these are called vanes and an industry which seems unable to decide on terminology is the burgeoning business of wind-power; the huge rotating assemblies on wind turbines are referred to variously as vanes, blades or rotors.  Rotor blades are familiar for the use in helicopters which is essentially an airframe where a large-scale propeller sits atop the structure, pointing upwards and rather than “propeller blades”, the accepted term is “rotor blades”, the design of which permits both lift and directional thrust although some exotic multi-engined machines have rotors in housings which, to maximize performance, can themselves be rotated to operate as conventional propellers.

Supermarine Seafang (1946) with contra-rotating propellers.  The Seafang was powered by the Rolls-Royce Griffon and was the final evolution of the Spitfire-derived Seafire and Spiteful, the trio all designed for use on Royal Navy aircraft carriers, the series enjoying success despite the basic design being hampered by the narrow undercarriage which made landings a challenge (something corrected on the Spiteful & Seafang).  Series production of the Seafang was contemplated but eventually only 18 were built because the jet-powered de Havilland Sea Vampire proved capable of carrier operations, surprising some at the Admiralty who doubted the jets could operate from anywhere but land.

The evolution of aircraft influenced propellers.  Once they had been fashioned from wood before the need for faster, more efficient shapes dictated the use of aluminium or other light metals.  By the time the first modern monoplane fighters appeared in the mid 1930s propellers were still two-bladed but as power increased over the years (something which accelerated during World War II (1939-1945)), three, four and five-bladed solutions were engineered.  The rising output however, although it permitted higher performance, created challenges for engineers, notably the “torque effect” which meant a tendency to cause the aircraft to roll in the direction of the propeller’s spin, a problem especially serious during take-offs.  In twin-engined aircraft the solution was to have the propellers rotate in opposite directions but in airframes with a single power-plant, sometimes used were contra-rotating propellers which, although introducing additional complexity and demanding additional maintenance, did offer advantages including: (1) harnessing more of an engine’s power, (2) increased thrust efficiency by a reduction in energy losses, (3) counteracting the torque effect, (4) improved low-speed manoeuvrability and ground-handling and (5) improved acceleration and climbing performance.

A flight of Republic P-47D Thunderbolts with under-wing drop-tanks.

The propeller also influenced other aspects of the aircraft.  When the prototype Republic P-47 Thunderbolt (1941-1945) first took to the air, it was the largest, heaviest single-seat piston-engined fighter ever produced (a distinction it still enjoys today).  Even the early versions used an engine rated at 2000 horsepower (later this would rise to 2800) and to harness this output demanded a large propeller.  The 12 foot (3.7 m) diameter of this four-bladed monster meant the landing-gear had to be extraordinarily long and the only way it could be accommodated was to have them retract inward, otherwise the heavy wing armament (8 x .50 inch (12.7 mm) M2 Browning machine guns (425 rounds per gun)) wouldn’t have fitted.

Chrysler XI-2220 V16.  The splined shaft is where the propeller attaches.

With things like the Thunderbolt, the Hawker Tempest and the later Supermarine Spitfires (and its derivatives), the piston-engined fighter achieved its final evolutionary form, the jet engine offering a path to performance unattainable while the physics of propellers imposed limits.  However, had the use of the A-Bombs not ended the war in 1945, development of the propeller aircraft would have continued because the early jets lacked thrust and reliability as well as suffering a rate of fuel consumption which rendered them unsuitable for long-distance operations.  With the war against Japan envisaged as lasting well into 1946, development of faster, more powerful piston engines continued although, given the parlous state of the Japanese military, it’s dubious at least there was much of a rationale for this but the military industrial complex is a creature of inertia and Chrysler’s research had perfected a new aero-engine for the Thunderbolt.  The XI-2220 was a 2,220 cubic inch (36.4 litre) V16 which was rated at a basic 2450 horsepower with some 4000 hp available when tuned for wartime use but with the end of the conflict, all such developments were cancelled and attention switched to the brave new world of jets and swept wings.  Thus ended the era of the big propeller-driven fighters, the V16 stillborn, as was the other extraordinary aero-engine on the drawing board: Britain's 32-cylinder Napier-Sabre H-32 which was a scaled-up version of their H24.

Skeg

Skeg (pronounced skeg)

(1) In shipbuilding, a fin-like projection supporting a rudder and protecting the propeller(s) at its lower end, located abaft a sternpost or rudderpost.

(2) In the design of smaller boats, an extension of the keel, designed to improve steering.

(3) In the slang of naval architects (in certain contexts), a stump or branch (the after-part of a ship's keel).

(4) In the slang of the General Motors (GM) stylists, a “lower fin”, matching the upper on the rear of 1961-1962 Cadillacs.

(5) The fin which acts as a stabilizer on a surfboard.  To suffer some injury after being hit by one of these fins is to be “skegged”.

(6) In Australian slang, a surfer; a person who leads the lifestyle of a surfer (used also derisively in the form “fake skeg” of those who adopt the style an appearance without actually surfing.

(7) A type of wild plum (obsolete).

(8) A kind of oat (obsolete).

(9) In Northern English dialectal use, a look or glance.

(10) In many cultures, a slang term applied to youth suggesting slovenliness, a predilection to petty crime and other anti-social behavior; also used widely in Scottish slang for a surprising variety of purposes including legs, trousers, dirt, scotch eggs, sex and women of loose virtue.

1590–1600: From a dialectal term for a stump, branch, or wooden peg, from the Dutch scheg (cutwater), of Scandinavian origin and related to the Swedish skog and the Old Norse & Icelandic skegg (projection on the stern of a boat).  In some Nordic languages, skegg means “beard” and was from the Old Norse skegg, from the Proto-Germanic skaggiją, from the primitive Indo-European skek, kek-, skeg & keg- (to jump, skip, move, hurry).  The name of the English coastal town of Skegness is though a construct of the Old Norse skegg (beard) + -nes (headland) and was thought a reference to the geography, the original settlement situated farther east at the mouth of The Wash (thus jutting out like a beard from a face).  A link with the Old Norse name Skeggi is thought unlikely.  The skegs of nautical architecture should not be confused with the homophone Sceggs, the acronym for students of Sydney Church of England Girls Grammar school (S.C.E.G.G.S.), seen also in the adjectival forms sceggesque & sceggish (one whose style suggests something similar to the stereotypical student of the school).  Skeg is a noun; the noun plural is skegs.

Lindsay Lohan in wet suit, with surfboard, Malibu, 2011.  The stabilizing skeg is the black protrusion at the back of the board.

On nautical vessels, skegs where they exist fulfill a significant function but they are not an essential part of hull design.  A skeg is an external structural feature, a vertical tapering projection permanently fixed at the aft, usually close to the centre-line.  Most are located in front of the rudder and structurally can often be considered a sternward extension of the keel (the internal, longitudinal members which lend much strength of the hull).  Although in military vessels there are additional functions, the moist significant contribution of a skeg is in hydrodynamics, a skeg designed to influence the flow patterns and thus affecting the dynamics of both the rudder (which is usually in line with the skeg) and propeller(s).  The design is thus a finely tuned equation because while a skeg inherently induces drag, the way it alters the flow pattern can reduces the drag and resistance suffered by the rudder and propeller(s), essentially by transforming the turbulent characteristics of the flow to laminar at the stern.  Historically, skegs were a vital component in maintaining a course and that’s still an important consideration in smaller vessels but in larger craft, improved rudder and advanced navigational as well as stabilization technologies like thrusters have meant skegs are no longer of the same significance in maintaining directionality.

An US Navy Iowa class battleship, showing the inner set of propeller shafts wholly enclosed in a pair of skegs.  On the big ships, the skegs were designed also as load-bearing supports while in dry-dock.

In the modern age, skegs became an unusual feature on warships, a relative few so equipped and the designs varied, some with only a few of their shafts inside skegs while others encased all.  While the traditional design imperatives were shared with other ships, for navies, they also offered the advantage of affording some degree of protection for rudders and propellers against torpedo attack.  Historically, another important attribute of skegs was what they add to a hull’s structural strength, making the (inherently weaker) stern resistant to outside forces and all the last of the US Navy’s dreadnoughts featured skegs.  Their hulls narrowed towards the stern and to save weight lacked the sternpost plates the British, German and Japanese navies always fitted to their battleships and the skegs compensated for this, offering a hull with similar rigidity.

The US Navy’s South Dakota class battleships were fitted with an unusual set of skegs, the design dictated by the relatively short hull, the large outboard skegs helping to reduce the adverse effects of fluid dynamics induced by the hull’s abrupt end.

However, advantages in engineering and metallurgy meant much of the functionality afforded by skegs could be achieved in other ways and skegs became unfashionable in naval architecture.  The modeling and simulations made possible by supercomputers meant hull designs could be rendered which mastered the turbulence caused by fluid dynamics so rudders and propellers were less affected so the skeg was in many cases a source of performance-sapping skin-friction drag with little compensating benefit.  Indeed, not only did this hamper performance, in some cases excessive vibration was caused, something which could only to a degree be ameliorated by changes to the propellers’ configurations.

Cadillac’s Skegs, 1961-1962

Cadillac Coupe DeVille, (1959, left & 1960 right).

The 1959 Cadillac’s tail-fins are the best remembered and most emblematic of the brief, extraordinary era during which the absurdly macropterous flourished.  They’re rightly known as “peak-fin” but it’s a myth they were the tallest because, measured from the ground, those on the 1961 Imperial are just under an inch (25 mm) more vertiginous.  The attractions of the style however were fading and in 1960, Cadillac and Chrysler (Ford never really got involved) began to tone them down.  Another cultural phenomenon is that because of the large number of pink 1959 Cadillacs which now exist, many assume they were a common sight when new, the things perhaps made memorable by the sight of the one owned by the admirable Jayne Mansfield (1933–1967).  However, the factory never made a pink 1959 Cadillac and in the era, it was only in 1956 such a color was on the option list and Ms Mansfield had one of those while her 1959 convertible received a custom re-paint.

Cadillac Coupe de Ville, (1961, left & 1962 right).

For the 1961 & 1962 range the fins became lower still but in compensation, the design staff added a lower fin and these, informally they called “skegs”.

1961 Cadillac Coupe de Ville, (left), one of the design proposals for 1961 (centre) & captured German V2 rocket (right).

While of course an extravagance, the skegs could have part of something even wilder because among the design proposals which emerged from the General Motors Advanced Design Studios was one which clearly was the ultimate expression of the motif of the 1950s which borrowed so much from the aerospace industry,  The proposed fins essentially were those of ballistic missiles which for decades were an evolution from the German Vergeltungswaffen zwei (V-2), developed first by the German military with the code name Aggregat 4 (A4).  Vergeltungswaffen is translated variously as "retaliatory weapons" or "reprisal weapons" but in English use is often written as “vengeance weapons”.  Aerodynamically, presumably the proposal has something to commend it and it proceeded far enough into the selection for an expensive, full-sized clay model to be rendered (one wonders what the rejected sketches looked like) but ultimately the longer though somehow more restrained skegs were preferred.

The 1961 Cadillac: The long (left) and slightly less long (right) of it.

One quirk of Cadillac’s brief embrace of the skeg was there were two iterations: skeg long and skeg short.  Whether in response to or in anticipation of some owners preferring their Cadillac in a more conveniently sized package, between 1961-1963 a “short-deck” option was made available on certain body styles.  Offered first on the six-window Sedan de Ville, an encouraging 3,756 were built so the option was in 1962 offered on the four-window Sixty Two Town Sedan but sales actually dropped to 2600, the decline in interest confirmed the next year when only 1575 of the four-window Park Avenue Sedan de Ville were sold.  Using the same 129.5 inch (3289 mm) wheelbase as the regular models but eight inches (200 mm) shorter in overall length (215 vs 223 inches (5461 vs 5664 mm)), space utilization was obviously a little better but the market had spoken.  With fewer than eight-thousand of the short-deck models sold across three seasons while the standard editions shipped in the tens of thousands, the flirtation with (slightly) more efficient packaging was abandoned for 1964; in the course of the following decade, Cadillacs would grow another seven inches (178 mm) and gain over 400 lb (181 kg).

For 1963, the short-deck models returned for another dismal season but the skegs were abandoned, never to return.  The fins however the design studio found harder to forsake, conscious perhaps it was on the 1948 Cadillac they’d first appeared.  Then, modestly sized, they’d been an allusion to the tail-planes used on the twin-boomed Lockheed P-38 Lightning (1939) but the fashion had passed and the fins had to go so, inch by inch, there was a retreat from the heights and exuberance of 1959 until in 1966 the fins were vestigial, a hint which for decades would be retained.

A gang of four Sceggs, Sydney, Australia.

Rat

Rat (pronounced ratt)

(1) In zoology, any of several long-tailed rodents of the family Muridae, of the genus Rattus and related genera, distinguished from the mouse by being larger.

(2) In (scientifically inaccurate) informal use, any of the numerous members of several rodent families (eg voles & mice) that resemble true rats in appearance, usually having a pointy snout, a long, bare tail, and body length greater than 5 inches (120 mm).

(3) In hairdressing, a wad of shed hair used as part of a hairstyle; a roll of material used to puff out the hair, which is turned over it.

(4) In the slang of certain groups in London, vulgar slang for the vagina.

(5) As “to rat on” or “to rat out”, to betray a person or party, especially by telling their secret to an authority or enemy; to turn someone in.

(6) One of a brace of rodent-based slang terms to differentiate between the small-block (mouse motor) and big-block (rat motor) Chevrolet V8s built mostly in the mid-late twentieth century but still available (as "crate" engines) from US manufacturers.

(7) As RAT, a small turbine that is connected to a hydraulic pump, or electrical generator, installed in an aircraft and used as a power source.

(8) Slang term for a scoundrel, especially men of dubious morality.

(9) In the criminal class and in law enforcement, slang for an informer.

(10) In politics, slang for a person who abandons or betrays his party or associates, especially in a time of trouble.

(11) Slang for a person who frequents a specified place (mall rat, gym rat etc).

(12) In hairdressing, a pad with tapered ends formerly used in women's hair styles to give the appearance of greater thickness.

(13) In the slang of blue-water sailors, a place in the sea with rapid currents and crags where a ship is prone to being broken apart in stormy weather.

(14) In zoology (in casual use), a clipping of muskrat.

Pre 1000: From the Middle English ratte, rat & rotte, from the Old English ræt & rætt, and the Latin rodere from the Proto-Germanic rattaz & rattō (related also to the West Frisian rôt, the German Ratz & Ratte and the Swedish råtta & the Dutch rat), of uncertain origin but perhaps from the primitive Indo-European rehed- (to scrape, scratch, gnaw).  Zoological anthropologists however point out it’s possible there were no populations of rats in the Northern Europe of antiquity, and the Proto-Germanic word may have referred to a different animal.  The attestation of this family of words dates from the twelfth century.  Some of the Germanic cognates show considerable consonant variation such as the Middle Low German ratte & radde and the Middle High German rate, ratte & ratze, the irregularity perhaps symptomatic of a late dispersal of the word, although some etymologists link it with the Proto-Germanic stem raþō (nom); ruttaz (gen), the variations arising from the re-modellings in the descendants.

Mall rats.  In North America and other developed markets, there is now less scope for habitués because changing consumer behavior has resulted in a dramatic reduction in the volume of transactions conducted in physical stores and some malls are being either abandoned or re-purposed (health hubs and educational facilities being a popular use).  

The human distaste for these large rodents has made rat a productive additive in English.  Since the twelfth century it’s been applied (usually to a surname) to persons either held to resemble rats or share with them some characteristic or perception of quality with them. The specific sense of "one who abandons his associates for personal advantage" is from the 1620s, based on the belief that rats leave a ship about to sink or a house about to fall, and this led to the meaning "traitor” or “informant" although, perhaps surprisingly, there no reference to rat in this sense prior to 1902 where as the modern-sounding sense of associative frequency (mall-rat, gym-rat etc) was noted as early as 1864, firstly as “dock-rat”.  Dr Johnson dates “to smell a rat”, based on the behaviour of cats, to the 1540s.  Sir Boyle Roche (1736-1807), was an Irish MP famous for mangled phrases and mixed metaphors, of the best remembered of which was “I smell a rat; I see him forming in the air and darkening the sky; but I'll nip him in the bud".  There’s the rat-terrier (1852), the rat-catcher (1590s), the rat-snake (1818), rat-poison, (1799), the rat trap (late 1400s), the rat-pack (1951) and rat-hole which in 1812, based on the holes gnawed in woodwork by rats meant “nasty, messy place”, the meaning extended in 1921 to a "bottomless hole" (especially one where money goes).  Ratfink (1963) was juvenile slang either coined or merely popularized by US custom car builder Ed "Big Daddy" Roth (1932-2001), who rendered a stylised rat on some of his creations, supposedly to lampoon Mickey Mouse.

Cricket's most infamous rat (mullygrubber), Melbourne Cricket Ground, 1981.  Brown & beige was then a fashionable color combination.

Rat has a specific meaning in the cricketing slang of the West Indies, referring to a ball which, after being delivered by the bowler, rather than bouncing off the pitch at some angle, instead runs along the ground, possibly hitting the stumps with sufficient force to dislodge the bails, dismissing the batsman, the idea being of a rat scurrying across the ground.  In Australian slang, the same delivery is called a mullygrubber which, although it sounds old-fashioned, is said to date only from the 1970s, the construct thought based on the dialectal rural term mully (dusty, powdery earth) + grub(ber) in the sense of the grubs which rush about in the dirt if disturbed in such an environment.  Such deliveries are wholly serendipitous (for the bowler) and just bad luck (for the batsman) because it's not possible for such as ball to be delivered on purpose; they happen only because of the ball striking some crack or imperfection in the pitch which radically alters it usual course to a flat trajectory.  If a batsman is dismissed as a result, it's often called a "freak ball" or "freak dismissal".  Of course if a ball is delivered underarm a rat is easy to effect but if a batsman knows one is coming, while it's hard to score from, it's very easy to defend against.  The most infamous mullygrubber was bowled at the Melbourne Cricket Ground (MCG) on 1 February 1981 when, with New Zealand needing to score six (by hitting the ball, on the full, over the boundary) of the final delivery of the match, the Australian bowler sent down an underarm delivery, the mullygrubber denying the batsman the opportunity to score and securing an Australian victory.  Although then permissible within the rules, it was hardly in the spirit of the game and consequently, the regulations were changed.

The Ram Air Turbine

Ram Air Turbine (RAT) diagram.

The Ram Air Turbine (RAT) is a small, propeller-driven turbine connected to a hydraulic pump, or electrical generator, installed in an aircraft to generate emergency power.  In an emergency, when electrical power is lost, the RAT drops from the fuselage or wing into the air-stream where it works as a mini wind-turbine, providing sufficient power for vital systems (flight controls, linked hydraulics and flight-critical instrumentation).

Vickers VC10.

Most modern commercial airliners are equipped with RATs, the first being installed on the Vickers VC10 in the early 1960s and the big Airbus A380 has the largest RAT propeller in current use at 64 inches (1.63 metres) but most are about half this size.  It’s expected as modern airliners begin increasingly to rely on electrical power, either propeller sizes will have to increase or additional RATs may be required, the latter sometimes the desirable choice because of the design limitations imposed by the height of landing gear.  A typical large RAT can produce from 5 to 70 kW but smaller, low airspeed models may generate as little as 400 watts.  Early free-fall nuclear weapons used rats to power radar altimeters and firing circuits; RATS being longer-lasting and more reliable than batteries

RAT in operation.

The airline manufacturers have been exploring whether on-board fuel-cell technology can be adapted to negate the need for RAT, at least in the smaller, single-aisle aircraft where the weight of such a unit might be equal to or less than the RAT equipment.  The attraction of housing a in an airliner's wing-body fairing is it would be a step towards the long-term goal of eliminating an airliner's liquid-fuelled auxiliary turbine power unit.  Additionally, if the size-weight equation could be achieved, there’s the operational advantage that a fuel-cell is easier to test than a RAT because, unlike the RAT, the fuel-cell can be tested without having to power-up most of the system.  The physics would also be attractive, the power from a fuel cell higher at lower altitudes where as the output of a RAT declines as airspeed decreases, a potentially critical matter given it’s during the relatively slow approach to a landing that power is needed to extend the trailing edge of the wing flaps.

If the weight and dimensions of the fuel cell is at least "comparable" to a RAT and the safety and durability testing is successful, at least on smaller aircrafts, fuel-cells might be an attractive option for new aircraft although, at this stage, the economics of retro-fitting are unlikely to be compelling.  Longer term research is also looking at a continuously running fuel cell producing oxygen-depleted exhaust gas for fuel-tank inerting, and water for passenger amenities, thereby meaning an aircraft could be operated on the on the ground without burning any kerosene, the fuel-cell providing power for air conditioning and electrical systems.

1944 Messerschmitt Me 163 Komet  (1944-1945).

The only rocket-powered fighter ever used in combat, the Messerschmitt Me 163 Komet had a small RAT in the nose to provide electrical power.  The early prototypes of the somewhat more successful (and much more influential) Messerschmitt Me 262 jet fighter also had a propeller in the nose for the first test flights but it wasn't a a RAT; it was attached to a piston engine which was there as an emergency backup because of the chronic unreliability of the early jet engines.  It proved a wise precaution, the jets failing on more than one occasion.

Small and big-block Chevrolet V8s compared, the small-block (mouse) to the left in each image, the big-block (rat) to the right.

Mouse and rat are informal terms used respectively to refer to the classic small (1955-2003) and big-block Chevrolet V8s (1958-2021).  The small-block was first named after a rodent although the origin is contested; either it was (1) an allusion to “mighty mouse” a popular cartoon character of the 1950s, the idea being the relatively small engine being able to out-perform many bigger units from other manufacturers or (2) an allusion to the big, heavy Chrysler Hemi V8s (the first generation 331 (5.4 litre), 354 (5.8) & 392 (6.4) cubic inch versions) being known as “the elephant”, the idea based on the widely held belief that elephants are scared of mice (which may actually be true although the reason appears not to be the long repeated myth it’s because they fear the little rodents might climb up their trunk).  Bee might have been a better choice; elephants definitely are scared of bees.  The mouse (small-block) and rat (big-block) distinction is simple to understand: the big block is externally larger although counterintuitively, the internal displacement of some mouse motors was greater than some rats.        

Dagmar

Dagmar (pronounced dag-mahr)

(1) The stage-name adopted by Virginia Ruth "Jennie" Lewis (née Egnor; 1921-2001), a star of 1950s US television (initial upper case).

(2) Slang term for the symmetrically-paired bumper extensions used by a number of US vehicle manufacturers and associated mostly with Cadillac 1946-1958 (initial lowercase).

(3) In the study of marketing, as DAGMAR, the acronym of Defining Advertising Goals for Measured Advertising Results (usually all upper case).

(4) A female given name from the Germanic languages and of Norse origin, in occasional use since the last nineteenth century (initial upper case).

Pre-1000: A given name of Scandinavian origin, almost always female.  It was the name of a queen of Denmark (1185–1212), a Czech by descent, originally Dragomíra (related to the contemporary Slovak Drahomíra), the construct being the Old Church Slavonic dorgb (dear) + mirb (peace), rendered in medieval Danish under the camouflage of dag (day) + már (maid).  In Danish the meaning is listed as “day” and “glory” and it’s used also in Slovakia, Poland (Dagmara), the Netherlands, Estonia and Germany.  The ultimate source was the the Old Norse name Dagmær, the construct being dagr (day) + mær (daughter; mother; maiden).

The Tsarina (Princess Dagmar; 1847–1928) in 1885 (colorized).

Maria Feodorovna  was known before marriage as Princess Dagmar of Denmark.  She became Empress of Russia upon marriage to Alexander III (1845-1894; Tsar 1881–1894) and was the mother of the last Tsar, Nicholas II (1868–1918; Tsar 1894-1917).  Historians regard Maria Feodorovna as the most glittering of all the Tsarinas.  Renowned for her beauty, her dark eyes were mentioned in both poems and diplomatic dispatches and a glance was said to be able to "fix men to the spot".  She was also one of the most admired "clothes horses" in Europe, her statuesque, slender figure ("tall, thin and sort or weird looking" as the fashion photographers describe their ideal) of the type seen today on catwalks and in London, Paris and Milan, couturiers in the fashion houses  would write letters to the Russian court (including sketches), sometimes offering their services in exchange for nothing more than the royal imprimatur.

The evolution of Cadillac’s dagmars, 1941-1959

Lockheed P-38 Lightning (left) & 1949 Cadillac (right).

On first looking at the 1949 Cadillac, a borrowing of the motif of the tail fins and propeller hubs from the Lockheed P-38 Lightning (first flown in 1939 and built 1941-1945) does seem obvious but while it appears to be true of the fins, all contemporary evidence suggests the conical additions to the front bumper bar were intended by the stylist Harley Earl (1893–1969; then Vice President of Design at General Motors (GM)), to evoke the idea of a speeding artillery shells.  In the twenty-first century, it may seem curious to use the imagery of military munitions in the marketing of consumer goods but that's the way things were once done.  GM claimed also they afforded additional collision protection but given it wasn’t until the 1970s that regulations existed to require front and rear bumpers to be the same height, in many impacts, it’s likely they acted more like like battering rams used on medieval siege engines.

1941 Cadillac.

The bumper guards (later called over-riders) on the 1941 Cadillac were neither novel nor unique but, being on a Cadillac, they were bigger and shinier than many.  Nor was the linking bar unusual, offered by many manufacturers and emulated too by aftermarket suppliers, used often as a mounting bracket for accessory head lamps.  There was nothing unusual about the idea of additional bumper guards (or over-riders) which were not unknown in the early days of the automobile in the nineteenth century and similar devices, entirely functional as protective protuberances can be identified on horse-drawn and other forms of transport dating back centuries.  It was only in the twentieth century they became a styling feature.

1942 Cadillac.

A chromed pair, recognizably dagmaresque, made their debut in the 1942 model year, production of which began in September 1941.  Just as stylists had drawn from earlier influences such as aeronautical streamlining and art deco architecture, Cadillac’s designers, although the US was not yet a belligerent in what was still a European war, picked up a motif from the military: the conical shape of the artillery shell, presumably to invoke the imagery of speed and power rather than destruction.  One quirk of the early dagmars was that after the US entered the war in December 1941, the government immediately imposed restrictions on the use of certain commodities for consumer goods and this affected chrome plating so the last of much of the the 1942 production runs left the factory with painted bumpers.  Automotive production for civilian sale in the US ceased on 22 February 1942, the  manufacturing capacity converted rapidly to war purposes.

1946 Cadillac.

Although the administration had allowed car production to continue until April, most of the output was used to create a stockpile of over half a million cars and light trucks, made available for the duration of the war to those deemed essential.  The sale of cars to private buyers was frozen from 31 December 1941 by Office of Production Management (OPM) although, upon application, local rationing boards could issue permits for cars to be delivered if the contract had been executed before 1 January.

By April 1944, only some thirty-thousand new cars remained in the stockpile and the manufacturers received authorization to undertake preliminary work on experimental models of civilian passenger cars with the proviso there must be no interference with war work and limits were imposed on the resources allocated.  At this stage, the invasion of mainland Europe had not happened and although progress on the atomic bomb was well-advanced, it was top-secret and not even tested so planning continued with the expectation conflict would continue into 1946 or even 1947.  The war instead ended in August 1945 and that month, Cadillac finished its last M-24 tank, the production lines reverting to cars as soon as September.  By the first week of October, car production was in full swing, the 1946 models essentially the 1942 range with a few detail differences.  The dagmars were retained and re-appeared also on the 1947 line.  Even by 1942 Americans had become accustomed to annual updates to the appearance of automobiles but such was the pent-up demand from the years of wartime restrictions that people in 1946-1947 queued to fill the order books for what were "new" versions of 1942 cars.  In the special circumstances of the time the approach worked in a way recycling for 2016 crooked Hillary Clinton's failed candidacy for the 2008 nomination didn't work for the Democratic party.

1948 Cadillac.

Smaller and more agile, Studebaker was the first manufacturer with a genuinely new post-war range and reaped the benefits although there was some resistance to the modernist lines which seemed then so radical.  GM was more conservative but nobody would mistake the 1948 Cadillacs for something earlier although while the bodies were new, the drive-train substantially was carried over.  Tail-fins weren’t entirely new to cars because the aviation influence had been seen pre-war but this was the model which began Detroit’s tail-fin fetish which, although starting modesty, would grow upwards (and occasionally outwards) for more than a decade.  Although inspired by the P-38 Lightning, the fins served no aerodynamic purpose, but unlike Mercedes-Benz’s later claim the fins on the 1959 Heckflosse were Peilstege (parking aids), Cadillac never bothered to suggest they were there to assist those reversing; at the front, a tribute to the Lockheed's twin propeller hubs seemed to compliment the fins.  The fins were mostly admired but the big news for 1949 was the new overhead valve (OHV) V8 which marked the start of a power race which would run for almost a quarter century before environmental concerns, safety issues and the first oil crisis (1973-1974) wrote finis for such things for a generation.

In a manner echoing pre-war practice, the new 331 cubic inch  (5.4 litre) V8 was actually smaller than its predecessor; that would not be the post-war trend and Cadillac’s V8s would grow to 500 cubic inches (8.2 litre) until reality bit in the 1970s and that reality did intrude on what was planned.  When Cadillac introduced their 331 V8 in 1949 it was designed with expansion in mind, able to be enlarged to around 430 cubic inches (7.0 litres), a displacement expected not ever to be required, such had been the advances in efficiency of internal combustion engines compared with pre-war units.  However, the American automobile became bigger & heavier while the highway network expanded, ushering in high-speed motoring, meaning the demand for more powerful engines grew too and by 1964, the Cadillac V8, then enlarged to 429 cubic inches (7.0 litres) had reached the end of its development potential and it was known both Chrysler and Ford would soon release V8s of even greater capacity.  Accordingly, in late 1967 they trumped the Chrysler 440 (7.2) and Ford's 462 (7.6) with the Cadillac 472 (7.7), a block designed to be able to grow to a remarkable 600-odd cubic inches (circa 10 litres), the precaution taken to ensure the corporation was ready for whatever market trends or regulatory impositions (fuel economy standards weren't envisaged in an era of "cheap, limitless oil") might emerge.  It was a shame because the Cadillac 429 was (by Detroit's seven litre standards) a compact and economical unit.  As things transpired, after growing in 1970 to 500 cubic inches, progressively the behemoth was down-sized to 425 (7.0) and 368 (6.0) before being retired in 1984 when it was the last of the US "big block" V8s still in passenger car use.  If Greta Thunberg (b 2003) thinks such things are bad now, she may be assured they used to be worse.  

1949 Ford "single spinner" (left) & 1951 Ford "twin spinner" (right).

The industry’s inspiration certainly came originally from the military, influenced either by artillery and aviation.  The first new Fords of the post-war years came to be known as “single spinners” and “twin spinners”, referencing the slang term for propeller and that use was a look back, jets, missiles & rockets providing designers with their new inspirations, language soon reflecting that.

"Dagmar", Virginia Ruth "Jennie" Lewis (née Egnor, 1921–2001).

Television was the great cultural disrupter of the post-war years, creating first a national and eventually an internationally shared experience unimaginable in the diverse media environment of the twenty-first century.  Television needed content and, beginning in 1949, some of it was provided by Dagmar.  Ms Lewis adopted the persona of the "dumb blonde" but soon proved to be no airhead, becoming the star of the show on which she'd been hired as the supporting act, parlaying her fame to become one of the celebrities of the era.  She was also impressively pneumatic which may have accounted for her popularity with at least some of the audience and the vague anatomical similarity to the Cadillac's chromed pieces quickly saw them nicknamed "dagmars".  She was said to be amused by the connection, exploiting it whenever possible and Harley Earl's notion of speeding explosive shells was soon forgotten.

Art and Engineering: The automobile, the sweater, the "bullet" or "torpedo" bras and the cross-over of techniques from the structural to the decorative; from jet aircraft & rockets to fashion, in the 1950s, the industry had no shortage of inspiration and role models.  Unfortunately, Sigmund Freud (1856-1939) didn't live to see the dagmars sprout from cars and while it may be assumed he'd have thought them worthy of analysis, probably he'd have conceded "sometimes a bumper is just a bumper".

1951 Cadillac.

For 1951, the dagmars not only grew but evolved stylistically from their bolt-on beginnings to become visually integrated with the bumper itself although, technically, they remained separate parts.  The growth of the dagmar is illustrative of Charles Darwin's (1809-1882) theory of natural selection; beneficial mutations within the genetic code that aid an organism's survival will be passed to the next generation.  The sales performance of the brand in the post-war years would proved Darwin correct, the increasing bulk of Cadillacs rewarded on the sales charts and for much of Cadillac’s next twenty-five years, bigger would be better.  While the dagmars soon would reach an evolutionary dead-end and go extinct, for a (human) generation or more, size would continue to matter.

1953 Cadillac.

Whether or not Cadillac was influenced by the cultural impact of Ms Lewis isn’t documented but in one way the anthropomorphism became a little more explicit in 1953, this time with uplift, supported still by the bumper but notably higher.  However, for 1953, the dagmars also returned to their military roots with the addition of small stabilizer fins so those seeking meaning in the metal should make of that what they will.  It was in 1953 the Cadillac Eldorado first appeared as a low volume convertible, production prompted after the positive response to the 1952 El Dorado “Golden Anniversary” show car.  Lavishly equipped, it featured a unique body and is notable for the first appearance on a Cadillac of the “wrap-around” windscreen which would become an industry feature for almost a decade and one historian suggested the several days of incapacity suffered by Richard Nixon (1913-1994; US president 1969-1974) during the 1960 presidential campaign (his knee damaged by the “dog-leg” windscreen pillar in his Chevrolet) may have been a factor in him losing the contest by “an electoral eyelash”.  The 1953 Eldorado was very expensive and only 552 were built but despite that, in subsequent decades, US manufacturers often couldn't resist the lure of such unprofitable ventures, justified usually as "prestige projects".

1954 Cadillac.

Cadillac slightly enlarged the tails fins for 1954 but abandoned the little fins on the dagmars, the shape returning not merely to something approximating Ms Lewis but hinting also at the bullet bra style so associated with the era.  Why the dagmars dropped a cup size in 1954 isn't known but although it must at the time have seemed a good idea, the era's mantra of "never do in moderation what can be done in excess") soon prevailed.  It was clear there was demand for something like the Eldorado but the stratospheric price of the exclusively bodied 1953 car had meant buyers were few.  In 1954 Cadillac re-positioned the Eldorado as a blinged-up version of the regular-production line, enabling the price to be reduced by 35%; in response, sales almost quadrupled and almost immediately the thing was among the most profitable in the GM stable, something which encouraged over the years a number of “special edition” Eldorados with predictably fanciful names.

1955 Cadillac.

Peak dagmar was reached in 1955.  Although techniques in steel fabrication existed to allow them further to grow, imagining such things can conceive of them only as absurd and there's no evidence in the GM archives that anything bigger was contemplated; from now on, they would have to evolve in another way.  Such was the importance of the dagmar, to afford them additional space, the parking lamps were moved to a spot directly below the head lamps and 1955's uplift was quite explicit, the superstructure suggestive of the cantilever effect which underlay the structural engineering of the underwire bra.  Pursuing the metaphor, this was definitely up a couple of cup sizes from the year before; while it’s hard to be exact, by 1955 Cadillac was well into the alphabet.

1956 Cadillac.

Apparently now content with the shape of the protrusions, Cadillac may have realized that even by their standards the 1955 fittings may have been too big so slightly they were pruned and some attention was devoted instead to the surrounding details, the grill now with a finer texture and the parking lamps moved to lacunae cut into the bumpers.  A novelty for 1956 was the option of the grill being embellished in gold as an alternative to the standard satin finish and the fins, although higher than the originals, remained restrained.  That was not to last.

1955 Cadillac Eldorado Brougham Show car (left) and 1957 Cadillac Eldorado Brougham (right).

Longer to lengthen the lingerie link, the uplifted dagmars now gained padding (which were technically more like pasties given they didn't increase a dagmar's size), the rubber attachments actually quite a good idea given how far their chromed metal predecessors stuck out.  Although obviously not at the time foreseen, the idea would be revived by some in the early 1970s as a quick, cheap solution to meet the new frontal-impact regulations and the rubber buffers must in 1957 have prevented some damage, both to victim and perpetrator.  Predictably, they were quickly nicknamed “pasties”, a borrowing of the term used in the female underwear business to describe a stick-on attachment designed for purposes of modesty.  The quad headlamps previewed on 1955 Eldorado Brougham Show car became lawful in many US states in 1957 (and soon all 48) and that meant the front end was becoming very busy with its array of circular shapes.

1958 Cadillac.

GM's corporate body for 1958 was released with the usually high expectations.  However, not only was the a brief, though sharp, recession which affected sales but the ranges suffered stylistically against the sleek new Chryslers which more than any embodied the "longer, lower, wider" motif which would characterize the era.  The Cadillacs were certainly longer in 1958, one aspect addressed in response to the perception the 1957 models had looked, remarkably, too short; a thing of relative proportions as well as absolute dimensions.  Still padded, the dagmars moved towards the edges and the fins grew, losing the forward slope on some models which had contributed to the sense of stubbiness.  What GM's designers looked at most longingly however were the Chrysler's sweeping tail-fins; they would respond.

1959 Cadillac.

Cadillac retired the dagmars for 1959; Darwinian natural selection again. (1) The dagmars, even if padded, did cause damage, both to themselves and whatever it was they hit (2) the adoption of the newly lawful quad headlamps in 1957-1958 created an opportunity for stylists render something new and (3) whatever may have be the linkage with women’s fashion, the old imagery of artillery shells or twin propellers was outmoded in the jet-age, the new inspiration being the twin-engined nacelle seen on the Boeing B-52 Stratofortress and the Convair B-36 Peacemaker, four of which Cadillac grafted on, two for the head lamps, two for the park lamps.  Even in Detroit in the 1950s, to add a pair of dagmars to that lot might have been thought a bit much.  As it was, probably few noticed or long lingered over their absence because it was the tail-fins and tail-lamps which drew the eye.

Translatable motifs: The Boeing B-52 Stratofortress and the 1959 Cadillac.

Built between 1952-1962, the B-52 has been in service under fourteen presidents and has seen several generations of airplanes come and go; when first it flew, Joe Biden (b 1942; US president since 2021) was nine, Donald Trump (b 1946; US president 2017-2021) was six and crooked Hillary Clinton (b 1947; US secretary of state 2009-2013) was five (though even then probably already lying about her age).  No longer used for its original purpose which was to overfly Russian & Chinese targets, dropping gravity bombs, the platform has proved adaptable and has been subject to a number of upgrades and revisions, new generations of engines (quieter, more economical and less polluting) fitted and some modern materials integrated to replace the some of the period steel & aluminium.  The most obvious updating however is that the B52s still in service are hybrids in that they're a mix of analogue and digital, the flight controls, weapons systems and other avionics reflecting in some cases almost all of the technical generations of the last sixty-odd years.  It’s not impossible some may still be in service in 2052, a century after the first flight.  In most ways, the B-52’s design has proved more durable than the 1952 Cadillac.

Translatable motifs: The Convair B-36 Peacemaker and the 1959 Cadillac.

The nacelles of aircraft engines provided Cadillac with a rich source of inspiration and if they couldn't decide between propellers and jets, some aircraft offered both.  The earliest of Messerschmitt's prototype twin-jet ME-262s were equipped also with a propeller driven by a Jumo 210 engine, a necessity for the test-pilots given the unreliability of the early jets and many manufactures adopted the approach for their prototypes.  For some aspects, Cadillac settled on on one which, unusually, combined both propulsion systems in a mass-produced model, the Convair B-36 Peacemaker (1946-1954) a transitional airframe which straddled the two eras which was one of the earliest strategic bombers designed specifically as a delivery system for nuclear weapons.  With a greater payload even than the B-52, in its final configuration the B-36 was powered by a remarkable ten engines, six radial propeller units and four jets which lent the B-36 its slogan within Strategic Air Command (SAC): "six turnin' and four burnin' ".  However, the propellers were in an unusual pusher configuration, facing the opposite direction from the usual practice so it would have been a challenge to continue the tribute to Ms Lewis.  Instead, for 1959 Cadillac "mixed and matched": the B-52's twin nacelles at the front, the B-36 lending its lines to the tail lamps at the rear.

Jayne Mansfield (1933-1967) in her 1959 Cadillac Eldorado Biarrritz.

She may neither have noticed nor cared that Cadillac deleted the dagmars on the 1959 range but Jayne Mansfield anyway brought her own when she bought a 1959 Eldorado convertible.  As a marketing ploy, the two-door hardtops had for some time been called the "Eldorado Seville" while the companion convertible was the "Eldorado Biarritz".  The dagmars may have gone but it's for the "twin bullet" tail-lamp assemblies that the 1959 range is remembered; while not the tallest fins on the era (the 1961 imperials winning that dubious award by about an inch (25 mm)), they probably were the most extravagant.  Also, despite the number of pink 1959 Cadillacs now in existence, none ever left the factory painted thus, a rose-colored exterior hue offered in only 1956.  It was that Elvis Presley (1935-1977) owned a pink Cadillac and the use of the phrase in popular culture (song & film) that made the trend a thing although his car was a 1955 Fleetwood Sixty Special which was originally blue with a black roof.  The roof was later re-sprayed white but people adopting the motif usually go all-pink.

1959 Cadillac Cyclone (XP-74) concept car (left) and North American F-86-50-NA Sabre (right).

However, although Cadillac abandoned the use of dagmars in their 1959 models (a rare example of restraint that year), just to remind people what they were missing, simultaneously they toured the show circuit with the Cadillac Cyclone (XP-74) concept car, an example of how far things had come from Ford's "spinners" a decade earlier.  Although it was powered by the corporation’s standard 390 cubic inch (6.5 litre) V8, there was some adventurous engineering including a rear-mounted automatic transaxle and independent rear suspension (using swing axles, something far from ideal but not as bad as it sounds given the grip of tyres at the time) but few dwelt long on such things, their attention grabbed by features such as the bubble top canopy (silver coated for UV protection) which opened automatically in conjunction with the electrically operated sliding doors.  This time the link with military aviation was quite explicit, the black dagmars actually functional radomes like those familiar on the F-86-D Sabre, containing the radar-controlled proximity sensors used electronically to alert the driver with an audible signal and warning light should an automobile or other approaching object be detected.  The system apparently worked although it would have been too expensive to offer as an option.  In 2024, such systems are produced by the million at low-cost and are standard equipment on many vehicles.

Trends in one industry do get picked up in others and it can be difficult to work out who is being influenced by whom, cause and effect sometimes amorphous.  Like the tailfin fad, the dagmar era came and went during the first generation of the affluent society, a brief, chromed moment during which excess could be enjoyed without guilt although, even at the time, there were critics although there were probably few dissenters among those who actually bought the big Cadillacs, Lincolns and Imperials.  Whether being in the avant-garde of dagmar trends much influenced buying patterns is doubtful because the Cadillac, Lincoln & Imperial crowd tended to be a tribal lot and conquest sales happened at scale only if some thing genuinely innovative (like the 1955 & 1957 Imperials) appeared and even then, Cadillac owners were seen as a breed apart; a separate population.  Only about one thing did probably most concur: everybody likes boobs.

Not only Cadillacs

1958 Lincoln Continental Mark III Convertible (left) and 1960 Lincoln Continental Mark V Executive Limousine.

Ford's 1958 Lincoln Continental was a reasonable technical achievement, being at the time the largest vehicle of unitary construction ever built and in convertible form it remains the longest the industry made since World War II (1939-1945).  It was also a failure in the market which went close to dooming the Lincoln brand and the reasons for that included the sheer size of the things (there were many garages, even in affluent places, in which where one simply wouldn't fit) and the appearance, a mashup of lines, curves and scallops which made some speculate each part may have been designed by a different committee, all working is isolation.  Ponderously, the body survived for three seasons during which Lincoln apparently couldn't decide about dagmars; after appearing in 1959, they were deleted the next year, only to return for the range's swansong in 1960.  Clearly, Lincoln lacked Cadillac's passion. 

The size did however come in handy when building limousines.  The black car was leased by Ford to the White House for an annual US$500 and was the one presidents used for personal journeys around Washington DC.  Replaced during Lyndon Johnson's (LBJ, 1908–1973; US president 1963-1969) administration (1963-1969) as part of the periodic updating of the White House fleet, it was sold by public tender as just another used car and there wasn't then the same sensitivity attached to objects associated with events.  The 1961 Lincoln Continental convertible in which President John Kennedy (JFK, 1917–1963; US president 1961-1963) was assassinated in 1963 was, after being repainted black (it was originally midnight blue), fitted with a permanent roof and titanium armor plating, returned to the White House car pool where it served until 1977, an unsentimental pragmatism probably unthinkable now.  Although their own extravagances were hardly subtle, the fins on Fords, Lincolns and even Edsels never reached the heights or bent to shape the contortions GM and Chrysler pumped out.  To their eternal credit, Lincoln didn't add dagmars to the memorable 1961 Lincoln; there would have been an absurd clash with the severe lines.

1963 Ford Galaxie 500XL convertible (G-Code 406 Tri-power).

Notably, GM's other divisions rarely tried to match Cadillac in the size, lift and projection of dagmars, Buick the most committed though other manufacturers, albeit spasmodically, would use the theme.  Mercury and Packard offered them on various models between 1953-1956 and Chevrolet's were modest and often rubber-padded.  That idea was picked up by Ford in the early 1960s, their final  A-cup fling on the 1963 Galaxie; perhaps as a sign of the times, uniquely, they were offered only as an optional extra.  In a distinctly un-dagmaresque way, a pair appeared also on the rear bumper and were obviously there genuinely to offer some modest protection against the damage which might be suffered in low-impact events such as those suffered in car parks.  The insurance industry had already noted the disproportionately large costs they were incurring fixing damage suffered while parking and were planning their own strategy.

Clockwise from top left: 1974 Jaguar XKE (E-Type), 1974 Triumph TR6, 1978 Triumph Spitfire and 1973 Dodge Monaco.

There was no suggestion of anything organically Darwinian about the sudden addition of ungainly blocks of rubber to certain US-market cars in the early 1970s.  They were a consequence of the lobbying efforts of the insurance industry proving more effective in having the congress pass legislation imposing "bumper standards" than were those of the car industry to delay or prevent their introduction.  Presumably also, the "campaign funds donations" of the insurance industry were both greater and better "packaged".  Some US manufacturers bolted them on as a stop-gap solution while the engineering was done to create the "railway-sleeper" bumpers to comply with the next year's tougher standards while some British sports cars would see out their final years so disfigured.  A few were built on platforms designed in the 1950s which either couldn’t be adapted or were so close to end-of-life the economics were not compelling.  The quick and dirty solution produced what proved to be distinctly non-anthropomorphic dagmars, this time made almost entirely of padding so predictably dubbed “falsies”.  Awkward looking though they were, worse was to come; some of the solutions used to meet the rules were truly ghastly, a few of which lasted well into the 1980s.

Sabrina, the English Dagmar

Television penetrated most of the Western world during the 1950s and in an era of generally (though not without the odd hiccup) rising prosperity, the sets became increasingly ubiquitous in domestic households.  The content however was much more regionally specific than would become the trend in succeeding decades.  While production centres in the UK did distribute some of their product elsewhere (and not only in the English-speaking world), by volume and cultural influence the US were by far the most successful, much of what was seen on many screens was locally produced, something easier to achieve in an era when 24 hour TV was not yet a thing and it was industry practice to repeat broadcasts with some frequency.  Additionally, there were often “local content” requirements (quotas) which were industry protection trade barriers erected obsessively to save viewers from what even then was understood as “cultural imperialism”.  Although that phrase had been used even prior to World War I (1914-1918), it wasn’t until it appeared in Mass Communications and American Empire (1969) by US sociologist Herbert Schiller (1919–2000) that it would become part of the mainstream language of critical theory.  However, not only was the particular phenomenon of American cultural influence well documented in the 1950s, it was also appreciated that television would be a force like no previous form of distribution, a concept Dr Schiller also discussed as “packaged consciousness”, an idea later refined as “encapsulated cultural hegemony”.

1962 Reliant Sabre (1961-1963): It was only the early cars which were adorned with the rather bizarre “sabrinas”.

But in the 1950s, more cultural references than now were regionally specific, although international trade (globalization had actually been well underway by before the World War I (1914-1918) and its aftermath of decades imposed an intermission) meant objects spread and in fields like architecture something like an “international style” had emerged.  So, the dagmars on the cars made it to Europe but, without Ms Lewis appearing of screens, the nickname didn’t come into use.  Except for Detroit’s cars, not many examples of the classic dagmar bumpers were seen but England did have Norma Ann Sykes (1936–2016), better known by her stage name: Sabrina.

Sabrina in some characteristic poses.

Sabrina’s early career was as a model, sometimes in various stages of undress, but it was when in 1955 she was cast as a stereotypical “dumb blonde” in a television series she achieved national fame.  On stage or screen, she remained a presence into the 1970s and although without great critical acclaim although the University of Leeds did confer an honorary D.Litt (Doctor of Letters) for services to the arts so there was that.  What was of course noticed was her "presence" and as well as the unusual fittings to the nose of the Reliant Sabre, the “sabrina” moniker was applied to parts of equipment on machinery as varied as heavy trucks and Royal Air Force (RAF) fighter jets.

Triumph sabrina engine in TRS, Le Mans, 1960.

There was also a “sabrina” engine, or more correctly its cylinder head.  For various reasons, it wasn’t easy for European manufacturers to pursue the path to power and performance by adopting the American approach of big displacement so they chose the alternative: greater specific efficiencies & higher engine speeds.  In Italy, as early as 1954 Alfa Romeo had proved the once exotic double overhead camshaft (DOHC) configuration was viable in relatively low-cost, mass-production machines and even in England, MG’s MGA Twin Cam had been released, short-lived though it was.  Triumph’s sports cars had enjoyed much success, both in the marketplace and on racetracks but their engines were based on one used in a tractor and while legendary robust, it was tuneable only up to a point and that point had been reached, limiting its potential in competition.  The solution was a DOHC head atop the old tractor mill and this the factory prepared for their racing team to run in the 1959 Le Mans 24 Hour classic, naming the car in which it was installed the TR3S, suggesting some very close relationship with the road-going TR3 although it really was a prototype and a genuine racing car.

The Le Mans campaigns with the sabrina Engine: TR3S (1959, left), TRS (1960, centre) and the TRS team crossing the line in formation for what was a "staged  photo-opportunity", none of the cars having completed the requisite number of laps to be classified a "finisher" (1960, right).  In 1961, all three went the distance, taking the "Teams Prize".    

Some resemblance in the mind's eye of an engineer: Sectional view of the sabrina.

Triumph used the sabrina engine for three consecutive years at Le Mans, encountering some problems but the reward was delivered in 1961 when all three cars completed the event with one finishing a creditable ninth, the trio winning that year’s team prize.  Satisfied the engine was now a reliable power-plant, the factory did flirt with the idea of offering it as an option in the TR sports cars but, because the differences between it and the standard engine were so great, it was decided the high cost of tooling up for mass production was unlikely to be justified, the projected sales volumes just not enough to amortize the investment.  Additionally, although much power was gained by adding the DOHC Hemi head, the characteristics of its delivery were really suited only to somewhere like Le Mans which is hardly typical of race circuits, let alone the conditions drivers encounter on the road.  As a footnote in Triumph’s history, it was the second occasion on which the factory had produced a DOHC engine which had failed to reach production.  In 1934 the company displayed a range-topping version of their Dolomite sports car (1934-1940), powered by a supercharged two litre (121 cubic inch), DOHC straight-8.  The specification was intoxicating and the lines rakish but, listed at more than ten times the price of a small family car, it was too ambitious for the troubled economy of the 1930s and only three were built.

Professor Regitz-Zagrosek's "bikini triangle": Lindsay Lohan illustrates.

When viewing the casing containing the gears and timing chains running from the bottom-end to the front camshaft bearings, one can see why Sabrina rapidly would have entered the mind of an engineer.  Apparently it began with a chance remark at the assembly bench but nobody could think of a more appropriate description so the official project name it became, the original "20X" soon forgotten.  Anatomically, the engineers were of course about right because the front sectional view of the sabrina engine’s internals do align with what Dr Vera Regitz-Zagrosek (b 1953; Professor of Cardiology at the University of Zurich), describes as “the bikini triangle”, that area of the female human body defined by a line between the breasts and from each breast down to the reproductive organs; it’s in this space that is found all the most obvious anatomical differences between male & female although the professor does caution that differences actually exist throughout the body, down to the cellular level.