Bubbletop

Bubbletop (pronounced buhb-uhl-top)

(1) In aircraft design, a design of pilot’s canopy (originally military slang for what designers dubbed the “bubble canopy”, a Perspex molding which afforded exceptional outward visibility).

(2) An automobile using a transparent structure over the passenger compartment, replacing the usual combination of roof & windows.

(3) A descriptor of certain automobiles of the early 1960s, based on the shape rather than the method of construction, the conventional metal and glass used.

1940s: The construct was bubble +‎ top.  Bubble dates from the late fourteenth century and was from the Middle English noun bobel which may have been from the Middle Dutch bubbel & bobbel and/or the Low German bubbel (bubble) and Middle Low German verb bubbele, all thought to be of echoic origin.  The related forms include the Swedish bubbla (bubble), the Danish boble (bubble) and the Dutch bobble.  Top pre-dates 1000 and was from the Middle English top, toppe & tope (top, highest part; summit; crest; tassel, tuft; (spinning) top, ball; a tuft or ball at the highest point of anything), and the Old English top & toppa (top, summit, tuft of hair), from the Proto-West Germanic topp, from the Proto-Germanic tuppaz (braid, pigtail, end), of unknown origin.  It was cognate with the Old Norse toppr (top), the Scots tap (top), the North Frisian top, tap & tup (top), the Saterland Frisian Top (top), the West Frisian top (top), the Dutch top (top, summit, peak), the Low German Topp (top), the German Zopf (braid, pigtail, plait, top), the Swedish topp (top, peak, summit, tip) and the Icelandic toppur (top).  Alternative forms are common; bubble-top in automotive & aeronautical engineering and bubble top in fashion.  Bubbletop is a noun and bubbletopped is an adjective; the noun plural is bubbletops.

Evolution of the Mustang's bubbletop: P-51C (top), P-51 III (centre) and P-51D (bottom).

“Bubbletop” began as World War II (1939-1945) era military slang for officially was described as the “bubble canopy”, the transparent structure sitting atop the cockpit of fighter aircraft, the advantages being (1) superior visibility (the purest interpretation of the design affording an unobstructed, 360° field-of-view, (2) improved aerodynamics, (3) easier cockpit ingress & egress (of some significance to pilots force to parachute and (4), weight reduction (in some cases).  Bubbletops had been seen on drawing boards in the early days of aviation and some were built during World War I (1914-1918) but it was the advent of Perspex and the development of industrial techniques suitable for the creation of large, variably-curved moldings which made mass-production practical.  The best known early implementations were those added to existing air-frames including the Supermarine Spitfire, Republic P-47 Thunderbolt and North American P-51 Mustang.  By 1943, the concept had become the default choice for fighter aircraft and the technology was applied also to similar apparatuses used elsewhere on the fuselage where they were styled usually as “blisters”.  In the post war years it extended to other types, most dramatically in the Bell 47 helicopter where the cabin was almost spherical, some 70% of the structure clear Perspex.

The enormous and rapid advances in wartime aeronautics profoundly influenced designers in many fields and nowhere was that more obvious than in the cars which began to appear in the US during the 1950s.  Elements drawn variously from aeronautics and ballistics did appear in the first generation of genuinely new post-war models (most of what was offered between 1945-1948 being barely revised versions of the 1942 lines) but it was in the next decade the designers were able to embrace the jet-age (a phrase which before it referred to the mass-market jet-airline travel made possible by the Boeing 707 (which entered commercial service in 1958) was an allusion to military aircraft, machines which during the Cold War were a frequent sight in popular culture).  On motif the designers couldn’t resist was the bubble canopy, something which never caught on in mass-production although Perspex roofed cars were briefly offered before word of their unsuitability for use in direct sunlight became legion.

GM Firebird XP-21 (Firebird I, 1953).

Not content with borrowing the odd element from aircraft, the General Motors (GM) team decided the best way to test which concepts were adaptable from sky to road was to “put wheels on a jet aircraft” and although they didn’t do that literally, by 1953 when Firebird XP-21 was first displayed, it certainly looked as though it was exactly that.  Its other novelty was it was powered by a gas turbine engine, the first time a major manufacturer in the US had built such a thing although a number of inventors had produced their own one-offs.  When the XP-21 (re-named Firebird I for the show circuit) made its debut, some in the press referred to it as a “prototype” but GM never envisaged it as the basis for a production car, being impractical for any purpose other than component-testing; it should thus be thought of as a “test-bed”.  The bubble canopy looked as if it could have come from a US Air Force (UFAF) fighter jet and would have contributed to the aerodynamically efficiency, the 370 hp (280 kW), fibreglass-bodied Firebird I said to be capable of achieving 200 mph (320 km/h) although it’s believed this number came from slide-rule calculations and was never tested.  Despite that, in its day the Firebird II made quite a splash and a depiction of it sits atop the trophy (named after the car’s designer, Harley Earl (1893–1969), the long time head of GM’s styling studio) presented each year to the winner of NASCAR’s (National Association for Stock Car Auto Racing) premiere event, the Daytona 500.

GM Firebird II (1956).

Compared with its predecessor, the Firebird II (1956), rendered this time in titanium was almost restrained, the Perspex canopy a multi-part structure over a passenger compartment designed to seat “a family of four”.  The family might have chosen to drive mostly in darkness because the heat build-up under the midday sun would have tested the “individually-controlled air conditioning”, a system upon which comfort depended because the Perspex sections were fixed; there were no opening “windows”.  Still, even if hot, the family would have got places fast because the same 200 mph capability was claimed.

GM Firebird III (1958).

The Firebird III was displayed at the 1958 Motorama and although GM never built any car quite like it, within a season, elements of it did begin to appear on regular production models in showrooms (notably the rear skegs which Cadillac used for a couple of years) and some of its features are today standard equipment in even quite modest vehicles.  The striking “double bubbletop” never made the assembly lines although some race cars have at least partially implemented the concept.  What proved more of a harbinger was the specification, the Firebird III fitted with anti-lock brakes, cruise control, air conditioning, an automated “accident avoidance system” and instead of a steering wheel, the driver controlled the thing with a joystick, installed in a centrally-mounted “Unicontrol & Instrument Panel”.  All these were analogue-era electro-mechanical devices too bulky, fragile or expensive for mass production, wider adoption in the decades to come made possible by integrated circuits (IC) and micro-processors.

1959 Cadillac Cyclone (XP-74).

Borrowing from the Firebird II, Cadillac also used a bubble top for the Cyclone (XP-74) concept car which in 1959 toured the show circuit.  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 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 (this time silver coated for UV (ultra violet) protection) which opened automatically in conjunction with the electrically operated sliding doors.  The Perspex bubble canopies from fighter aircraft never caught on for road or race cars but so aerodynamically efficient was the shape it found several niches.

1953 Ferrari F166MM Spider by Vignale (left) and 1968 MGCGT (centre & right).

Bubbles often appeared atop the hood (bonnet) to provide clearance for components inconveniently tall.  Most were centrally located (there was the occasional symmetrical pair) but the when BMH (British Motor Holdings, the old  BMC (British Motor Corporation) shoehorned their big, heavy straight-six into the MGB (1963-1980), it wouldn’t fit under the bonnet, the problem not the cylinder head but the tall radiator so the usual solution of a “bonnet bulge” was used.  However, for that to clear the forward carburetor, the bulge would have been absurdly high so a small bubble (and usually, ones this size are referred to as "blisters") was added.  It probably annoyed some there wasn’t a matching (fake) one on the other side but it’s part of the MGC’s charm, a quality which for years most found elusive although it’s now more appreciated.  For MGC owners wish to shed some weight or for MGB owners who like the look, the “bonnet with bubble” is now available in fibreglass.

The winning Ford GT40 Mark IV (J-Car) with bubble to the right, Le Mans 1967 (left) and the after-market (for replicas) “Gurney Bubble” (right).

US racing driver Dan Gurney (1931–2018) stood 6' 4" (1.9 m) tall which could be accommodated in most sports cars and certainly on Formula One but when he came to drive the Ford GT40 Mark IV it was found he simply didn’t fit when wearing his crash helmet.  The original GT40 (1964) gained its name from the height being 40 inches (1016 mm) but Mark IV (the “J-Car”, 1966) was lower still at 39.4 inches (1,000 mm).  Gurney was the tallest ever to drive the GT40 and the solution sounds brutish but fix was effected elegantly, a “bubble added to the roof to clear the helmet.  Gurney and AJ Foyt (b 1935) drove the GT40 to victory in the 1967 Le Mans 24-hour endurance classic and the protrusion clearly didn’t compromise straight-line speed, the pair clocked at 213 mph (343 km’h), on the famous 3.6-mile Mulsanne Straight (which was a uninterrupted 3.6 miles (5.8 km) until the Fédération Internationale de l'Automobile (the FIA; the International Automobile Federation and world sport’s dopiest regulatory body) imposed two “chicanes”),  Known ever since as the “Gurney Bubble”, such is the appeal that they’re now available for any GT40 replica: Like the AC Shelby Cobra, the GT40 “reproduction” industry is active and there are many times more of these than there are survivors of 105 originals.

Ferrari 250 GT “Tour de France” LWB Berlinettas by Zagato: The “double bubble” roof (left), the Hofmeister kink (centre) and the famous “Z” kink, (right).

The Italian coachbuilding house Zagato was founded in 1919 by Ugo Zagato (1890-1968) and since the early post-war years, their designs have sometimes been polarizing (the phrase “acquired taste” sometimes seen), their angularity often contrasted with the lines of other, notably Pinninfarina and Bertone but unlike many which have over the years folded, Zagato remains active still.  One Zagato design never criticized was his run in 1956 of five Ferrari 250 GT “Tour de France” LWB Berlinettas, memorable also for introducing the signature “Zagato double-bubble roof.  The roof was practical in that it better accommodated taller occupants but it really was a visual trick and a variation on the trick Mercedes-Benz used on the “Pagoda” (W113; 230, 250 & 280 SL; 1963-1971) which they explained by saying “We didn’t lower the roof, we rained the windows”.  The other famous feature (which appeared on only one) was the fetching “Z” shape on the rear pillar, replacing the “Hofmeister kink” used on some others.

1962 Chevrolet Impala “bubbletop” Sport Coupe (left), 1963 Ford Consul Capri (centre) and 1972 BMW 3.0CS (E9, right).

The 1959 Chevrolet quickly came to be nicknamed “bubbletop” and the style spread, both within GM and beyond.  The “bubbletop” reference was to the canopy on aircraft like the P-51D Mustang but was an allusion to the shape, not the materials used; on cars things were done in traditional glass and metal.  Across the Atlantic, Ford in the UK applied the idea to their Consul Capri (1961-1964), a two-door hardtop which the company wanted to be thought of as a “co-respondent's” car (ie the sort of rakish design which would appeal to the sort of chap who slept with other men’s wives, later to be named as “co-respondent” in divorce proceedings).  The Capri was a marketplace failure and the styling was at the time much criticized but it’s now valued as a period piece.  Chevrolet abandoned the look on the full-size cars after 1963 but it was revived for the second series Corvair (1965-1969).  A fine implementation was achieved in the roofline of the BMW E9 (1968-1975) which remains the company’s finest hour.

The bubble shirt and bubble tops.

The bubble skirt (worn by Lindsay Lohan (centre)) is one of those garments which seems never to quite die, although there are many who wish it would.  Once (or for an unfortunate generation, twice) every fashion cycle (typically 10-12 years), the industry does one of its "pushes" and bubble skirts show up in the high street, encouraged sometimes by the odd catwalk appearance; it will happen again.  While the dreaded bubble skirt is easily identifiable, the “bubble top” is less defined but there seem to be two variations: (1) a top with a “bubble skirt-like” appendage gathering unhappily just above the hips (left) and (2) a kind of “boob tube” which, instead of being tightly fitted is topped with an additional layer of material, loosely gathered.  The advantages of the latter (which may be thought of as a “boob bubble”) are it can (1) without any additional devices create the illusion of a fuller bust and (2) allow a strapless bra to be worn, something visually difficult with most boob tubes because the underwear’s outline is obvious under the tight material.

Batwing

Batwing (pronounced bat-wing)

(1) In zoology, the wing of a bat (and, informally, related creatures).

(2) In entomology, several South or Southeast Asian species of tailless dark swallowtail butterflies in the genus Atrophaneura.

(3) An object or design formed or shaped in a way resembling the extended wing of a bat.

(4) In architecture, as “batwing doors”, pairs of swinging doors which typically do not lock nor cover the full vertical range of the doorway (leaving a large gap at the top and bottom), common as entrances to commercial kitchens and in bars.  It was the US industry in the mid-1950s which adopted “batwing doors” to replace “saloon doors” because there was some “middle class resistance” to the association with such establishments; it was a in time which rising prosperity had made mass market interior decorating a thing, hence the re-branding.

(5) In fashion, a garment or part of a garment resembling or conceived of as resembling the wing of a bat, applied usually to a loose, long sleeve (some flaring out, some with a tight wrist and known also as the “magyar sleeve”) but also to hem-lines.

(6) In hairdressing, a variation of the pigtail (in which the tied hair extends from the scalp at close to 90^o before cascading) in which the tied hair extends from the scalp upwards at an acute angle before cascading.  Batwings can be single ties but more typically appear symmetrically to the sides, in emulation of the wings of a bat.

(6) In physical training, an exercise routine or posture on the stomach wherein a dumbbell row or lateral raise is performed.

(7) In slang, an area of flabby fat under a person's arms (known in some places as “tuck shop lady’s arms).

(8) In automotive design, a type of rear fin which extended laterally rather than upwards.

1955–1960: The construct was bat + wing.  Bat (in the sense of the small flying mammal) dates from the late 1570s and is thought to be from a Scandinavian source, possibly the dialectal Swedish natt-batta, a variant of the Old Swedish natt-bakka (night-bat).  It replaced the Middle English bake & bak, from balke & blake, also from a Scandinavian source.  The related Nordic forms included the dialectal Swedish natt-blacka and the Old Icelandic ledhr-blaka (bat), the construct being ledhr (skin, leather) + blaka (flutter) and understood in the vernacular as “leather flapper”, the sense something like the later Old Danish nathbakkæ (literally “night-flapper”).  The earlier use (to describe a club, staff etc) dated from the turn of the thirteenth century and was from the Middle English noun bat, bot & batte, from the Old English batt which may have been from Celtic (the Irish & Scots Gaelic bat & bata meant “staff, cudgel”.  The Middle English verb batten, came partly from the noun, influenced by the Old French batre (batter).  Wing dates from the mid-twelfth century and was from the Middle English plural nouns winge & wenge, from the Old Danish wingæ (the other Nordic forms including the Norwegian & Swedish vinge and the Old Norse vǣngr (wing of a flying animal, wing of a building)).  In the Old Norse, the architectural sense of “a building’s wing” extended to nautical use, a vængi a “ship's cabin”.  The Nordic forms came from the Proto-Germanic wēingijaz, from the primitive Indo-European hweh- (to blow (hence the connection with “flapping” & “wind”).  The cognates included the Danish vinge (wing), the Swedish vinge (wing) and the Icelandic vængur (wing).  In English, “wing” came to replace the Middle English fither, from the Old English fiþre, from the Proto-Germanic fiþriją), which merged with the Middle English fether (from Old English feþer, from Proto-Germanic feþrō).  The spellings bat wing & bat-wing are also used.  Batwing is a noun and adjective, batwinged & batwingish are adjectives; the noun plural is batwings.

Gothic Batwing Sleeved Mermaid Long Dress by Punk Design (left) and Gothic Black A-Line wedding dress with leg Slit, batwing sleeves and bat hem by Wulgaria Couture (right).  Goths like batwings (usually in black with the odd splash of purple), the flowing sleeves often paired with leather or the more accommodating “wet latex look”.  Wulgaria Couture describe the A-Line style as a “wedding dress in gothic black” but it’s available also in a blood red for those non-Goths who like the batwing aesthetic.

Alfa Romeo BAT 5 (1953, left), BAT 7 (1954, centre) and BAT 9 (1955, right), designed by Franco Scaglione (1916–1993).

The Alfa Romeo BAT (Berlina Aerodinamica Tecnica, best translated as “exploration of aerodynamic principles in cars”) concept cars were among the most stylistically adventurous (and aerodynamically successful) of the transatlantic movement in the 1950s which focused on applying the lessons learned from progress in aeronautics during World War II (1939-1945).  The tail fin had been seen as early as the 1920s and their role in enhancing straight-line stability was imported directly from aircraft design but on the road they’d tended to be single, upright structures, best remembered from the use in the pre-war Czechoslovakian Tatras, intriguing things which, configured with a rear-mounted V8 engine, at speed needed a “stabilizing fin” more than most.  However, it was in the 1950s, when such publicity was afforded to jet aircraft, rockets & missiles, that designers took a renewed interest in fins & wings.  In the US, they quickly became extravagances, divorced from any functional relationship to fluid dynamics much beyond the merely coincidental but for Europeans, for whom fuel was more expensive and incomes lower, it was understood aerodynamics alone could improve both a vehicle’s economy and its performance.

Batwings: A grey-headed flying fox.

The performance of the trio was, by contemporary standards, remarkable, all able to attain in excess of 200 km/h (125 mph), despite being powered by a relatively small 1.9 litre (115 cubic inch) engine, albeit one fitted with double overhead camshafts (DOHC).  The wings (the BAT acronym for the cars was opportunistic) were just one part on a design which in all aspects was intended to optimize air-flow and although even at the time there were cars with smaller frontal areas, the BATs gained much of their advantage from the lowering of the front coachwork and the drag coefficient (CD) of the three ranged from 0.19-0.23, impressive even today.  It’s on BAT 7 that the batwing motif is most pronounced, the wings extending as a single structure from the base of the A-pillar, at the rear tilting and sweeping in an arc towards the centre-line.  When the metalworkers in the coach-building house first saw the design, their reaction was something like that of the structural engineers on first viewing the “sails” on the blueprints of Jørn Utzon’s (1918–2008) Sydney Opera House but they rose to the occasion.  The design would never have been suitable for mass-production; the famous fins on the US cars of the era were not only simpler structures but also designed in a way which accommodated the relatively “lose” manufacturing tolerances which permitted them being built quickly and at scale.  Perhaps tellingly, BAT 9 appeared with appendages less batwing-like and more attuned to the way Detroit was doing things.

It's the batwings which made BAT 7 the most memorable of the three and in 2008, Carrozzeria Bertone (builders of the original trio) built the Alfa Romeo BAT 11dk prototype, a conceptual rendering in clay, Styrofoam & filler, designed to use the underpinnings of the Alfa Romeo 8C Competizione.  Commissioned by a former owner of BAT 7, the Global Financial Crisis (GFC) scuttled its appearance at the Geneva Motors Show and certainly any prospect of a small production run or even a one-off creation.

Misty was a weekly British comic magazine for girls which, unusually, was found also to enjoy a significant male readership.  Published UK house Fleetway, it existed only between 1978-1980 although Misty Annual appeared until 1986.  The cover always featured the eponymous, raven haired beauty.  Befitting its theme, bats often featured in the artwork.

Lindsay Lohan in Anger Management (2013) demonstrates the batwing (left), defined by the tied hair extending upwards from the scalp before cascading, as distinct from the “pig tail” (centre) which extends from the scalp at close to 90^o before cascading.  Batwings can be single ties (centred or asymmetric) but more typically appear symmetrically to the sides, in emulation of the wings of a bat.  There are also batwing hair clips (right), also called “batwing hair claws” which is more evocative.

Chevrolet Bel Air: 1957 (left), 1958 (centre) and 1959 (right).

The 1959-1960 Chevrolets quickly picked up the nickname “batwing” and richly it was deserved; there was nothing like them at the time and there’s been nothing since.  The 1959 range actually had a strange and rushed gestation.  The fins on the 1955-1956-1957 cars (the so-called “tri-five Chevies”) had grown upwards in the fashion of the time but the corporation decided something different was needed and for 1958 chose baroque, the embryonic batwings obvious now but it was only when the next year’s model was released they would be understood thus.  The reason the General Motors (GM) 1958 body shape would last only one season was that at time it suffered by comparison with the sleek Chryslers; it was thought frumpy and even bloated and that it was released into that year’s short but sharp recession, didn’t help. The re-design for 1959 had its flaws (many of which (including toning down the batwings) were fixed for 1960) but it could never have been called “frumpy” and the “cats eye” taillights are admired even today.  Still the market didn’t respond as GM would have liked and the batwings soon flew off; by 1963 the Chevrolet was so blandly inoffensive it was being described as “a little bit like every car ever built”.  It proved a great success.

1960 Chevrolet "bubbletop" Impala Sport Coupe (left) and 1963 Ford Consul Capri (right).  On the 1960 Chevrolets, the memorable “cats eye” taillights were replaced by round units, three aside for the top-of-the-line Impala, two for the less expensive Bel Air & Biscayne.

For 1960, Chevrolet made the batwings a little less “batwingish” and the idea travelled across the Atlantic, Ford in the UK applying the scaled-down motif to their Ford Consul Classic (1961-1963) and Consul Capri (1961-1964), the latter a two-door coupé which the company wanted to be thought of as a “co-respondent's car” (ie the sort of rakish design which would appeal to the sort of chap who slept with other men’s wives, later to be named as the “co-respondent” in divorce proceedings).  Whether or not the “batwingettes” played a part isn’t known but neither the Classic nor the Capri were successful.