Showing posts sorted by date for query Contra. Sort by relevance Show all posts
Showing posts sorted by date for query Contra. Sort by relevance Show all posts

Friday, April 3, 2026

Surplus

Surplus (pronounced sur-pluhs)

(1) Something that remains above what is used or needed.

(2) In agricultural economics, produce or a quantity of food grown by a nation or area in excess of its needs, especially such a quantity of food purchased and stored by a governmental program of guaranteeing farmers a specific price for certain crops.

(3) In accounting, the excess of assets over liabilities accumulated throughout the existence of a business, excepting assets against which stock certificates have been issued; excess of net worth over capital-stock value.

(4) In public finance, an excess of government revenues over expenditures during a certain financial year.

(5) In international trade, an excess of receipts over payments on the balance of payments.

(6) In economic theory, an unsold quantity of a good resulting from a lack of equilibrium in a market.  For example, if a price is artificially high, sellers will bring more goods to the market than buyers will be willing to buy.  In classical economics, the opposite of shortage.

(7) In Chancery law (and its successor courts), the remainder of a fund appropriated for a particular purpose.

1325–1375: From the Middle English surplus, from the Old French sorplus (remainder, extra), from the Medieval Latin superplūs (excess, surplus), the construct being super (over) + plūs (more).  The Italian surplus was a borrowing from modern French where surplus had existed since the twelfth century while in English, surplus has been used as an adjective since the fourteenth century.  Enjoying the same pronunciation, surplice and surplus are often confused.  A surplice is a liturgical vestment of the Christian Church, usually styled as a tunic of white linen or cotton material, with wide sleeves and often some lace embellishment or embroidered edges.  Lengths vary; in medieval times it reached almost to the ground but tends now to be shorter; some still retain the longer garments for the ceremonial.  As surplis, it was a thirteenth century Middle-English borrowing from the Anglo-French surpliz, a syncopated variant of Old French surpeliz, derived from the Medieval Latin superpellīcium (vestīmentum) over-pelt (garment), neuter of superpellīcius, the construct being super (over) + pellīt(us) (clothed with skins or fur) + -ius (the adjectival suffix).  A clerical surplice is thus a kind of frock; a clerical surplus means "too many priests".  Surplus is a noun, adjective & verb, surplusage is a noun and surplused & surplussing are verbs; the noun plural is surpluses or surplusses.

Surplus Repression

German-American Herbert Marcuse (1898–1979), a sociologist and philosopher, highly influential in the mid-late twentieth century.  Even today, Marcuse enjoys a cult following and remains a hate-figure for those on the right who trace the ills of Western civilization to the corrosive influence Marxist & neo-Marxists exerted on youth in the newly expanded universities in the 1960s & 1970s.

A critique of capitalism’s culture and economic arrangements, Marcuse's book Eros and Civilization (1955) drew, inter alia, from Karl Marx (1818-1883) and Sigmund Freud (1856-1939) and described an alternative structure for society.  He didn’t reject Freud’s idea that repression of man's instinctive desires was necessary for civilization to endure but Marcuse distinguished between basic (or necessary) repression and surplus repression, detailing the differences between the biological vicissitudes of the instincts and the socially imposed.  His construct was that basic repression was that which man suppresses to permit peaceful societies to form; repression or modification of the instincts being necessary “…for the perpetuation of the human race in civilization.”  Surplus repression meant those “…restrictions necessitated by [the] social domination” of the particular ruling-class or hegemony.  The purpose of surplus repression was to shape the instincts of individuals to conform to the requirements of modern capitalism, a surrender to what Marcuse called the “performance principle”, a construct building on Marx’s theories of alienation and surplus value.

Lindsay Lohan and her lawyer in court, Los Angeles, 2011.

Marcuse's writing did have the attraction of being more accessible than that of Marx or Freud (and certainly that of many neo-Marxists or Freudians) but that also meant it was easier for critics to cherry pick the points they found most objectionable.  For an explanation of why society need to be organized the way it was, conservatives seemed to prefer the rationalization of the "harsh but deliciously cleverEnglish philosopher Thomas Hobbes (1588–1679) best known for his book Leviathan (1651) in which appeared the memorable passage describing the life of man in a world where there existed no restraining authorities forcing people to repress their worst instincts:

In such condition, there is no place for industry; because the fruit thereof is uncertain: and consequently no culture of the earth; no navigation, nor use of the commodities that may be imported by sea; no commodious building; no instruments of moving, and removing, such things as require much force; no knowledge of the face of the earth; no account of time; no arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.

Such a culture Hobbes called the "state of nature" by which he meant not an environmentally sustainable hippie commune but a place in which there was "bellum omnium contra omnes" (war of all against all) and murder went unpunished except by another murder.  Although the distinction is now an unfashionable one to draw, conservatives liked the way Hobbes seemed to know not all cultures were civilizations and that a little surplus repression was a small price to pay for for its benefits.  Hobbes lived through troubled times and his views on the importance of stable, strong governance should be understood as the writings of one who had seen what the alternative looks like but as a list of exculpatory bullet-points, his world view was one which could be ticked off by by the ayatollahs in Tehran or the CCP (Chinese Communist Party).  Marcuse is not so transportable.

Peace man: PotM (Playmate of the Month) Debbie Ellison (b 1949) on the cover of Playboy magazine, September 1970.  That year's PotY (Playmate of the Year) was Sharon Clark (b 1943).  With due respect to Ms Ellison, sometimes, it really may have been bought for the articles: Michael G Horowitz's profile of Marcuse was published in this edition.  The old curmudgeon of the left wouldn’t have had much sympathy for hippies and their piece sign because neither appeared to be doing much to bring on the revolution and was anyway once heard to remark: “Ach, women!  Useless in a revolutionary situation!

Playboy titled the profile Portrait of the Marxist as an Old Trooper although the author (one of the philosopher's old students) preferred to call the piece a "personality snapshot" and it certainly had a different flavor than what would have been found in the activist press or journals of political science.  Years later, the author would concede some of his critique of Marcuse's work was misplaced and many of the old pessimist's predictions had (unfortunately) transpired.  That said, Marcuse seems never to have complained about the piece, unlike Albert Speer (1905–1981; Nazi court architect 1934-1942; Nazi minister of armaments and war production 1942-1945) whose interview by Eric Norden, conducted over an apparently convivial ten days in the “richly furnished living room of his spacious home” in Heidelberg, was published in Playboy’s June 1971 edition.  Speer would later complain the piece had been “…restructured, with words and formulations entirely foreign to me.  He did however conclude “…on the whole the interview as printed corresponds with my opinions…” by which he meant Nordon was yet another to accept an recycle his core position: “If I didn't see it [the Holocaust], then it was because I didn't want to see it.  That was the so-called “Billigung defense” which Speer since 1945 had, in a masterful manner, used simultaneously to accept a collective guilt yet absolve himself of individuality responsibility.  Others no more guilty but less cunning had been hanged at Nuremberg and the Playboy interview was printed years before material was discovered in the German federal archives documenting his part in the persecution of Jews and the discovery of private correspondence in which he admitted knowing of the holocaust and its awful, chilling rationale.  As one of his biographers, Gitta Sereny (1921–2012), rightly pointed out in Albert Speer: His Battle with Truth (1995): “If Speer had said as much in Nuremberg, he would have been hanged.

Marcuse’s work was acknowledged as a landmark in the synthetization of Marxist and psychoanalytic theories but was criticized for being just another of the "pointless utopian myths" written of since antiquity, work cut adrift from the moorings of the political reality which seemed in the 1960s more urgently to demand attention.  Marcuse acknowledged the distance of his work from reality and conceded his theories could reach actualization only by revolution or gradual infiltration of the structures of the power-elite and, after the disappointments of the moments in 1968 when revolution fleetingly was in the air, he preferred the latter.  German student activist Rudi Dutschke (1940–1979) had advocated a "march through the institutions of power", radically to change society from within government and cultural institutions by becoming part of the machinery and structures under which capitalism operated.  This too owed a debt to the theories of hegemony and Marcuse wrote to Dutschke in 1971 saying he “regarded your notion of the "march through the institutions" as the only effective way.”  It all failed.  It was the highly unusual coincidence of political, economic & demographic circumstances in the post war (1948-1973) Western world which briefly in 1968 made the system seem internally vulnerable and the hegemony learned the lesson: they would control who manned the institutions that matter and the trouble-makers could march through things like theatre trusts, literary festivals and art gallery committees.

Tuesday, February 10, 2026

CONELRAD

CONELRAD (pronounced kon-ill-rad or kon-ill-rid)

As an acronym: CONtrol of ELectromagnetic RADiation, a Cold War era  system of emergency public broadcasting developed by the US in the mid 1950s.

Exclusive to the US, CONELRAD was a nationally standardized system of emergency public broadcasting (on the AM (amplitude modulation) medium-wave band at 640 & 1240 kHz) intended to operate in the event of enemy attack during the Cold War.  The original specifications for what emerged as CONELRAD was first discussed at the "Informal Government-Industry Technical Conference" (March, 1951) and later published by the FCC (Federal Communications Commission): "The primary plan for alerting broadcast stations that is currently being considered by the FCC Study Group is known as the Key Station System.  The arrangement requires certain telephone circuits (private wire or direct line to Toll Board) between the Air Defense Control Centers (ADCC) and specified radio stations to be known as Basic Key Stations & Relay Key Stations”.

Cold War PSA (public service announcement).

The essence of the system was each Basic Key Station upon receiving an alert or warning signal from the ADCC would, upon instruction, broadcast a predetermined message and also relay the message by telephone to all Relay Key Stations assigned to each Basic Key Station.  As a diversified network designed to be able to continue functioning even if various parts were destroyed, it was conceptually similar to a later US military project which would later evolve into the internet.  Intended to be simple, robust and able to reach as wide a possible audience in the shortest possible time, CONELRAD used simple protocols for alerting the public and other "downstream" stations, consisting of a sequence of shutting the station off for five seconds, returning to the air for five seconds, again shutting down for five seconds, and then transmitting a tone for 15 seconds.  Key stations would be alerted directly and all other broadcast stations would monitor a designated station in their area.

In the event of an attack on the US, all domestic television and FM (frequency modulation) radio stations were required immediately to cease broadcasting and upon alert, almost all AM stations shut down, those remaining on-air transmitting either on 640 or 1240 kHz.  No transmission would last more than a few minutes and upon one going “off-air” another would take over the frequency on a ”round robin” chain, this to confuse enemy aircraft which might be navigating using RDF (Radio Direction Finding), a technique first widely used in the early days of World War II (1939-1945).  In the US, all radio sets manufactured between 1953-1963 were required to have the two frequencies marked by the triangle-in-circle (CD Mark), the symbol of Civil Defense organizations.  In 1963, CONELRAD was replaced by the EBS (Emergency Broadcast System) which operated until 1997 when all responsibilities were assumed by the FCC.

Diet Coke product placement in Mean Girls (2004).  One of the clues in identifying product placement is that items carefully are placed so brand-names are always legible.

Product placement, a technique on marketing in which products are brands are “worked into” something like a film or television programmes, is now so ubiquitous (witness the frequent appearance in Mean Girls (2004) of Coca-Cola, Doritos, Cheetos, Dunkin' Donuts, Red Bull, Silk Milk, Taco Bell etc) that there are now internet sleuths gleefully who document each instance.  Frequently, the presence of a product is merely an example of “brand awareness” with no substantive effect on the plot (in most cases it’s of no significance whether the characters drive Fords or Buicks or drink Pepsi or Coca-Cola) although there have been some deemed morally or politically dubious and variously they’ve involved things like alcohol, tobacco or firearms or institutions like the US military.  Known also as “embedded marketing”, the technique is most associated with commercial cinema where the stuff is easy to interpolate but there have been examples even in literary fiction, the best known being The Bulgari Connection (2001) by Fay Weldon (1931-2023).  In that, in exchange for an undisclosed payment, the author was required to make a specified number of mentions of the Italian luxury goods house Bulgari (generously, greatly she exceeded the quota).  Of course, that’s an example which became notorious and it’s not known how many other “respectable” novelists have been subsidized this way.

Stromberg-Carlson radio (with CONELRAD settings arrowed in red) promoted as one of the many plusses” in the ownership of one of the Ford Motor Company's new Edsels.  In Australia, the phrase it seemed like a good idea at the time”  is known colloquially as the streaker's defence”.

The companion technique is “product association”.  Here, a company seeks in some obvious way to be associated with someone or some institution and in every glossy magazine there will, in one form or another, be probably dozens of examples.  Usually, “product association” is contractual with the consideration (usually cash or some form of contra arrangement) flowing one way or the other but the technique can also be executed as a form of “ambush marketing” (a hotel hiring for a morning a number of Ferraris, Lamborghinis and such to park outside for a photo-shoot, thereby hoping the “prestige” of the brands will “rub off”, despite the manufacturers receiving not a peppercorn for their unwitting participation).  More conventionally, it’s a normal commercial transaction entered into on terms agreeable to both parties and, if thought mutually beneficial, it may be on the basis of NMA (no monetary action).  In the matter of Stromberg-Carlson (by then a division of General Dynamics, now famous for nuclear submarines, warplanes and such) advertising their satisfaction at their new “transistorized” radio with “Town-and-Country tuning” being “one of the outstanding plus features of America’s newest car, the exciting Edsel”, it would have seemed like a good idea at the time.  By all accounts the Stromberg-Carlson car radios were fine devices but exhorting customers to: “See and drive the Edsel – it’s wonderful!” would have done nothing to enhance the corporate image.  That is of course a risk with product association: just as positive image can rub off, if things go awry, there’s a risk of that spreading too.  As it was, the Edsel venture floundered within three seasons but Stromberg-Carlson wasn’t part of the collateral damage.

1958 Edsel Citation Convertible, a failure with a fine CONERAD transistorized radio by Stromberg-Carlson.

Formed in 1894 as a partnership between Swedish immigrants Alfred Stromberg (1861-1913) and Androv Carlson (1854-1925), Stromberg-Carlson was for much of the twentieth century one of the dominant US manufacturers and distributors of electronics and telecommunications equipment.  As is modern corporate practice, Stromberg-Carlson became absorbed into other concerns and has since been part of the swirl of M&A (mergers & acquisitions) activities but it remains active in the industry.  Between 1906-1907, Alfred Stromberg dissolved his interests in telecommunications and formed what would become the Stromberg Motor Devices Company and ultimately Stromberg Carburetors.  In the post-war years, Zenith-Stromberg carburetors were used on a variety of British cars but they became well-known in the US after being adopted in the late 1960s because the company had a product which was ideally suited to complying with the increasingly stringent US emission regulations, the trade-off being some loss of performance, particularly at higher engine speeds.  In something like the Jaguar E-Type (XKE; 1961-1971), the switch from triple SU carburetors to dual Zenith-Strombergs meant the high-speed response suffered but, even in those happier days, there weren't than many who with any frequency explored how the things performed above 125 mph (200 km/h).

Sunday, February 25, 2024

Syzygy

Syzygy (pronounced siz-i-jee)

(1) In astronomy (actually borrowed from astrology!), the descriptor for either of the two positions (conjunction or opposition) of a celestial body when sun, earth, and the body lie in a straight line (since applied to the "straight-line configuration" of firstly three and later any number of celestial bodies in a gravitational system.

(2) Any two related things, either alike or opposite (obsolete except for historic references).

(3) In classical prosody, a group or combination of two feet, sometimes restricted to a combination of two feet of different kinds.

(4) In biology (especially zoology), the aggregation in a mass of certain protozoans, especially when occurring before sexual reproduction but can be used also when describing the asexual exchange of genetic material.

(5) In psychology, an archetypal pairing of contra-sexual opposites, symbolizing the communication of the conscious and unconscious minds.

(6) In mathematics, a relation between generators of a module.

(7) In medical pathology, a fusing of some or all of the organs.

(8) In genetics, the pairing of chromosomes in meiosis

1650-1660:  From the Late Latin sȳzygia (conjunction), from the Ancient Greek συζυγία (suzugía) (yoke of animals, pair, union of two, conjunction), from syzygein (to yoke together), the construct being an assimilated form of syn- (together) + zygon (yoke), from the primitive Indo-European root yeug- (to join).  In the Greek, the word produced also zeugnýnai (to yoke together), sometimes simplified in English transcription as synzugon.  In English, syzygy was adopted by astronomy in 1847.  In science there are a number of terms of classification based on syzygy, the most attractive of which is probably Syzygium samarangense (a taxonomic species within the family Myrtaceae (wax apple or Javan rose apple).  

In progress.

Syzygy was one of those words from the once respectable field of astrology later adopted by a number of scientific disciplines (astronomy, genetics, psychiatry, mathematics, zoology) and retained, even after astrology became widely regarded as disreputable.  In mathematics and the physical sciences, it was a handy descriptor of things which became paired or, however briefly, were in alignment although historically the emphasis was on "pair", a syzygy as able to be applied to an identical pair as two diametric opposites.  That permissiveness is now listed by most dictionaries as obsolete but is something to be noted when reading historic texts.

The origin of the application of the word in disciplines like psychiatry and psychology (noted more by its appearance in literary works than professional or academic papers) is thought by some to have been triggered by Russian philosopher Vladimir Solovyova (1853–1900) who used syzygy to denote “close union” and applied the concept in a variety of ways which influenced Russian writers not only in the nineteenth century but also those of the symbolist and neo-idealist movements of the later Soviet era and some critics agree Solovyov was at least one of the sources for Fyodor Dostoevsky's (1821–1881) characters Alyosha and Ivan Karamazov in The Brothers Karamazov (1880).  Very much in the tradition of   More controversial is the idea his book, The Meaning of Love (1892) (in which syzygy was introduced) is one of the philosophical sources of Leo Tolstoy's (1828-1910) much discussed The Kreutzer Sonata (1889); critics remain divided and opinions are argued with vigour although unusually united was the critical industry built around Carl Jung (1875–1961) and Sigmund Freud (1856-1939) (particularly the former's theories of the collective unconscious and the balancing of conscious and unconscious elements within an individual's psyche, although this was metaphorical and abstract compared to the use in astronomy and other sciences) which found strands of syzygy in the many themes of the self which so permeates their work.  Given the overarching concepts of (1) the individuation process and (2) the unions of individuals, especially of male and female tending to a totality, even a unity, it’s a word with some appeal to those who seem to value having something with such a range of adaptable meanings to use in works of speculative vagueness.

Monday, January 22, 2024

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 (1946-1947) was powered by the 37-litre (2240 cubic inch) V12 Rolls-Royce Griffon (1941-1955) and was the final evolution of the Spitfire (1938-1948) derived Seafire (1943-1947) and Spiteful (1944), 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 (1945-1950) proved capable of carrier operations, surprising some at the Admiralty who doubted the jets could operate from anywhere but land.

Contra-rotating propellers (known also as coaxial contra-rotating propellers) were implemented on some World War II (1939-1945) aircraft to address several aerodynamic and performance challenges associated with the fitting of piston engines developing power well in excess of anything the designers had envisaged.  The attraction were many and included reducing the “torque Reaction”, the phenomenon in which the torque generated by a spinning propeller cause an aircraft to yaw in the opposite direction of the propeller's rotation.  Pilots had long been trained to counteract this by use of the rudder (especially during take-off and low-speed-flight) but as engine power rose and propeller blades became bigger, heavier and more numerous, the effect greatly was exaggerated.  On two or four-engined machines, the obvious solution was to have the blades on each wing rotate in opposite directions but on the most powerful of the single-engined fighters, the two units were mounted one behind the other and this had the benefit also of allowing the rear propeller to recover energy from the swirling airflow (the slipstream) generated by the forward.  That allowed designers to harness the greater power without increasing the diameter of the propellers, avoiding issues with ground clearance and supersonic tip speeds (one of the reasons the Soviet Air Force’s swept-wing (unusually in a propeller aircraft) Tupolev Tu-95 (Bear) bomber (in service 1956-1993) was so loud was because the propeller tips exceeded the speed of sound).  Had jet technology not emerged when it did, the contra-rotating propellers would have become more common, wartime adoption was limited by the complexity in assembly and additional maintenance demands.

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.

Wednesday, January 10, 2024

Asymmetric

Asymmetric (pronounced a-sim-et-rick)

(1) Not identical on both sides of a central line; unsymmetrical; lacking symmetry.

(2) An asymmetric shape.

(3) In logic or mathematics, holding true of members of a class in one order but not in the opposite order, as in the relation “being an ancestor of”.

(4) In chemistry, having an unsymmetrical arrangement of atoms in a molecule.

(5) In chemistry, noting a carbon atom bonded to four different atoms or groups.

(6) In chemistry (of a polymer), noting an atom or group that is within a polymer chain and is bonded to two different atoms or groups that are external to the chain.

(7) In electrical engineering, of conductors having different conductivities depending on the direction of current flow, as of diodes

(8) In aeronautics, having unequal thrust, as caused by an inoperative engine in a twin-engined aircraft.

(9) In military theory, a conflict where the parties are vastly different in terms of military capacity.  This situation is not in all circumstances disadvantageous to the nominally inferior party.

(10) In gameplay, where different players have different experiences

(11) In cryptography, not involving a mutual exchange of keys between sender a7 receiver.

(12) In set theory, of a relation R on a set S: having the property that for any two elements of S (not necessarily distinct), at least one is not related to the other via R.

1870–1875: The construct was a- + symmetric.  The a- prefix was from the Ancient Greek - (a-) (ν-) (an- if immediately preceding a vowel) and was added to stems to created the sense of "not, without, opposite of".  The prefix is referred to as an alpha privative and is used with stems beginning with consonants (except sometimes “h”); “an-“ is synonymous and is used in front of words that start with vowels and sometimes “h”.  Symmetric was from the Latin symmetria from Ancient Greek συμμετρία (summetría).  Symmetry was from the 1560s in the sense of "relation of parts, proportion", from the sixteenth century French symmétrie and directly from the Latin symmetria, from the Greek symmetria (agreement in dimensions, due proportion, arrangement", from symmetros (having a common measure, even, proportionate), an assimilated form of syn- (together) + metron (measure) from the primitive Indo-European me- (to measure).  The meaning "harmonic arrangement of parts" dates from the 1590s.  The suffix -ic was from the Middle English -ik, from the Old French -ique, from the Latin -icus, from the primitive Indo-European -kos & -os, formed with the i-stem suffix -i- and the adjectival suffix -kos & -os.  The form existed also in Ancient Greek as -ικός (-ikós), in Sanskrit as -इक (-ika) and the Old Church Slavonic as -ъкъ (-ŭkŭ); A doublet of -y.  In European languages, adding -kos to noun stems carried the meaning "characteristic of, like, typical, pertaining to" while on adjectival stems it acted emphatically.  In English it's always been used to form adjectives from nouns with the meaning “of or pertaining to”.  A precise technical use exists in physical chemistry where it's used to denote certain chemical compounds in which a specified chemical element has a higher oxidation number than in the equivalent compound whose name ends in the suffix -ous; (eg sulphuric acid (H₂SO₄) has more oxygen atoms per molecule than sulphurous acid (H₂SO₃).  Asymmetric & asymmetrical are adjectives, asymmetricity, asymmetricality, asymmetricalness & asymmetry are nouns and asymmetrically is an adverb; the noun plural is asymmetries.

The usually symmetrically attired Lindsay Lohan demonstrates the possibilities of asymmetry.

1975 Kawasaki 750 H2 Mach IV.

Manufacturers of triple-cylinder motorcycles traditionally used single (3 into 1) or symmetrical (3 into 2) exhaust systems (although, during the 1970s, Suzuki offered some of their "Ram-Air" models with a bizarre 3 into 4 setup (the centre cylinder’s header bifurcated) but in 1969 Kawasaki adopted an asymmetric addition for one of the memorable machines of the time.  The Kawasaki 500 H1 Mach III had two outlets to the right, one to the left and was a fast, lethally unstable thing which was soon dubbed the "widow maker".  Improvements to the Mach III made it a little more manageable and its successor, the 750 H2 Mach IV was claimed to be better behaved but was faster still and best enjoyed by experts, preferably in a straight line although, with a narrow power band which peaked with a sudden rush, even that could be a challenge.  The Kawasaki triples remain the most charismatic of the Japanese motorcycles but the prototype had been even more intriguing, using an "asymmetric V" with the two outer cylinders upright while the central barrel was at 90o so, viewed in profile it appeared a conventional 90o vee engine, the novelty obvious only from other aspects.  There were genuine advantages in cooling and weight distribution but ultimately the complexity was thought unjustified and the project was cancelled when doubts were expressed about market-acceptance. 

1973 Triumph X-75 Hurricane.

Available only during 1972-1973 and produced in small numbers, the Triumph X75 Hurricane was typical of the motorcycles being produced by the British manufacturers which had neglected development and re-investment and consequently were unable adequately to respond to the offerings of the Japanese industry which had done both aplenty.  Whatever their charms, models like the X75 were being rendered obsolescent, some of the underlying technology dating back decades yet, without the capital to invest, this was as good as it got and some of the fudges of the era were worse.  The X-75 was however ahead of its time in one way, it was a “factory special”, a design influenced by what custom shops in the US had been doing as one-offs for customers and in the years ahead, many manufacturers would be attracted by the concept and its healthy profit margins.  The X-75 is remembered also for the distinctive asymmetric stack of three exhaust pipes on the right-hand side a look adopted in the twenty-first century by MV Agusta and others.

1985 Ferrari Testarossa (1984-1991) monospecchio-monodado.

Some of Ferrari's early-production Testarossas were fitted with a single high-mounted external mirror, on the left or right depending on the market into which it was sold and although the preferred term was the Italian “monospecchio” (one mirror), in the English speaking-world it was quickly dubbed the “flying mirror" (rendered sometimes in Italian as “specchio volante” (a ordinary wing mirror being a “specchietto laterale esterno”, proving everything sounds better in Italian)).  The unusual placement and blatant asymmetry troubled some and delighted others, the unhappy more disgruntled still if they noticed the vent on right of the front spoiler not being matched by one to the left.  It was there to feed the air-conditioning’s radiator and while such offset singularities are not unusual in cars, many manufacturers create a matching fake as an aesthetic device: Ferrari did not.  The mirror’s curious placement was an unintended consequence of a European Union regulation (and it doubtful many institutions have in a relatively short time created as many regulations of such collective length as the EU) regarding the devices and this was interpreted by the designers as having to provide 100% rearward visibility.  Because of the sheer size of the rear bodywork necessitated by the twin radiators which sat behind the side-strakes (another distinctive Testarossa feature), the elevation was the only way this could be done but it later transpired the interpretation of the law was wrong, a perhaps forgivable mistake given the turgidity of EU legalese.

The Blohm & Voss BV 141

Focke-Wulf Fw 189 Eurl (Owl).

In aircraft, designs have for very good reason (aerodynamics, weight distribution, flying characteristics, ease of manufacture etc) tended to be symmetrical, sometimes as an engineering necessity such as the use of contra-rotating propellers on some twin-engined airframes, a trick to offset the destabilizing effects of the torque when very potent power-plants are fitted.  There has though been the odd bizarre venture into structural asymmetry, one of the most intriguing being the Blohm & Voss BV 141, the most distinctive feature of which was an offset crew-capsule.  The BV 141 was tactical reconnaissance aircraft built in small numbers and used in a desultory manner by the Luftwaffe (the German air force) during World War II (1939-1945) and although it was studied by engineers from many countries with some prototypes built, the layout never entered mainstream use. The origin of the curious craft lay in a specification issued in 1937 by the Reichsluftfahrtministerium (RLM; the German Air Ministry) which called for a single-engine reconnaissance aircraft, optimized for visual observation and, in response, Focke-Wulf responded with their Fw 189 Eurl (Owl) which, because of the then still novel twin-boomed layout, encountered some resistance from the RLM bureaucrats but it found much favor with the Luftwaffe; over the course of the war, some nine-hundred entered service and it was used almost exclusively as the German's standard battlefield reconnaissance aircraft.  In fact, so successful did it prove in this role that the other configurations it was designed to accommodate (liaison and close-support ground-attack) were never pursued.  Although its performance was modest, it was a fine airframe with superb flying qualities and an ability to absorb punishment which, on the Russian front where extensively it was deployed, became famous and captured examples provided Russian aeronautical engineers with ideas which would for years influence their designs.

1982 Ford (Australia) XE Fairmont Ghia 5.8 (351) ESP.  Finding asymmetry in unexpected places brings joy to some and annoys others.

The RLM had also invited Arado to tender but their Ar 198, although featuring an unusual under-slung and elongated cupola which afforded for the observer a uniquely panoramic view, proved unsatisfactory in test-flights and development ceased.  Blohm and Voss hadn't been included in the RLM's invitation but anyway chose to offer a design which was radically different even by the standards of the innovative Fw 189.  The asymmetric BV 141 design was eye-catching with the crew housed in an extensively glazed capsule, offset to starboard of the centre-line with a boom offset to the left which housed the single-engine in front with the tail to the rear.  Prototypes were built as early as 1938 and the Luftwaffe conducted operational trials over both the UK and USSR between 1939-1941 but, despite being satisfactory in most respects, the Bv 141 was hampered by poor performance, a consequence of using an under-powered engine.  A re-design of the structure to accommodate more powerful units was begun but delays in development and the urgent need for the up-rated engines for machines already in production doomed the project and the Bv 141 was in 1943 abandoned.

Blohm & Voss BV 141 prototype with full-width rear elevators & stabilizers.

Production Blohm & Voss BV 141 with port-only rear elevator & stabilizer.

Despite the ungainly appearance, test-pilots reported the Fw 141 was a nicely balanced airframe, the seemingly strange weight distribution well compensated by (1) component placement, (2) the specific lift characteristics of the wing design and (3) the choice of opposite rotational direction for crankshaft and propeller, the torque generated used as a counter-balance.  Nor, despite the expectation of some, were there difficulties in handling whatever behavior was induced by the thrust versus drag asymmetry and pilots all indicated some intuitive trimming was all that was needed to compensate for any induced yaw.  The asymmetry extended even to the tail-plane, the starboard elevator and horizontal stabilizer removed (to afford the tail-gunner a wider field of fire) after the first three prototypes were built; surprisingly, this was said barely to affect the flying characteristics.  Focke-Wolf pursued the concept, a number of design-studies (including a piston & turbojet-engine hybrid) initiated but none progressed beyond the drawing-board.

Asymmetric warfare

In the twenty-first century, the term “asymmetric warfare” became widely used.  The concept describes conflicts in which there are significant disparities in power, capability and strategies between opposing forces and although the phrase has become recently fashionable, the idea is ancient, based often on the successes which could be exploited by small, mobile and agile (often irregular) forces against larger, conventionally assembled formations.  Reports of such tactics are found in accounts of conflicts in Asia, Africa, the Middle East and Europe from as early as reliable written records have been found.  The classic example is what came later to be called “guerrilla warfare”, hit-and-run tactics which probe and attack a weak spots as they are detected, the ancestor of insurgencies, “conventional” modern terrorism and cyber-attacks.  However, even between conventional national militaries there have long been examples of the asymmetric such as the use of small, cheap weapons like torpedo boats and mines which early in the twentieth century proved effective against the big, ruinously expensive Dreadnoughts.  To some extent, the spike in use of the phrase in the post-Cold War era happened because it provided such a contrast between the nuclear weapon states which, although having a capacity to destroy entire countries without having one soldier step foot on their territory, found themselves vulnerable to low-tech, cleverly planned attacks.

Although the term “asymmetric warfare” encompasses a wide vista, one increasingly consistent thread is that it can be a difficult thing for "conventional" military formations to counter insurgencies conducted by irregular combatants who, in many places and for much of the time, are visually indistinguishable from the civilian population.  The difficulty lies not in achieving the desired result (destruction of the enemy) but managing to do so without causing an “excessive” number of civilian causalities; although public disapproval has meant the awful phrase “collateral damage” is now rarely heard, civilians (many of them women & children) continue greatly to suffer in such conflicts, the death toll high.  Thus the critique of the retaliatory strategy of the Israel Defence Force (IDF) in response to the attack by the Hamas on 7 October 2023, Palestinian deaths now claimed to exceed 20,000; that number is unverified and will include an unknown number of Hamas combatants but there is no doubt the percentage of civilian deaths will be high, the total casualty count estimated early in January 2024 at some 60,000.  What the IDF appear to have done is settle on the strategy adopted by Ulysses S Grant (1822–1885; US president 1869-1877) in 1863 when appointed head of the Union armies: the total destruction of the opposing forces.  That decision was a reaction to the realization the previous approach (skirmishes and the temporary taking of enemy territory which was soon re-taken) was ineffectual and war would continue as long as the other side retained even a defensive military capacity.  Grant’s strategy was, in effect: destroy the secessionist army and the secessionist cause dies out.

In the US Civil War (1861-1965) that approach worked though at an appalling cost, the 1860s a period when ballistics had advanced to the point horrific injuries could be inflicted at scale but battlefield medical tools and techniques were barely advanced from Napoleonic times.  The bodies were piled high.  Grant’s success was influential on the development of the US military which eventually evolved into an organization which came to see problems as something not to be solved but overwhelmed by the massive application of force, an attitude which although now refined, permeates from the Pentagon down to platoon level.  As the US proved more than once, the strategy works as long as there’s little concern about “collateral damage”, an example of this approach being when the Sri Lankan military rejected the argument there was “no military solution” to the long running civil war (1983-2009) waged by the Tamil Tigers (the Liberation Tigers of Tamil Eelam (LTTE)).  What “no military solution” means is that a war cannot be won if the rules of war are followed so the government took the decision that if war crimes and crimes against humanity were what was required to win, they would be committed.

In the 1990s, a number of political and military theorists actually advanced the doctrine “give war a chance”, the rationale being that however awful conflicts may be, if allowed to continue to the point where one side gains an unambiguous victory, the dispute is at least resolved and peace can ensue, sometimes for generations.  For most of human history, such was the usual path of war but after the formation of the United Nations (UN) in 1945 things changed, the Security Council the tool of the great powers, all of which (despite their publicity) viewed wars as a part of whatever agenda they were at the time pursuing and depending on this and that, that meant their interests sometimes lay in ending conflicts and sometimes in prolonging them.  In isolation, such an arrangement probably could have worked (albeit with much “collateral damage”) but over the years, a roll-call of nations run by politicians appalled by the consequences of war began to become involved, intervening with peace plans,  offering mediation and urging the UN to deploy “peacekeeping” forces, something which became an international growth industry.  Added to that, for a number of reasons, a proliferation of non-government organizations (NGO) were formed, many of which concerned themselves with relief programmes in conflict zones and while these benefited may civilians, they also had the effect of allowing combatant forces to re-group and re-arm, meaning wars could drag on for a decade or more.

In the dreadful events in Gaza, war is certainly being given a chance and the public position of both the IDF and the Israeli government is that the strategy being pursued is one designed totally “to destroy” not merely the military capacity of Hamas but the organization itself.  Such an idea worked for Grant in the 1860s and, as the Sri Lankan military predicted they would, end-game there was achieved in 2009 on the basis of “total destruction”.  However, Gaza (and the wider Middle East) is a different time & place and even if the IDF succeeds in “neutralizing” the opposing fighters and destroying the now famous network of tunnels and ad-hoc weapons manufacturing centres, it can’t be predicted that Hamas in some form won’t survive and in that case, what seems most likely is that while the asymmetry of nominal capacity between the two sides will be more extreme than before, Hamas is more likely to hone the tactics than shift the objective.  The IDF high command are of course realists and understand there is nothing to suggest “the Hamas problem” can be solved and being practical military types, they know if a problem can’t be solved it must be managed.  In the awful calculations of asymmetric conflict, this means the IDF calculate that while future attacks will happen, the more destructive the response now, the longer will be the interval before the next event.