Monocoque

Monocoque (pronounced mon-uh-kohk or mon-oh-kok (non-U))

(1) A type of boat, aircraft, or rocket construction in which the shell carries most of the stresses.

(2) A type of automotive construction in which the body is combined with the chassis as a single unit.

(3) A unit of this type.

1911: From the French monocoque (best translated as “single shell” or “single hull” depending on application), the construct being mono- + coque.  Mono was from the Ancient Greek μόνος (monos) (alone, only, sole, single), from the primitive Indo-European root men (small, isolated).  Coque was from the Old French coque (shell) & concha (conch, shell), from the Latin coccum (berry) and concha (conch, shell) from the Ancient Greek κόκκος (kókkos) (grain, seed, berry).  In the early twentieth century, it was the French who were most dominant in the development of aviation.  Words like “monocoque”, “aileron”, “fuselage” and “empennage” are of French origin and endure in English because it’s a vacuum-cleaner of a language which sucks in anything from anywhere which is handy and manageable.  Monocoque is a noun; the noun plural is monocoques.

Noted monocoques

Deperdussin Monocoque, 1912.

A monocoque (sometime referred to as structural skin) is a form of structural engineering where loads and stresses are distributed through an object's external skin rather than a frame; concept is most analogous with an egg shell. Early airplanes were built using wood or steel tubes covered with starched fabric, the fabric rendering contributing only a small part to rigidity.  A monocoque construction integrates skin and frame into a single load-bearing shell, reducing weight and adding strength.  Although examples flew as early as 1911, airframes built as aluminium-alloy monocoques would not become common until the mid 1930s.  In a pure design where only function matters, almost anything can be made a stressed component, even engine blocks and windscreens.

Lotus 25, 1962.

In automotive design, the word monocoque is often misused, treated as a descriptor for anything built without a separate chassis.  In fact, most road vehicles, apart from a handful of expensive exotics, are built either with a separate chassis (trucks and some SUVs) or are of unibody/unitary construction where box sections, bulkheads and tubes to provide most of the structural integrity, the outer-skin adding little or no strength or stiffness.  Monocoque construction was first seen in Formula one in 1962, rendered always in aluminium alloys until 1981 when McLaren adopted carbon-fibre.  A year later, the McLaren F1 followed the same principles, becoming the first road car built as a carbon-fibre monocoque.

BRM P83 (H16), 1966.

In 1966, there was nothing revolutionary about the BRM P83’s monocoque chassis.  Four years earlier, in the second season of the voiturette era, that revolution had been triggered by the Lotus 25, built with the first fully stressed monocoque chassis, an epoch still unfolding as materials engineering evolves; the carbon-fibre monocoques seen first in the 1981 McLaren MP4/1 becoming soon ubiquitous.  The P83 used a monocoque made from riveted Duralumin (the word a portmanteau of durable and aluminium), an orthodox construction for the time.  Additionally, although it had been done before and would soon become an orthodoxy, what was unusual was that the engine was a stressed part of the monocoque.

BRM Type 15 (V16), 1949.

The innovation was born of necessity.  Not discouraged by the glorious failure of the extraordinary V16 BRM had built (with much much fanfare and precious little success) shortly after the war, the decision was taken again to join together two V8s in one sixteen cylinder unit.  Whereas in 1949, the V8s had been coupled at the centre to create a V16, for 1966, the engines were re-cast as 180^o flat 8s with one mounted atop another in an H configuration, a two-crankshaft arrangement not seen since the big Napier-Sabre H24 aero-engines used in the last days of the war.  The design yielded the advantage that it was short, affording designers some flexibility in lineal placement, but little else.  It was heavy and tall, exacerbating further the high centre of gravity already created by the need to raise the engine location so the lower exhaust systems would clear the ground.  Just as significantly, it was wide, too wide to fit into a monocoque socket and thus was taken the decision to make the engine an integral, load-bearing element of the chassis.  There was no other choice.

BRM H16 engine and gearbox, 1966.

 

Structurally, it worked, the monocoque was strong and stable and despite the weight and height, the P83 might have worked if the H16 had delivered the promised horsepower but the numbers were never realised.  The early power output was higher than the opposition but it wasn’t enough to compensate for the drawbacks inherent in the design and, these being so fundamental they couldn’t be corrected, the only hope was even more power.  The path to power was followed and modest increases were gained but it was never enough and time ran out before the plan to go from 32 to 64 valves could come to fruition, an endeavour some suggested would merely have “compounded the existing error on an even grander scale.”  Additionally, with every increase in power and weight, the already high fuel consumption worsened.

The H16 did win one grand prix, albeit in a Lotus rather than a BRM monocoque, but that was a rare success; of the forty times it started a race, twenty-seven ended prematurely.  The irony of the tale is that in the two seasons BRM ran the 440 horsepower H16 with its sixteen cylinders, two crankshafts, eight camshafts and thirty-two valves, the championship in both years was won by the Repco-Brabham, its engine with 320 horsepower, eight cylinders, one crankshaft, two camshafts and sixteen valves.  Adding insult to the exquisitely bespoke H16’s injury, the Repco engine was based on an old Oldsmobile block which General Motors had abandoned.  After two seasons the H16 venture was retired, replaced by a conventional V12.

The Mercedes-Benz SLR McLaren

Mercedes-Benz McLaren SLR Coupé (left), Roadster (centre) and Speedster (right).

The monocoque Mercedes-Benz SLR McLaren (C199 / R199 / Z199) was a joint development with McLaren Automotive and was available as a coupé (2003-2010), roadster (2007-2009) & speedster (2009).  Visually, the car was something of an evocation of the 300 SLR gullwing coupé, two of which were built in 1955 for use in competition but never used, one of the consequences of the disaster that year during the Le Mans 24 hour endurance classic when a 300 SLR crashed into the crowd, killing 84 and injuring dozens of others.  Footage of that event is widely available and to a modern audience it will seem extraordinary the race was allowed to continue.

Lindsay Lohan, Britney Spears and Paris Hilton in Ms Hilton's Mercedes-Benz McLaren SLR, outside the Beverley Hills Hotel, Los Angeles.  This was the occasion which produced the photograph which appeared on the infamous “Bimbo Summit” front page of Rupert Murdoch’s (b 1931) New York Post, 29 November 2006.

The 300 SLR (Sport Leicht Rennsport (Sport Light Racing)) which crashed was an open version and the model name was a little opportunistic because it was essentially the W196R Formula One car with a 3.0 litre straight-8 (the F1 rules demanded a 2.5) so the SLR, built to contest the World Sports Car Championship, was technically the W196S; it became the 300 SLR to cross-associate it and the 300 SL gullwing (W198, 1954-1957).  Nine were built, two of which were converted to SLR gullwings and, although never raced, they came to be dubbed the “Uhlenhaut coupés” because they were co-opted by racing team manager Rudolf Uhlenhaut (1906–1989) as high-speed personal transport, tales of his rapid trips between German cities soon the stuff of legend and even if a few myths developed, the cars could exceed 290 km/h (180 mph) so some at least were probably true.  That what was essentially a Grand Prix race car with a body and headlights could be registered for road use is as illustrative as safety standards at Le Mans of how different was the world of the 1950s.  In 2022, one of the Uhlenhaut coupés was sold at auction to an unknown buyer (presumed to be Middle Eastern) for US$142 million, becoming by some margin the world’s most expensive used car.

As a footnote (one to be noted only by the subset of word nerds who delight in the details of nomenclature), for decades, it was said by many, even normally reliable sources, that SL stood for sports Sports Leicht (sports light) and the history of the Mercedes-Benz alphabet soup was such that it could have gone either way (the SSKL (1929) was the Super Sports Kurz (short) Leicht (light) and from the 1950s on, for the SL, even the factory variously used Sports Leicht and Super Leicht.  It was only in 2017 it published a 1952 paper (unearthed from the corporate archive) confirming the correct abbreviation is Super Leicht.  Sports Leicht Rennsport (Sport Light Racing) seems to be used for the the SLRs because they were built as pure race cars, the W198 and later SLs being road cars but there are references also to Super Leicht Rennsport.  By implication, that would suggest the original 300SL (the 1951 W194) should have been a Sport Leicht because it was built only for competition but given the relevant document dates from 1952, it must have been a reference to the W194 which is thus also a Sport Leicht.  Further to muddy the waters, in 1957 the factory prepared two lightweight cars based on the new 300 SL Roadster (1957-1963) for use in US road racing and these were (at the time) designated 300 SLS (Sports Leicht Sport), the occasional reference (in translation) as "Sports Light Special" not supported by any evidence.  The best quirk of the SLS tale however is the machine which inspired the model was a one-off race-car built by Californian coachbuilder ("body-man" in the vernacular of the West Coast hot rod community) Chuck Porter (1915-1982).  Porter's SLS was built on the space-fame of a wrecked 300 SL gullwing (purchased for a reputed US$500) and followed the lines of the 300 SLR roadsters as closely as the W198 frame (taller than that of the W196S) allowed.  Although it was never an "official" designation, Porter referred to his creation as SL-S, the appended "S" standing for "scrap".      

The SLR and its antecedents.

A Uhlenhaut coupé and a 300 SLR of course appeared for the photo sessions when in 2003 the factory staged the official release of the SLR McLaren and to may explicit the link with the past, the phrase “gullwing doors” appeared in the press kit documents no less than seven times.  Presumably, journalists got the message but they weren’t fooled and the doors have always, correctly, been called “butterflies”.  Unlike the machines of the 1950s which were built with an aluminium skin atop a space-frame, the twenty-first century SLRs were a monocoque (engineers say the sometimes heard “monocoque shell” is tautological) of reinforced carbon fibre.  Although the dynamic qualities were acknowledged and it was, by all but the measure of hyper-cars, very fast indeed, the reception it has enjoyed has always been strangely muted, testers seeming to find the thing rather “soulless”.  That seemed to imply a lack of “character” which really seems to suggest an absence of obvious flaws, the quirks and idiosyncrasies which can at once enrage and endear.

The nature of monocoque.

The monocoque construction offered one obvious advantage in that the inherent stiffness was such that the creation of the roadster version required few modifications, the integrity of the structure such that not even the absence of a roof compromised things.  Notably, the butterfly doors were able to be hinged along the windscreen (A) pillars, such was the rigidity offered by carbon fibre, a material for which the monocoque may have been invented.  McLaren would later use a variation of this idea when it released the McLaren MP4-12C (2011-2014), omitting the top hinge which allowed the use of frameless windows even on the roadster (spider) version.

The SLR Speedster (right) was named the Stirling Moss edition and was a homage to the 300 SLR (left) which in the hands of Sir Stirling Moss (1929–2020) and navigator Denis Jenkinson (1920–1996), won the 1955 Mille Miglia (an event run on public roads in Italy over a distance of 1597 km (992 miles)) at an average speed of 157.65 km/h (97.96 mph).

However, the minimalist (though very expensive) Speedster had never been envisaged when the monocoque was designed and to ensure structural integrity, changes had to be made to strengthen what would have become points of potential failure, the removal of the windscreen fame and assembly having previously contributed much to rigidity.  Door sills were raised (recalling the space frame which in 1951 had necessitated the adoption of the original gullwing doors on the first 300 SL (W194)) and cross-members were added across the cockpit, integrated with a pair of rollover protection bars.  Designed for speed, the Speedster eschewed niceties such as air-conditioning, an audio system, side windows and sound insulation; this was not a car for Paris Hilton.  All told, despite the additional bracing, the Speedster weighed 140 kg (310 lb) less than the coupé while the supercharged 5.5 litre V8 was carried over from the earlier 722 edition but the reduction in frontal area added a little to top speed, now claimed to be 350 km/h (217 mph) although the factory did caution that above 160 km/h (100 mph), the dainty wind deflectors would no longer contain the wind and a crash helmet would be required so even if the lack of air-conditioning might have been overlooked, that alone would have been enough for Paris Hilton to cross the Speedster off her list; she wouldn't want "helmet hair".  Only 75 were built, none apparently ever driven, all spending their time on display or the auction block, exchanged between collectors.

Mutation

Mutation (pronounced myoo-tey-shuhn)

(1) In biology (also as “break”), a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome.

(2) In biology, (also as “sport”), an individual, species, or the like, resulting from such a departure.

(3) The act or process of mutating; change; alteration.

(4) A resultant change or alteration, as in form or nature.

(5) In phonetics (in or of Germanic languages), the umlaut (the assimilatory process whereby a vowel is pronounced more like a following vocoid that is separated by one or more consonants).

(6) In structural linguistics (in or of Celtic languages), syntactically determined morphophonemic phenomena that affect initial sounds of words (the phonetic change in certain initial consonants caused by a preceding word).

(7) An alternative word for “mutant”

(8) In cellular biology & genetics, a change in the chromosomes or genes of a cell which, if occurring in the gametes, can affect the structure and development of all or some of any resultant off-spring; any heritable change of the base-pair sequence of genetic material.

(9) A physical characteristic of an individual resulting from this type of chromosomal change.

(10) In law, the transfer of title of an asset in a register.

(11) In ornithology, one of the collective nouns for the thrush (the more common forms being “hermitage” & “rash”)

1325–1375: From the Middle English mutacioun & mutacion (action or process of changing), from the thirteenth century Old French mutacion and directly from the Latin mūtātion- (stem of mūtātiō) (a changing, alteration, a turn for the worse), noun of action from past-participle stem of mutare (to change), from the primitive Indo-European root mei- (to change, go, move).  The construct can thus be understood as mutat(e) +ion.  Dating from 1818, the verb mutate (to change state or condition, undergo change) was a back-formation from mutation.  It was first used in genetics to mean “undergo mutation” in 1913.  The –ion suffix was from the Middle English -ioun, from the Old French -ion, from the Latin -iō (genitive -iōnis).  It was appended to a perfect passive participle to form a noun of action or process, or the result of an action or process. The use in genetics in the sense of “process whereby heritable changes in DNA arise” dates from 1894 (although the term "DNA" (deoxyribonucleic acid) wasn't used until 1938 the existence of the structure (though not its structural detail) was fist documented in 1869 after the identification of nuclein).  In linguistics, the term “i-mutation” was first used in 1874, following the earlier German form “i-umlaut”, the equivalent in English being “mutation”.  The noun mutagen (agent that causes mutation) was coined in 1946, the construct being muta(tion) + -gen.  The –gen suffix was from the French -gène, from the Ancient Greek -γενής (-genḗs).  It was appended to create a word meaning “a producer of something, or an agent in the production of something” and is familiar in the names of the chemical elements hydrogen, nitrogen, and oxygen.  From mutagen came the derive forms mutagenic, mutagenesis & mutagenize.  Mutation, mutationist & mutationism is a noun, mutability is a noun, mutable & mutant are nouns & adjectives, mutated & mutating are verbs & adjectives, mutational & mutationistic are adjective and mutationally is an adverb; the noun plural is mutations.  For whatever reasons, the adverb mutationistically seems not to exist.

In scientific use the standard abbreviation is mutat and forms such as nonmutation, remutation & unmutational (used both hyphenated and not) are created as required and there is even demutation (used in computer modeling).  In technical use, the number of derived forms is vast, some of which seem to enjoy some functional overlap although in fields like genetics and cellular biology, the need for distinction between fine details of process or consequence presumably is such that the proliferation may continue.  In science and linguistics, the derived forms (used both hyphenated and not) include animutation, antimutation, backmutation, e-mutation, ectomutation, endomutation, epimutation, extramutation, frameshift mutation, hard mutation, heteromutation, homomutation, hypermutation, hypomutation, i-mutation, intermutation, intramutation, intromutation, macromutation, macromutational, megamutation, mesomutation, micromutation, missense mutation, mixed mutation, multimutation, mutationless, mutation pressure, nasal mutation, neomutation, nonsense mutation, oncomutation, paramutation. Pentamutation, phosphomutation. point mutation, postmutation, premutation, radiomutation, retromutation, soft mutation, spirant mutation, stem mutation, stereomutation, ultramutation & vowel mutation.

Ginger, copper, auburn & chestnut are variations on the theme of red-headedness: Ranga Lindsay Lohan demonstrates the possibilities.

Red hair is the result of a mutation in the melanocortin 1 receptor (MC1R) gene responsible for producing the MC1R protein which plays a crucial role also in determining skin-tone. When the MC1R gene is functioning normally, it helps produce eumelanin, a type of melanin that gives hair a dark color.  However, a certain mutation in the MC1R gene leads to the production of pheomelanin which results in red hair.  Individuals with two copies of the mutated MC1R gene (one from each parent) typically have red hair, fair skin, and a higher sensitivity to ultraviolet (UV) light, a genetic variation found most often in those of northern & western European descent.

A mutation is a change in the structure of the genes or chromosomes of an organism and mutations occurring in the reproductive cells (such as an egg or sperm), can be passed from one generation to the next.  It appears most mutations occur in “junk DNA” and the orthodox view is these generally have no discernible effects on the survivability of an organism.  The term junk DNA was coined to describe those portions of an organism's DNA which do not encode proteins and were thought to have no functional purpose (although historically there may have been some).  The large volume of these “non-coding regions” surprised researchers when the numbers emerged because the early theories had predicted they would comprise a much smaller percentage of the genome.  The term junk DNA was intentionally dismissive and reflected the not unreasonable assumption the apparently redundant sequences were mere evolutionary “leftovers” without an extant biological function of any significance.

However, as advances in computing power have enabled the genome further to be explored, it’s been revealed that many of these non-coding regions do fulfil some purpose including: (1) A regulatory function: (the binary regulation of gene expression, influencing when, where, and how genes are turned on or off; (2) As superstructure: (Some regions contribute to the structural integrity of chromosomes (notably telomeres and centromeres); (3) In RNA (ribonucleic acid) molecules: Some non-coding DNA is transcribed into non-coding RNA molecules (such as microRNAs and long non-coding RNAs), which are involved in various cellular processes; (4) Genomic Stability: It’s now clear there are non-coding regions which contribute to the maintenance of genomic stability and the protection of genetic information.  Despite recent advances, the term junk DNA is still in use in mapping but is certainly misleading for those not immersed in the science; other than in slang, in academic use and technical papers, “non-coding DNA” seems now the preferred term and where specific functions have become known, these regions are described thus.

There’s also now some doubt about the early assumptions that of the remaining mutations, the majority have harmful effects and only a minority operate to increase an organism's ability to survive, something of some significance because a mutation which benefits a species may evolve by means of natural selection into a trait shared by some or all members of the species.  However, there have been suggestions the orthodox view was (at least by extent) influenced by the slanting of the research effort towards diseases, syndromes and other undesirable conditions and that an “identification bias” may thus have emerged.  So the state of the science now is that there are harmful & harmless mutations but there are also mutations which may appear to have no substantive effect yet may come to be understood as significant, an idea which was explored in an attempt to understand why some people found to be inflected with a high viral-load of SARS-Cov-2 (the virus causing Covid-19) remained asymptomatic.

In genetics, a mutation is a change in the DNA sequence of an organism and it seems they can occur in any part of the DNA and can vary in size and type.  Most associated with errors during DNA replication, mutations can also be a consequence of viral infection or exposure to certain chemicals or radiation, or as a result of viral infections.  The classification of mutations has in recent years been refined to exist in three categories:

(1) By the Effect on DNA Sequence:  These are listed as Point Mutations which are changes in a single nucleotide and include (1.1) Substitutions in which one base pair is replaced by another, (1.2) Insertions which describe the addition of one or more nucleotide pairs and (1.3) Deletions, the removal of one or more nucleotide pairs.

(2) By the Effect on Protein Sequence: These are listed as: (2.1) Silent Mutations which do not change the amino acid sequence of the protein, (2.2) Missense Mutations in which there is a change one amino acid in the protein, potentially affecting its function, (2.3) Nonsense Mutations which create a premature stop codon, leading to a truncated and usually non-functional protein and (2.4) Frameshift Mutations which result from insertions or deletions that change the reading frame of the gene, often leading to a completely different and non-functional protein.

(3) By the Effect on Phenotype: These are listed as (3.1) Beneficial Mutations which provide some advantage to the organism, (3.2) Neutral Mutations which have no apparent significant effect on the organism's fitness and (3.3) Deleterious Mutations which are harmful to the organism and can cause diseases or other problems.

(4) By the Mechanism of Mutation: These are listed as (4.1) Spontaneous Mutations which occur naturally without any external influence, due often to errors in DNA replication and (4.2) Induced Mutations which result from exposure to mutagens environmental factors such as chemicals or radiation that can cause changes in DNA),

Because of the association with disease, genetic disorders and disruptions to normal biological functions, in the popular imagination mutations are thought undesirable.  They are however a crucial part of the evolutionary process and life on this planet as it now exists would not be possible without the constant process of mutation which has provided the essential genetic diversity within populations and has driven the adaptation and evolution of species.  Although it will probably never be known if life on earth started and died out before beginning the evolutionary chain which endures to this day, as far as is known, everything now alive (an empirically, that means in the entire universe) ultimately has a single common ancestor.  Mutations have played a part in the diversity which followed and of all the species which once have inhabited earth, a tiny fraction remain, the rest extinct.

Nuclear-induced mutations

Especially since the first A-Bombs were used in 1945, the idea of “mutant humans” being created by the fallout from nuclear war or power-plants suffering a meltdown have been a staple for writers of science fiction (SF) and producers of horror movies, the special-effects and CGI (computer generated graphics) crews ever imaginative in their work.  The fictional works are disturbing because radiation-induced human mutations are not common but radiation can cause changes in DNA, leading to mutations and a number of factors determine the likelihood and extent of damage.  The two significant types of radiation are: (1) ionizing radiation which includes X-rays, gamma rays, and particles such as alpha and beta particles.  Ionizing radiation has enough energy to remove tightly bound electrons from atoms, creating ions and directly can damage DNA or create reactive oxygen species that cause indirect damage.  In high doses, ionizing radiation can increase the risk of cancer and genetic mutations and (2) non-ionizing radiation which includes ultraviolet (UV) light, visible light, microwaves, and radiofrequency radiation.  Because this does not possess sufficient energy to ionize atoms or molecules, which there is a risk of damage to DNA (seen most typically in some types of skin cancer), but the risk of deep genetic mutations is much lower than that of ionizing radiation.  The factors influencing the extent of damage include the dose, duration of exposure, the cell type(s) affected, a greater or lesser genetic predisposition and age.

Peter Dutton (b 1970; leader of the opposition and leader of the Australian Liberal Party since May 2022) announces the Liberal Party's new policy advocating the construction of multiple nuclear power-plants in Australia.

The prosthetic used in the digitally-altered image (right) was a discarded proposal for the depiction of Lord Voldemort in the first film version of JK Rowling's (b 1965) series of Harry Potter children's fantasy novels; it used a Janus-like two-faced head.  It's an urban myth Mr Dutton auditioned for the part when the first film was being cast but was rejected as being "too scary".  If ever there's another film, the producers might reconsider and should his career in politics end (God forbid), he could bring to Voldemort the sense of menacing evil the character has never quite achieved.  Interestingly, despite many opportunities, Mr Dutton has never denied being a Freemason.

On paper, while not without challenges, Australia does enjoy certain advantages in making nuclear part of the energy mix: (1)  With abundant potential further to develop wind and solar generation, the nuclear plants would need only to provide the baseload power required when renewable sources were either inadequate or unavailable; (2) the country would be self-sufficient in raw uranium ore (although it has no enrichment capacity) and (3) the place is vast and geologically stable so in a rational world it would be nominated as the planet's repository of spent nuclear fuel and other waste.  The debate as it unfolds is likely to focus on other matters and nobody images any such plant can in the West be functioning in less than twenty-odd years (the Chinese Communist Party (CCP) gets things done much more quickly) so there's plenty of time to squabble and plenty of people anxious to join in this latest theatre of the culture wars.  Even National Party grandee Barnaby Joyce (b 1967; thrice (between local difficulties) deputy prime minister of Australia 2016-2022) has with alacrity become a champion of all things nuclear (electricity, submarines and probably bombs although, publicly, he seems not to have discussed the latter).  The National Party has never approved of solar panels and wind turbines because they associate them with feminism, seed-eating vegans, homosexuals and other symbols of all which is wrong with modern society.  While in his coal-black heart Mr Joyce's world view probably remains as antediluvian as ever, he can sniff the political wind in a country now beset by wildfires, floods and heatwaves and talks less of the beauty of burning fossil fuels.  Still, in the wake of Mr Dutton's announcement, conspiracy theorists have been trying to make Mr Joyce feel better, suggesting the whole thing is just a piece of subterfuge designed to put a spanner in the works of the transition to renewable energy generation, the idea being to protect the financial positions of those who make much from fossil fuels, these folks being generous donors to party funds and employers of "helpful" retired politicians in lucrative and undemanding roles.

Blackwing

Blackwing (pronounced blak-wing)

(1) In zoology (mostly ornithology, entomology & ichthyology), a widely used descriptor of birds, insects, certain water-dwellers and the odd bat.

(2) As Blackwing 602, a pencil with a cult following, manufactured by the Eberhard Faber between 1934-1988, by Faber-Castell 1988 to 1994 and by Sanford 1994-1998.  A visually (though not technically) similar pencil has since 2012 been produced by Palomino.

(3) A high-performance V8 engine manufactured by the Cadillac division of General Motors (GM) between 2018-2020.  Cadillac continues to use Blackwing name for the some of its sedans.

1100s (originally of birds, first informally, later in formal taxonomy): The construct was black + wing.  Black (In the sense of the “color”) was from the Middle English blak, black & blake, from the Old English blæc (black, dark (also "ink”)), from the Proto-West Germanic blak, from the Proto-Germanic blakaz (burnt (and related to the Dutch blaken (to burn)), from the Low German blak & black (blackness, black paint, (black) ink), from the Old High German blah (black), which may be from the primitive Indo-European bhleg- (to burn, shine).  The forms may be compared with the Latin flagrāre (to burn), the Ancient Greek φλόξ (phlóx) (flame) and Sanskrit भर्ग (bharga) (radiance).  Black in this context was “a color” lacking hue and brightness, one which absorbs light without reflecting any of the rays composing it.  In the narrow technical sense, black is an absolute (absorbing light without reflecting any of the rays composing it) but in general use, as a descriptor or color, expressions of graduation or tincture are used, thus the comparative is blacker and the superlative blackest.  The usual synonyms are ebony, sable, inky, sooty, dusky & dark while the antonym is white.  Wing (in the sense used in “flight”) was from the twelfth century Middle English winge & wenge, from the Old Norse vængr (wing of a flying animal, wing of a building), from the Proto-Germanic wēingijaz, from the primitive Indo-European hweh- (to blow (thus the link with “wind”)).  It was cognate with the Old Danish wingæ (wing), the Norwegian & Swedish vinge (wing), the Old Norse vǣngr and the Icelandic vængur (wing).  It replaced the native Middle English fither, from the Old English fiþre, from the Proto-Germanic fiþriją (which merged with the Middle English fether (from the Old English feþer, from the Proto-Germanic feþrō)).  The original use was of birds but this quickly extended to things where a left-right distinction was useful such as architecture, sport and military formations (later extended to organizational structures in air forces).  Blackwing is a noun & adjective; the noun plural is blackwings.  In commercial use, as a registered trademark, an initial capital is used.

Quite why Cadillac (the premium brand of General Motors (GM) since 1909) chose the seemingly improbable “Blackwing” as a name for an engine and later the premium, high-performance versions (the V-Series) of its sedans (a now rare body-style in North America) is said to date to the very origin of the brand, more than a century earlier.  It was to recall the stylized black birds which appeared on the corporate crest first in 1902 (although not widely used until 2005 and trademarked in 1906).  That escutcheon was adopted as a tribute to the French explorer (some are less generous in their descriptions) Antoine Laumet de La Mothe, sieur de Cadillac (1658-1730) who in 1701 founded the settlement which became the city of Detroit.

Evolution of the Cadillac Crest: Antoine Laumet's original (and dubious) family crest (top left), A early Cadillac from 1905 (top centre), from a 1960 Coupe DeVille (top right), with the restored laurel wreath on the unfortunate vinyl roof of a 1968 Eldorado (bottom left), a post 2014 version without couronne & merelettes (bottom centre) and the current versions (bottom right), the black & white edition an illuminated badge created to mark the transition to electric propulsion; it's currently available as an option on petrol vehicles.  The illuminated grill badge was a trick long used by the English manufacturer Wolseley (1901-1975). 

Although of bourgeois origin and having departed France surreptitiously after “some unpleasantness”, shortly after arriving in the new world, Antoine Laumet re-invented himself, adopting a title of nobility named after the town of Cadillac in south-west France and in some histories, it wasn’t unusual for him to claim some vague descent from the royal line, a story common among many of Europe’s aristocratic families and his “family crest” was wholly his own invention.  Such things were possible then.  The Cadillac company modified the crest but retained the most distinctive elements: (1) The couronne (crown (from the Old French corone, from the Latin corōna, from the Ancient Greek κορώνη (korṓnē)) symbolized the six ancient courts of France; (2) The pearls (which appeared in various numbers on both the family & corporate versions) signified a family descended from the royal counts of Toulouse; (3) The shield denoted the military traditions of a noble family, the “warrior symbol” one of the most commonly used in heraldry while (4) The black birds were known as merlettes (an adaptation of the martin), mythical small birds without beaks or feet and never touching the ground, always in flight; they represent a constant striving for excellence, and when presented as a trio, referenced the Holy Trinity and thus a family’s adherence to Christianity.  The merelettes appeared often on the standards flown by knights during the late Medieval Christian Crusades staged to recapture the Holy Land but they didn’t disappear from the Cadillac crest in deference to sensibilities in the Middle East (a market of increasing value to GM).  Like the crown, the black birds were removed in 2000 as a part of a modernization exercise, the aim to achieve something “sharper and sleeker”, the more angular look of the new “Art and Science” philosophy of design.  “Art and Science” was from the class of slogans campaign directors of corporations and political parties adore because they mean nothing in particular while sounding like they must mean something.

A Cadillac Escalade driven by Lindsay Lohan receiving a parking infringement notice (US$70) for obstructing access to a fire hydrant, Los Angeles, September 2011.  The crest’s laurel wreath would remain until 2014 but the merelettes had been removed a decade earlier.

Prestige by associative semiotics: Emblem of the 1971 HQ Statesman de Ville by GMH (General Motors-Holden's).

Cadillac over the years made may detail changes to the corporate crest and structurally, the most significant addition came in 1963 when an almost enclosing laurel wreath returned (it had been there in 1902 but was gone by 1908, returning for a run between 1916-1925) and it proved the most enduring design thus far, maintained until 2014.  It clearly had some cross-cultural appeal because in 1971 Holden (GM’s now defunct Australian outpost) made a point of issuing a press release informing the country “special permission” had been received from Detroit for them to borrow the wreath to surround the Holden crest on their new HQ Statesman de Ville, a car so special that nowhere on the thing did the word “Holden” appear, the same marketing trick Toyota would three decades on apply to the Lexus.

Well GM understood the symbolic significance of the wreath.  The Cadillac 62 (1940-1964) had existed as an "entry level" model (ie lower cost) after the shuttering of the LaSalle (1927-1940) and when it was replaced by the Calais (1965-1976), one signifier of its place in the hierarchy was the corporate crest appearing wreathless, unlike the more expensive de Ville & Eldorado.  However, unlike the accessories, ahat has remained constant throughout are the emblem's core colors and, according to Cadillac, black against gold symbolizes riches and wisdom; red means boldness and prowess in action; silver denotes purity, virtue, plenty and charity while blue stand for knightly valor.  Behind the and crest, the background is platinum (a high-value metal) and the whole combination is said to have been influenced by Piet Mondrian (1872–1944), a Dutch artist noted for his work with color and geometric shapes.

The elegant black-winged Damselfly, one of dozens of insects, birds, aquatic creatures and the odd bat known as the “black-winged” something.  One of some 150 species of Calopterygidae, the taxonomic name is Calopteryx maculata and the stylish little mosquito muncher is commonly found in North America, its other common name the ebony jewelwing.

Cadillac Blackwing V8.  It was a genuinely impressive piece of engineering but according to Road & Track magazine, Cadillac booked a US$16 million dollar loss against the project.    

Cadillac’s all aluminium Blackwing V8 was designed with an AMG-like specification which would once have seemed exotic to Cadillac owners.  Built in a single basic configuration, it featured a displacement of 4.2 litres (256 cubic inches), double overhead camshafts (DOHC), four valves per cylinder, cross-bolted main bearings and twin, intercooled turbochargers mounted in a “hot-V” arrangement (atop the block, between the cylinder banks) a layout which delivers improved responsiveness but, as BMW found, can bring its own problems.  Intended always to be exclusive to Cadillac’s lines (recalling GM’s divisional structure in happier times) it was in production less than two years because the collapse in demand for the models for which it was intended doomed its future; it was too expensive to produce to be used in other cars.  The early indications had however been hopeful, the initial run of 275 over-subscribed, a slightly detuned version accordingly rushed into production to meet demand.  In 2020, the Blackwood V8 was cancelled.

2025 Cadillac CT5-V Blackwing.

Repurposed, Blackwing however lives on at Cadillac, the company in 2021 appending applying the name to exclusive variants of its CT range sedans.  The CT5-V Blackwing is the last survivor of what once was a well-inhabited niche and although clearly an anachronism, demand still exists and although Cadillac has admitted this will be their last V8-powered sedan, in announcing the 2025 range they’ve made it clear the last days will be memorable.  In a nod to history, the company chose Le Mans in France to reveal details of the 2025 V-Series Blackwing “Special Editions”, honoring the “Le Monstre” and “Petit Pataud” Cadillacs which contested the 1950 24 hour endurance classic.  Each of those was a one-off (one especially so) but in 2025 there will be 101 copies of the Blackwing Le Monstre and 50 of the Petit Patauds.  The two are visually similar, the exteriors finished in Magnus Metal Frost matte paint, accented by Stormhawk Blue Carbon Fiber and Royal Blue brake callipers, the blue theme extened to the interior fittings.  Mechanically, the two are essentially stock, the Petit Pataud based on the CT4-V Blackwing powered by a twin-turbo 3.6 liter (223 cubic inch) V6 while the more alluring Le Monstre includes a supercharged 6.2-liter (376 cubic inch) V8.  For those who care about such things, although Mercedes-Benz AMG once offered rear-wheel-drive (RWD) 6.2 litre V8s, the Batwing offers the chance to enjoy the experience with a manual gearbox, something the Germans never did.  The Blackwings are also much cheaper and have about them an appealing brutishness, a quality Stuttgart’s engineers felt compelled to gloss a little.

2025 Cadillac CT5-V Blackwing.  Compared with some of the atmospheric interiors in the Cadillacs of old, the Blackwing is disappointingly close to what one finds in a Chevrolet but for a number of reasons, creating something which is both attractive and lawful is not as easy as once it was.  For many, the sight of the stick-shift and a clutch pedal means all is forgiven.

In something which would for most of the second half of the twentieth century have seemed improbable or unthinkable, it’s now possible to buy a Cadillac with a manual gearbox and a clutch pedal but not a Ferrari so configured.  Ferrari by 1976 had begun to flirt with automatic transmissions in their road cars (GM’s famously robust Turbo-Hydramatic 400) but until 2004, Cadillac hadn’t needed clutch pedal assemblies on the assembly lines since the last 1953 Series 75 (among the Cadillac crowd the Cimarron (1982-1988) is never spoken of except in the phrase “the unpleasantness of 1982”).  However, by the early twenty-first century, the market for the cars Cadillac had perfected was shrinking fast so, noting the success of Mercedes-AMG and the M-Series BMWs, Cadillac entered the fray and the existence of the Chevrolet Corvette’s transmission in the corporate parts bin meant offering a manual gearbox was financially viable in a way it wasn’t for the Germans.  In the same decade, advances in hydraulics and electronics meant the earlier inefficiencies and technical disadvantages attached to automatic transmissions had been overcome to the point where no Ferrari with a manual transmission, however expertly driven, could match their performance and customers agreed, sales of manual cars dwindling until a swansong when the Ferrari California was released in 2008 with expectations some 5-10% of buyers would opt for a clutch pedal.  However between then and late 2011, a mere three were ordered (some sources say two or five but the factory insists it was three).  Ever since, for Maranello, it’s been automatics (technically “automated manual transmission”) all the way and that wasn’t anything dictatorial; had customer demand existed at a sustainable level, the factory would have continued to supply manual transmissions.  The rarity has however created collectables; on the rare occasions a rare manual version of a usually automatic Ferrari is offered at auction, it attracts attracts a premium and there's now an after-market converting Ferraris to open gate manuals.  It's said to cost up to US$40,000 depending on the model and, predictably, the most highly regarded are those converted using "verified factory parts".  The Cadillac Blackwing offers the nostalgic experience from the factory although the engineers admit there is a slight performance penalty, buyers choosing the manual purely for the pleasure of driving.

The quincunx induction system, the Cadillac Le Monstre and the 24 Heures du Mans, 1950

Living up to the name: The 1950 Cadillac Le Monstre.

The two Cadillacs which in 1950 raced at Le Mans were mechanically similar but visually, could have been from different planets.  The more conventional Petit Pataud was a Series 61 coupe with only minor modification and it gained its nickname (the translation “clumsy puppy” best captures the spirit) because to the French it looked a lumbering thing but, as its performance in the race would attest, Cadillac’s new 331 cubic inch (5.4 litre) V8 (which would grow to 429 cubic inches (7.0 litres) before it was retired in 1967) meant it was faster than it looked.  Underneath the second entrant (Le Monstre obviously needing no translation but used in the sense of “monstrosity” rather than “large”) there was also a Series 61 but the body had been replaced by something more obviously aerodynamic although few, then or now, would call it “conventionally attractive”.  Although Le Monstre seemed very much in the tradition of the “cucumber-shaped” Mercedes-Benz SSKL which had won the 1932 race at Berlin’s unique AVUS circuit, the lines were the result of testing a one twelfth (Uncia in the Latin) scale wooden model in a wind-tunnel used usually to optimize the shape crop dusters and other slow-flying airplanes.  Presumably that explains the resemblance to a section of an airplane’s wing (a shape designed to encourage lift), something which would have been an issue had higher speeds been attained but even on the long (6 km (3.7 mile)) Mulsanne Straight, there was in 1950 enough power only to achieve around 210 km/h (130) mph although as a drag-reduction exercise it must have contributed to the 22 km/h (13 mph) advantage it enjoyed over Petit Pataud, something Le Monstre’s additional horsepower alone could not have done and remarkably, even with the minimalist aluminium skin it wasn’t much lighter than the standard-bodied coupe because this was no monocoque; the robust Cadillac chassis was retained with a tube-frame added to support the panels and provide the necessary torsional stiffness.

Le Monstre's 331 cubic inch V8 with its unusual (and possibly unique) five-carburetor induction system.  The layout (one in each corner, one in the centre) is a "quincunx", from the Latin quīncunx.

Some of the additional horsepower came from the novel "quincunx" induction system.  Le Monstre’s V8 was configured with five carburettors, the idea being that by use of progressive throttle-linkages, when ultimate performance wasn’t required the car would run on a single (central) carburettor, the other four summoned on demand and in endurance racing, improved fuel economy can be more valuable than additional power.  That’s essentially how most four-barrel carburettors worked, two venturi usually providing the feed with all four opened only at full throttle and Detroit would later refine the model by applying “méthode Le Monstre” to the triple carburettor systems many used between 1957-1971.  As far as is known, the only time a manufacturer flirted with the idea of a five carburetor engine was Rover which in the early 1960s was experimenting with a 2.5 (153 cubic inch) litre in-line five cylinder which was an enlargement of their 2.0 litre (122 cubic inch) four.  Fuel-injection was the obvious solution but the systems then were prohibitively expensive (for the market segment Rover was targeting) so the prototypes ended up with two carburettors feeding three cylinders and one the other two, an arrangement as difficult to keep in tune as it sounds.  Rover’s purchase of the aluminium 3.5 litre (214 cubic inch) V8 abandoned by General Motors (GM) meant the project was terminated and whatever the cylinder count, mass-produced fuel injection later made any configuration possible.  Five carburettors wasn’t actually the highest count seen in the pre fuel-injection era, Ferrari and Lamborghini both using six (done also by motorcycle manufacturers such as Honda and Benelli) and Moto-Guzzi in the 1950s fielded a 500 cm³ Grand-Prix bike with the memorable component count of 8 cylinders, 4 camshafts, 16 valves & 8 carburetors.  The early prototypes of Daimler’s exquisite hemi-head V8s (1959-1969) were also built with eight carburettors because the original design was based on a motorcycle power-plant, the reason why they were planned originally as air-cooled units.

Le Monstre ahead of Petit Pataud, Le Mans, 1950.  At the fall of the checkered flag, the positions were reversed. 

Motor racing is an unpredictable business and, despite all the effort lavished on Le Monstre, in the 1950 Le Mans 24 hour, it was the less ambitious Petit Pataud which did better, finishing a creditable tenth, the much modified roadster coming eleventh having lost many laps while being dug from the sand after an unfortunate excursion from the track.  Still, the results proved the power and reliability of Cadillac’s V8 and Europe took note: over the next quarter century a whole ecosystem would emerge, crafting high-priced trans-Atlantic hybrids which combined elegant European coachwork with cheap, powerful, reliable US V8s, the lucrative fun lasting until the first oil crisis began in 1973.

Perfection in a pencil: The Eberhard Faber Blackwing 602.  They were not cylindrical so, like a "carpenter's pencil", were less prone to rolling onto the floor.  

The Blackwing 602 remains fondly remembered by those who admire the perfect simplicity of the pencil.  Produced in the shape of a square ferrule (both pleasant to hold in one’s hand and less susceptible to rolling off the desk), it used a soft, dark graphite blend which required less pressure (the manufacturer claimed half but it’s not clear if this was science or “mere puffery”) to put what was wanted on paper.  To casual users, this may not sound significant but for those for whom pencilling was a full-time task (notably writers and artists), the advantages were considerable and the advertising claim “Half the Pressure, Twice the Speed” must have convinced one target market because the Blackwing 602 was a favourite of stenographers (a profession one of the early victims of the technological changes which have emerged in the wake of the transistor & microprocessor).  The Blackwing 602 was manufactured by Eberhard Faber between 1934-1988, by Faber-Castell (1988-1994) and by Sanford (1994-1998).  In 2012, after buying rights to the name, Palomino being production of a visually similar Blackwing but they didn’t quite replicate the graphite’s recipe.  Original Blackwing 602s are now a collectable and in perfect condition are advertised between US$50-100 although there was one recent outlier sale which benefited from a celebrity provenance.

Pencil porn.

Doyle’s in New York on 18 June 2024 conducted an auction of some items from the estate of US composer and lyricist Stephen Sondheim (1930–2021), attracting dealers, collectors & Sondheim devotees.  There was Lot 275: (Three blue boxes printed with "Eberhard Faber/Blackwing/Feathery-Smooth Pencils, two of the boxes complete with 12 pencils, one with 8 only (together 32 pencils).  Some wear to the boxes and drying of the erasers”, listed with a pre-sale estimate of US$600-800.  The hammer fell at US$6,400 against a pre-sale estimate of US$600-800.  That’s US$200.00 per pencil, indicating the value of a celebrity connection but whoever set the pre-sale estimate (US$18.75-25.00 per pencil) clearly didn’t check eBay.