Whirlwind

Whirlwind (pronounced wurl-wind)

(1) Any of several relatively small masses of air rotating rapidly around a more or less vertical axis and advancing simultaneously over land or sea, as a dust devil, tornado, or waterspout.

(2) Anything resembling a whirlwind, as in violent action or destructive force; an impetuously active person

(3) Any rush or violent onward course.

(4) As “like a whirlwind” as in speed or force; to move or quickly travel.

1300-1350: From the Middle English whirlewind & whirlewynde, the construct being whirl +‎ wind.  Source was probably the Old Norse hvirfilvindr which was cognate with the German wirbelwind.  From the Old Norse came the Icelandic hvirfilvindur, the Norwegian Nynorsk kvervelvind, the Norwegian Bokmål virvelvind & the Norwegian Nynorsk virvelvind.  Whirly-wind was (probably now extinct) nineteenth century Australian slang for a whirlwind, cyclone, tornado or dust devil and was from the Yindjibarndi wili wili (and it may have existed also in other First Nations languages in north-west Australia).  Whirlwind is a noun& adjective and whirlwindy & whirleindish are adjectives; the noun plural is whirlwinds.

Whirl was from the Middle English whirlen, contracted from the earlier whervelen, possibly from the Old English hweorflian, a frequentative form of the Old English hweorfan (to turn), from the Proto-Germanic hwerbaną (turn) or possibly the Old Norse hvirfla (to go round, spin).  It was cognate with the Dutch wervelen (to whirl, to swirl), the German wirbeln (to whirl, to swirl), the Danish hvirvle (to whirl), the Swedish virvla (the older spelling of which was hvirfla) and the Albanian vorbull (a whirl).  It’s related to the modern whirr and wharve.  Wind was from the Middle English wynd & wind, from the Old English wind (wind), from the Proto-Germanic windaz, from the primitive Indo-European hwéhn̥tos (wind), from the earlier hwéhn̥ts (wind), derived from the present participle of hweh (to blow). It was cognate with the Dutch wind, the German Wind, the West Frisian wyn, the Norwegian and Swedish vind, the Icelandic vindur, the Latin ventus, the Welsh gwynt, the Sanskrit वात (vā́ta), the Russian ве́тер (véter) and, more speculatively, the Albanian bundë (strong damp wind).  It’s related to the modern vent.

The phrase, "They that sow the wind, shall reap the whirlwind", comes from the Old Testament (Hosea 8:7).  It means that for all of us, one’s choices and decisions have consequences; one’s actions will one day return to haunt one.  Cynics tend to phrase it as: “For everything you do there’s a price to be paid”.  It’s sometimes confused with the Epistle to the Galatians (6:7) in the New Testament: “Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap”.  Whirlwind is thus popular in figurative use and in saying she had a "whirlwind of garbage around" herself, Lindsay Lohan conveyed the image of a life made difficult by a swirling vortex of undesirable baggage.  In noting her problems were of her own creation she added she was "my own worst enemy" but, at the time, that may have been unfair to Paris Hilton.    

RAF Westland Whirlwind (1939-1943).

A fine, if complex, airframe and a design ahead of its time, the Whirlwind never achieved its potential because of problems, essentially those of the doomed engine around which it was designed.  It was the Royal Air Force’s (RAF) first single-seat, twin-engined fighter, a layout explored by many air forces as a means of fielding a machine with sufficient range, armament and speed to counter the new generation of twin-engined bombers which, by the mid-1930s had proved able to out-pace most fighters then in service.  The prototype flew first in 1938 and had seemed promising, with many innovative features anticipating later designs, the radiators housed in the leading edges of the slim wings and the pilot’s afforded outstanding visibility by virtue of a large, clear bubble canopy.  Intended as a long-range escort fighter, the Whirlwind's firepower was impressive, boasting four 20mm cannons clustered in the nose which made it at the time the most potent fighter in the world.  Test pilots reported excellent handling characteristics, the only deficiencies noted as a lack of power and a very high landing speed which limited the number of airfields from which it could operate.

The Whirlwind was designed to use two Rolls-Royce Peregrine engines, a development of the well-regarded Kestrel but the manufacturer, absorbed with the refinement and production of the much more promising Merlin, was unable to devote sufficient resources and development of the Peregrine first stagnated and then ceased, the demand for the Merlins (used by the strategically vital Spitfire & Hurricane) so great that all of Rolls-Royce's productive capacity had to be dedicated to their supply.  As a result, there existed sufficient engines to build only 112 Whirlwinds which equipped two squadrons where they saw limited service between 1940-1943, mostly in a ground-attack role after being converted to (Mark 1A specification) fighter-bombers.  They were used in an escort role on a low-level raid to Cologne in August 1941 but the unsuitability of the then available bombers to undertake daytime operations was exposed when the attacking force lost almost a quarter of their aircraft, an unsustainable rate of loss.  Not suitable as a night-escort and hampered by the underpowered Peregrines which meant they couldn’t be deployed against single-engined fighters in a defensive role, the Whirlwinds were instead allocated to low-level sorties across the Channel, opportunistically attacking shipping, trains and physical infrastructure.

RAF de Havilland Hornet, 1946.

Interestingly, the fine high-altitude characteristics reported by the test pilots when flying the prototypes didn't translate to the production versions but in 1940, such was the urgency of the military situation the Whirlwinds were pressed into service without any attempt at rectification.  Blamed at the time either on the engines or the wing design, it was only years later that private research revealed it was a change in propeller specification which affected the performance, the prototype using Rotol units while the production aircraft were fitted with de Havilland propellers designed for a different aircraft, such mixing and matching far from unusual in wartime conditions.  The replacement propellers were thicker, the issue being that a rotating propeller blade pushes air aside and the thicker a blade, the more air needs to be moved and, all else being equal, that means that the air has to move faster and at a certain point, the air has to move faster than the speed of sound.  At that point (the sound barrier), shock waves are created which induces massive drag.  Propellers are designed to compensate for this effect but on the de Havilland units, the constant speed mechanism would react to the slowdown in airspeed caused by drag by altering the pitch of the blade which would create a feedback loop in the Peregrine, inducing erratic performance and the higher the altitude, the lower the speed of sound, thus the more unsatisfactory the performance of the Whirlwind at altitude.  On the engine for which they were designed, the de Havilland propellers worked well but the Peregrine had different characteristics.

Gloster Meteor (1944-1984).

The end of Peregrine production meant the Whirlwind was a cul-de-sac, the design of the airframe so tied to the characteristics of the engine that thoughts entertained in 1941 of a re-design with Merlin engines were abandoned as the extent of the engineering required became quickly apparent.  It would have been a time-consuming and labor-intensive task and, recovering from the losses incurred in the Battle of Britain, every Merlin-engined Whirlwind would have meant two fewer Spitfires or three fewer Hurricanes.  Westland pursued the idea, later producing a few dozen Welkins which performed well but by then the allies were well-supplied with long-range, high-speed interceptors.  However, the basic concept had proved impressive and the potential was realized in the later de Havilland Hornet (1946), the lineage visible too in the Gloster Meteor, the UK’s first Jet fighter which, having learned lessons from the Whirlwind, used a very different wing shape to lower the landing speed without compromising other aspects of performance.  Although popular with pilots, the Whirlwinds were retired from active service in 1943 before being declared obsolete and scrapped the following year.

Yugoslav Air Force Westland Whirlwind, 1959.

Between 1953-1966 Westland revived the Whirlwind name for a version of the Sikorsky S-55/H-19 Chickasaw, built under license from the US company.  Over four-hundred were produced and they were used by military and civilian operators in a dozen countries.  Although the early versions were underpowered, a switch to turbine engines transformed the Whirlwind and robust, easy to maintain and reliable, it enjoyed a long service with the Royal Navy's Fleet Air Arm as both a carrier-based anti-submarine platform during the High Cold War and latterly in air-sea rescue, the ability to transport six fully-configured stretchers unique in the UK's military inventory.  In Royal Air Force (RAF) service, the last Whirlwinds weren't retired until 1982.