The Short Springbok was a two-seat, all-metal reconnaissance

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While ...

produced for the

British British may refer to: Peoples, culture, and language * British people, nationals or natives of the United Kingdom, British Overseas Territories, and Crown Dependencies. ** Britishness, the British identity and common culture * British English ...

Air Ministry The Air Ministry was a department of the Government of the United Kingdom with the responsibility of managing the affairs of the Royal Air Force, that existed from 1918 to 1964. It was under the political authority of the Secretary of State ...

in the 1920s. All together six aircraft of the Springbok design were built but none entered service with the armed forces.

Design

The Springbok

fuselage The fuselage (; from the French ''fuselé'' "spindle-shaped") is an aircraft's main body section. It holds crew, passengers, or cargo. In single-engine aircraft, it will usually contain an engine as well, although in some amphibious aircraft t ...

was of streamlined

monocoque Monocoque ( ), also called structural skin, is a structural system in which loads are supported by an object's external skin, in a manner similar to an egg shell. The word ''monocoque'' is a French term for "single shell". First used for boats, ...

construction mounted onto the lower wing and almost filling the gap between the upper and lower wings. The wings were single-bay, of unequal span and unequal chord, constructed of steel spars with an

aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It h ...

(S.3/3a Springbok) / fabric covering (S.3b Chamois). The

aileron An aileron (French for "little wing" or "fin") is a hinged flight control surface usually forming part of the trailing edge of each wing of a fixed-wing aircraft. Ailerons are used in pairs to control the aircraft in roll (or movement arou ...

s were on the upper wing only. The crew of two sat in tandem open cockpits, with a cutout in the upper mainplane for the pilot's head; the observer/gunner sat behind the pilot, just behind the upper wing. The tail unit comprised a braced monoplane tail near the fuselage top with a single fin and rudder. The undercarriage was of the cross-axle type, situated under the nose and complemented by a tailskid at the rear.

History

The Springbok traces its history from the pioneering, all-metal

Short Silver Streak The Short Silver Streak was the first British all-metal aircraft.Jackson 1973, p. 297. It was designed and built by Short Brothers at Rochester, Kent, England. Although ''Flight'' magazine claimed that it was the first instance of stressed ski ...

, which was exhibited at the

Olympia Aero Show The name Olympia may refer to: Arts and entertainment Film * ''Olympia'' (1938 film), by Leni Riefenstahl, documenting the Berlin-hosted Olympic Games * ''Olympia'' (1998 film), about a Mexican soap opera star who pursues a career as an athlet ...

in 1920. The Air Ministry had purchased the Silver Streak and subjected it to structural tests for two years at R.A.E., Farnborough. When in due course the Air Ministry issued a " Bristol Fighter-replacement" Specification 19/21,

Short Brothers Short Brothers plc, usually referred to as Shorts or Short, is an aerospace company based in Belfast, Northern Ireland. Shorts was founded in 1908 in London, and was the first company in the world to make production aeroplanes. It was particu ...

contracted to deliver two S.3 Springbok I two-seat reconnaissance biplanes (''J6974'' and ''J6975''). On 30 November 1923, the second of the two prototypes, ''J6975'', crashed near

Martlesham Martlesham is a village in Suffolk, England about two miles (3 km) South-West of Woodbridge and East of Ipswich. It is often referred to as "old Martlesham" by locals in order to distinguish this old village from the much more recent Mart ...

when it spun in shortly after takeoff, killing the pilot. The cause was diagnosed as rudder blanking during spinning and a new wing design was prepared for the Springbok Mk. II, of which six examples – later reduced to three – were ordered in 1924. Powered by a 400 hp

Bristol Jupiter The Bristol Jupiter was a British nine-cylinder single-row piston radial engine built by the Bristol Aeroplane Company. Originally designed late in World War I and known as the Cosmos Jupiter, a lengthy series of upgrades and developments tur ...

radial engine The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is ...

, the S.3 Springbok I was an all-metal aircraft, with a

duralumin Duralumin (also called duraluminum, duraluminium, duralum, dural(l)ium, or dural) is a trade name for one of the earliest types of age-hardenable aluminium alloys. The term is a combination of ''Dürener'' and ''aluminium''. Its use as a tra ...

monocoque fuselage and two-bay, equal-span wings. The strength/weight factor of the mainplanes was disappointing and the Air Ministry ordered three more Springboks with lighter, fabric-covered wings attached directly to the lower fuselage and a redesigned tail assembly. The first of these S.3a Springbok IIs (numbered ''J7925''-''J7927'') was flown by Shorts' Chief

Test Pilot A test pilot is an aircraft pilot with additional training to fly and evaluate experimental, newly produced and modified aircraft with specific maneuvers, known as flight test techniques.Stinton, Darrol. ''Flying Qualities and Flight Testin ...

J. Lankester Parker at the

Isle of Grain Isle of Grain (Old English ''Greon'', meaning gravel) is a village and the easternmost point of the Hoo Peninsula within the district of Medway in Kent, south-east England. No longer an island and now forming part of the peninsula, the area ...

on 25 March 1925. SSpringbok

The S.3b Chamois was produced in response to Specification 30/24 (as was the

Vickers Vespa The Vickers Vespa was a British army cooperation biplane designed and built by Vickers Limited in the 1920s. While not adopted by Britain's Royal Air Force, small numbers were bought by the Irish Free State and Bolivia, the latter of which used ...

). The airframe of the first Springbok II (J7295) was adapted to take the more powerful 450 hp Jupiter VI. Its first flight took place at

Lympne Aerodrome Lympne Airport , was a military and later civil airfield , at Lympne, Kent, United Kingdom, which operated from 1916 to 1984. During the First World War RFC Lympne was originally an acceptance point for aircraft being delivered to, and returni ...

on 14 March 1927, also flown by Lankester Parker. SChamois

The tests, from 27 April 1927 by Aeroplane and Armament Experimental Establishment (A&AEE), then at Martlesham Heath, determined that its performance was disappointing and the only prototype was scrapped.

Operators

; * Aeroplane and Armament Experimental Establishment (A&AEE)

Specifications (Springbok I)

References

* *

External links