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Blackburn Sprat

Sprat
BlSprat.jpg
Role advanced trainer
National origin United Kingdom
Manufacturer Blackburn Aeroplane and Motor Co. Ltd
Designer F.A Bumpas
First flight 24 April 1926
Number built 1

The Blackburn T.R.1 Sprat was a British single-engine two-seat biplane trainer, built in 1926 for advanced training, deck-landing and seaplane experience. Just one was built.

The Sprat was designed to Air Ministry Specification 5/24 for an RAF advanced trainer and Fleet Air Arm deck-landing trainer. It was specified that the aircraft should be readily convertible to a seaplane, again to be used as a trainer. The specification produced contracts for three machines, the Vickers Vendace, the Parnall Perch and the Sprat.

The Sprat, though a smaller aircraft, had strong family resemblances to the earlier Velos torpedo bomber. The Sprat was a staggered, single-bay biplane with equal-span wings that could be folded for carrier stowage. The fuselage centre section was built around a tubular-steel structure which linked the engine mounting and the wooded-framed rear fuselage. The two dual-control open cockpits were both behind the trailing edge of the wing for optimum visibility. Unusually, the instruments were placed on the rear spar of the upper wing centre section, where they could be read from both cockpits. The rudder area was large compared to that of the fin and a braced tailplane was placed on top of the rear fuselage.

The main undercarriage was a robust split-axle construction with the legs joining the wings at the bottom of the X-form centre-section struts. Braced stub axles carried the arrester claws required by the longitudinal arrester wires of Royal Navy aircraft carriers up to 1926. The undercarriage assembly was designed so that it could be easily removed with the aircraft on trestles, and replaced with a pair of aluminium single-step, V-bottomed round-topped floats. These carried water rudders for manoeuvring afloat.


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