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The Bristol Type 91 Brownie was a light sports aircraft produced in the United Kingdom by the Bristol Aeroplane Company in 1924. It was a low-wing cantilever monoplane aircraft of conventional configuration with fixed tailskid undercarriage. The pilot and passenger sat in tandem open cockpits. It won the £1,000 pound prize for second place at the Lympne light aircraft trials in October 1924. ==Design== Bristol had not built an aircraft to compete in the 1923 Lympne light aircraft trials, which had been for aircraft with engines of 750 cc or less, making use of Bristol's Cherub engine impossible. The rules were changed for the 1924 trials, permitting engines of up to 1,100 cc to be used, and accordingly Frank Barnwell started design work on a competitor early in 1924. He produced studies for alternative wood and metal aircraft, and after consideration of these the Board of Bristol Aircraft authorised the production of two aircraft on 4 February, adding a third on 5 May. All three aircraft had a similar fuselage, made of wire-braced high-tensile steel tubing, but for experimental purposes three different wing designs were produced: a 34 ft 7in (10.54m) span wooden wing and two different metal wings, one 36 ft 7 in (11.15 m) span and all-steel, the other, intended for high speed use, of 30 ft 7 in (9.32 m) span with combined steel and duralumin construction. To satisfy the rules of the competition the wings had to be readily detachable and the aircraft fitted with dual controls. The three aircraft were registered G-EBJK, G-EBJL and G-EBJM on 14 July, and immediately named ''Jack'', ''Jill'' and ''Jim''. G-EBJK, fitted with the wooden wings, was the first flown, on 6 Aug piloted by Cyril Uwins. It performed and handled so well that a second flight was immediately made by Frank Barnwell, followed by a third by Uwins and Barnwell together. G-EBJL, which had the large metal wings fitted, first flew on 22 September and G-EBJM,completed as a single seater with a long-range tank and the smaller metal wings followed on 4 September. All took part in the trials, which took place between 27 September and 4 October. Uwins, flying 'JK, winning second prize in the main trials. 'JL, to be flown by T.W. Campbell, was withdrawn because of aileron flutter, and Campbell in 'JM won third place in the Grosvenor Cup race, averaging over 70 mph. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Bristol Brownie」の詳細全文を読む スポンサード リンク
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