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Bristol Jupiter Fighter
The Bristol Type 76 Jupiter Fighter and Type 89 Trainer were derivatives of the British fighter of the First World War (the F.2 Fighter), powered by Bristol Jupiter radial engines. While unsuccessful as a fighter, it was used as an advanced trainer aircraft between 1924 and 1933.
==Design and development==
In order to demonstrate their new Jupiter engine in an inexpensive yet relatively high performance aircraft, Bristol Aeroplane Company authorised the conversion of three war surplus F.2 airframes to use the Jupiter, to create the Type 76 Jupiter Fighter, which it was also hoped to sell as a fighter to foreign air forces.〔Mason, Francis K. ''The British Fighter since 1912''. Annapolis, Maryland: Naval Institute Press, 1992. ISBN 1-55750-082-7.〕
The first of these three aircraft flew in June 1923. While the engine installation proved satisfactory, as the Type 76 had the same fuel capacity as the F.2, the increased fuel consumption of the Jupiter compared with the F.2's original Rolls-Royce Falcon meant that the aircraft had inadequate range for use as a fighter, while the slipsteam over the observer's cockpit meant that the observer could not use his .303 in (7.7 mm) Lewis Gun.〔 Because of these flaws, no more type 76s were built after the initial three.
While unsuitable as a fighter, the success of the engine installation of the Jupiter Fighter resulted in the decision to produce an advanced trainer version, to supplement the Siddeley Puma-engined Bristol Tourers already in use in this role. The result of this combination was the Type 89 Trainer, a total of 23 of which were produced.〔Barnes, C.H. ''Bristol Aircraft Since 1910''. London: Putnam, First edition, 1964.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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