Talk:Bristol Jupiter

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Bristol Mid‑importance

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Bristol Draco edit

Latest comment: 7 years ago2 comments2 people in discussion

...was a fuel injected Jupiter? 2001:56A:F414:D300:7CC3:52AF:2847:F558 (talk) 00:36, 29 June 2016 (UTC)Reply

No, a fuel-injected Pegasus. Direct fuel injection too, not a pressure carburettor. Development started in 1931 with a single cylinder test engine, the Draco in 1932 and flying by 1933 in a Wapiti but was abandoned by 1934. The problem was that the fuel injection pumps were provided by Lucas and CAV, not Bristol, and were outside Fedden's direct control. They were basically the pump design from the earlier diesel Phoenix, also based on the Pegasus. Although he was insistent that the advantages of injection would be essential there was little support from the Air Ministry and Lucas couldn't be pressured to put the needed effort into pump development.

See Gunston, Bill (1998). Fedden – the life of Sir Roy Fedden. RRHT. pp. 142–143. ISBN 1-872922-13-9. Historical Series, Nº26.

Andy Dingley (talk) 00:47, 30 June 2016 (UTC)Reply

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