|Aircraft :: DH9|
Updated: 25 Sep 06
Full Official Name: DH9
As a bomber, the DH 9 was criticised for its inadequate Puma engine. The minimum safe height to cross the front line in 1918 was considered to be 12,000ft and, with a heavy bomb load, this meant a very long and cold climb with the possibility of engine trouble. Attempts were made to improve the performance of the Puma engines by enlarging the carburettor air intake pipes and altering the mixture controls. These made a slight improvement but overall the DH 9 was still thought of as unreliable.
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