Essential and Dispensible WW2 aircraft.

On Wed, 03 Oct 2007 08:31:19 -0700, "Scott M. Kozel"
wrote:

The critical improvement to the Mustang was the fitting of the RR Merlin engine
which was an RAF idea.

Given that over 15,000 P-51s were built by North American Aviation in
the U.S. and paid for by the U.S. government, it was predominently a
U.S. aircraft. Like you said, the later models did use the Merlin
engine.

The critical point is that the P-51 would not have been sustained in
production without the RAF championing the type on the basis of the
Merlin installation in mid-1942. It was never a part of USAAF
procurement until October 1942, and it took substantive British
efforts to get the USAAF to accept it as a major production type.

So it's certainly a US aircraft, but it wouldn't have existed without
substantial British input both in technological terms, and production
advocacy from the initial Allison-engined British purchase contracts
to the Merlin conversion.

Gavin Bailey



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