Brief comment on Spitfire now powered with Rolls Royce Merlin 61 instead of Merlin 45 or 46; 4-blade propeller provides greater blade area necessary to absorb power output of new engine.
Improved spitfire
Flight
Flight ; 42 , n 1769
1942
Article (Journal)
English
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Online Contents | 2002
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Engineering Index Backfile | 1945