Dewoitine D.523

The D.523 was a variant on the basic Dewoitine D.520 that used the Hispano-Suiza 12Y51 engine, giving 1,000 hp. This was the engine that was to be used in the D.551, and the D.523 was produced by SNCAM to test the engine. It was produced by fitting the new engine to D.520 No.45, and was tested between 9 May and 14 June 1940. Performance figures were not recorded, and after the tests the aircraft was restored to the D.520 standard.

link to review of French Fighters of WWIIFrench Fighters of World War II, Alain Pelletier. This book tells the story of the French fighter aircraft that attempted to stand up the Luftwaffe in 1940. It covers seven main aircraft and a larger number of minor variants. Each aircraft is taken from development and prototypes through the battle of France and into the period after the armistice. [see more]
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How to cite this article: Rickard, J (20 April 2007), Dewoitine D.523,

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