Letters From Our Readers, Oct. 25, 2021

De Havilland Canada aircraft
Credit: Pratt & Whitney
THE AGE OF THE TURBOPROP With reference to Guy Norris’ “Engine Manufacturers Explore Paths for Future Turboprop Applications” (Sept. 27-Oct. 10, p. 66) , I would suggest that the age of the turboprop was ushered in not in the late 1940s but rather by the pioneering first flight on Sept. 20, 1945, of...

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