New York City firm plans early completion of small flight research helicopter which will be employed to test engineering aspects of two projected 10-place twin-engine transport designs, one to use total of 900 hp, and later model with 1200 hp; powered by 175-hp Franklin; top speed 110 mph.
Doman-frazier reveals new 'copter projects
Aviation
Aviation ; 45 , n 7
1946
Aufsatz (Zeitschrift)
Englisch
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