Free flight model tests of X-18 research aircraft showed that propeller driven tilt wing configuration is feasible and practical; unique versatility provided by its ability to take off conventionally, fly at high forward speed and hover or land vertically when desired radius of action has been reached.
Hiller X-18 design study
Am Helicopter
American Helicopter ; 49 , n 1
1957
Aufsatz (Zeitschrift)
Englisch
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Online Contents | 1994
Engineering Index Backfile | 1964
United helicopter's "hiller 360,"
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|Engineering Index Backfile | 1960
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