Helicopter rotor blades
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 4, 1990
Grant Date -
N/A
app pub date -
Jun 27, 1989
filing date -
Jul 5, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The swept extreme tip edge of a helicopter rotor blade incorporates blade droop to reduce aerodynamic pitching moments caused by spanwise flow encountered in the fore and aft sectors of a rotor rotational disc during forward flight of a helicopter on which the blade is fitted.
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