helicopter blade aerofoil
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United States of America Patent
Stats
-
Sep 28, 1999
Grant Date -
N/A
app pub date -
Oct 17, 1997
filing date -
Mar 8, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a helicopter blade aerofoil, upper and lower surfaces thereof are defined by the following coordinates, and the leading edge profile of the aerofoil is defined by the following leading edge radius and center of circle. Thus drag divergence Mach number Mdd and maximum lift coefficient Clmax can be increased and the level of noise can be reduced.
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Cited Art Landscape
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