'Blade-fixed' atmospheric turbulence encountered by a helicopter substantially differs from body-fixed (i.e., fuselage) turbulence, because the rotational velocity moves the blade station fore and aft through the turbulence. The present closed-form solution of a frequency-time spectrum for the dominant vertical turbulence velocity at arbitrary blade station defines in what way and in what degree the rotational velocity affects rotor-disk turbulence frequency and temporal characteristics. Blade-flapping response to blade- and body-fixed turbulence is also presented over a range of turbulence-scale length and advance ratio.
Adequacy of modeling turbulence and related effects on helicopter response
AIAA Journal ; 30 , 6 Ju
01.06.1992
Sonstige
Keine Angabe
Englisch
Helicopter response to atmospheric turbulence in forward flight
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