Acoustic Phasing, Directionality and Amplification Effects of Helicopter Blade-Vortex Interactions

Author： Schmitz Fredric H.   Sim Ben Wel-C.  

Publisher： AHS International

ISSN： 2161-6027

Source： Journal of the American Helicopter Society, Vol.46, Iss.4, 2001-10, pp. : 273-282

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