Reduction of helicopter blade-vortex interaction noise by active rotor control technology
By: Yung H. Yu ... [et al.].
Contributors: Yu, Yung H.; United States. National Aeronautics and Space Administration.
Series: NASA/TM -- 207568.; NASA technical memorandum -- 207568.
Publisher: National Aeronautics and Space Administration; National Technical Information Service, distributor
Published: 1997
Place of publication: [Washington, D.C; Springfield, Va
Language: eng
Format: Microform
Subjects: Active control.; Blade-vortex interaction.; Control systems design.; Smart structures.; Structural design.; Helicopters.; Aircraft noise.; Harmonic control.
Other titles: Reduction of helicopter blade vortex interaction noise by active rotor control technology.
Notes: Shipping list no.: 99-0199-M.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1998] 1 microfiche.