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A theory for predicting the rotational and vortex noise of lifting rotors in hover and forward flight / by S. Gene Sadler and Robert G. Loewy.

Theory for predicting rotational and vortex noise of lifting rotors in hovering and forward flight.

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Bibliographic Details
Main Author:	Sadler, S. Gene
Corporate Authors:	Langley Research Center, Applied Science Associates, United States. National Aeronautics and Space Administration
Other Authors:	Loewy, Robert G.
Format:	Government Document Book
Language:	English
Published:	Washington, D.C. : Springfield, Va. : National Aeronautics and Space Administration ; For sale by the Clearinghouse for Federal Scientific and Technical Information [distributor], 1969.
Series:	NASA contractor report ; NASA CR-1333.
Subjects:	Rotors (Helicopters) > Noise. Lifting bodies (Aeronautics) > Noise. Vortex-motion > Noise. Aircraft noise. Helicopters. Hovering. Lifting rotors. Predictions. Flight tests. Low frequencies. Rotating bodies. Theorem proving. Vortices.

Description
Summary:	Theory for predicting rotational and vortex noise of lifting rotors in hovering and forward flight.
Item Description:	"May 1969"--Cover. "Issued by Originator as RASA Report Number 68-11."
Physical Description:	iii, 73 pages : illustrations ; 27 cm.
Bibliography:	Includes bibliographical references (pages 46-47)
Funding Information Note:	Prepared by Rochester Applied Science Associates, Inc., Rochester, N.Y. for Langley Research Center