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RESEARCH PAPERS

Low Pressure Ratio Fan Noise Experiment and Theory

[+] Author and Article Information
F. B. Metzger, D. B. Hanson

Acoustics and Noise Control Group, Hamilton Standard, Division of United Aircraft Corporation, Windsor Locks, Conn.

J. Eng. Power 95(1), 19-26 (Jan 01, 1973) (8 pages) doi:10.1115/1.3445689 History: Received December 28, 1971; Online July 14, 2010

Abstract

The Q-FAN™, a new low pressure ratio, low noise propulsor, is currently under intensive development. Since the operating regime of the Q-FAN differs from that of the turbofan, the dominant noise sources also differ. This paper includes a summary of the results of extensive noise tests on a Q-FAN model, a discussion of the sources of various components of measured fan noise, and the results of analytical studies using a new theory to define minimum noise fan configurations.

Copyright © 1973 by ASME
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