Fluctuating pressures on fan blades of a turbofan engine : Static and wind-tunnel investigations

Author:: Schoenster, J. A.
Published:: Mar 1, 1982.
Physical Description:: 1 electronic document

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Summary:

To investigate the fan noise generated from turbofan engines, miniature pressure transducers were used to measure the fluctuating pressure on the fan blades of a JT15D engine. Tests were conducted with the engine operating on an outdoor test stand and in a wind tunnel. It was found that a potential flow interaction between the fan blades and six, large support struts in the bypass duct is a dominant noise source in the JT15D engine. Effects of varying fan speed and the forward speed on the blade pressure are also presented.

Other Subject(s):

ACOUSTICS

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 19820013163.
Accession ID: 82N21037.
NAS 1.60:1976.
NASA-TP-1976.
L-14913.

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