Anti-sound arrangement for multi-stage blade cascade

Details Anti-sound arrangement for multi-stage blade cascade Anti-sound arrangement for multi-stage blade cascade

1993-10-22

1995-05-30

Dang, Khanh

Acoustics

Sound-modifying means

By wave interference

F01N 106

Patent

active

054203830

ABSTRACT:
An arrangement for cancelling unwanted noise generated by sequential blade rows (16, 18) in a gas turbine engine (10) includes a plurality of acoustic sources (52) disposed on the blades (36-42) of the downstream row (18).

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Unpublished report entitled "Active Control of Wake/Blade-Row Interaction Noise" by Kenneth A. Kousen and Joseph M. Verdon, United:Technologies Research Center, East Harford, CT prepared for Lewis Research Center under Contract NAS3-25425.

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