Airfoil surface impedance modification for noise reduction...

Details Airfoil surface impedance modification for noise reduction... Airfoil surface impedance modification for noise reduction...

2006-03-28

2006-03-28

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

C416S233000, C416S500000

Reexamination Certificate

active

07018172

ABSTRACT:
In accordance with the present invention, an aircraft engine is provided with a component which helps reduce the noise generated by the engine. The component has a first aerodynamic surface, a second aerodynamic surface, and a system for reducing noise without altering a pressure differential between the first aerodynamic surface and the second aerodynamic surface.

REFERENCES:
patent: 3820628 (1974-06-01), Hanson
patent: 6004095 (1999-12-01), Waitz et al.
patent: 6139259 (2000-10-01), Ho et al.

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