System and method for suppression of unwanted noise in ground test facilities

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United States of America Patent

PATENT NO 8939253
SERIAL NO

13871114

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Abstract

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Systems and methods for the suppression of unwanted noise from a jet discharging into a duct are disclosed herein. The unwanted noise may be in the form of excited duct modes or howl due to super resonance. A damper member is used to reduce acoustic velocity perturbations at the velocity anti-node, associated with the half-wave resonance of the duct, weakening the resonance condition and reducing the amplitudes of the spectral peaks.

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Patent Owner(s)

  • UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clem, Michelle M Cleveland, US 3 1
Fagan, Amy F Cleveland, US 6 2
Zaman, Khairul B M Q Strongsville, US 1 0

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