DISSIPATIVE ACOUSTIC SOURCES FOR INTERIOR NOISE CONTROL OF PAYLOAD FAIRINGS

Sponsor: Air Force Research Lab / Dynamic Structures and Materials, LLC

Duration: 4/1/99-12/31/99

Collaborators: Dr. Robert L. Clark, Jr. - Duke University

Page Last Updated: 1/7/01

Objective:
Demonstrate the use of acoustic feedback for the control of low-frequency noise (<300 Hz) in a Minotaur-class payload fairing. Results:

Demonstrated acoustic feedback using a multi-source array on a composite fairing testbed housed at Duke University.
Scaled the results to a realistic launch environment (130 dB - 140 dB) to determine power and weight requirements.