Acoustic measurements in a jet engine test facility
The US Air Force has had problems with aircraft engine noise generated during ground run-up. These operations have resulted in many community complaints and serious restrictions being placed on ground run-up activity which affected training and fleet readiness. A program of noise abatement was undertaken to suppress ground run-up noise. The original designs included water-cooled noise suppressors which were peculiar to a single aircraft. This made each usable only with the aircraft for which it was designed. Noise surveys indicated that the close-coupled suppressor did not address the problem of noise radiated from unenclosed portions of the fuselage. To alleviate this situation, the approach adopted was to use a complete aircraft enclosure, called a hush house, and a large augmenter tube which is totally air-cooled.
- Research Organization:
- Flight Dynamics Lab., Wright-Patterson Air Force Base, OH
- OSTI ID:
- 5912737
- Journal Information:
- Proc. - Int. Conf. Noise Control Eng.; (United States), Vol. 2
- Country of Publication:
- United States
- Language:
- English
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