Vibrational impacts of hush house operation
United States Air Force (USAF) facilities are required to test turboprop and turbojet engines before or after maintenance or repair and prior to installation on aircraft to ensure that no problems were introduced or remain uncorrected. This requirement prevents the installation of engines in aircraft which require further maintenance. There are a number of facilities in use by USAF for conducting engine diagnostic tests. The most modern of these facilities is the hush house which is a hangar-like structure designed to isolate the noise associated with extended engine operations from the surrounding environment. One type of hush house, the T-10, is of particular concern because of vibrational impacts to surrounding structures induced by subaudible sound (infrasound) emitted during operation. While these facilities fulfill the design requirement of reducing audible noise, serious siting problems have been reported at several installations because of infrasound-induced vibrations. The worst of these include the abandonment of an avionics laboratory because induced vibrations interfered with this facilities function and structural damage to a concrete block maintenance facility. This paper describes a predictive method for assessing vibration-driven structural impacts. 9 refs., 2 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA). Energy Div.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7147820
- Report Number(s):
- CONF-880741-2; ON: DE88006983
- Resource Relation:
- Conference: Joint CSCE-ASCE conference on environmental engineering, Vancouver, Canada, 13 Jul 1988
- Country of Publication:
- United States
- Language:
- English
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