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Vibro-Acoustics and the Application of Statistical Energy Analysis
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English
Abstract
Concern over the vibroacoustic environment within manned space platforms has been raised by astronauts on recent Spacelab missions. As a result, hardware being designed for the International Space Station is being subjected to stricter acoustic requirements and waivers allowing noise levels above the specified levels will be extremely difficult to obtain.
The Space Station Biological Research Project (SSBRP) is developing Life Sciences hardware for the Space Station and is sensitive to the need for well defined requirements and allocations for acoustic noise. Statistical Energy Analysis (SEA) is being used to develop acoustic models of the main system hardware including sources, transmission paths and dissipation paths to ensure that acoustic requirements and allocations are adequate and consistent with hardware capabilities.
Preliminary SEA models have been developed to predict the noise levels within the working volume of the Centrifuge Accommodation Module on Space Station. Requirements for the systems within the module can be allocated based on these predictions.
As the hardware designs mature, these preliminary models will be modified as applicable to ensure that the designs incorporate any needed noise abatement techniques. The modeling technique used can also be used to predict the effect of these noise abatement techniques.
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Citation
Dyble, S., "Vibro-Acoustics and the Application of Statistical Energy Analysis," SAE Technical Paper 951646, 1995, https://doi.org/10.4271/951646.Also In
References
- NASA “Spacelab/Payloads Acoustics Working Group Final Report” Office of Science and Applications NASA Headquarters Washington DC 1992
- NASA “ International Space Station Flight Crew Integration Standard (NASA-STD-3000/T) Space Station Program Office Johnson Space Center, Houston TX June 1994
- Vibro-Acoustic Sciences Ltd “AutoSEA Theory and Quality Assurance Manual” Vibro-Acoustic Sciences Ltd., Level 5 15 Orion Road, Lane Cove, N.S.W. Australia. 2066 1991
- Haberman Robert C Bremner Paul “SEA Design For Noise and Vibration” Applied Technology Institute 12960 Linden Church Road, Clarks ville Maryland 21029 1994