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Interior noise control prediction study for high-speed propeller-driven aircraft
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wilby, J. F. Rennison, D. C. Marsh, A. H. Wilby, E. G. |
| Copyright Year | 1979 |
| Description | An analytical model was developed to predict the noise levels inside propeller-driven aircraft during cruise at M = 0.8. The model was applied to three study aircraft with fuselages of different size (wide body, narrow body and small diameter) in order to determine the noise reductions required to achieve the goal of an A-weighted sound level which does not exceed 80 dB. The model was then used to determine noise control methods which could achieve the required noise reductions. Two classes of noise control treatments were investigated: add-on treatments which can be added to existing structures, and advanced concepts which would require changes to the fuselage primary structure. Only one treatment, a double wall with limp panel, provided the required noise reductions. Weight penalties associated with the treatment were estimated for the three study aircraft. |
| File Size | 11473670 |
| Page Count | 316 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800016609 |
| Archival Resource Key | ark:/13960/t7qp0xs9z |
| Language | English |
| Publisher Date | 1979-09-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Cylindrical Shells Weight Mass Composite Materials Aluminum Noise Reduction Noise Prediction Aircraft Aircraft Compartments Aircraft Design Transmission Loss Prediction Analysis Techniques Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
