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Flap noise prediction method for a powered lift system
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Clark, B. Dorsch, R. G. Reshotko, M. |
| Copyright Year | 1973 |
| Description | A method is presented for estimating the noise generated by deflection of the engine exhaust for under-the-wing and over-the-wing versions of an externally blown flap configuration for powered lift. Correlation equations and curves are given for the overall sound pressure level and directivity and for spectra scaled to a high bypass 25,000-pound thrust size engine. Data are taken from TF34 engine tests and from large cold flow model tests. The correlations are empirical, and thus application of this prediction procedure is limited to geometrically similar configurations. Application of the method is illustrated by calculated sample footprints. |
| File Size | 651918 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730024236 |
| Archival Resource Key | ark:/13960/t9g49g71t |
| Language | English |
| Publisher Date | 1973-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Externally Blown Flaps Sound Waves Sound Propagation Acoustic Measurement Acoustic Properties Aerodynamic Configurations Aerodynamic Noise Prediction Analysis Techniques Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
