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Experimental and analytical results of tangential blowing applied to a subsonic v/stol inlet
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Experimental investigation of tangential blowing applied to a subsonic v/stol inlet
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Comparison of experimental and theoretical boundary-layer separation for inlets at incidence angle at low-speed conditions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Albers, J. A. Felderman, E. J. |
| Copyright Year | 1975 |
| Description | Comparisons between experimental and theoretical Mach number distributions and separation locations are presented for the internal surfaces of four different subsonic inlet geometries with exit diameters of 13.97 centimeters. The free stream Mach number was held constant at 0.127, the one-dimensional throat Mach number ranged from 0.49 to 0.71, and the incidence angle ranged from 0 deg to 50 deg. Generally good agreement was found between the theoretical and experimental surface Mach number distributions as long as no flow separation existed. At high incidence angles, where separation was obvious in the experimental data, the theory predicted separation on the lip. At lower incidence angles, the theoretical results indicated diffuser separation which was not obvious from the experimental surface Mach number distributions. As incidence angle was varied from 0 deg to 50 deg, the predicted separation location shifted from the diffuser region to the inlet highlight. Relatively small total pressure losses were obtained when the predicted separation location was greater than 0.6 of the distance between the highlight and the diffuser exit. |
| File Size | 808350 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750008437 |
| Archival Resource Key | ark:/13960/t4tj38x9r |
| Language | English |
| Publisher Date | 1975-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Boundary Layer Separation Subsonic Flow Engine Inlets Inlet Flow Diffusers Incidence Boundary Layer Flow Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
