Wind Tunnel Test Considerations Unique to V/STOL Aircraft
Author : Ernest L. Black
Publisher :
Page : 6 pages
File Size : 16,83 MB
Release : 1968
Category : Short take-off and landing aircraft
ISBN :
Author : Ernest L. Black
Publisher :
Page : 6 pages
File Size : 16,83 MB
Release : 1968
Category : Short take-off and landing aircraft
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Author : Harry H. Heyson
Publisher :
Page : 340 pages
File Size : 49,63 MB
Release : 1970
Category : Short take-off and landing aircraft
ISBN :
Under sufficiently large wake deflections, the forward portion of the wake is found to flow forward along the floor leading to a vortex pattern which results in Rae's limits (Journal of Aircraft, May-June 1967). Although wind-tunnel data cannot normally be corrected successfully beyond these limits, it may be possible to obtain ground-effect data for conditions more severe than those implied by Rae.
Author :
Publisher :
Page : 86 pages
File Size : 40,20 MB
Release : 1978
Category :
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Author :
Publisher :
Page : 78 pages
File Size : 32,8 MB
Release : 1984
Category :
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Author : Richard A. Kroeger
Publisher :
Page : 103 pages
File Size : 32,37 MB
Release : 1972
Category :
ISBN :
Wind tunnels have afforded the best potential for studying regions of aerodynamic uniqueness of V/STOL aircraft, but they have been of limited value because of the magnitude of the flow interference they introduce. A new wind tunnel concept is described for covering the spectrum of transition testing from hover throughout wing sustained flight. The wall interference corrections are physically produced by the structure of the wall. A small scale tunnel was designed, constructed, and tested employing this concept. Data from a small rotor model were obtained in the new tunnel and a large conventional one as a basis for comparative evaluation. (Author).
Author :
Publisher :
Page : 174 pages
File Size : 38,82 MB
Release : 1969
Category : Rotors (Helicopters)
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Author : Cornell Aeronautical Laboratory
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Page : pages
File Size : 18,92 MB
Release : 1969
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Author :
Publisher :
Page : 1368 pages
File Size : 14,26 MB
Release : 1983
Category : Aeronautics
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Author : V. Robert Page
Publisher :
Page : 58 pages
File Size : 12,21 MB
Release : 1968
Category : Propeller-driven aircraft
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Author : William H Rae (Jr)
Publisher :
Page : 37 pages
File Size : 40,86 MB
Release : 1973
Category :
ISBN :
The report deals with an experimental investigation of some of the problems associated with wind tunnel testing of V/STOL type aircraft. The models used in the study were either rotors or propellers acting as a rotor. Various size and shape wind tunnel test sections were simulated by the use of inserts installed within a larger main wind tunnel test section. The study investigated the application of wind tunnel wall corrections to models with large values of downwash. A physical limit, called flow breakdown, to the size and allowable downwash for a given model-tunnel combination was also studied. (Modified author abstract).