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Further buffeting tests in a cryogenic wind tunnel
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Boyden, R. P. Mabey, D. G. Johnson Jr., W. G. |
| Copyright Year | 1992 |
| Description | Further measurements of buffeting, using wing-root strain gauges, were made in the NASA Langley 0.3 m Cryogenic Wind Tunnel to refine techniques which will be used in larger cryogenic facilities such as the United States National Transonic Facility (NTF) and European Transonic Wind Tunnel (ETW). The questions addressed included the relative importance of variations in frequency parameter and Reynolds number, the choice of model material (considering both stiffness and damping) and the effects of static aeroelastic distortion. The main series of tests was made on half models of slender 65 deg delta wings with a sharp leading edge. The three delta wings had the same planform but widely different bending stiffness and frequencies (obtained by varying both the material and the thickness of the wings). It was known that the flow on this configuration would be insensitive to variations in Reynold number. Additional tests were made on one unswept half-wing of aspect ratio 1.5 with an NPL 9510 aerofoil section, known to be sensitive to variations in Reynolds number at transonic speeds. For brevity the test Mach numbers were restricted to M = 0.21 and 0.35 for the delta wings and to M = 0.30 for the unswept wing. |
| File Size | 2386530 |
| Page Count | 62 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930002422 |
| Archival Resource Key | ark:/13960/t7vm95h8r |
| Language | English |
| Publisher Date | 1992-09-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Damping Wing Roots Transonic Wind Tunnels Reynolds Number Sharp Leading Edges Transonic Speed Distortion Strain Gages Slender Wings Unswept Wings Airfoil Profiles Delta Wings Bending Wind Tunnel Tests Stiffness Aeroelasticity Buffeting Cryogenic Wind Tunnels Mach Number Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
