Loading...
Please wait, while we are loading the content...
Similar Documents
Ldv surveys over a fighter model at moderate to high angles of attack
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sellers II, William L. Hepner, Timothy E. Meyers, James F. |
| Copyright Year | 2004 |
| Description | The vortex flowfield over an advanced twin-tailed fighter configuration was measured in a low-speed wind tunnel at two angles of attack. The primary test data consisted of 3-component velocity surveys obtained using a Laser Doppler Velocimeter. Laser light sheet and surface flow visualization were also obtained to provide insight into the flowfield structure. Time-averaged velocities and the root mean square of the velocity fluctuations were obtained at two cross-sections above the model. At 15 degrees angle of attack, the vortices generated by the wing leading edge extension (LEX) were unburst over the model and passed outboard of the vertical tail. At 25 degrees angle of attack, the vortices burst in the vicinity of the wing-LEX intersection and impact directly on the vertical tails. The RMS levels of the velocity fluctuations reach values of approximately 30% in the region of the vertical tails. |
| File Size | 11451799 |
| Page Count | 27 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040161542 |
| Archival Resource Key | ark:/13960/t9n34t915 |
| Language | English |
| Publisher Date | 2004-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Laser Doppler Velocimeters Vortices Wind Tunnel Tests Flow Visualization Flow Velocity Wind Tunnel Models Low Speed Wind Tunnels Angle of Attack Fighter Aircraft Leading Edges Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
