LDV Surveys Over a Fighter Model at Moderate to High Angles of Attack NASA Langley Research Center, Hampton, VA

Format:

Conference/Event

Author/Creator:

Sellers, William L., author.

Conference Name:

Aerospace Technology Conference & Exposition (1988-10-03 : Anaheim, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

881448

Access Restriction:

Restricted for use by site license