Some low-speed wind-tunnel techniques for the measurement of oscillatory aerodynamic derivatives on jet-blowing models
Abstract
A description is given of a rig developed to measure directly the damping in yaw on a jet-flap blowing model, using a decaying oscillation technique with the model supported on an internal air bearing. Solutions to some of the problems encountered in the rig design and in the model testing are discussed, and the importance of the flow-field associated with the proximity of the jet efflux to the fuselage is illustrated. Finally, a new inexorable-forcing external-support rig is described, which is currently being developed for measurements of both direct and cross-derivatives, due to yawing, on jet-blowing models.
- Publication:
-
Journal of Sound Vibration
- Pub Date:
- November 1966
- DOI:
- 10.1016/0022-460X(66)90141-6
- Bibcode:
- 1966JSV.....4..507O