Dynamic Behavior of Angle-of-Attack Vane Assemblies.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING
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A relatively simple analytic model was developed for predicting the dynamic behavior of angle-of-attack vane assemblies in response to changes in the free stream direction andor to transverse motions of the vanes pivot axis. Experimental tests of a typical vane were performed in five-foot, low subsonic wind tunnel. Comparisons were made of the models predictions with these tests and with other test results found in the literature. Viscous and tip effects were not included in the model. Viscous and tip effects were not included in the model. The aerodynamic damping was experimentally found to be essentially independent of airspeed as predicted, but the models estimates were only within a factor of 2 to 3 of the data. It was found that typical aircraft instrumentation boom motions may lead to significant errors in the apparent angle of attack.
- Test Facilities, Equipment and Methods
- Fluid Mechanics