A Device for Measuring Low Damping Moments When Testing Models in Wind Tunnels,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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Unites are known for the measurement of low damping moments when testing models in wind tunnels and which are made in the form of a flat four-link mechanism which assigns the angular oscillations of the model being tested due to the kinetic energy stored by a flywheel. However, the sensitivity of such devices is insufficient. In the described device, to increase the sensitivity by means of a reduction in the natural dissipative forces the joints of the four-link mechanism are made in the form of two ball bearings arranged one inside the other whose outer race of the smaller ball bearing is put into rotation by a separate electric motor.
- Test Facilities, Equipment and Methods