Accession Number:

AD0759605

Title:

A Device for Measuring Low Damping Moments When Testing Models in Wind Tunnels,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1973-04-11

Pagination or Media Count:

7.0

Abstract:

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.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE