Method and apparatus for determining moments acting upon an obje

Details Method and apparatus for determining moments acting upon an obje Method and apparatus for determining moments acting upon an obje

1988-05-06

1989-07-04

Levy, Stewart J.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

7386204, G01M 900

Patent

active

048438731

ABSTRACT:
A method and an apparatus for determining at least one moment acting about a predetermined axis of an object placed on a force measuring apparatus in a flowing medium. In order to compensate measurement errors caused by a displacement of the center of gravity of the object upon application of the flowing medium exactly defined variable forces are applied to the object prior to the application of the flowing medium. The displacement of the center of gravity of the object is determined in dependence on the force variation and then taken into consideration when evaluating the force and moment measurements.

REFERENCES:
patent: 3780573 (1973-12-01), Reus
patent: 4073188 (1978-02-01), Slezinger et al.
patent: 4522074 (1985-06-01), Hafner
patent: 4662217 (1987-05-01), Hafner

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