Method and apparatus for measuring moments acting upon an object

Details Method and apparatus for measuring moments acting upon an object Method and apparatus for measuring moments acting upon an object

1986-02-26

1987-05-05

Woodiel, Donald O.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

7386204, G01M 900

Patent

active

046622179

ABSTRACT:
A method and apparatus for measuring at least one moment acting about a predetermined axis on an object under investigation. A force component acting at a first force introduction point onto said object under investigation perpendicular to a normal from said first introduction point to said axis is measured. Then a differential moment caused by displacement of said object between said first force introduction point to a present second force introduction point is determined and said displacement is calculated by dividing said differential moment by said measured force component. A predetermined distance between said first force introduction point is corrected by said displacement and finally said measured force component is multiplied by said corrected distance in order to gain an accurate value for the moment to be measured.

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

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