Device for applying imbalance to a rotor

Details Device for applying imbalance to a rotor Device for applying imbalance to a rotor

1983-11-16

1985-05-21

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73458, 73468, G01M 100

Patent

active

045178224

ABSTRACT:
A device for applying imbalance to a rotor comprises a plurality of chambers disposed symmetrically around the rotor. Each has an opening and is adapted to contain a fluid. Each of a plurality of opening devices associated with the chambers is operable under remote control so as to open the opening of the associated chamber, so that the fluid contained in it may be evacuated from it. Each opening device comprises a pyrotechnic valve incorporating a piston rigidly attached to an assembly and movable from a first position in which the assembly closes the opening of the associated chamber to a second position in which the assembly opens the opening. Such movement is obtained in response to firing of the pyrotechnic valve. The opening device also includes a control circuit which incorporates a receiver responsive to a signal transmitted from a fixed source with no material transmission medium. This control circuit fires the pyrotechnic valve. In this way, imbalance can be applied in an instantaneous manner, so that the coefficients of influence can be accurately and reliably measured.

REFERENCES:
patent: 2963914 (1960-12-01), Dupouy
patent: 3812724 (1974-05-01), Curtz
patent: 4295387 (1981-10-01), Zhivotov
patent: 4348885 (1982-09-01), Mueller

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