Process and device for measuring and adjusting out-of-track dist

Details Process and device for measuring and adjusting out-of-track dist Process and device for measuring and adjusting out-of-track dist

1981-11-03

1984-08-14

Evans, F. L.

Optics: measuring and testing

Motion stopping

73455, G01M 100, G01P 340

Patent

active

044653670

ABSTRACT:
An apparatus and procedure for measuring and regulating the relative vertical displacement of helicopter blades from a rotational plane, comprising a stroboscopic illuminating means, intended to be directed across a reflective tape placed at the extremity of each blade, and a means for controlling the timing of the stroboscopic emissions, whereby the passage of a reflective tape, located at the extremity of each blade, through the line of sight of the lamp, permits a visualization of the relative positions of the different reflecting tapes, the apparatus may be used while on the ground or during flight.

REFERENCES:
patent: 1877713 (1932-09-01), Beck
patent: 2964849 (1960-12-01), Roccati

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