Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1990-09-19
1992-06-02
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
33288, G01B 1126, G01C 100
Patent
active
051181851
ABSTRACT:
Optical transceiver apparatus for detecting angular misalignment between a pylon and fuselage of a helicopter, includes an optical transmitter secured to one of the pylon and fuselage and which transmits three spaced optical beams; an optical receiver which receives the optical beams from each optical transmitter, the optical receiver being mounted on another one of the pylon and fuselage, the optical receiver including a two linear detectors which detects angular twist between the pylon and fuselage from a null position in response to two of the optical beams, substantially irrespective of the distance between the pylon and fuselage, and a radially variable detector which detects elevation and azimuth changes of the pylon with respect to the fuselage from a null position in response to the third of the optical beams, substantially irrespective of the distance between the pylon and fuselage.
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Buczinski Stephen C.
DRS/Photronics Corporation
Gittes Marvin S.
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