Position detector

Details Position detector Position detector

G - Physics

01

B

340/136, 354/18,

G01B 11/00 (2006.01) B64C 27/00 (2006.01) G01B 11/16 (2006.01)

Patent

CA 1227330

POSITION DETECTOR ABSTRACT A detector for checking the symmetry of a helicopter rotor while it is rotating has a scanner (11) which scans vertically 2 field of view (15) and the view is interrupted by a vertical strip on the blade tip (16). A slot (18) in the strip gives a characteristic signal as at (L2). The position of the signal (L2) in a scanning cycle gives an indication of the height of the blade tip and also the circum- ferential spacing between blades.

440840

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