Sikorsky Aircraft Corporation

Alonso Guzman

Zaffir A Chaudhry

Fanping Sun

Austin Fang

Seung Bum Kim

Robert Mark Lex

Curtis S James

Harvey A Samuels

David James Majko

Matthew James Wasilewski

An optical blade tracking system for a rotary wing aircraft, the system including a light source generating at least one light beam, the light source coupled to a rotor blade of the rotary wing aircraft, wherein movement of the rotor blade is imparted to the light source; a two-dimensional position detector generating signals indicative of a position of the light beam along a first axis and a position of the light beam along a second axis and generating a signal indicative of an angular position of the light beam about a third axis; a processor receiving the signals, the processor determining at least one of lead-lag, flap and pitch of the rotor blade in response to the signals; and a polarizer filter positioned between the light source and the two dimensional position detector, the polarizer filter modulating intensity of the light beam onto the two-dimensional position detector.

Optical tracking of rotor blade motion

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Riviera Beach, FL, United States of America

Alonso Guzman