Sikorsky Aircraft Corporation

Zygo Corporation

Robert Mark Lex

Zaffir A Chaudhry

Fanping Sun

Andrew Eric Carlson

Austin Fang

Curtis S James

Seung Bum Kim

Alonso Guzman

David James Majko

Matthew James Wasilewski

Michael Metz

Harvey A Samuels

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

A monolithic corrector plate for an interferometer, includes a substrate having an input face for intercepting a first beam emitted by the interferometer, and an output face opposite the input face. An aperture integral with the substrate is configured to transform a first beam intercepted by the input face into a second beam emerging from the output face.

Monolithic corrector plate

Growing community of inventors

Guilford, CT, United States of America

Robert Mark Lex