The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2016
Filed:
Feb. 13, 2013
Sikorsky Aircraft Corporation, Stratford, CT (US);
Fanping Sun, Glastonbury, CT (US);
Zaffir A. Chaudhry, South Glastonbury, CT (US);
Seung Bum Kim, Manchester, CT (US);
Austin Fang, Fairfield, CT (US);
Matthew James Wasilewski, Meriden, CT (US);
Robert Mark Lex, Guilford, CT (US);
Curtis S. James, Palm City, FL (US);
Harvey A. Samuels, West Palm Beach, FL (US);
Alonso Guzman, Riviera Beach, FL (US);
David James Majko, Port Saint Lucie, FL (US);
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT (US);
Abstract
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.