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Proceedings Paper

Ladar fiber optic sensor system for aircraft applications
Author(s): Gregory L. Abbas; Michael de la Chapelle; Fernando Dones; D. Martin; Charles R. Porter; Richard S. Teal; Edward J. Vertatschitsch
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Paper Abstract

A ladar fiber optic sensor (LFOS) for aircraft applications is described. Chirped intensity- modulated ranging is used to estimate linear position. LFOS technology offers several advantages over other fiber optic sensor techniques proposed for aircraft position sensing applications, including small and robust transducer heads, inherent multiplexing capability, and inherent fault isolation capability. LFOS sensors have been integrated inside a flight control surface hydraulic actuator and inside a pilot's sidestick controller. Closed loop operation of the actuator using the LFOS sensor for position feedback was successfully demonstrated in the laboratory. The LFOS sensors in the sidestick controller were used as inputs to fly a flight simulator. The current LFOS interface electronics is contained on two VME circuit cards, with the capability to service four multiplexed sensors. Excellent performance has been achieved. Deviation from linearity over a 7-in. stroke is better than 0.05% of full scale. The RMS measurement noise is less than 15 microns for a 1 millisecond measurement interval.

Paper Details

Date Published: 9 February 1993
PDF: 5 pages
Proc. SPIE 1799, Specialty Fiber Optic Systems for Mobile Platforms and Plastic Optical Fibers, (9 February 1993); doi: 10.1117/12.141341
Show Author Affiliations
Gregory L. Abbas, Boeing Defense & Space Group (United States)
Michael de la Chapelle, Boeing Defense & Space Group (United States)
Fernando Dones, Boeing Defense & Space Group (United States)
D. Martin, Boeing Defense & Space Group (United States)
Charles R. Porter, Boeing Defense & Space Group (United States)
Richard S. Teal, Boeing Defense & Space Group (United States)
Edward J. Vertatschitsch, Boeing Defense & Space Group (United States)


Published in SPIE Proceedings Vol. 1799:
Specialty Fiber Optic Systems for Mobile Platforms and Plastic Optical Fibers
Luis Figueroa; Mototaka Kitazawa; Norris E. Lewis; Robert E. Steele; Deepak Varshneya, Editor(s)

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