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Proceedings Paper

Fiber optic total-pressure transducer for aircraft applications
Author(s): Stuart E. Reed; John W. Berthold III; Daniel W. Seal; Robert J. Baumbick
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Paper Abstract

We have completed development of a temperature compensated, self-referenced, microbend fiber optic pressure transducer for total pressure measurement. This transducer outputs the sum of altitude dependent background pressure and dynamic pressure proportional to air speed. During planned flight tests, the fiber optic pressure transducer will be installed in the same pitot pressure line as the present electronic pressure transducer, so that simultaneous data from the two transducers can be collected for subsequent analysis and comparison. Design information and design trade-offs for fiber optic total pressure measurement are presented in this paper. Methods to make pressure seals to achieve absolute pressure transduction are discussed. Information is provided on microbend fiber optic sensor design and thermal compensation. The approach used for wavelength division self-referencing is described to make the transducer output insensitive to link cable bending and connector mating/demating. Pressure calibration data is presented.

Paper Details

Date Published: 9 March 1994
PDF: 7 pages
Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); doi: 10.1117/12.169901
Show Author Affiliations
Stuart E. Reed, Babcock & Wilcox Co. (United States)
John W. Berthold III, Babcock & Wilcox Co. (United States)
Daniel W. Seal, McDonnell Douglas Aerospace (United States)
Robert J. Baumbick, NASA Lewis Research Ctr. (United States)

Published in SPIE Proceedings Vol. 2070:
Fiber Optic and Laser Sensors XI
Ramon P. DePaula, Editor(s)

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