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The development of hydrogen sensor technology at NASA Lewis Research CenterThe detection of hydrogen leaks in aerospace applications, especially those involving hydrogen fuel propulsion systems, is of extreme importance for reasons of reliability, safety, and economy. Motivated by leaks occurring in liquid hydrogen lines supplying the main engine of the Space Shuttle, NASA Lewis has initiated a program to develop point-contact hydrogen sensors which address the needs of aerospace applications. Several different approaches are being explored. They include the fabrication of PdAg Schottky diode structures, the characterization of PdCr as a hydrogen sensitive alloy, and the use of SiC as a semiconductor for hydrogen sensors. This paper discusses the motivation behind and present status of each of the major components of the NASA LeRC hydrogen sensor program.
Document ID
19930017832
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hunter, Gary W. (NASA Lewis Research Center Cleveland, OH, United States)
Neudeck, Philip G. (NASA Lewis Research Center Cleveland, OH, United States)
Jefferson, G. D. (NASA Lewis Research Center Cleveland, OH, United States)
Madzsar, G. C. (NASA Lewis Research Center Cleveland, OH, United States)
Liu, C. C. (Case Western Reserve Univ. Cleveland, OH., United States)
Wu, Q. H. (Case Western Reserve Univ. Cleveland, OH., United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1993
Subject Category
Instrumentation And Photography
Report/Patent Number
NAS 1.15:106141
NASA-TM-106141
E-7773
Meeting Information
Meeting: Annual Space System Health Management Technology Conference
Location: Cincinnati, OH
Country: United States
Start Date: November 17, 1992
End Date: November 18, 1992
Sponsors: AIAA
Accession Number
93N27021
Funding Number(s)
PROJECT: RTOP 590-21-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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