Publication Date:
2019-07-13
Description:
The 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.
Keywords:
INSTRUMENTATION AND PHOTOGRAPHY
Type:
NASA-TM-106141
,
E-7773
,
NAS 1.15:106141
,
Annual Space System Health Management Technology Conference; Nov 17, 1992 - Nov 18, 1992; Cincinnati, OH; United States
Format:
application/pdf
Permalink