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Record 2 of 256
Microfabricated Chemical Gas Sensors and Sensor Arrays for Aerospace Applications
Author and Affiliation:
Hunter, Gary W.(NASA Glenn Research Center, Cleveland, OH, United States)
Abstract: Aerospace applications require the development of chemical sensors with capabilities beyond those of commercially available sensors. In particular, factors such as minimal sensor size, weight, and power consumption are particularly important. Development areas which have potential aerospace applications include launch vehicle leak detection, engine health monitoring, and fire detection. Sensor development for these applications is based on progress in three types of technology: 1) Micromachining and microfabrication (Microsystem) technology to fabricate miniaturized sensors; 2) The use of nanocrystalline materials to develop sensors with improved stability combined with higher sensitivity; 3) The development of high temperature semiconductors, especially silicon carbide. This presentation discusses the needs of space applications as well as the point-contact sensor technology and sensor arrays being developed to address these needs. Sensors to measure hydrogen, hydrocarbons, nitrogen oxides (NO,), carbon monoxide, oxygen, and carbon dioxide are being developed as well as arrays for leak, fire, and emissions detection. Demonstrations of the technology will also be discussed. It is concluded that microfabricated sensor technology has significant potential for use in a range of aerospace applications.
Publication Date: Jan 01, 2005
Document ID:
20050210196
(Acquired Sep 12, 2005)
Subject Category: SPACE SCIENCES (GENERAL)
Document Type: Preprint
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH, United States
Organization Source: NASA Glenn Research Center; Cleveland, OH, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: GAS DETECTORS; AEROSPACE ENGINEERING; MICROMACHINING; HIGH TEMPERATURE ENVIRONMENTS; SEMICONDUCTORS (MATERIALS); SILICON CARBIDES; NITROGEN OXIDES; TECHNOLOGY UTILIZATION; STABILITY; SENSITIVITY
Miscellaneous Notes: Wayne State University Conference, April 2, 2002
Availability Source: Other Sources
Availability Notes: Abstract Only
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