Intelligent chemical sensor systems for in-space safety applications

G. W. Hunter, J. C. Xu, P. G. Neudeck, D. B. Makel, B. Ward, C. C. Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Scopus citations

Abstract

Future in-space and lunar operations will require significantly improved monitoring and integrated System Health Management (ISHM) throughout the mission. In particular, the monitoring of chemical species is an important component of an overall monitoring system for space vehicles and operations. For example, in leak monitoring of propulsion systems during launch, in-space, and on lunar surfaces, detection of low concentrations of hydrogen and other fuels is important to avoid explosive conditions that could harm personnel and damage toe vehicle. Dependable vehicle operation also depends on the timely and accurate measurement of these leaks. Thus, the development of a sensor array to determine the concentration of fuels such as hydrogen, hydrocarbons, or hydrazine as well as oxygen is necessary. Work has been on-going to develop an integrated smart leak detection system based on miniaturized sensors to detect hydrogen, hydrocarbons, or hydrazine, and oxygen. The approach is to implement Microelectromechanical Systems (MEMS) based sensors incorporated with signal conditioning electronics, power, data storage, and telemetry enabling intelligent systems. The final sensor system will be self-contained with a surface area comparable to a postage stamp. This paper discusses the development of this "Lick and Stick" leak detection system and it's application to In-Space Transportation and other Exploration applications.

Original languageEnglish
Title of host publicationCollection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages464-471
Number of pages8
ISBN (Print)1563478188, 9781563478185
DOIs
StatePublished - 2006
EventAIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference - Sacramento, CA, United States
Duration: 9 Jul 200612 Jul 2006

Publication series

NameCollection of Technical Papers - AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
Volume1

Conference

ConferenceAIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference
Country/TerritoryUnited States
CitySacramento, CA
Period9/07/0612/07/06

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