A Real-time Sensor for Hydrogen Cyanide in Spacecraft Atmospheres

Award Information
Agency:
National Aeronautics and Space Administration
Amount:
$70,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
2001
Phase:
Phase I
Agency Tracking Number:
NASA891
Solicitation Topic Code:
N/A
Small Business Information
Southwest Sciences, Inc.
1570 Pacheco Street, Suite E-11, Santa Fe, NM, 87505
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 David Bomse
 Principal Research Scientist
 (505) 984-1322
 dbomse@swsciences.com
Business Contact
 Dr. Alan Stanton
Title: President
Phone: (505) 984-1322
Email: astanton@swsciences.com
Research Institution
N/A
Abstract
A need exists for continuous monitoring of hydrogen cyanide (HCN) in spacecraft/habitat air. HCN, a highly toxic gas generated by burning or smoldering plastics, can provide early warning of spacecraft fires. NASA has established a Spacecraft Maximum Allowable Concentration (SMAC) of 1 ppm for manned missions exceeding one week. Useful space-borne instruments must satisfy stringent requirements unique to manned missions in space: low power draw, low weight, fully automated operation, self-calibrating, self-checking, and long term, maintenance free operation. The sensors also require an exceptional combination of sensitivity and selectivity: a 1 ppm alarm point requires a detection sensitivity of 100 parts per billion, yet the system must be free of false alarms despite by large concentrations of other species. Southwest Sciences proposes the development of a sensor for hydrogen cyanide based on optical absorption spectroscopy using diode lasers. This approach will meet all of the requirements identified above for space-borne sensors. Two types of diode lasers could be used. Each has a different set of advantages and disadvantages, and the Phase I effort will determine which of the two is best suited to NASA's needs.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government