Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 22890
Amount: $382,399.00
Phase: Phase II
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
2952 George Washington Way, Richland, WA, 99352
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Brad A. Ross
 (509) 375-4000
Business Contact
Phone: () -
Research Institution
Stirling Power systems have the potential to provide enabling technology for solar system exploration space science missions because of their relatively high efficiency and low mass. There is a need for a 2 watt electrical output power source for Martian weather stations and other applications. Radioisotopes are the only feasible heat source. The General Purpose Heat Source (GPHS) is oversized because its minimal output is 250 thermal watts. The Radioisotope Heating Unit (RHU) supplies 1.1 thermal watts for heating of electronics, and is capable of operation at 500 degrees C. This heat source temperature is well-suited for small power level stirling engines; the number of RHUs needed depends on the desired output power. Stirling Technology (STC) proposes to design a Stirling power converter with an output of two electrical watts. The innovative work is based on 5 watt and 11.7 watt output engines previously developed at STC, but requires novel displacer support and alternator configuration.

* Information listed above is at the time of submission. *

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