Design and integration of a solar AMTEC power system with an advanced global positioning satellite
- Rockwell Aerospace, Canoga Park, CA (United States). Rocketdyne Div.
- Rockwell Aerospace/Space Systems, Downey, CA (United States)
- Advanced Modular Power Systems, Inc., Ann Arbor, MI (United States)
- Phillips Lab., Kirtland AFB, NM (United States). Space and Missile Div.
A 1,200-W solar AMTEC (alkali metal thermal-to-electric conversion) power system concept was developed and integrated with an advanced global positioning system (GPS) satellite. The critical integration issues for the SAMTEC with the GPS subsystems included (1) packaging within the Delta 2 launch vehicle envelope, (2) deployment and start-up operations for the SAMTEC, (3) SAMTEC operation during all mission phases, (4) satellite field of view restrictions with satellite operations, and (5) effect of the SAMTEC requirements on other satellite subsystems. The SAMTEC power system was compared with a conventional planar solar array/battery power system to assess the differences in system weight, size, and operations. Features of the design include the use of an advanced multitube, vapor anode AMTEC cell design with 24% conversion efficiency, and a direct solar insolation receiver design with integral LiF salt canisters for energy storage to generate power during the maximum solar eclipse cycle. The modular generator design consists of an array of multitube AMTEC cells arranged into a parallel/series electrical network with built-in cell redundancy. The preliminary assessment indicates that the solar generator design is scalable over a 500 to 2,500-W range. No battery power is required during the operational phase of the GPS mission. SAMTEC specific power levels greater than 5 We/kg and 160 We/m{sup 2} are anticipated for a mission duration of 10 to 12 yr in orbits with high natural radiation backgrounds.
- OSTI ID:
- 438830
- Report Number(s):
- CONF-960805-; TRN: IM9711%%294
- Resource Relation:
- Conference: 31. intersociety energy conversion engineering conference, Washington, DC (United States), 9-14 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 31. intersociety energy conversion engineering conference. Volume 1: Aerospace power systems, aerospace technologies; Chetty, P.R.K.; Jackson, W.D.; Dicks, E.B. [eds.]; PB: 681 p.
- Country of Publication:
- United States
- Language:
- English
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