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Preliminary assessment of rover power systems for the Mars Rover Sample Return Mission
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bents, David J. |
| Copyright Year | 1989 |
| Abstract | Four isotope power system concepts are presented and compared on a common basis for application to on-board electrical prime power for an autonomous planetary rover vehicle. A representative design point corresponding to the Mars Rover Sample Return (MRSR) preliminary mission requirements ( 5 0 0 W) was selected for comparison purposes. All systems concepts utilize the GPHS isotope heat source developed by DOE. Two of the concepts employ thermoelectric (TE) conversion: one using the GPHS RTG used as a reference case, the other using an advanced RTG with improved thermoelectric materials. The other two concepts employed are dynamic isotope power systems (DIPS): one using a closed Brayton cycle (CBC) turboalternator, and the other using a free piston Stirling cycle engine/linear alternator (FPSE) with integrated heat source/heater head. Near term technology levels have been assumed for concept characterization using component technology figure-of-merit values taken from the published literature. For example, the CBC characterization draws from the historical test database accumulated from space Brayton cycle subsystems and components from the NASA "B" engine through the mini-BRU. TE system performance is estimated from Voyager/MHW-RTG flight experience through Mod-RTG performance estimates considering recent advances in TE materials |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890014147.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
