NASA Technical Reports Server (NTRS) : Evaluation pdf

NASA Technical Reports Server (NTRS) : Evaluation

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Description of the Book:

The Department of Energy (DOE) and NASA have identified Stirling Radioisotope Generators (SRG) as a candidate power system for use on long-duration, deep-space science missions and Mars rovers. One of the developments planned for an upgraded version of the current SRG design is to achieve higher efficiency by increasing the overall operating temperature of the system. Currently, the SRG operates with a heater head temperature of 650 C and is fabricated from the nickel base superalloy 718. This temperature is at the limit of Alloy 718’s capability, and any planned increase in temperature will be contingent on identifying a more capable material from which to fabricate the heater head. To this end, an assessment of material candidates was performed assuming a range of heater head temperatures. The chosen alternative material candidates will be discussed, along with the development efforts needed to ensure that these materials can meet the demanding system requirements of long-duration operation in hostile environments

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 12/1/2003
• Year: 2003
• Book Topics/Themes: NASA Technical Reports Server (NTRS), HIGH TEMPERATURE, STIRLING CYCLE, HEAT RESISTANT ALLOYS, ROVING VEHICLES, DEEP SPACE, MARS SURFACE, NICKEL ALLOYS, Bowman, Randy, Ritzert, Frank, Freedman, Marc

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