Thermal design and analysis of the Spartan Lite spacecraft

Statistics – Applications

Scientific paper

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Spaceborne And Space Research Instruments, Apparatus, And Components, Thermal Analysis, Differential Thermal Analysis, Differential Thermogravimetric Analysis

Scientific paper

The Spartan Lite spacecraft is an expendable instrument carrier bus with a generic design capable of accommodating 50 kg. class science instruments. The spacecraft is stowed prior to operations in the Space Shuttle cargo bay in an extended ``Hitchhiker'' canister. The Orbiter carries the spacecraft into space and ejects it into a free flying, low earth orbit. The spacecraft then assumes either a stellar or solar inertial attitude for a 3 to 12 month science observing mission. The Spartan Lite thermal design is passive, with the exception of a payload powered heater bus. Challenges in the thermal design included working with limited heater power, a wide range of possible on-orbit environments, and a requirement to provide thermal boundary conditions that accommodate a variety of science instruments. This paper will present the thermal design and analysis up to the Critical Design Review status for the Spartan Lite spacecraft. A description of analytical tools used, results from analysis, and thermal design implementation will be included.

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