Abstract

Operationally Responsive Space (ORS) concepts emphasize satellites that are faster, cheaper and good enough. Applying this notion to ORS thermal control subsystems (TCS) allows for more relaxed design methodologies. That is, ORS TCS should be robust enough to be able to handle most but not all situations. Consequentially, a new approach to identifying worst case orbits employing a combination of statistical and historical data was sought for these specific types of missions. In effect, orbits that have little potential of being utilized for ORS missions were disregarded. Design hot and cold case orbital parameters for four satellite surface types utilizing an approach more suitable for ORS were found. A hot and cold case design orbit was found at Beta Angle/inclination combinations of 72°/52° and 0°/28°, respectively.

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