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Near Earth Asteroid Rendezvous Spacecraft Power System Flight Performance
Technical Paper
1999-01-2485
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The Near Earth Asteroid Rendezvous spacecraft is the first to launch of the NASA Discovery programs. Its power subsystem is a direct energy transfer architecture with a Superâ„¢ nickel cadmium battery and four fixed solar panels populated with gallium arsenide on germanium solar cells. The distance from the Sun varies significantly during the mission including a record-setting 2.2-AU aphelion distance resulting in large variations in solar array I-V characteristics. To minimize the solar array size, the solar array and power system electronics are designed to operate at voltages on both sides of the array's maximum power point voltage. The power subsystem has performed as designed and has demonstrated robust performance in-flight though launch, mission aphelion, boost charging, and an attitude anomaly.
Citation
Jenkins, J. and Dakermanji, G., "Near Earth Asteroid Rendezvous Spacecraft Power System Flight Performance," SAE Technical Paper 1999-01-2485, 1999, https://doi.org/10.4271/1999-01-2485.Also In
References
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- Jenkins Jason E. Hayden Jeff W. Picket David F. Near Earth Asteroid Rendezvous Flight Battery Performance: Boost Charge Response of Super-NiCd Following Extended Trickle Charge Flight Storage Proc. The Thirteenth Annual Battery Conference on Applications and Advances IEEE 98TH8299 259 263 1998