A battery power model for the EUVE spacecraftThis paper describes a battery power model that has been developed to simulate and predict the behavior of the 50 ampere-hour nickel-cadmium battery that supports the Extreme Ultraviolet Explorer (EUVE) spacecraft in its low Earth orbit. First, for given orbit, attitude, solar array panel and spacecraft load data, the model calculates minute-by-minute values for the net power available for charging the battery for a user-specified time period (usually about two weeks). Next, the model is used to calculate minute-by-minute values for the battery voltage, current and state-of-charge for the time period. The model's calculations are explained for its three phases: sunrise charging phase, constant voltage phase, and discharge phase. A comparison of predicted model values for voltage, current and state-of-charge with telemetry data for a complete charge-discharge cycle shows good correlation. This C-based computer model will be used by the EUVE Flight Operations Team for various 'what-if' scheduling analyses.
Document ID
19940034858
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yen, Wen L. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Littlefield, Ronald G. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mclean, David R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tuchman, Alan (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Broseghini, Todd A. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Page, Brenda J. (AlliedSignal Technical Services Corp. Seabrook, MD, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA Computing in Aerospace Conference, 9th, San Diego, CA, Oct. 19-21, 1993, Technical Papers. Pt. 2 (A94-11401 01-62)
Publisher: American Institute of Aeronautics and Astronautics