Efficient stationkeeping design for mixed fuel systems in response to a failure of an electric thruster
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United States of America Patent
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May 8, 2018
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N/A
app pub date -
Jun 29, 2015
filing date -
Jun 29, 2015
priority date (Note) -
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Abstract
Apparatus and methods for stationkeeping in a satellite. The satellite includes a north electric thruster and a south electric installed on a zenith side, an east chemical thruster installed on an east side, and a west chemical thruster installed on a west side. An orbit controller detects a failure of one of the electric thrusters. In response to the failure, the orbit controller controls a burn of the remaining electric thruster proximate to an orbital node. The orbit controller controls a burn of one of the chemical thrusters at 90°±5° from the burn of the remaining electric thruster, and controls a burn of the other one of the chemical thrusters at 270°±5° from the burn of the remaining electric thruster.
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