Magazine Article

Optimization of Orientations of Spacecraft Reaction Wheels

TBMG-1012

12/01/2002

Abstract
Content

A report presents a method of optimizing the orientations of three reaction wheels used to regulate the angular momentum of a spacecraft. The method yields an orientation matrix that minimizes mass, torque, and power demand of the reaction wheels while maximizing the allowable duration between successive angular-momentum dumps. Each reaction wheel is parameterized with its own unit vector, and a quadratic cost function is defined based on requirements for torque, storage of angular momentum, and power demand. Because management of angular momentum is a major issue in designing and operating an orbiting spacecraft, an angular-momentum-management strategy is parameterized and included as part of the overall optimization process. The report describes several case studies, including one of a spacecraft proposed to be placed in orbit around Europa (the fourth largest moon of Jupiter).

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Citation
"Optimization of Orientations of Spacecraft Reaction Wheels," Mobility Engineering, December 1, 2002.
Additional Details
Publisher
Published
Dec 1, 2002
Product Code
TBMG-1012
Content Type
Magazine Article
Language
English