reaction wheel


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reaction wheel

[rē′ak·shən ‚wēl]
(mechanical engineering)
A device capable of storing angular momentum which may be used in a space ship to provide torque to effect or maintain a given orientation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Masterson, Development and validation of empirical and analytical reaction wheel disturbance models, [M.S.
In the second three orbits, three magnetorquers and one reaction wheel are used for the stable mode.
In low-altitude mapping orbit, Dawn will prolong its hydrazine supply by switching to a "hybrid mode" of pointing, where it will use its two remaining functional reaction wheels in combination with hydrazine thrusters to point itself.
The redesigned reaction wheels were successfully launched last year on the Transition Region and Coronal Explorer, a satellite mission that is studying the sun's coronal region with the TRACE satellite in April 1998.
Zhou, "A novel vibration isolation system for reaction wheel on space telescopes," Acta Astronautica, vol.
Caption: Steadied by Sunlight: Kepler's new mission, K2, uses sunlight to make up for a lost reaction wheel and keep the telescope balanced.
Yang, "Spacecraft attitude and reaction wheel desaturation control," IEEE Transactions on Aerospace and Electronic Systems, vol.
Speaking on the debacle Charles Sobeck, deputy project manager at Ames Research Center, told Discovery News, "People are definitely saddened by the loss of another reaction wheel. It certainly is not good news for the mission, which has been performing so well and had so much promise for doing even better."
After losing an attitude-controlling reaction wheel in October, HALCA resumed observations in December but lost control of its orientation a second time later that month because of a commanding error.