reaction motor


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reaction motor

[rē′ak·shən ‚mōd·ər]
(aerospace engineering)
(electricity)
A synchronous motor whose rotor contains salient poles but which has no windings and no permanent magnets.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Finally, a trio of equidistantly placed Reaction Motors Division (RMD) Vernier engines slowed several Surveyor spacecraft for lunar soft landings during 1966-1968.
RMI, later Reaction Motors Division after acquisition by Thiokol, powered the earliest X-planes, including the X-1, D-558-2, and the X-15; provided the vernier and attitude motors for the lunar lander; and propelled the MX-774 rocket, the progenitor of the Atlas missile.
The remaining seven chapters are edited papers prepared and presented by several of the founders of RMI and follow the development of RMI until acquisition by Thiokol as Reaction Motors Division (RMD) and the eventual dissolution of the division in 1972.