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Liquid rocket actuators and operatorsAll the types of actuators and associated operators used in booster, upper stage, and spacecraft propulsion and reaction-control systems except for chemical-explosive actuators and turbine actuators are discussed. Discussion of static and dynamic seals, mechanical transmission of motion, and instrumentation is included to the extent that actuator or operator design is affected. Selection of the optimum actuator configuration is discussed for specific application which require a tradeoff study that considers all the relevant factors: available energy sources, load capacity, stroke, speed of response, leakage limitations, environmental conditions, chemical compatibility, storage life and conditions, size, weight, and cost. These factors are interrelated with overall control-system design evaluations that are beyond the scope of this monograph; however, literature references are cited for a detailed review of the general considerations. Perinent advanced-state-of-the-art design concepts are surveyed briefly.
Document ID
19740009672
Document Type
Special Publication (SP)
Date Acquired
September 3, 2013
Publication Date
May 1, 1973
Subject Category
AUXILIARY SYSTEMS
Report/Patent Number
NASA-SP-8090
Funding Number(s)
CONTRACT_GRANT: NAS3-12057
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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NameType 19740009672.pdf STI