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Status of Electrical Actuator ApplicationsAn ever increasing number of actuation functions historically performed by hydraulics or pneumatics are being accomplished by electric actuation. If 'end to end' systems are considered, electric actuators (EA's) are potentially lighter and more efficient. In general, system redundancies may be more easily implemented and operationally monitored. Typically, electrical components exhibit longer mean times to failure and projected lifetime costs of EA's are potentially much lower than those of other options. EA's have certain characteristics which must be considered in their application. The actual mechanical loadings must be established, for the more easily controlled EA may be operated much closer to its full capabilities. At higher rates of motion, EA's are operating as constant power devices. Therefore, it may be possible to start a movement that can not be stopped. The incorporation of high power electronics into remote locations introduces new concerns of EMI and thermal control. It is the management of these and other characteristics that forms the engineering design challenges. Work is currently in progress on EA's for aircraft and expendable launch vehicles. These applications span from ten to 40+ horsepower. The systematics and status of these actuators will be reported along with current technical trends in this area.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Roth, Mary Ellen
(NASA Lewis Research Center Cleveland, OH United States)
Taylor, Linda M.
(NASA Lewis Research Center Cleveland, OH United States)
Hansen, Irving G.
(Motive Power Development San Diego, CA United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1996
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NAS 1.15:107319
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference
Location: Washington, DC
Country: United States
Start Date: August 11, 1996
End Date: August 16, 1996
Sponsors: American Inst. of Chemical Engineers, American Society of Mechanical Engineers, Society of Automotive Engineers, Inc., American Nuclear Society, Institute of Electrical and Electronics Engineers, American Inst. of Aeronautics and Astronautics
Accession Number
Funding Number(s)
PROJECT: RTOP 538-01-11
Distribution Limits
Work of the US Gov. Public Use Permitted.
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