NDLI: 40 hp electro-mechanical actuator

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40 hp electro-mechanical actuator

Content Provider	NASA Technical Reports Server (NTRS)
Author	Fulmer Sr., Chris
Copyright Year	1996
Description	This report summarizes the work performed on the 40 BP electro-mechanical actuator (EMA) system developed on NASA contract NAS3-25799 for the NASA National Launch System and Electrical Actuation (ELA) Technology Bridging Programs. The system was designed to demonstrate the capability of large, high power linear ELA's for applications such as Thrust Vector Control (TVC) on rocket engines. It consists of a motor controller, high frequency power source, drive electronics and a linear actuator. The power source is a 25kVA 20 kHz Mapham inverter. The drive electronics are based on the pulse population modulation concept and operate at a nominal frequency of 40 kHz. The induction motor is a specially designed high speed, low inertia motor capable of a 68 peak HP. The actuator was originally designed by MOOG Aerospace under an internal R & D program to meet Space Shuttle Main Engine (SSME) TVC requirements. The design was modified to meet this programs linear rate specification of 7.4 inches/second. The motor and driver were tested on a dynamometer at the Martin Marietta Space Systems facility. System frequency response and step response tests were conducted at the Marshall Space Flight Center facility. A complete description of the system and all test results can be found in the body of the report.
File Size	22506293
Page Count	254
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19970001607
Archival Resource Key	ark:/13960/t0gv0j41n
Language	English
Publisher Date	1996-10-01
Access Restriction	Open
Subject Keyword	Electronics And Electrical Engineering Controllers Electromechanical Devices Actuators Induction Motors Electronic Equipment Performance Tests Error Analysis Rocket Engines Inverters Pulse Modulation Launch Vehicles Thrust Vector Control Frequency Response System Effectiveness Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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