Hydraulic actuators are currently used to operate the propellant control valves (PCV) for the space shuttle main engine (SSME) and other rocket engines. These actuators are characterized by large power to weight ratios, large force capabilities, and rapid accelerations, which favor their use in control valve applications. However, hydraulic systems are also characterized by susceptibility to contamination, which leads to frequent maintenance requirements. The Control Mechanisms Branch (EP34) of the Component Development Division of the Propulsion Laboratory at the Marshall Space Flight Center (MSFC) has been investigating the application of electromechanical actuators as replacements for the hydraulic units in PCV's over the last few years. This report deals with some testing and analysis of a PCV electromechanical actuator (EMA) designed and fabricated by HR Textron, Inc. This prototype actuator has undergone extensive testing by EP34 personnel since early 1993. At this time, the performance of the HR Textron PCV EMA does not meet requirements for position tracking.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Controller Modeling and Evaluation for PCV Electro-Mechanical Actuator


    Beteiligte:
    J. K. Parker (Autor:in)

    Erscheinungsdatum :

    1993


    Format / Umfang :

    5 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch







    Electro mechanical actuator

    FLORES GIRALDO SANTIAGO / FERNANDEZ GARCIA FRANCISCO JAVIER | Europäisches Patentamt | 2016

    Freier Zugriff

    FAILSAFE ELECTRO-MECHANICAL ACTUATOR

    BALSIGER DERICK S / BLOXHAM KEITH A | Europäisches Patentamt | 2024

    Freier Zugriff