NASA NTRS · 19730018691
Active-standby servovalue/actuator development
Abstract
A redundant, fail/operate fail/fixed servoactuator was constructed and tested along with electronic models of a servovalve. It was found that a torque motor switch is satisfactory for the space shuttle main engine hydraulic actuation system, and that this system provides an effective failure monitoring technique.
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Masm, R. K.. 1973-05-30. Active-standby servovalue/actuator development. https://ntrs.nasa.gov/citations/19730018691
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