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Aviation History
1948
1948 - 0253.PDF
Flight, February 19th, 1948. Advt. EXCLUSIVE Shown in this blue-print are features exclusive to Rotax electric actuators; the recirculating ball thread ram mechanism having an efficiency of over 90% ; electro magnetic retention of the first annulus allowing the ram to take up a safe position in the event of a power failure and to return immediately to normal operation on restoration of current; the electro magnetic brake, operated by the limit switches, controlling over-run within an exceptionally fine tolerance; the fully floating gear box transmitting power from the motor. All these features are patented. Together they provide the lightest and most efficient electric actuation of control surfaces, valves, shutters, undercarriages, flaps and components requiring change of position during flight. The example illustrated is the A.0501 15001b. electric linear actuator which is standard equipment on the Bolls Royce civil Merlin power plant. ROTAX LIMITED • LONDON • N.W.10 • ENRI.AND HOTAX
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