Aircraft control surface actuator
OwnerVyacheslav Fedorovich Ryzhko, Vladimir Petrovich Krasutsky +2inventors
InventorsVyacheslav Fedorovich Ryzhko, Vladimir Petrovich Krasutsky, Pavel Stepanovich Kotenko, Gennady Pavlovich Staritsky
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Abstract
An aircraft steering surface actuator has an electric motor, a reduction gear and a step-by-step control mechanism in the form of a cam-operated breaker in the electric motor power supply circuit. The breaker automatically deenergizes the electric motor when the steering surface is turned through one step, thus preventing the steering surface from inadvertent movement to the extreme position in case of trouble in the system.
Claims3
An aircraft steering surface actuator for step-by-step movement of said surface comprising:
- an electric motor having
- a power supply circuit,
- a winding of a rotor wired into said power supply circuit, and
- two excitation windings wired into the power supply circuit;
- a switch for selective connection of either one of said excitation windings to said power supply circuit for reversing said electric motor;
- a reduction gear having an input shaft operatively connected with said electric motor;
- an output element of said reduction gear connected with the steering surface to move the steering surface during flight control;
- means for step-by-step control of said electric motor having
- a breaker connected into said power supply circuit of said electric motor for deenergization thereof when said steering surface has moved through one step,
- said breaker including two limit switches connected into the power supply circuits of said excitation windings of the electric motor,
- a cam operatively connected with said electric motor and arranged to alternatively engage said limit switches,
- a means for setting said cam to a neutral position with respect to said limit switches, and
- an electromagnetic clutch which connects said cam with said electric motor,
- a winding of said electromagnetic clutch being included in the power supply circuit through said switch for selective connection of the excitation windings.
Dependencies are inferred from the claim text.