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US 4,132,089 AGranted
Transmission of movement to a unit mounted on a rotatable carrier
AssigneePlessey Handel und Investments AG
InventorsAlexander Skinner, Ronald G. T. Cook
Life of this patent
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AssigneePlessey Handel und Investments AG
InventorsAlexander Skinner, Ronald G. T. Cook
Estimating the term…
In order to drive a unit mounted on a carrier rotatable about an axis, the drive for the unit is transmitted from a unit actuator to the unit-drive mechanism on the carrier by a shaft-driven member so arranged that its rotation relative to the carrier is unaffected by rotation of the carrier itself. In one alternative this is achieved by transmitting the output of the unit actuator through a flexible shaft which enters the carrier tangentially and is guided in the fixed structure for its adjacent end to project in a direction normal to the axis of rotation of the carrier, and in an alternative arrangement rotation transmitted to the carrier actuator is superimposed, by means of a differential gear drive arrangement, one gear of which is geared to the output shaft of the carrier drive actuator, upon the rotation of the pinion transmitting, to a ring gear coaxially rotatable about the carrier, the movement of the unit drive servomotor output shaft.
Apparatus for the transmission of movement from the rotary output element of a unit actuator forming part of a six structure to a unit-driven mechanism mounted on a carrier of at least one vectorised-thrust nozzle for use in an aircraft, having means for adjustably swivelling said nozzle about the swivel axles relative to the fixed structure to vary the thrust angle of the nozzle, and means for nozzle-area control operatively connected to the unit-drive mechanism for operation by said mechanism to vary the effective area of the nozzle, which apparatus comprises a flexible drive shaft operatively connected to the unit drive of said vectorised-thrust nozzle carrier, and means operatively connecting the output element of such unit actuator to said flexible drive shaft so as to rotate said shaft relative to the unit drive mechanism of said vectorised-thrust nozzle carrier by an amount proportional to the rotation of the output element of said unit actuator at a rate of rotation relative to the vectorised-thrust nozzle carrier which is unaffected by any rotation of the vectorised-thrust nozzle carrier relative to the fixed structure.
Dependencies are inferred from the claim text.