A compact actuator (20) is arranged to selectively move an airfoil surface (27) relative to a support (27) relative to a support (21). The actuator includes a gear reduction unit (24) mounted on the support. The gear reduction unit has a ring gear (25) adapted to be rotated about a longitudinal axis (x--x), and a pinion (26) mounted on the ring gear. All bearings for the pinion gear are physically located within the gear reduction unit. The pinion gear engages a rack (23) attached to the airfoil surface such that rotation of the pinion gear will move the airfoil surface relative to the support.

 
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> Three-axis attitude control propulsion device and flying object comprising the same

> Man/machine interface for control of the automatic pilot for piloted aerodyne provided with an ATN transmission network terminal

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