Abstract: Apparatus for moving tubes (10) which are displaceable upon operation of an actuator (40) inside fixed guides (20) integral with the tower (1a) of submarines (1) and the like, said actuator (40) consisting of at least one pair of linear motors (41).

Abstract: Apparatus for moving supports carrying sensors displaceable inside fixed guides integral with the towers of submarines, and the like, upon operation of an actuator, the actuator consisting of an electric motor coupled to one end of a screw actuator on which a screw nut integral with a rod is movable, the entire assembly being contained inside a housing with seals, from which the free end of said rod protrudes for fastening to the tube. The housing can include a first bearing and a second bearing or bushing for supporting the rod and the screw actuator coaxially within the housing. The housing can include a top chamber above the first bearing and a bottom chamber below the first bearing. One or both of the chambers can be filled with lubricating oil to dissipate heat and/or dampen noise. The bottom chamber can house the motor and include a dielectric oil. The motor can be controlled by an electronic actuating system using an angular position transducer.

Abstract: Optical device for indicating the glide angle for aircraft, comprising at least one unit (10) for generating a light ray with a predefined colour, at least one unit (20) for transmitting said light ray and creating a light image, and at least one unit (30) for remotely projecting said light image, characterized in that said generating unit (10) comprises at least one light source consisting of an LED (11) and said unit (20) for transmitting the light ray and creating a light image is of the optical fibre type (21, 22).