Lissandrini, Marco

A tracking unit 20 configured to connect to a robotic device 200 and move across a surface 101 of an object 100. The tracking unit 20 includes a body 21, one or more distance sensors 30 mounted to a first side of the body 21 and configured to detect a distance from the object 100, and one or more peripheral sensors 40 mounted to a second side of the body 21 and configured to detect a peripheral feature 110. A controller 90 is configured to receive signals from the one or more distance sensors 30 and the one or more peripheral sensors 40. The controller 90 is configured to position the body 21 a fixed distance away from the object 100 and to prevent contact between the body 21 and the peripheral feature 110.

Wing assemblies comprise a slat, wing support structures, and a gap-adjustment assembly configured to permit selective adjustment of the slat relative to the wing support structures. The gap-adjustment assembly comprises a track member and an adjustment member. The track member is pivotally coupled relative to the wing support structures about a track-member axis, the slat is operatively translationally coupled to the track member, and the track member is configured to constrain translation of the slat between a stowed position and a deployed position. The adjustment member is pivotally coupled relative to the wing support structures about an adjustment-member axis and pivotally coupled to the track member about a linkage axis. The adjustment member is configured to permit selective adjustment of a direct distance between the adjustment-member axis and the linkage axis.

Hybrid propulsion systems that utilize liquid natural gas solid oxide fuel cells in a manner practical for use in aircraft that avoid the use of heavy batteries, provide transient response times suitable for use in aircraft, and/or simplify reactant pre-conditioning systems using a compressor and turbine pair operatively coupled to the solid oxide fuel cell. Such hybrid propulsion systems for an aircraft may include a liquid natural gas solid oxide fuel cell, a motor driven by electric power from the solid oxide fuel cell, a gearbox operatively coupled to the motor, and a turbofan engine configured to generate thrust for the aircraft. The turbofan engine may be configured to provide electric power and shaft power and may include a duct fan that is operatively coupled to the motor via the gearbox, with the duct fan being driven by mechanical power from the gearbox and by the motor.

Bleed-air systems comprise a bleed-air turbine configured to receive at least a first portion of bleed air from a jet engine and deliver it to a cabin, a cabin-exhaust compressor operatively coupled to the bleed-air turbine and configured to receive cabin exhaust air from the cabin, and a cabin-exhaust nozzle configured to receive the cabin exhaust air from the cabin-exhaust compressor. Aircraft comprise a fuselage, a wing, a jet engine, and a bleed-air system. Methods comprise expanding at least a first portion of bleed air from a jet engine to drive a cabin-exhaust compressor, compressing cabin exhaust air from a cabin with the cabin-exhaust compressor, and nozzling the cabin exhaust air to environment.

Method of monitoring motion of an aircraft (100) during flight. The method includes determining sensed motion of the aircraft (100) about an axis during the flight and determining predictive motion of the aircraft (100) about the axis during the flight (based on a digital model (200)). An error is determined based on the sensed motion and the predictive motion. An effector (110) on the aircraft (100) is determined that controls the motion of the aircraft about the axis. The error is converted into an amount of necessary movement of the effector (110) to correct the error.

A system and a method include a lower support, an upper support, a first coupler connected to the lower support and the upper support at a first point of contact and a second point of contact, respectively, and a second coupler connected to the lower support and the upper support at a third point of contact and a fourth point of contact, respectively. The first coupler and the second coupler are configured to retain a test article therebetween.

An anti-slip system (10) for skis, in particular for skiing activities, comprises an anti-slip strip (20) comprising a plurality of protruding elements (23) movable relative to the anti-slip strip (20) itself and, moreover, a support panel (30) having a lower face (32) couplable with a base (101) of the ski (100) and an upper face (31) couplable with a main panel (104) of a ski (100), present in which there is a groove (33) adapted to contain the anti-slip strip (20). The groove (33) has a plurality of through holes passing through towards the lower face (32), each of which is adapted to receive a corresponding protruding element (23) of the anti-slip strip (20). The system (10) also comprises a movement means (40) configured to move the anti-slip strip (20) inside the groove (33) between a neutral configuration, in which the protruding elements (23) are arranged outside the holes or only partly inside the holes without protruding from them beyond the lower face (32), and an anti-slip configuration, in which the protruding elements (23) are arranged inside the holes so as to pass through them in a projecting manner relative to the lower face (32) of the support panel (30). The subject matter of the present invention also relates to a method for producing a ski for skiing activities.

A pneumatic motor (1) comprising: an actuator (2) at least partially mobile in an actuation chamber (CA); a first plugging assembly (3) defining a first driving chamber (C1) and a second driving chamber (C2) and comprising a first plug (5) reversibly movable at least between an enabling position and an obstructing position; a second plugging assembly (4) defining a third driving chamber (C3) in fluid communication with the second driving chamber (C2) and an inflow/outflow chamber (CX) in fluid communication with the actuation chamber (CA). In particular, the inflow/outflow chamber (CX) has a first opening (A1) and a second opening (A2) respectively in fluid communication with the inlet opening (I) and the outlet opening (O) of the motor (I). In addition, the second plugging assembly (4) comprises a second plug (7) reversibly movable at least between an inflow position, in which it allows a fluid communication between the inflow/outflow chamber (CX) and the first opening (A1), and an outflow position, in which it allows a fluid communication between the inflow/outflow chamber (CX) and the second opening (A2). In particular, the first plugging assembly (3) and/or the second plugging assembly (4) have a vent opening (S) adapted to promote a continuous discharge of a fluid from the second driving chamber (C2) and/or from the third driving chamber (C3).

An auxiliary support device (1) for doors or windows with at least one hinged leaf, comprising a frame block (2) and a plate (3) installed on the leaf (A) of a door or window. Furthermore, the device (1) comprises a cable (4) having an upper end (5) and a lower end (6) constrained respectively to said frame block (2) and to a lower connection portion (3A) of the plate (3) so that a reversible movement of the leaf (A) from the closed position to the open position results in a reversible switch of the cable (4) between a loose configuration and a tensioned configuration, in which it supports the weight of the leaf (A), transferring it to the frame block (2). The device (1) comprises a support rod (7) and a thrust-bearing element (11) operatively associated so that the reversible movement of the leaf (A) from the closed position to the open position results in the reversible sliding of the support rod (7) from an active configuration, in which the upper end (9) of the support rod (7) is in abutment against the thrust-bearing element (11) to transfer at least in part the weight of the leaf (A) to the frame block (2), and an inactive configuration, in which the upper end (9) of the support rod (7) is not in abutment against said thrust-bearing element (11).

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