摘要:
An aircraft (101) includes a rotor blade (107) and a rotor hub system (301). The rotor hub system (301) includes a lead-lag damper (303) having a rod end (315) and being operably associated with the rotor blade (107); a blade adapter (307) having a first arm (309) and an opposing second arm (311); a pin (316) carried by the blade adapter (307) and configured to secure in position via the first arm (309) and the second arm (311); and an actuator (703) secured to the pin (316) and configured to adjust the position of the lead-lag rod end (315) relative to the first arm (309) and the second arm (311).
摘要:
A composite-steel hybrid mast for a rotorcraft includes a tubular, steel portion having an internal surface defining a space therein and a composite portion disposed within the space defined by the internal surface of the steel portion and held in a fixed spatial relationship with respect to the internal surface of the steel portion.
摘要:
The invention concerns a device for compensating helicopter flight control mechanical clearance. The invention concerns helicopter automatic pilot appliances (1). The helicopter automatic pilot device (2) acts on the helicopter flight controls (25, 26) assigned to mechanical clearances by means of a group of actuators called 'series actuators' (6) with rapid response and short stroke and mechanically irreversible, arranged in series on the flight controls (25, 26). The invention is characterized in that the device comprises at least one sensor of variation direction of movement setpoints of the series actuators and a clearance compensator adding to the setpoint, based on the variation direction thereof, a corrective term based on the mechanical clearance (311) affecting the flight control (25, 26) equipped with the 'series actuator' concerned.
摘要:
Un rotor d'aérodyne à voilure tournante comprend un arbre de rotor (78) relié à une source de puissance servant à son entraînement, un corps de moyeu (10) relié à l'arbre de rotor, des bras de rotor (12) inclinés par rapport à un plan perpendiculaire à l'axe du rotor (A) et des arbres de pas (16) soutenus par chaque bras de rotor. Les bras du rotor (12) supportent chacun un bras de pas (16) qui peut pivoter autour d'un axe de pas (B). Une traverse de pas (54) porte des liaisons flexibles (48), chacune de ces liaisons étant reliée à un bras de pas (42) en un point décalé latéralement par rapport à l'axe de pas associé. Les liaisons flexibles (48) relient, de façon qu'ils soient entraînés, les bras de pas (42) à la traverse de pas (54) et transmettent le mouvement de commande du pas aux pales (14) lorsque la traverse de pas (54) se déplace le long de l'axe du rotor (A). Chaque liaison flexible (48) est déplacée à dessein par une flexion radiale, pendant l'installation, dans une direction qui réduit les forces qui se développent, pendant le fonctionnement, entre les composants des paliers de ladite liaison flexible.
摘要:
L'invention concerne les aéronefs à sustentation par voilure tournante. Selon l'invention, l'aéronef comporte un dispositif élastique (28) auxiliaire de positionnement angulaire du corps de l'aéronef par rapport à l'axe de rotation de la voilure tournante (1), dispositif comportant des moyens de réglage (39-40-27) accessibles en vol au pilote. Application notamment aux autogires.
摘要:
A rotorcraft autopilot system (300, 400) includes a series actuator (302) connecting a cockpit control component (304) to a swashplate of a rotorcraft, the series actuator to modify a control input from the cockpit control component to the swashplate through a downstream control component (306). The rotorcraft autopilot system also includes a differential friction system (310, 410) connected to the cockpit control component, the differential friction system to control the series actuator to automatically adjust a position of the cockpit control component during rotorcraft flight based, in part, on a flight mode of the rotorcraft.
摘要:
An anti-torque rotor (4, 4') of a helicopter (1), having : a supporting body (14, 14'); a drive shaft (10, 10') which rotates about a first axis (B) with respect to the supporting body (14, 14'); a hub (11) connected operatively to drive shaft (10, 10') and angularly fixed with respect to first axis (B); at least one blade (12) which is connected operatively to hub (11), is angularly fixed with respect to first axis (B), and is angularly movable with respect to a second axis (D) to adjust the pitch angle of blade (12); and an actuator (16, 16') which can be operated to rotate blade (12) about second axis (D) to adjust the pitch angle of blade (12); actuator (16, 16') has an electric motor (25, 25') which generates torque along the first axis (B); and a mechanical stage (30, 30') interposed between the electric motor (25, 25') and blade (12), and designed to convert the torque into rotation of blade (12) about the respective second axes (D); electric motor (25, 25') is fixed to supporting body (14, 14').