摘要:
A system (230) includes an engine cover (124; 200) covering a side-facing rotorcraft engine (120) and having an opening (204) and an ice protection member (126; 210) mounted on the engine cover (124; 200) between the opening (204) and the engine (120), an area of the ice protection member (126; 210) smaller than an area of the opening (204). The ice protection member (126; 210) is configured to partially cover the opening (204) to prevent ice having a particular size from entering into the engine (120) and to allow air flow downstream into the engine (120).
摘要:
The disclosure relates to a flight control system for a rotary aircraft, the rotary aircraft having a longitudinal controller, a lateral controller, a directional controller, and a vertical controller, the control system comprising a longitudinal loop design, a lateral loop design, a directional loop design and a vertical control loop design, a forward speed hold loop and a lateral speed hold loop automatically engaging when the longitudinal controller is returned to a detent position and the aircraft groundspeed is outside a first groundspeed threshold, longitudinal and lateral maneuverability being controlled by either a pitch attitude and lateral speed loop or a pitch rate and roll rate loop when the longitudinal controller is out of the detent position.
摘要:
According to one embodiment, an empennage attachment system features an aft attachment mechanism (164) and a forward attachment system (200). The aft attachment mechanism (164) is configured to be coupled to a tail section of a body of an aircraft (100) and to an empennage (160) proximate to an aft spar (162) of the empennage (160). The aft attachment mechanism (164) defines a pitch axis (165) such that the aft attachment mechanism (164) allows the empennage (160) to rotate about the pitch axis (165). The forward attachment system (200) is configured to be coupled to the tail section of the body and to the empennage (160) proximate to a forward spar (166) of the empennage (160). The forward attachment system (200) is configured to restrict rotation of the empennage (160) about the pitch axis (165) to an allowable range of motion.
摘要:
A lightweight skid shoe assembly (100) comprises a body (200) of wear resistant, non-metallic or partially metallic material; and a structure coupling mechanism (300); wherein the body prevents friction-related damage to the structure. Another lightweight skid shoe assembly (150) comprises a body of wear resistant, non-metallic or partially metallic material selected from the group consisting of: a polyamide or polyimide impregnated carbon fiber layup, a peek or PEI injection mold with carbon fiber, compression molded carbon fiber or fiberglass, a resin infusion with carbon fiber preform fabric, a fiber reinforced thermoset, acetal resin, machined acetal or thermoplastic, thermosetting plastic, or a metal-matrix composite; wherein the body prevents friction-related damage to a structure. Another lightweight skid shoe assembly (180) comprises a body of wear resistant, non-metallic or partially metallic material; and a shear-bearing mechanism (400); wherein the shear-bearing mechanism directs shear forces away from the body; and wherein the body prevents friction-related damage to the structure.