摘要:
The present invention relates to a variable cross-section nozzle (13) for an aircraft nacelle (1) having a longitudinal axis (X), the nozzle (13) comprising doors (P) movable between a smaller cross-section position and a larger cross-section position, and movement means (15) for moving each of the doors (P) between said positions, said movement means (5) comprising actuators (16) and control means of said actuators (16), the nozzle (13) being characterised in that each of the doors (P) comprises at least one first (21) and one second (22) guide means for guiding the movement of the doors (P) with respect to a fixed structure (14) of the nozzle (13), the second guide means (22) being located downstream with respect to the first guide means (22), the first and second guide means (21, 22) each being arranged to ensure, at least locally, a substantially curvilinear path.
摘要:
The invention relates to a bent connecting rod (31) for linking a first assembly to a second assembly which are movable relative to each other and through which a flow in the space defined thereby passes. The rod has at least one first and one second pivot point (35, 38) that are designed so as to enable the pivotal movement of the connecting rod (31) relative to said first and second assemblies, respectively, the bent connecting rod (31) being suitably positionable such that the bend (40) is located upstream from said flow relative to said second pivot point (38), said second pivot point (38) being suitably built into the second movable assembly, characterized in that the bent connecting rod (31) includes at least two portions (33, 37) linked together by at least one self-aligning means (39a, 39b).
摘要:
A fan variable area nozzle (FVAN) includes a flap assembly which varies a fan nozzle exit area. An actuator system drives a sliding drive ring relative a multitude of slider tracks mounted to a fan nacelle to adjust each flap of the flap assembly through the flap linkage to pitch the flap assembly about a circumferential hinge line to vary the diameter of the annular fan nozzle exit area between the fan nacelle and the core nacelle. The FVAN may be separated into a multiple of drive ring sectors which are each independently adjustable by an associated actuator of the actuator system to provide a low profile drag asymmetrical fan nozzle exit area.
摘要:
A gas turbine engine 10 comprises a fan 13, a bypass duct 22 having a nozzle 23, through which fluid B from the fan 13 flows, and a variable area nozzle device 34 located in the nozzle 23. The variable area nozzle device 34 comprises an arcuate fairing 36 having one end 44 in slidable cooperation with the bypass duct 22. In a deployed position the area of the nozzle is reduced from that when stowed thereby improving engine operability and efficiency.
摘要:
The invention relates to a thrust reverser (18) for a nacelle (10) of an aircraft turbofan including at least one movable thrust reverser cover (20), a means for locking the cover (20), a variable-exhaust output nozzle (22) which is arranged forming a downstream extension of said cover (20) and which is movable, and at least one actuator (24) which includes an actuator rod (28) suitable for moving the variable nozzle (22) and the movable cover (20), characterised in that the reverser (18) is provided with a resilient coupler (30) comprising a body (32) which is rigidly connected to the thrust reverser cover (20), resilient return means (48) and abutments which are supported by the body (32) of the coupler (30) and which engage with the actuating rod (28) of the actuator (24) such as to resiliently return the nozzle (22) into the neutral position thereof, said return means (48) being calibrated such that, when the cover (20) is unlocked, the return means (48) oppose the relative movement of the actuating rod (28) relative to the cover (20), such as to enable the movement of the assembly consisting of the cover (20) and the nozzle (22), and when the cover (20) is locked, the actuator (24) drives the actuating rod (28) against the return means (48), such as to enable the movement of the nozzle (22).
摘要:
The invention relates to a bypass turbojet engine nacelle comprising a downstream section equipped with a thrust reverser device comprising a moving cowl (6) mounted such that it can move in translation in a direction substantially parallel to a longitudinal axis of the nacelle and able to move alternately from a closed position in which it ensures the aerodynamic continuity of the nacelle and covers deflection means (70) and an open position in which it opens a passage in the nacelle and uncovers the deflection means, the said moving cowl also being extended by at least one nozzle section (7) mounted at a downstream end of the said moving cowl, characterized in that the nozzle section comprises at least one panel (10) mounted such that it can rotate about at least one pivot about an axis substantially perpendicular to a longitudinal axis of the nacelle, the said panel further being connected to a fixed fairing structure (2) of the turbojet engine by at least one link rod (11) mounted such that it can rotate about anchor points on the panel of the nozzle section and on the fixed structure, respectively.