摘要:
The exit area of a nozzle assembly is varied by translating a ring assembly located at a rear of the engine nacelle. The ring may be axially translatable along the axis of the engine. As the ring translates, the trailing edge of the ring defines a variable nozzle exit area. Translation of the ring creates an upstream exit at a leading edge of the ring assembly. The upstream exit can be used to bleed or otherwise spill flow excess from the engine bypass duct. As the engine operates in various flight conditions, the ring can be translated to obtain lower fan pressure ratios and thereby increase the efficiency of the engine. Fairings partially enclose actuator components for reduced drag.
摘要:
The invention relates to a thrust reverser comprising vanes for deflecting flow and a cowl (23) able to move between an open position releasing said deflecting vanes and a closed position covering said deflecting vanes (25) and furthermore comprising rails (45) able to slide in slideways (30), the rails (45) being mounted directly or indirectly on said cowl (23) and the slideways (30) being mounted directly or indirectly on either side of a suspension pylon (8) or vice versa, characterized in that it comprises at least one actuator able to slide the cowl (23) between its open and closed positions, the actuator being disposed in line with the corresponding rail (45), said actuator being: - either an actuator having a rotating nut (51) connected to an endless screw (47), for sliding the corresponding rail or corresponding slideway, as the case may be, - or an actuator suitable for pulling on the corresponding rail or on the corresponding slideway, as the case may be.
摘要:
The present invention relates to a thrust inverter for a turbojet engine nacelle (1) including at least one outer cowl (11) that is movable between a closed position and a thrust inversion position, said movable cowl also being able to be opened into a supporting position towards which said movable cowl is hinged and guided through the use of a guiding means that is suitable to said movable cowl and located substantially on a pylon, to which the nacelle is intended to be attached and at least one front frame (15) capable of being mounted downstream from an air blower housing for said turbojet engine and directly or indirectly holds at least one flow diversion means (12). Said thrust inverter is characterized in that the front frame is detachably connected to the housing in a translatable manner along at least one related guiding member (17) once said front frame is detached from the housing.
摘要:
The invention relates to a turbine blade (10) comprising a plurality of ribs (18) arranged one after the other in a cooling channel (14) extending along a flow inlet edge (12). The plurality of ribs is split into pairs of ribs (24) formed by two ribs arranged in the form of a skating step.
摘要:
Enveloppe externe pour une roue de turbine de turbomachine, cette enveloppe étant formée de secteurs d'anneau (120) disposés circonférentiellement bout à bout et comportant chacun une plaque (136) à orientation circonférentielle portant un bloc (138) de matière abradable, la plaque et le bloc de chaque secteur d'anneau étant décalés l'un par rapport à l'autre en direction circonférentielle, de sorte qu'une partie d'extrémité circonférentielle de la plaque de chaque secteur d'anneau recouvre une partie d'extrémité correspondante du bloc d'un secteur d'anneau adjacent.