摘要:
A gas turbine engine (10) having an axial flow direction (X) therethrough in use. The gas turbine engine (10) comprises one or more rotor stages each comprising at least one rotor blade (120) having a root portion (122). The gas turbine engine (10) comprises a shroud (126) located upstream of one or more of the rotor stages relative to the axial flow direction (X). The shroud (126) defines a through passageway (128) extending between an inlet (130) and an outlet (132) which comprises a diffuser region (138). The diffuser region (138) is configured to reduce the axial velocity of air exiting the outlet (132) relative to air entering the diffuser portion (138) in use, wherein the outlet (132) is located such that air exiting the outlet (132) is directed substantially to the root portion (122) only of the rotor blades (120).
摘要:
An annular array of turning vanes 200 is provided in a duct 100 of a gas turbine engine 10. The annular array of turning vanes 200 comprises aerodynamic vanes 220 and strut-vanes 240. The strut-vanes 240 have greater chord length and extend further axially downstream than the aerodynamic vanes 220. The leading edge of the strut-vanes 240 is upstream of the trailing edge of the aerodynamic vanes 220. The strut-vanes provide flow turning. The space to chord ratio of the aerodynamic vanes that are closest to the suction surface of a strut-vane is higher than the space to chord ratio of aerodynamic vanes that are closest to a pressure surface of the strut-vane. The arrangement allows the duct 100 to be axially short.
摘要:
A gas turbine engine (10) having an axial flow direction (X) therethrough in use. The gas turbine engine (10) comprises one or more rotor stages each comprising at least one rotor blade (120) having a root portion (122). The gas turbine engine (10) comprises a shroud (126) located upstream of one or more of the rotor stages relative to the axial flow direction (X). The shroud (126) defines a through passageway (128) extending between an inlet (130) and an outlet (132) which comprises a diffuser region (138). The diffuser region (138) is configured to reduce the axial velocity of air exiting the outlet (132) relative to air entering the diffuser portion (138) in use, wherein the outlet (132) is located such that air exiting the outlet (132) is directed substantially to the root portion (122) only of the rotor blades (120).
摘要:
Die Erfindung bezieht sich auf eine Fluggasturbine mit einem Kerntriebwerk 10 und einem dieses umgebenden Nebenstromkanal 29, wobei das Kerntriebwerk 10 in seinem Einströmbereich einen Vorverdichter 30 umfasst, im Bereich dessen zumindest ein Entlastungskanal 31 zur Zuleitung einer Luftströmung von dem Vorverdichter 30 in den Nebenstromkanal 29 vorgesehen ist, sowie mit einer stromab eines Fans 12 im Nebenstromkanal 29 angeordneten Leitschaufelreihe 32, dadurch gekennzeichnet, dass ein Schaufelfuß 33 der Leitschaufel 32 als das Kerntriebwerk lagerndes Strukturelement ausgebildet ist und dass der Entlastungskanal 31 in dem Schaufelfuß 33 ausgebildet ist und stromab der Leitschaufel 32 in den Nebenstromkanal 29 mündet.
摘要:
Methods and systems for cooling airflow may comprise a gas turbine engine (100; 200) that may comprise an engine core (300), comprising a chamber (311), and/or a heat exchanger (320; 420). The chamber (311) may comprise a chamber outboard surface (312; 412) and/or a chamber interior (308; 408). The heat exchanger (320; 420) may be coupled to the chamber outboard surface (312; 412) and may comprise a heat exchanger base (423) and/or a cooling tube (321; 421). The cooling tube (321; 421) may be disposed inside the chamber interior (308; 408) and may comprise a tube entrance end (322; 422) coupled to the heat exchanger base (423), a tube exit end (326; 426) coupled to the heat exchanger base (423), and/or a tube body between the tube entrance end (322; 422) and the tube exit end (326; 426), the tube body encompassing a tube interior.
摘要:
An example method of cooling a compressor of a gas turbine includes, among other things, diverting a flow from a compressor, and directing the flow at the compressor in a direction, the direction having a circumferential component and an axial component.
摘要:
What is described is a system for pumping lubricant to a component of a gas turbine engine (20). The system includes a fan gear (200; 600) coupled to a fan shaft (98) of the gas turbine engine (20) and configured to rotate in a forward direction and in a reverse direction based at least partially on a direction of wind relative to a fan (42) of the gas turbine engine (20). The system also includes a first pump (206; 606) coupled to the fan gear (200; 600) and configured to pump lubricant to the component in response to the fan (42) rotating in the forward direction. The system also includes a second pump (208; 604) coupled to the fan gear (200; 600) and configured to pump lubricant to the component in response to the fan (42) rotating in the reverse direction.
摘要:
A modulated flow transfer system (144) includes an annular inducer (213) configured to accelerate the fluid flow in a substantially circumferential direction in a direction of rotation of the rotor (110). The system (144) further includes a first fluid flow supply including a compressor bleed connection (142), a feed manifold (206) formed of bendable tubing, and a feed header (202) extending between the compressor bleed connection (142) and the feed manifold (206). The feed header (202) includes a modulating valve (204) configured to control an amount of fluid flow into the feed manifold (206). The system (144) also includes a flow supply tube (210) that extends between the feed manifold (206) and the inducer (213) and is couplable to at least one of the plurality of first fluid flow inlet openings (214) through a sliding piston seal (216).
摘要:
A method of operating a propulsion system (14) includes powering an auxiliary fan (18) with a gas turbine engine (20), where the auxiliary fan (18) is along an auxiliary axis (F) and the gas turbine engine (20) is along an engine axis (F), the auxiliary axis (F) being parallel to the engine axis (A).
摘要:
A gas turbine engine (20) includes a fan section (22). A turbo-compressor section (24) is connected to the fan section (22) through a speed change mechanism (48).