摘要:
L'invention a pour objet un dispositif d'atténuation d'ondes acoustiques formant la paroi d'un conduit ouvert, lesdites ondes acoustiques étant propagées par un flux d'air traversant ledit conduit, ledit dispositif comportant une structure (13) constituant un filtre acoustique, limitée par une première paroi ajourée formant la paroi interne (11) du conduit ladite première paroi présentant des perforations (15) faisant communiquer l'élément absorbant acoustique avec l'intérieur du conduit et par une seconde paroi pleine (12) formant la paroi externe du conduit. Le dispositif selon l'invention comporte en outre un jeu de canalisations (16) de transport de fluide caloporteur configurées et agencées vis-à-vis de la première paroi (11) du dispositif de façon à permettre un échange thermique, au travers de la première paroi, entre le fluide caloporteur et le flux d'air circulant dans le conduit.
摘要:
A compressor (100) for use in a gas turbine engine comprises a compressor rotor including blades (104) and a disc (102), with a bore (102B) defined radially inwardly of the disc (102). A high pressure air tap (107,108) includes a lower temperature tapped path and a higher temperature tapped path and a valve (111) for selectively delivering one of the lower temperature tapped path and the higher temperature tapped path into the bore (102B) of the disc (102). The valve (111) is operable to selectively block flow of either of the lower pressure and higher pressure tapped paths to the bore (102B) of the disc (102), with the disc (102) including holes (105) to allow air from compressor chambers to communicate with the bore (102B) of the disc (102).
摘要:
An airfoil includes an airfoil body having an internal cavity. A thermostatic valve is located at least partially within the internal cavity. The thermostatic valve is configured to passively control fluid flow into the internal cavity in response to a temperature within the internal cavity.
摘要:
A gas turbine engine includes a first zone and a second zone downstream from the first zone. A buffer system can communicate a buffer cooling air to at least the first zone. A bleed source can communicate a bleed air to the second zone.
摘要:
The invention relates to a flow guiding system for a rotary combustion engine, in particular an aircraft jet engine with a bypass region (20) positioned radially around a core region (10), with a flow scoop device (15) for guiding a first airflow (1) from the bypass region (20), with at least one flow guiding device (5) for decoupling the flow regime in a region containing a flammable fluid (40) from a flow regime in a region with tip clearance control (16) by at least partially guiding at least one airflow (2, 3) divided from the first airflow (1), a) a second airflow (2) directed into the region containing flammable fluid (40), and / or b) a third airflow (3) directed into a region away from the region containing flammable fluid (40). The invention also relates to a combustion engine with at least one flow guiding system.
摘要:
An example method of thermal energy exchange within a turbomachine includes heating a liquid using thermal energy from compressed air, injecting the liquid into a first portion of a turbomachine, and using the compressed air to cool a second portion of the turbomachine.
摘要:
An example method of thermal energy exchange within a turbomachine includes heating a liquid using thermal energy from compressed air, injecting the liquid into a first portion of a turbomachine, and using the compressed air to cool a second portion of the turbomachine.
摘要:
A gas turbine engine (10) comprises a compressor (14), a combustion chamber (15), an outer casing (20), an inner casing (22) and a cooling arrangement (24). The outer casing (20) surrounds the compressor (14) and the combustion chamber (15) and the combustion chamber (15) has turbine nozzle guide vanes (26). The compressor (14) has load carrying outlet guide vanes (28) connected to the outer casing (20) and the inner casing (22). The turbine nozzle guide vanes (26) connect the outer casing (20) and the inner casing (22). The cooling arrangement (24) comprises a cooling air duct (38) located between the compressor (14) and the combustion chamber (15). The compressor outlet guide vanes (28) carry at least one aerodynamic fairing (40). A support structure (42) supports the cooling air duct (38) from the inner casing (22) at two spaced positions and the support structure (42) forms a chamber (50) with the inner casing (22). The support structure (42) comprises at least one hollow duct (48) and each hollow duct (48) locates behind a respective one of the aerodynamic fairings (40).
摘要:
An example turbomachine assembly includes, among other things, a nose cone of a turbomachine. The nose cone provides an aperture that communicates air to an interior of the nose cone.