摘要:
A three-spool turbofan engine (20) has a variable fan nozzle (35). The fan blades have a peak tip radius RT and an inboard leading edge radius RH at an inboard boundary of the flowpath. A ratio of RH to RT is less than about 0.40.
摘要:
The main subject matter of the invention is a system (1) for supplying pressurised air installed in an aircraft turbine engine, configured to supply pressurisation air to a portion of the aircraft for using compressed air from pressurisation air collected from a portion for collecting compressed air (12), characterised in that it comprises a collection port (30) formed on a casing (12c) of the compressed air collection portion (12), a collection member (32) coupled to the collection port (30), a through port (38) of the collection member (32) formed on a casing (39) of a compartment (ZC) of the turbine engine, said casing (39) being subjected to small movements relative to the casing (12c) of the compressed air portion (12), the collection member (32) crossing the through port (38) with a freedom of movement relative to the latter during said small movements, a high-pressure space (33) crossed by the collection member (32), located between the casing (12c) of the compressed air collection portion (12) and the casing (39) of the compartment (ZC), and including pressurised air at a pressure higher than that of the collected pressurisation air, the system (1) for supplying pressurised air also including sealing means (2) located substantially between the casing (12c) of the compressed air collection portion (12) and the casing (39) of the compartment (ZC) in order to form a substantially sealed separation between the high-pressure space (33) and a free space (40) communicating with the compartment (ZC) and provided around the collection member (32), in order to prevent the entry of pressurised air from the high-pressure space (33) into the collection member (32) in the event of the latter breaking.
摘要:
Die Erfindung betrifft ein Verfahren zur Montage einer Turbomaschine (TCO), wobei die Turbomaschine (TCO) ein Außengehäuse (OC) aufweist, wobei die Turbomaschine (TCO) ein Innenteil (IP) zur Anordnung in dem Außengehäuse (OC) aufweist, wobei das Außengehäuse (OC) eine sich entlang einer Achse (X) erstreckende Teilfuge (SP) aufweist, derart, dass das Außengehäuse (OC) in ein Außengehäuseoberteil (UP) und ein Außengehäuseunterteil (LP) zerteilbar ausgebildet ist, wobei das Innenteil (IP) im Betrieb zur Rotation um die Achse (X) vorgesehene Rotorteile (RE) und statische Bauteile (SE) umfasst, wobei das Innenteil (IP) mindestens eine sich in Umfangsrichtung erstreckende Dichtung (SL) zur Abdichtung eines Spaltes (GP) zwischen dem Innenteil (IP) und einer Dichtfläche (SLS) des Außengehäuses (OC) aufweist, wobei das Verfahren die Schritte umfasst: a) Bereitstellen des Außengehäuseunterteils (LP), b) Einsetzen des Innenteils (IP) in das Außengehäuseunterteil (LP) in einer ersten Axialposition (AX1), c) Zusammenfügen des Außengehäuseunterteils (LP) und des Außengehäuseoberteils (UP), d) axiales Verschieben des Innenteils (IP) in dem Außengehäuse (OC) relativ zu dem Außengehäuse (OC) von der ersten Axialposition (AX1) in eine axiale Endposition (AX2), so dass die Dichtung (SL) in Kontakt tritt mit der Dichtfläche (SLS). Mittels des Verfahrens werden Dichtungs- bzw. Montageprobleme vermieden.
摘要:
The present disclosure relates generally to a sliding seal between two components. At least one of the two components includes a ramped surface on which the sliding seal slides during relative movement between the two components.
摘要:
A gas turbine engine is provided having a combustion section with a liner (102, 108) extending between a forward end (106, 112) and an aft end (104, 110). A structural member (132, 136, 140, 182) is positioned in or around at least a portion of the combustion section. Additionally, a piston ring holder (150, 166) is provided attached to the structural member (132, 136, 140, 182) at a first end (154, 170) and positioned proximate to the aft end (104, 110) of the liner at a second end (156, 172). The piston ring holder (150, 166) is a bimetallic member including a first portion formed of a first material and a second portion formed of a second material. A coefficient of thermal expansion of the first material is different than a coefficient of thermal expansion of the second material.
摘要:
An assembly is provided that includes a shaft, a bearing, a stator seal element, a rotor seal element and a shield. The shaft extends along an axis. The bearing supports the shaft and receives lubrication fluid. The stator seal element circumscribes the shaft. The rotor seal element is mounted on the shaft axially between the bearing and the stator seal element. The rotor seal element forms a seal with the stator seal element. The shield substantially prevents the lubrication fluid from traveling axially away from the bearing onto the rotor seal element.