摘要:
A starter/generator system (100) for a gas turbine engine (10) is provided. The gas turbine engine includes a core gas turbine engine (13) and a low-pressure turbine (20) coupled to the core gas turbine engine. The starter/generator system includes a starter (102) coupled to the core gas turbine engine, and a generator (104) coupled to the low-pressure turbine.
摘要:
A gas turbine engine assembly (10) includes: at least one propelling gas turbine engine (11) including a fan (14), a core engine (13) downstream from the fan, and a plurality of extraction points (124,122,120); a modulating valve (100) coupled in flow communication to the propelling gas turbine engine; and an auxiliary engine (12) used for generating power. The auxiliary engine includes at least one turbine (44) and an inlet. The inlet is coupled in flow communication with the modulating valve, such that a portion of airflow (30) entering the propelling engine is extracted for use by the auxiliary engine and such that the modulating valve controls the flow of airflow (54) from the propelling engine to the auxiliary engine. The modulating valve is selectively operable to extract airflow from at least two of the plurality of extraction points.
摘要:
La présente invention porte sur un moteur à turbine à gaz comprenant un boîtier à engrenages AGB (12) relié mécaniquement à un arbre du moteur pour l'entraînement de machines auxiliaires et un démarreur (10, 10') à air monté sur le boîtier, les enceintes du démarreur et du boîtier étant en communication de telle façon que l'huile de lubrification du démarreur soit distribuée depuis le boîtier AGB,. Le moteur est caractérisé par le fait que l'enceinte à huile du démarreur (10, 10') est pressurisée par une source d'air, indépendante du boîtier AGB. Avantageusement l'air de pressurisation est prélevé depuis une enceinte de pressurisation d'un palier du moteur.
摘要:
A gearbox 104 for an auxiliary power unit (APU) 100 includes a front side defining a generator interface 120 configured to be coupled to a generator 108, the front side further defining an oil pump and fuel control component interface 176 configured to be coupled to an oil pump 112 and fuel control component 160, and a starter interface 122 configured to be coupled to a starter 122. The gearbox 104 further includes a back side on an opposite side to the front side and configured to house a gear train 128; a bottom side defining an oil tank interface 126 configured to be coupled to an oil tank 114; and a debris conduit 148 extending from the generator interface 120 to the oil tank interface 126.
摘要:
A shroud (126) is provided for separating an air turbine starter housing from a turbine wheel (124). The shroud (126) comprises a ring (136) and a bumper (138). The ring (136) is configured to be disposed between the turbine wheel (124) and the housing and has an outer peripheral surface and an inner peripheral surface (143) that defines a flow channel (144). The bumper (138) is coupled to and extends radially inwardly from the ring inner peripheral surface (143) and defines a bumper section of the ring flow channel (144). At least a portion of the bumper section has a cross-sectional flow area that is less than another cross sectional flow area of the ring flow channel(144).
摘要:
A rotatably supporting device for turbocharger formed so as to have an excellent durability while suppressing a rise in cost, wherein the contact angle of a second ball bearing (5) is set to 5 to 25°so as to increase the durability of the second ball bearing (5) on a turbine side having severer lubricating requirements among first and second ball bearings (4, 5) supporting a rotating shaft (3) having an impeller and a turbine fixed to both ends thereof, and a nitride layer is formed on at least one of a second inner ring raceway track (12) provided on the outer peripheral surface of a second inner ring (13) and the rolling surfaces of the second balls (14, 14) among the members forming the second ball bearing (5).
摘要:
An favourable stationary roller shaft of a gear assembly for an air turbine starter is provided. The air turbine starter may be used to start a gas turbine engine, such as may be found in aircraft, ships and military vehicles. The stationary roller shaft is formed of a material having a hardness of at least 66 Rockwell C and having a low inclusion content rating, thereby providing improved wear and/or fatigue properties.