Abstract:
PROBLEM TO BE SOLVED: To increase efficiency by compensating for a reduction in the cross section of the flow passage of a compressor. SOLUTION: A turbine engine comprises a rotor stack 32 having vane stages 38A to I and blade disks 34A to I. The disks support the blade stages 36A to I. Spacers 62A to H connect the adjacent disks 34A to I in pairs to each other to transmit a compressive force. Recessed parts of the spacers 62B to H compensate for a reduction in the cross section of the flow passage. The spacers 62 exclude loss heat transfer during air recirculation by cavities between the outer disks. Joints 66C to H on the radial inner side of the spacers 62C to H comprise a first annular structural part extending from the forward disks to the rear and a second annular structural part extending from the backward disks to the front, and transmit torque. An anti-vortex tube 100 between the disks 34G and 34H is fitted to a joint 66G, leads air stream on the radial inner side to a spacer 67G, maintains a specified disk temperature characteristic, and controls a thermo/mechanical stress. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
An integrally bladed rotor has an outer rim with a plurality of blades extending radially outwardly of the outer rim. A plurality of channels are formed radially inwardly of the outer rim. A discontinuity formed at a radially outer surface of the outer rim includes a first thin slot at a radially outer face of the outer rim with an enlarged seal holding area. A second thin slot is positioned radially inwardly of the seal holding. The first and second thin slots are thinner circumferentially than the enlarged seal holding area. A seal is inserted into the seal holding area. The seal does not extend into the first and second thin slots, nor into the channels.
Abstract:
A fan-turbine rotor assembly includes a diffuser section (114) which turns and diffuses the airflow from a radial core airflow passage (80) toward an axial airflow direction. Diffuser flow passages communicate with the diffuser passages (144) at a location which reduces separation of the airflow as the airflow is turned from the radial core airflow passage (80) toward an axial airflow direction through airflow aspiration at the potentially turbulent locations.
Abstract:
A fan-turbine rotor assembly (24) includes one or more turbine ring rotors (32). Each turbine ring rotor is cast as a single integral annular ring. By forming the turbine as one or more rings, leakage between adjacent blade platforms is minimized which increases engine efficiency. Assembly of the turbine ring rotors to the diffuser ring (114) includes axial installation and radial locking of each turbine ring rotor.
Abstract:
A tip turbine engine assembly includes an integral engine outer case (8) located radially outward from a fan assembly (30). The integral outer case (8) includes a rear portion (124) and a forward portion (128) with an arcuate portion (130) that curves radially inwardly to form a compartment. An annular combustor is housed and mounted in the compartment (132). Fan inlet guide vanes (22) are integrally formed with the arcuate portion (130) to form the integral case portion. The rear portion, forward portion, and fan inlet guide vanes are integrally formed in a casting process.
Abstract:
A fan-turbine rotor assembly (24) includes a diffuser (114) mountable to the outer periphery of a multitude of hollow fan blade sections (72) to provide structural support to the outer tips of the fan blade sections and to turn and diffuse the airflow from the radial core airflow passage toward an axial airflow direction. The diffuser includes a fan blade tip shroud inner portion (136) which forms a planar ring about the multiple of fan blade sections. Diffuser support rings (115a, 115b) are mounted to the fan blade tip shroud to further share the radial load applied to the fan blade sections by the blade mounted diffuser and annular turbine (32).
Abstract:
A fan-turbine rotor assembly for a tip turbine engine includes an outer periphery scalloped by a multitude of elongated openings which define an inducer receipt section to receive an inducer section and a hollow fan blade section. Each fan blade section includes a turbine section which extends from a diffuser section.
Abstract:
A turbine engine includes a compressor section, a combustor arranged in fluid-receiving communication with the compressor section, a turbine section arranged in fluid-receiving communication with the combustor and a gearbox assembly coupled to be driven by the turbine section. The gearbox assembly is located at an axial position that is aft of the compressor section.