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    GAS TURBINE ENGINE
    72.
    发明专利
    GAS TURBINE ENGINE 失效

    公开(公告)号：JP2000186575A

    公开(公告)日：2000-07-04

    申请号：JP32057699

    申请日：1999-11-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SNYDER RYAN K ,  GIRGENTI ALEXANDER P ,  KEVIN G VAN DUNN ,  TIZIANI PETER C ,  AVIS THOMAS B ,  PORTELINHA ANTONIO J

    IPC: F02C7/32

    Abstract: PROBLEM TO BE SOLVED: To minimize the damage of a gear box housing and an auxiliary machine in a rotor unbalance state like the fan blade loss state. SOLUTION: A mounting part 60 to mount an auxiliary machine 50 on a gear box comprises a mounting plate 62 connected to the auxiliary machine 50; links 64 and 66 to connect a first end part to the mounting plate 62 through a grommet 74 having elasticity, and a bush; brackets 68 and 70 to interconnect the links 64 and 66 and an engine case. In a normal engine working state, the auxiliary machine 50 is insulated in vibration from the engine case. In a high rotor unbalance state like during a loss of a fan blade, the grommet 74 being an elastic member is squeezed, the auxiliary machine 50 is coupled to an engine case, a load on a connection part between the gear box and the auxiliary machine is minimized, and damage due to a rotor unbalance load is minimized.

    GAS TURBINE ENGINE AND SEAL PLATE USED THEREIN
    73.
    发明专利
    GAS TURBINE ENGINE AND SEAL PLATE USED THEREIN 失效

    公开(公告)号：JP2000186573A

    公开(公告)日：2000-07-04

    申请号：JP36705999

    申请日：1999-12-24

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： STANLEY K KOVARSKI ,  DONALD J KOWALSKI ,  COLIN D CRAIG

    IPC: F02C7/28 ,  F01D11/00 ,  F16J15/44

    Abstract: PROBLEM TO BE SOLVED: To provide an increased life for the seal of a gas turbine engine and increase effectiveness and to balance lowering of a pressure between seal stages. SOLUTION: A plurality of seal stages 50 are provided to minimize leakage of high pressure air from a high pressure cavity 84 to a low pressure cavity 80. The seal stage 50 comprises an upper stream seal stage 86 adjoining the high pressure cavity 84; and a downstream seal stage 90 adjoining the low pressure cavity 80. Each seal stage comprises seal plates 94 and 100; and at least one of seals 110 and 108. The downstream seal plate 100 contains a plurality of bleed holes 136 to regulate an air amount and balances pressure lowering between seal stages. By substantially equalizing pressure lowering between the seal stages, wear of the downstream seal 108 is decreased and an effective life and effectiveness are increased.

    HOLLOW AIR FOIL
    75.
    发明专利
    HOLLOW AIR FOIL 失效

    公开(公告)号：JP2000186504A

    公开(公告)日：2000-07-04

    申请号：JP36051599

    申请日：1999-12-20

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： TABBITA MARTIN G ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH O ,  THOMAS A OUKIYAA ,  STEINBAUER JR FREDERICK

    IPC: F02C7/00 ,  F01D5/18

    Abstract: PROBLEM TO BE SOLVED: To form a uniform and stable cooling air film in the downstream of the front edge on both sides of an air foil by expanding the space between adjacent openings to reduce a high stress area, eliminating uncooled areas in the individual cooling points and between them, and eliminating uncooled areas in the middle of the cooling opening and on its downstream. SOLUTION: A tubine blade 10 of a gas turbine engine has a root part 12, a platform 14, an air foil 16 and a blade tip 18. The air foil 16 has one, two or more inner cavities surrounded with an outer wall 22, and at least one of them is located in the vicinity of the front edge 24 of the air foil 16 and plural cooling openings 26. The cooling openings 26 are arranged along the front edge 24 to provide a passage for allowing cooling air to pass through the outer wall 22. Plural first and second openings are provided and respectively directed toward the suction side part 28 and the pressure side part 30. The flow of cooling air crosses the front edge 24 to perform suitable cooling.

    GEARBOX LOCATOR
    76.
    发明专利
    GEARBOX LOCATOR 失效

    公开(公告)号：JP2000179358A

    公开(公告)日：2000-06-27

    申请号：JP32057599

    申请日：1999-11-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： KEVIN G VAN DUNN

    IPC: F02C7/36 ,  F01D21/04 ,  F02C7/32

    Abstract: PROBLEM TO BE SOLVED: To minimize damage to a gearbox and accessories in a high rotor- unbalance state such as a state of fan blade loss. SOLUTION: A locator 60 which attaches a gearbox 40 to an engine case 22 comprises an fitting plate 62 having a first stub shaft 66, and a second sub shaft 70. The second stub shaft 70 has a column 84 retained to a chamber 74 via an elastomer 76, and a bottom wall 80 of the chamber 74 has a thickness such that it breaks at a predetermined load. In a high rotor-unbalance state such as a state of fan blade loss, the wall 80 breaks to partially separate the gearbox 40 from the engine case 22, whereby damage resulting from a rotor- unbalance load is minimized.

    FITTING TOOL FOR HOLDING BLANK MEMBER AND FITTING METHOD FOR BLANK MEMBER
    77.
    发明专利
    FITTING TOOL FOR HOLDING BLANK MEMBER AND FITTING METHOD FOR BLANK MEMBER 失效

    公开(公告)号：JP2000176766A

    公开(公告)日：2000-06-27

    申请号：JP35876298

    申请日：1998-12-17

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： JAMES P DYUIYAA

    IPC: B23Q3/06

    Abstract: PROBLEM TO BE SOLVED: To fix a blank member having multiple locators with small force by providing a U-shaped base section on a fitting tool having at least two separated locators, and providing a clamping mechanism matched with one locator and applying force to the other locator. SOLUTION: A U-shaped base section 92 having a first end wall 94 position- adjustably against a second end wall 96 is provided on a fitting tool 91, for holding a blank member 80 having multiple locators 82, 84, 86 in a turbine during machining. An upper section 105 supporting a clamping mechanism including an actuator 109 and a sleeve 110 is integrally formed on the first end wall 94. A lower face 115 having horizontal slots 116, 117 for positioning the fitting tool 91 to a machine tool is formed on the base section 92. A contact section 120 is pivotally fitted to the second end wall 96, a wedge-shaped projection 121 converging toward an edge 126 is formed on the contact section 120, and the blank member 80 can be held by the projection 121.

    METHOD OF PRODUCING THRUST CHAMBER FROM DEFORMED TUBE BANK
    80.
    发明专利
    METHOD OF PRODUCING THRUST CHAMBER FROM DEFORMED TUBE BANK 失效

    公开(公告)号：JP2000158240A

    公开(公告)日：2000-06-13

    申请号：JP33606899

    申请日：1999-11-26

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： LOUIS W CORT ,  THOMAS R HERNACKI ,  MICHAEL R MORTON ,  RICHARD L ROSE

    IPC: F02K9/00 ,  B23P6/00 ,  B23P15/00 ,  F02K9/64

    Abstract: PROBLEM TO BE SOLVED: To produce a rocket thrust chamber from a tube bank where the joined parts between two adjacent tubes are discontinuous and forms gaps. SOLUTION: Filler is filled in a gap between adjacent two pipes 16 to confine a patch 36, and then the tube bank and the patch 36 are heated to a conditioning temperature which is maintained until particles of the filler are sintered while a binder in the blocking material is evaporated. Then, melted metal is thermally sprayed onto the tube bank and the outer shells of the tube bank until the outer shells 26 of the pipes are coated therewith by a predetermined thickness. Thereafter, the metal having the predetermined thickness is machined into a structural jacket having predetermined dimensions.

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