公开(公告)号：DE69930916D1

公开(公告)日：2006-05-24

申请号：DE69930916

申请日：1999-12-21

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TABBITA MARTIN G ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH O

IPC: F01D5/18 ,  F02C7/00

Abstract: A hollow airfoil 16 is provided which includes a body having an external wall 22 and an internal cavity 20. The external wall 22 includes a suction side portion 28 and a pressure side portion 30. The portions extend chordwise between a leading edge 24 and a trailing edge 32 and spanwise between an inner radial surface 14 and an outer radial surface 18. A stagnation line 40 extends along the leading edge 24. A plurality of cooling apertures 26, are disposed spanwise along the leading edge 14. In one embodiment the apertures 26 coincide with the stagnation line 40 and extend through the external wall 22 along a helical path. The apertures 26 are alternately directed towards the suction side portion 28 and the pressure side portions 30 of the airfoil 16. The apertures 26 may open into a leading edge trench 34. In another embodiment (FIGS. 10 and 11) the apertures 26 are disposed on either side of the stagnation line 40.

公开(公告)号：DE69828757T2

公开(公告)日：2005-07-14

申请号：DE69828757

申请日：1998-12-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TABBITA MARTIN G ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH ,  AUXIER THOMAS A

IPC: F01D5/18

Abstract: A hollow airfoil 10 is provided with a trench 18 which is aligned with a stagnation line 42 extending along the leading edge 26. Cooling air apertures 38 extend between an inner cavity of the airfoil and the trench 18 to supply cooling air thereto.

公开(公告)号：DE69520778T2

公开(公告)日：2001-08-09

申请号：DE69520778

申请日：1995-11-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DOWNS JAMES P ,  RUANO EDUARDO

IPC: F16L59/02 ,  C23C14/08 ,  C23C14/16 ,  C23C28/00 ,  F01D5/28 ,  F01D5/00

Abstract: Layers (14, 16) of thermally conductive material are applied to an object (10) such that second layers (16) of thermally conductive material are distributed amongst first layers (14) of thermally conductive material. A first layer (14) of thermally conductive material is less thermally conductive than a second layer (16) at any particular temperature. Thermal energy travelling through the layers to the object is impeded by the lower thermally conductive of the first layers, and substantially dispersed in a lateral direction by the higher thermally conductive of the second layers, thereby minimizing any thermal gradients that might otherwise exist within the object.

公开(公告)号：DE924382T1

公开(公告)日：2000-03-02

申请号：DE98309883

申请日：1998-12-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： TABBITA MARTIN G ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH ,  AUXIER THOMAS A

IPC: F01D5/18

Abstract: A hollow airfoil 10 is provided with a trench 18 which is aligned with a stagnation line 42 extending along the leading edge 26. Cooling air apertures 38 extend between an inner cavity of the airfoil and the trench 18 to supply cooling air thereto.

公开(公告)号：DE60038086T2

公开(公告)日：2009-03-05

申请号：DE60038086

申请日：2000-11-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SOECHTING FRIEDRICH O ,  AUXIER THOMAS A ,  KVASNAK WILLIAM A ,  DOWNS JAMES P ,  CALHOUN WILLIAM H ,  HAYES DOUGLAS A

IPC: F01D5/18 ,  F01D9/02 ,  F23R3/00

公开(公告)号：DE60038086D1

公开(公告)日：2008-04-03

申请号：DE60038086

申请日：2000-11-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SOECHTING FRIEDRICH O ,  AUXIER THOMAS A ,  KVASNAK WILLIAM A ,  DOWNS JAMES P ,  CALHOUN WILLIAM H ,  HAYES DOUGLAS A

IPC: F01D5/18 ,  F01D9/02 ,  F23R3/00

公开(公告)号：DE60025074D1

公开(公告)日：2006-02-02

申请号：DE60025074

申请日：2000-06-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： AUXIER THOMAS A ,  KVASNAK WILLIAM S ,  DOWNS JAMES P ,  SOECHTING FRIEDRICH O ,  CALHOUN WILLIAM H ,  HAYES DOUGLAS A

IPC: F01D5/18 ,  F01D9/02

Abstract: A method and apparatus for cooling a wall within a gas turbine engine is provided which comprises the steps of: (1) providing a wall having an internal surface and an external surface; (2) providing a cooling microcircuit within the wall that has a passage for cooling air that extends between the internal surface and the external surface; and (3) increasing heat transfer from the wall to a fluid flow within the passage by increasing the average heat transfer coefficient per unit flow within the microcircuit. According to one aspect, the present invention method and apparatus can be tuned to substantially match the thermal profile of the wall at hand.