公开(公告)号：JPS56148601A

公开(公告)日：1981-11-18

申请号：JP5202080

申请日：1980-04-18

Applicant: NAT AEROSPACE LAB

Inventor： TAKAHARA KITAO ,  YOSHIDA TOYOAKI ,  SASAKI MAKOTO ,  SAKATA KIMIO

IPC: F01D5/18

Abstract: PURPOSE:To vary the cooling effect of a cooling turbine blade in a direction of span thereof by joining a plurality of gas turbine blade elements one upon another and to improve the cooling performance of the turbine blade by forming a film cooling passage in a curved form. CONSTITUTION:Cooling turbine blade elements 11, 12, 13 are combined to form impinge passages 2 and film cooling passages 4. The cooling effect can be varied in a direction of span of the cooling turbine blade by inserting those elements having no cooling passages 2, 4 in serveral locations in the direction of span or by changing dimensions of cooling passages of the cooling turbine blade elements 11, 12, 13. Each film cooling passage can be formed into a curved form by seaming the cooling turbine blade elements by diffusion, thereby improving the cooling performance.

公开(公告)号：JPS5130864A

公开(公告)日：1976-03-16

申请号：JP10344674

申请日：1974-09-10

Applicant: NAT AEROSPACE LAB ,  TANIGUCHI ZENBEE

Inventor： TAKAHARA KITAO ,  YOSHIDA TOYOAKI ,  TANIGUCHI ZENBEE

IPC: B29B13/00 ,  B29C33/00 ,  B29C33/38 ,  B29C33/44 ,  B29C33/76

公开(公告)号：JPS5666390A

公开(公告)日：1981-06-04

申请号：JP14079979

申请日：1979-10-31

Applicant: NAT AEROSPACE LAB

Inventor： MATSUKI MASAKATSU ,  TAKAHARA KITAO ,  YOSHIDA TOYOAKI ,  SAKATA KIMIO

IPC: B23K20/00 ,  B23K20/16

Abstract: PURPOSE:To practice a pressure welding with superior strength, by applying fine- grained powders of specific particle size as an inserting material between contacting surfaces of metallic materials and heating up all these materials to a temperature lower than a solid phase line of metallic materials. CONSTITUTION:The particle size of fine-grained metallic powders is 1mum-1mm. and the surface area of grained powders is about 10-100cm /g. The sintering temperature of metallic powders is a little lower than that of the lump of same metal. Both contacting surfaces of metallic materials are finished by grinding and washed and a thin layer of the powdered mixture containing fine-grained metallic powders or fine-grained powders is applied on the contacting surfaces. Then, these materials are kept combined by pressure force so that both contacting surfaces be closely touched to each other. Sintering and diffusing actions will proceed when all materials are kept heated in a vacuum or an inert gas atmosphere at a temperature not higher than each solid phase line of the mother materials and inserting material, but higher than a sintering temperature of the fine-grained powder material. The proper grading of the inserting material is about 0.01-1.0mg/1cm . Thus, the welded zone between metals is excellent in its strength, oxidation resistance, corrosion resistance and heat impact resistance and a residual strain can be minimized.

公开(公告)号：JP2002349203A

公开(公告)日：2002-12-04

申请号：JP2001155459

申请日：2001-05-24

Applicant: NAT INST FOR MATERIALS SCIENCE ,  NAT AEROSPACE LAB ,  TOSHIBA CORP

Inventor： HARADA KOJI ,  YOKOGAWA TADAHARU ,  OTAKA SATOKO ,  YOSHIDA TOYOAKI ,  OGAWA AKINORI ,  NOZAKI OSAMU ,  SAEKI YUSHI

IPC: F01D5/18

Abstract: PROBLEM TO BE SOLVED: To provide a virtual turbine calculation method capable of reducing calculation time, continuously and consistently performing blade aerodynamic calculation, blade strength calculation and blade cooling calculation. SOLUTION: In this virtual turbine calculation method, a heat balance is created based on inputted data and information (Step ST2), blade aerodynamic calculation is performed by using data from the heat balance (Step ST3), blade strength is calculated based on a blade shape determined by the blade aerodynamic calculation and material components (Step ST4), blade cooling calculation is performed (Step ST5), and then gas turbine performance and turbine blade specifications are defined (Step ST6).