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    INTAKE AIR BLEEDING DEVICE FOR SUPERSONIC PLANE
    1.
    发明专利
    INTAKE AIR BLEEDING DEVICE FOR SUPERSONIC PLANE 失效

    公开(公告)号：JPH07189737A

    公开(公告)日：1995-07-28

    申请号：JP33380293

    申请日：1993-12-27

    Applicant: NAT AEROSPACE LAB ,  HONAMI SHINJI ,  ISHIKAWAJIMA HARIMA HEAVY IND

    Inventor： SAKATA KIMIO ,  YANAGI RYOJI ,  MURAKAMI SATORU ,  SHINDO SHIGEMI ,  HONAMI SHINJI ,  SHIZAWA TAKAAKI ,  SAKAMOTO KAZUYUKI ,  SHIRAISHI KAZUO ,  KOMI JUNSUKE

    IPC: F02C7/04 ,  F02K7/10

    Abstract: PURPOSE:To reduce the nonuniformity of total pressure distribution and improve the total pressure recovery factor of a diffuser by setting a range of forming side wall air bleed holes, disposed at both side walls of a throat part so as to bleed air from the inner surface of the side walls, behind the vertical shock wave generating position of the throat part. CONSTITUTION:An air bleed hole 24 for a side wall is formed of plural air bleed holes SB1, SB2, SB3 in front and in the rear of the formed position of a throat air bleed clearance 8, and these air bleed holes are formed at the inner wall of a side wall 21. The respective air bleed holes SB1-SB3 are formed of small hole groups numerously opened in the inner wall of the side wall 21, over the whole height area, connected to an air bleed system outward of an air intake passage 4, and so set as to allow the presence of bleed air to be switched and the bleed air flow to be set in that block range. Interference between vertical shock waves S5 and a boundary layer growing at a corner part between the side wall 21 and the face of the cowl 6 is generated in the vicinity of a throat, but such three-dimensional interference can be suppressed by the throat side wall air bleed.

    STRUCTURE OF COOLING TURBINE BLADE
    2.
    发明专利
    STRUCTURE OF COOLING TURBINE BLADE 失效

    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.

    WELDING METHOD OF METALLIC MATERIAL
    4.
    发明专利
    WELDING METHOD OF METALLIC MATERIAL 失效

    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.

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