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    • 3. 发明专利
    • Variable exhaust nozzle of jet engine
    • 喷气发动机可变排气喷嘴
    • JP2013019330A
    • 2013-01-31
    • JP2011153582
    • 2011-07-12
    • Ihi Corp株式会社Ihi
    • OBA YOSHINORIOISHI TSUTOMUTANAKA NOZOMIMATSUMOTO YUTA
    • F02K1/12F02K1/10F02K1/30
    • PROBLEM TO BE SOLVED: To provide a variable exhaust nozzle of a jet engine that has a simple configuration and reliably decreases an infrared radiation intensity level.SOLUTION: This variable exhaust nozzle includes a plurality of seals 10 that are annularly arranged to constitute an exhaust port 2, a plurality of flaps 20 that are annularly arranged outside the seals 10 in the radial direction of the exhaust port 2 and positioned between adjacent seals 10, a plurality of fairing members 31 that are annularly arranged outside the plurality of flaps 20 in the radial direction of the exhaust port 2 to cover the outer surfaces of the plurality of flaps 20 and seals 10. Notches 25 are disposed at the tips of the flaps 20. At the tips of the fairing members 31, cutouts 34 for exposing the notches 25 to the outside in the radial direction of the exhaust port 2 are disposed at positions facing the notches 25.
    • 要解决的问题:提供一种具有简单构造并可靠地降低红外辐射强度水平的喷气发动机的可变排气喷嘴。 解决方案:该可变排气喷嘴包括多个密封件10,它们环形地设置成构成排气口2;多个翼片20,其在排气口2的径向方向上环形地设置在密封件10的外部, 在相邻的密封件10之间,在排气口2的径向上环形地设置在多个翼片20的外侧的多个整流罩31,以覆盖多个翼片20和密封件10的外表面。槽口25设置在 翼片20的顶端。在整流罩构件31的顶端处,将切口34在排气口2的径向方向上露出到外侧的切口34设置在与切口25相对的位置。 C)2013,JPO&INPIT
    • 4. 发明专利
    • EXTENSION SECTION HAVING DISCONTINUOUS CURVATURE FOR ROCKET ENGINE
    • JPS6441651A
    • 1989-02-13
    • JP18145288
    • 1988-07-20
    • EUROP PROPULSION
    • ERITSUKU HERUMANTO
    • F02K9/44F02K1/30F02K9/82F02K9/97
    • PURPOSE: To make it possible to inject gas at little loss by constructing a diverging portion which consists of a fixing portion starting from the nozzle throat part and a down-stream portion to be connected in the join zone and providing the join zone with a controlled injection device which injects an additional jet of gas into the diverging portion. CONSTITUTION: The diverging portion 10 for a rocket engine shown in a solid line (the conventional diverging portion 20 is shown in a broken line) starts from a nozzle throat part 13 and has a first length part (fixing portion) 11 having a curvature in the axial profile section to be constructed from the first circumferential surface. The diverging portion 10 further has a second length (down-stream portion) 12 having a curvature in the axial profile section to be constructed from the second circumferential surface on the nozzle axis. Each of these lengths 11, 12 forms a discontinuous curvature connected at the joint zone 16. Outside the diverging portion 10 in the vicinity of the join zone 16, a controlled injection device 100 is disposed such that an additional jet of gas can be injected in the direction of the main flow of the gas 31 ejected by the nozzle.
    • 6. 发明专利
    • PASSAGE CLOSING GEAR AND ITS SEALING STRUCTURE
    • JPH10281003A
    • 1998-10-20
    • JP8782197
    • 1997-04-07
    • ISHIKAWAJIMA HARIMA HEAVY IND
    • UDO TOMOICHIRO
    • F02K1/30F02K1/38F02K7/16
    • PROBLEM TO BE SOLVED: To provide a passage closing gear and its sealing structure which can be used in a high temperature part and are capable of adapting to large heat distortion. SOLUTION: The gear is equipped with a flap 12 which opens or closes an opening 5 provided on a passage, and the flap 12 consists of a sealing plate 14 which contacts the opening 5 and seals a seal area 5a, and a support plate 16 which is driven by an opening/closing gear 20. The sealing plate 14 is mounted with a space left away from and approximately in parallel to the support plate 16 while allowing the free movement of the sealing plate 14. Further, leaf springs 18 are sandwiched between the sealing plate 14 and the support plate 16 so that the sealing plate 14 is always pushed in direction to move away from the support plate 16. The force of the leaf springs 18 is preset to a value which is larger than the operating force required to seal the opening 5 when closing the passage, so even if the clearance between the flap 12 and the opening 5 varies, the elastic force of the leaf springs 18 causes the clearance between the sealing plate 14 and the support plate 16 to change, and the sealing plate 14 and the opening 5 are always kept in firmly joined condition and the sealable property is maintained.
    • 8. 发明专利
    • JET ENGINE
    • JPH06159136A
    • 1994-06-07
    • JP17033993
    • 1993-07-09
    • DEUTSCHE AEROSPACE
    • YOAHIMU KURECHIYUMAARU
    • F02K1/08F02K1/09F02K1/30F02K1/52F02K7/16
    • PURPOSE: To be adapted to the very different operation conditions and obtain a simple structure and high propelling efficiency of a hypersonic compound engine by arranging a particular propelling nozzle divergent lengthening part at an outlet end of a nozzle outer wall. CONSTITUTION: A propelling nozzle 16 contains a propelling nozzle divergent lengthening part 48 which is axially movable for the outlet-side expansion of a hot gas flow duct 56. In the moved-out position, the lengthening part 48 connects to a divergent outlet end 54 of a nozzle outer wall 42 fixed to an engine, and in the moved-in condition, forms together with the nozzle outer wall 42 an air outlet duct 58 which encloses the fixed nozzle wall end. Thus, in the low flying speed range, a secondary air injection that is uniform along the whole outer circumference of the fixed nozzle takes place through the air outlet duct 58. A mushroom-shaped central body 44 which can be adjusted axially is arranged in the propelling nozzle 16.
    • 9. 发明专利
    • THRUST DEFLECTING NOZZLE
    • JPH05133274A
    • 1993-05-28
    • JP31838491
    • 1991-11-06
    • ISHIKAWAJIMA HARIMA HEAVY IND
    • FUJIMURA TETSUJIYAMAMOTO MASAHIKOUDAGAWA YUTAKAWATANABE TADAAKI
    • F02K1/30
    • PURPOSE:To simplify the structure in a thrust deflecting nozzle for use in aircraft by controlling the opening and closing of plural air intake valves provided on the front end part of a nozzle cover in the circumferential direction, thereby regulating the direction of a gas flow jetted from the rear side end part of the thrust deflecting nozzle. CONSTITUTION:A large diameter nozzle cover 6 is coaxially installed to a nearly cylindrical nozzle body l, the cross-section of the passage of which is gradually reduced from the longitudinal intermediate part to the rear side end part, and plural air intake valves 9a-9d are provided on the outer peripheral surface near the front side end part of the nozzle cover 6 up and down, and right and left at nearly equal intervals in the circumferential direction. For example, when only the air intake valve 9b is opened when the respective air intake valves 9a-9d are closed during usual flight to al-low a subsonic gas flow to flow from the front side in the nozzle body 1 toward the rear side, the peripheral air E flows from the air intake valve 9b into a space 8 to throttle the gas flow by the ejector effect to allow the gas flow S to jet so that the gas flow is deflected from the rear side end part of the nozzle cover 6 downward.
    • 10. 发明专利
    • Method and apparatus for variable exhaust nozzle exit area
    • 可变排气喷嘴出口区域的方法和装置
    • JP2012127349A
    • 2012-07-05
    • JP2011271964
    • 2011-12-13
    • Boeing Co:Theザ・ボーイング・カンパニーThe Boeing Company
    • WINKLER CHAD MDORGAN ANDREW JWERNER ERIC L
    • F02K1/30F02K1/06
    • F02K1/30
    • PROBLEM TO BE SOLVED: To optimize thrust through adjusting engine performance by controlling an exit area of an exhaust nozzle for jet engine.SOLUTION: A nozzle effective exit area control system is created with a convergent-divergent nozzle with a divergent portion of the nozzle having a wall at a predetermined angle of at least 12° from a freestream direction. Disturbance generators are located substantially symmetrically oppositely on the wall to induce flow separation from the wall with the predetermined wall angle inducing flow separation to extend upstream from each disturbance generator to a throat of the nozzle and pressurizing the wall and reducing the effective area of the jet flow at the nozzle exit.
    • 要解决的问题:通过控制喷气发动机的排气喷嘴的出口面积来调节发动机性能来优化推力。 解决方案:喷嘴有效的出口区域控制系统产生具有会聚扩散喷嘴,喷嘴的发散部分具有与自由流方向成至少12°的预定角度的壁。 干扰发生器基本上对称地位于壁上以引起与壁的流动分离,其中预定的壁角度引起流动分离,以从每个扰动发生器的上游延伸到喷嘴的喉部并且加压壁并减小射流的有效面积 在喷嘴出口流动。 版权所有(C)2012,JPO&INPIT