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    • 56. 发明申请
    • Powder propellant-based space propulsion device
    • 粉末推进剂空间推进装置
    • US20070044450A1
    • 2007-03-01
    • US11431452
    • 2006-05-09
    • Hitoshi Kuninaka
    • Hitoshi Kuninaka
    • F02K9/68
    • B64G1/406B64G1/403F03H99/00
    • Disclosed is a powder propellant-based space propulsion device using a powder propellant having high density and excellent handleability. The powder propellant-based space propulsion device comprises a powder-propellant storage container for storing a powder propellant, a powder-propellant attracting surface for attracting the powder propellant thereto through an opening of the powder-propellant storage container and attractively holding the attracted powder propellant thereon, powder-propellant transfer means for transferring the held powder propellant to a release position for releasing the powder propellant, and propulsive-energy supply means for energizing the transferred powder propellant to release the powder propellant from the powder-propellant attracting surface, toward a downstream side thereof as a propulsive jet, while accelerating the powder propellant in a direction approximately perpendicular to the powder-propellant attracting surface at said release position. The powder-propellant transfer means is designed to move the powder-propellant attracting surface in such a manner that a powder-propellant holding area of the powder-propellant attracting surface is returned to a position adjacent to the opening of the powder-propellant storage container in a repetitive manner.
    • 公开了使用具有高密度和优异的可操作性的粉末​​推进剂的基于粉末推进剂的空间推进装置。 基于粉末推进剂的空间推进装置包括用于储存粉末推进剂的粉末推进剂储存容器,用于通过粉末推进剂储存容器的开口吸引粉末推进剂的粉末推进剂吸附表面并且吸引地保持吸引的粉末推进剂 用于将保持的粉末推进剂转移到用于释放粉末推进剂的释放位置的推进剂转移装置以及用于激励所转移的粉末推进剂以将粉末推进剂从粉末推进剂吸附表面释放的推进能量供给装置, 其下游侧作为推进射流,同时在所述释放位置沿着大致垂直于粉末 - 推进剂吸引表面的方向加速粉末推进剂。 粉末推进剂转移装置设计成以粉末推进剂吸附表面的粉末推进剂保持区域返回到与粉末推进剂储存容器的开口相邻的位置的方式移动粉末推进剂吸附表面 以重复的方式。
    • 58. 发明授权
    • Electric orbit raising with variable thrust
    • 具有可变推力的电动轨道提升
    • US06543723B1
    • 2003-04-08
    • US09947186
    • 2001-09-04
    • David Oh
    • David Oh
    • B64G140
    • B64G1/007B64G1/242B64G1/401B64G1/403B64G1/406
    • Systems and methods for launching a satellite into orbit that optimize the mass of the satellite delivered into orbit. A satellite carrying one or more chemical propulsion devices and one or more electric propulsion devices is launched into a transfer orbit using a launch vehicle. In one embodiment, a selected chemical propulsion device is fired to raise the orbit of the satellite from the transfer orbit to an intermediate orbit. One or more electric propulsion device is fired to raise the orbit of the satellite from the intermediate orbit to final geosynchronous orbit and the one or more electric propulsion device is throttled to produce variable thrust levels so as to operate at all optimum specific impulse level to optimize the mass of the satellite delivered into orbit. In another embodiment, the electric propulsion device may deliver the satellite into a near-geosynchronous orbit instead of final geosynchronous orbit. In this case, a selected chemical propulsion device is fired to place the satellite in its final orbit. In yet another embodiment, the launch vehicle may be used to deliver the satellite into the intermediate starting orbit after which the electric propulsion device is used to achieve final orbit. In this case, the transfer orbit raising step is omitted.
    • 将卫星发射到轨道的系统和方法,优化传送到轨道的卫星的质量。 携带一个或多个化学推进装置和一个或多个电推进装置的卫星使用运载火箭发射到转移轨道中。 在一个实施例中,选择的化学推进装置被发射以将卫星的轨道从转移轨道升高到中间轨道。 一个或多个电力推进装置被发射以将卫星的轨道从中间轨道升高到最终的地球同步轨道,并且一个或多个电动推进装置被节流以产生可变的推力水平,以便以所有最佳特定脉冲水平运行以优化 卫星的质量进入轨道。 在另一个实施例中,电力推进装置可以将卫星输送到近地球同步轨道,而不是最终的地球同步轨道。 在这种情况下,发射选定的化学推进装置将卫星置于其最终轨道中。 在另一个实施例中,运载火箭可以用于将卫星递送到中间起始轨道,之后使用电推进装置来实现最终轨道。 在这种情况下,省略了转移轨道提升步骤。
    • 59. 发明授权
    • Method for velocity precision pointing in spin-stabilized spacecraft or rockets
    • 速度精度指向旋转稳定的航天器或火箭的方法
    • US06332592B1
    • 2001-12-25
    • US09635225
    • 2000-08-09
    • James M. LonguskiDaniel Javorsek, II
    • James M. LonguskiDaniel Javorsek, II
    • F02K972
    • B64G1/403B64G1/26B64G1/281
    • A method of velocity precision pointing of spin-stabilized spacecraft or rockets is disclosed. This method involves softening the ignition transient of the ramp up phase of thrust, which may be achieved by modification of the solid propellant, applying a coating of slow burning material upon the solid propellant varying the grain density of the solid propellant over an exposed surface area or as a function of propellant depth, where depth is defined in the direction of the burn surface area regression, pre-pressurizing the combustion chamber with a gas having a molecular mass smaller than that of the combustion products and which is unreactive with the propellant, installing one or more relief valves in the combustion chamber to regulate the pressure, forming a ring of an ablative material on the throat section of the nozzle, having a rubber fitting at a throat section of the nozzle to regulate the pressure of the combustion chamber, pulsing the engine, or using a pyrogen igniter to soften the ignition transient.
    • 公开了一种自旋稳定的航天器或火箭的速度精度指向的方法。 这种方法包括软化推力斜坡上升阶段的点火瞬变,这可以通过固体推进剂的改进来实现,将缓慢燃烧的材料涂覆在固体推进剂上,使固体推进剂的颗粒密度在暴露的表面积上变化 或作为推进剂深度的函数,其中在燃烧表面积回归方向上限定深度,用具有小于燃烧产物的分子量的气体对燃烧室进行预加压,并且与推进剂不反应, 在燃烧室中安装一个或多个安全阀以调节压力,在喷嘴的喉部上形成可消除材料的环,在喷嘴的喉部处具有橡胶配件以调节燃烧室的压力, 脉冲发动机,或使用热源点火器软化点火暂态。