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    • 1. 发明授权
    • Reduced cavity wideband multi polar spiral antenna
    • 减少空腔宽带多极螺旋天线
    • US08749451B1
    • 2014-06-10
    • US12932001
    • 2011-02-15
    • J. Michael ZamarronUmang R. PatelKurt S. Schuder
    • J. Michael ZamarronUmang R. PatelKurt S. Schuder
    • H01Q1/36
    • H01Q1/36H01Q1/28
    • A wideband antenna with backlobe elimination in a confined space is disclosed. Backlobe elimination is by an array of electromagnetically conductive members disposed between the spiral element and the ground plane and almost contacting the ground plane so as to bleed a backlobe away from the spiral antenna to the ground plane. In one embodiment, the members are conical elements disposed between the spiral element and the ground plane of a spiral antenna such that the apexes of the conical elements almost contact the spiral element and the bases of the conical elements contact the ground plane. In some embodiments, other means may be employed to perform this function. In operation, conical elements bleed the backlobe of the signal away from the spiral element to the ground plane.
    • 公开了一种在有限空间中消除背波的宽带天线。 背板消除是通过设置在螺旋元件和接地平面之间并几乎接触接地平面的电磁导电构件的阵列,以使背瓣从螺旋天线离开到接地平面。 在一个实施例中,构件是设置在螺旋形元件和螺旋天线的接地平面之间的锥形元件,使得圆锥形元件的顶点几乎接触螺旋元件,圆锥形元件的基部接触地平面。 在一些实施例中,可以采用其他手段来执行该功能。 在操作中,锥形元件将信号的背瓣从螺旋元件排出到接地平面。
    • 3. 发明申请
    • Integrated Pusher Plate for a Canister- or Gun-Launched Projectile and System Incorporating Same
    • 集成推动板用于罐或枪发射的射弹和系统相同
    • US20090308274A1
    • 2009-12-17
    • US12137187
    • 2008-06-11
    • Wayne K. SchroederUmang R. PatelJohnny E. Banks
    • Wayne K. SchroederUmang R. PatelJohnny E. Banks
    • F42B5/26F42C19/08
    • F42C19/0823F41F3/04F42B5/105
    • A pusher plate assembly for launching a projectile includes a pusher plate, a pressure seal circumferentially extending about the pusher plate, a cage extending from an aft side of the pusher plate, and a plurality of propellant portions disposed in the cage. A projectile system includes a launching tube, a projectile disposed in the launching tube, a pusher plate assembly disposed between an aft end of the projectile and the launching tube, a fuze, a charge igniter operatively associated with the fuze and the plurality of propellant portions, and a retainer disposed within the launching tube proximate a mouth of the launching tube. The pusher plate assembly includes a pusher plate, a pressure seal circumferentially extending about the pusher plate to seal an annulus between the pusher plate and the launching tube, a cage extending from an aft side of the pusher plate, and a plurality of propellant portions disposed in the cage.
    • 用于发射抛射体的推板组件包括推板,围绕推板周向延伸的压力密封件,从推板的后侧延伸的保持架和设置在保持架中的多个推进剂部分。 射弹系统包括发射管,设置在发射管中的射弹,设置在射弹的后端与发射管之间的推板组件,引信,与引信可操作地连接的电荷点火器和多个推进剂部分 以及靠近发射管的嘴部设置在发射管内的保持器。 推板组件包括推板,围绕推板周向延伸的压力密封件,用于密封推板和发射管之间的环状空间,从推板的后侧延伸的保持架,以及多个推进剂部分, 在笼子里