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    • 5. 发明授权
    • Pre-deformed obturator for tube-launched projectile
    • 管型弹丸预变形闭孔器
    • US08950334B1
    • 2015-02-10
    • US14079044
    • 2013-11-13
    • Ryan Hooke
    • Ryan Hooke
    • F42B14/02
    • F42B14/02
    • A pre-deformed obturator for a projectile launched from a rifled tube includes an annular ring with a forward planar surface normal to the central longitudinal axis of the obturator. A top cylindrical surface extends aft from the forward planar surface and normal to the forward planar surface. A plurality of projections are formed on the top cylindrical surface and are configured to engage the rifling of the tube. An opening is formed in an aft end of each of the plurality of projections for receiving propellant gas. The opening may also be contiguously formed in the aft surface of the obturator radially inward of each projection. Propellant gas enters the openings in the aft of the obturator and expands the obturator to provide an efficient gas seal.
    • 用于从膛管发射的弹丸的预变形填塞器包括具有垂直于闭孔器的中心纵向轴线的前平面表面的环形环。 顶部圆柱形表面从前平面表面向后延伸并垂直于前平面表面。 多个凸起形成在顶部圆柱形表面上,并被构造成与管的膛线接合。 在多个突起中的每一个的后端形成开口,用于接收推进剂气体。 开口也可以连续地形成在每个突起的径向向内的封闭体的后表面中。 推进剂气体进入封闭器后部的开口,并使填塞孔膨胀以提供有效的气体密封。