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    • 1. 发明授权
    • Pre-compressed penetrator element for projectile
    • 射弹预压穿透元件
    • US08707868B2
    • 2014-04-29
    • US12291036
    • 2009-07-07
    • Nicholas V. Nechitailo
    • Nicholas V. Nechitailo
    • F42B10/00
    • F42B12/06
    • A projectile instrument is provided for penetrating a target, the penetrator element being disposable in a projectile. The instrument includes a substantially cylindrical core, first and second plates and first and second devices. The core has first and second ends and a radially extending surface. The first plate supports the first end; the second plate supports the second end. The first device radially constrains the surface, whereas the second device axially constrains the first and second ends respectively disposed between their corresponding plates. Preferably, the core is either a ceramic or else is composed of reactive materials. In one embodiment, the first plate and the first device combine as a closed sleeve; the second plate is a lid removably secured to the first plate; and the second device is a helical spring disposed between the first end and the first plate. In another embodiment, the first and second devices constitute a plurality of bolt-and-nut assemblies, each bolt-and-nut assembly having a bolt and a nut, the bolt having a shaft terminating at head and tail ends, the shaft mechanically engaging the surface, the head end having a cap mounted to the shaft and male threads on the tail end, and the nut has female threads compatible with the male threads, the head and the bolt engaging against the first and second plates to compress the core.
    • 提供用于穿透目标的射弹仪器,穿透元件在抛射体中是一次性的。 仪器包括基本上圆柱形的芯,第一和第二板以及第一和第二装置。 芯具有第一和第二端以及径向延伸的表面。 第一板支撑第一端; 第二板支撑第二端。 第一装置径向约束表面,而第二装置轴向限制分别设置在它们对应的板之间的第一和第二端。 优选地,芯是陶瓷,或者由反应性材料组成。 在一个实施例中,第一板和第一装置组合成封闭的套筒; 第二板是可拆卸地固定到第一板的盖子; 并且第二装置是设置在第一端和第一板之间的螺旋弹簧。 在另一个实施例中,第一和第二装置构成多个螺栓和螺母组件,每个螺栓和螺母组件具有螺栓和螺母,所述螺栓具有终止于头部和尾端的轴,所述轴机械接合 表面,头端具有安装到轴的帽和尾端上的阳螺纹,并且螺母具有与阳螺纹相容的阴螺纹,头部和螺栓与第一和第二板接合以压缩芯。
    • 4. 发明授权
    • Rails for electromagnetic hypervelocity launcher
    • US07409900B1
    • 2008-08-12
    • US11602438
    • 2006-11-02
    • Nicholas V. NechitailoKeith B. Lewis
    • Nicholas V. NechitailoKeith B. Lewis
    • F41B6/00F41F1/00
    • F41B6/006
    • An electromagnetic launcher is provided for accelerating a projectile from a breech end to a muzzle end. The launcher includes a container, a rail contained therein and a support. The container includes an inner surface along an axial direction. The rail is contained within the inner surface and includes a load surface to support the projectile and an interface surface. The support is disposed between the interface surface and the inner surface. The rail and the support provide a value to an expression for critical velocity V cr = 2 ⁢ EIk ρ ⁢ ⁢ A , where E is Young's modulus for the rail, I is moment of inertia for the rail, k is foundation modulus for the support, ρ is density for the rail and A is the cross-sectional area of the rail. The launcher is configured such that the critical velocity increases along the axial direction towards the muzzle. In particular, a material term √E/ρ of the rail increases along the axial direction, such for the rail being made from a first material being proximate to the breech and a second material being proximate to the muzzle, such that the material term √E/ρ of the second material being greater than that of the first material. Alternatively, the rail is made into a first shape being proximate to the breech and a second shape being proximate to the muzzle, such that a shape term √I/A of the second shape is greater than that of the first shape.
    • 6. 发明授权
    • Method and apparatus to reduce variation of excess fiber length in buffer tubes of fiber optic cables
    • 减少光纤缓冲管中多余纤维长度变化的方法和装置
    • US06922515B2
    • 2005-07-26
    • US09973015
    • 2001-10-10
    • Nicholas V. NechitailoDean J. RattazziMatthew SoltisMichael Rossi
    • Nicholas V. NechitailoDean J. RattazziMatthew SoltisMichael Rossi
    • B65H55/04B65H75/18G02B6/44G02B6/00
    • G02B6/4484B65H55/04B65H75/18B65H2701/32B65H2701/331B65H2701/3916B65H2701/514G02B6/4457
    • The present invention provides a method for reducing and/or controlling the variations of excess fiber length along the length of reeled fiber optic buffer tubes during the manufacture of the buffer tubes. The present invention varies any number, or combination, of parameters during the manufacture of buffer tubes to achieve a substantially uniform excess fiber length along a reeled buffer tube. One embodiment of the inventive method uses monotonically decaying draw or take-up tension of the buffer tubes during winding, combined with a stiffness-compliant pad placed on the reel core to aid in providing a substantially uniform excess fiber length in the tube, while another embodiment uses a monotonically increasing angular speed of the reel in combination with the stiffness-compliant pad on the reel core. In yet another embodiment a pad is placed either periodically or continuously in the windings of the buffer tube to provide an absorbing layer for the residual stresses existing in the buffer tube as it is reeled and after the reeling is complete, combined with re-reeling the buffer tube onto a second reel after the buffer tube has cooled (after manufacture), where the pad is removed during the re-reeling process. Additionally, the present invention can have the layers of buffer tube separated with rigid, cylindrical panels separating the layers. The present inventive method also combines any, or all, of the above steps to aid in achieving a substantially uniform excess fiber length along the length of the reeled buffer tube.
    • 本发明提供了一种用于在制造缓冲管期间减少和/或控制沿着卷绕的光纤缓冲管的长度的多余纤维长度变化的方法。 本发明在制造缓冲管期间改变参数的任何数量或组合,以实现沿着卷绕的缓冲管的基本均匀的过量纤维长度。 本发明方法的一个实施例在卷绕期间使用缓冲管的单调衰减的拉伸或卷绕张力,与放置在卷轴芯上的刚度兼容垫相结合,以有助于在管中提供基本均匀的过量纤维长度,而另一个 实施例使用卷轴的单调增加的角速度与卷轴芯上的刚度兼容垫组合。 在另一个实施例中,衬垫周期性地或连续地放置在缓冲管的绕组中,以便为缓冲管中存在的残余应力提供吸收层,因为其被卷绕,并且在卷取完成之后,结合重新卷绕 缓冲管在缓冲管冷却(制造之后)时在第二卷轴上,其中在重新卷绕过程中垫被去除。 此外,本发明可以使缓冲管的层与刚性的分离层的圆柱形板分开。 本发明的方法还结合了上述步骤中的任何一种或全部,以有助于沿着卷绕的缓冲管的长度实现基本均匀的过量纤维长度。
    • 7. 发明授权
    • Coated optical fiber and optical fiber ribbon and method for the fabrication thereof
    • 涂覆光纤和光纤带及其制造方法
    • US06859600B2
    • 2005-02-22
    • US10157064
    • 2002-05-30
    • Igor V. KhudyakovNicholas V. Nechitailo
    • Igor V. KhudyakovNicholas V. Nechitailo
    • C03C25/10G02B6/02G02B6/44G02B6/22
    • G02B6/448C03C25/1065G02B6/02395G02B6/4403
    • A coated optical fiber includes a fiber coating having an unblended primary portion on the optical fiber, an unblended secondary portion, and a blended portion intermediate the unblended primary and secondary portions. The thickness of the blended portion is greater than or equal to about 10% but less than 100% of the thickness of the fiber coating. An optical fiber ribbon includes a ribbon matrix similarly having an unblended primary portion, an unblended secondary portion, and a blended portion between the unblended primary portion and unblended secondary portion. A method for fabricating a coated optical fiber or optical fiber ribbon includes applying a primary portion material to the optical fiber or plurality of coated optical fibers, and applying a secondary portion material in a manner selected to provide a blend of the primary portion material and the secondary portion material. An applicator apparatus includes means for performing the described steps.
    • 涂覆光纤包括在光纤上具有未混合的主要部分的纤维涂层,未共混的次级部分和在未混合的初级和次级部分之间的混合部分。 混合部分的厚度大于或等于纤维涂层厚度的约10%但小于100%。 光纤带包括类似地具有未共混的主要部分,未共混的次级部分和未混合的初级部分和未共混的次级部分之间的共混部分的带状基体。 一种制造涂覆光纤或光纤带的方法,包括将主要部分材料施加到光纤或多个涂覆的光纤,以及以选择的方式施加次级部分材料,以提供初级部分材料和 次级材料。 涂抹器装置包括用于执行所述步骤的装置。