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Spinning Projectile with an Inviscid Liquid Payload Impregnating Porous Media

机译:用不透明液体有效载荷浸渍多孔介质来旋转弹丸

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摘要

Liquid moment coefficients are computed for coning projectiles with a segmented stack of cylindrical cavities filled with a permeable medium, each fully impregnated with an in viscid liquid. The moment coefficients C_(LSM) and C_(LIM) enable an investigator to calculate liquid moments induced by a given liquid undergoing projectile coning motion described by angular velocity P. The most important moment is the liquid side moment, proportional to C_(LSM), because that moment can cause flight stability problems. C_(LSM) is presented as functions of coning frequency, fineness ratio, and constants C_t and C_x, used to represent porosity in the transverse and axial directions of the permeable medium. Differences between the axial porosity C_x and transverse porosity C_t can produce significant changes to the liquid side moment. As the number of segmented cylinders containing the saturated liquid payload increases, the liquid side moment approaches the value it would have if the liquid were frozen.
机译:计算圆锥形弹丸的液体弯矩系数,该圆锥形弹丸具有装满可渗透介质的圆柱形腔体的分段堆栈,每个腔体都完全浸有粘性液体。力矩系数C_(LSM)和C_(LIM)使研究人员能够计算由给定液体进行的由角速度P表示的抛射圆锥运动引起的液体力矩。最重要的力矩是与C_(LSM)成比例的液体侧力矩,因为那一刻可能会导致飞行稳定性问题。 C_(LSM)是圆锥频率,细度比以及常数C_t和C_x的函数,用于表示渗透性介质的横向和轴向孔隙率。轴向孔隙度C_x和横向孔隙度C_t之间的差异可对液体侧矩产生显着变化。随着包含饱和液体有效载荷的分段气缸的数量增加,液体侧力矩接近如果液体被冻结将具有的值。

著录项

  • 来源
    《AIAA Journal》 |2008年第3期|p.783-787|共5页
  • 作者

    G. R. Cooper;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空、航天;航空;
  • 关键词

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