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公开(公告)号：US20030132351A1
公开(公告)日：2003-07-17
申请号：US10052056
申请日：2002-01-17
IPC分类号： B64C023/06
CPC分类号： F42B10/38 , B64C23/06 , B64C2230/06 , B64C2230/20 , B64C2230/22 , F42B10/22 , Y02T50/162 , Y02T50/166
摘要： A forebody 10 for an aeronautical vehicle 12 is provided. The forebody 10 includes an exterior wall 14 having a first half 16 and a second half 18. The first half 16 has a first porous section 20 and the second half 18 has a second porous section 24. The first half 16 and the second half 18 also have a first exterior side 22 experiencing a first fluidic pressure and a second exterior side 26 experiencing a second fluidic pressure, respectively. A hollow inner cavity 28 is fluidically coupled to the first exterior side 22 and the second exterior side 26 and allows fluid passage between the first exterior side 22 and the second exterior side 26 through the first porous section 20, the inner cavity 28, and the second porous section 24. The exterior wall 14 equalizes the first fluidic pressure with the second fluidic pressure. Additional forebodies and methods for performing the same are also provided.
摘要翻译： 提供了一种用于航空车辆12的前身10。 前体10包括具有第一半部16和第二半部18的外壁14.第一半部16具有第一多孔部分20，第二半部18具有第二多孔部分24.第一半部16和第二半部18 还具有分别经历第一流体压力的第一外侧22和经历第二流体压的第二外侧26。 中空的内腔28流体耦合到第一外侧22和第二外侧26，并允许流体在第一外侧22和第二外侧26之间通过第一多孔部分20，内腔28和 第二多孔部分24.外壁14使第一流体压力与第二流体压力相等。 还提供了进一步的附加前提和方法。
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公开(公告)号：US5932836A
公开(公告)日：1999-08-03
申请号：US926153
申请日：1997-09-09
申请人： Charles O. White
发明人： Charles O. White
摘要： A training projectile that utilizes flutes or flats to augment roll damping characteristics and thereby cause the projectile to crossover into a gyroscopically unstable trajectory pattern at a predetermined time. Prior to the crossover, the training projectile maintains a gyroscopically stable trajectory, which enables extrapolation to ascertain the trajectory of a non-training projectile that does not have an augmented roll damping section. The unstable trajectory pattern substantially reduces the distance the training projectile can traverse, thereby reducing the amount of area required for a training range.
摘要翻译： 一种训练抛射体，其利用凹槽或平面来增加滚动阻尼特性，从而使射弹在预定时间内交叉成陀螺不稳定的轨迹图案。 在交叉之前，训练抛射体保持陀螺稳定的轨迹，这使得外推能够确定没有增加的滚动阻尼部分的非训练射弹的轨迹。 不稳定的轨迹图形大大减少了训练射弹可以穿过的距离，从而减少训练范围所需的面积。
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公开(公告)号：US4789117A
公开(公告)日：1988-12-06
申请号：US947164
申请日：1986-12-29
摘要： A body adapted to move downstream through a fluid has a downstream extending smooth surface terminating at a blunt base. A plurality of adjacent U-shaped, downstream extending troughs in the smooth surface intersect the blunt base to form trough outlets. The troughs are appropriately spaced apart, sized and configured to flow full over their entire length and cause fluid to flow into the space immediately behind the blunt base, thereby reducing base drag on the body.
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公开(公告)号：US4776535A
公开(公告)日：1988-10-11
申请号：US117770
申请日：1987-11-05
摘要： A body adapted to move downstream through a fluid has a downstream extending smooth surface terminating at a blunt base. Extending transversely across the smooth surface and disposed upstream of the blunt base is a thin, downstream extending plate closely spaced from the smooth surface. At least the downstream end portion of the plate is convoluted such that its downstream end is wave shaped. The convolutions are designed to generate pairs of counterrotating vortices which delay boundary layer separation from the smooth surface and cause fluid to flow into the space immediately behind the blunt base, reducing base drag on the body. The device generates very little drag of its own.
摘要翻译： 适于通过流体向下游移动的主体具有终止于钝底的下游延伸的平滑表面。 横向延伸穿过光滑表面并设置在钝底部的上游是与光滑表面紧密隔开的薄的下游延伸板。 板的至少下游端部分被卷曲，使得其下游端是波浪形的。 卷积被设计成产生成对的逆旋转涡流，其延迟边界层与光滑表面的分离，并使流体流入紧邻基底的空间中，从而减少身体上的基底阻力。 该设备自身产生很小的拖动。
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公开(公告)号：US4700630A
公开(公告)日：1987-10-20
申请号：US902297
申请日：1986-08-29
申请人： Leroy J. Sullivan
发明人： Leroy J. Sullivan
CPC分类号： F42B14/064 , F42B10/22 , F42B14/02 , F42B7/10
摘要： In an ammunition round a substantially full bore diameter bullet has a plurality of elongate grooves either helically formed or parallel with the longitudinal axis of the bullet and a sabot which has a body and fingers which engage with the grooves and seal the bullet in a casing, the sabot having a slightly larger diameter than the bullet so that the sabot is engraved by the rifling slots in the barrel through which the round is to be fired, in order to rotate the bullet. In alternative constructions the grooves contain elongate elements or a plurality of spherical elements to prevent the conically tapered slug or bullet from tilting or cocking in the barrel after firing.
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公开(公告)号：US4644866A
公开(公告)日：1987-02-24
申请号：US621735
申请日：1984-06-18
申请人： Leroy J. Sullivan
发明人： Leroy J. Sullivan
CPC分类号： F42B14/064 , F42B10/22 , F42B14/02 , F42B7/10
摘要： In an ammunition round a substantially full bore diameter bullet has a plurality of elongate grooves either helically formed or parallel with the longitudinal axis of the bullet and a sabot which has a body and fingers which engage with the grooves and seal the bullet in a casing, the sabot having a slightly larger diameter than the bullet so that the sabot is engraved by the refling slots in the barrel through which the round is to be fired, in order to rotate the bullet. In alternative constructions the grooves contain elongate elements or a plurality of spherical elements to prevent the conically tapered slug or bullet from tilting or cocking in the barrel after firing.
摘要翻译： 在弹药周围，基本上全径径的子弹具有多个细长槽，其与子弹的纵向轴线螺旋形成或平行，并且具有主体和指状物，其与槽啮合并将子弹密封在壳体中， 该膛体具有比该子弹稍大的直径，使得该膛座被圆筒中的反射槽刻划，以便旋转该子弹。 在替代构造中，凹槽包含细长元件或多个球形元件，以防止圆锥形锥形或子弹在点火之后在筒中倾斜或翘起。
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公开(公告)号：US1521406A
公开(公告)日：1924-12-30
申请号：US49484021
申请日：1921-08-24
申请人： BOWN TAYLOR LESLIE
发明人： BOWN TAYLOR LESLIE
IPC分类号： F42B10/22
CPC分类号： F42B10/22
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公开(公告)号：US1428683A
公开(公告)日：1922-09-12
申请号：US24786018
申请日：1918-08-01
申请人： KENNEDY DOUGAN
发明人： KENNEDY DOUGAN
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公开(公告)号：US1302167A
公开(公告)日：1919-04-29
申请号：US17733217
申请日：1917-06-27
申请人： HUBBARD ALEXANDER
发明人： HUBBARD ALEXANDER
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