会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Plasma propulsion apparatus and method
    • 等离子推进装置及方法
    • US4974487A
    • 1990-12-04
    • US252551
    • 1988-10-03
    • Yeshayahu S. A. GoldsteinDerek A. TidmanRodney L. BurtonDennis W. MasseyNiels K. Winsor
    • Yeshayahu S. A. GoldsteinDerek A. TidmanRodney L. BurtonDennis W. MasseyNiels K. Winsor
    • F41B6/00
    • F41B6/00
    • A projectile is accelerated in a barrel bore by applying a plasma jet to a projectile propelling fluid. The plasma jet is derived from a structure forming a capillary passage having a wall formed by a low molecular weight, dielectric powdery filler or water in many rigid containers, shaped as spheres or straw-like tubes having axes parallel to the passage longitudinal axis. The fluid and jet interact so the fluid is heated by the jet, whereby low atomic weight constituents of the fluid are sufficiently heated to become mixed with the plasma to form a high pressure mixture that is injected into the bore to accelerate the projectile. The fluid is dragged into the plasma during mixing to cool the plasma and form a boundary layer between the plasma and the barrel walls so that the mixture does not cause substantial damage to the walls of the bore. The plasma is energized by applying voltage from an electric pulse source to electrodes at opposite ends of the passage. The pulse has a wave shape and duration for initially igniting the plasma source and for thereafter applying energy to the ignited plasma to control the pressure of the mixture. Initially, the fluid cools the plasma without the mixture developing sufficient pressure to accelerate the projectile appreciably. The wave shape and duration are such that the pressure applied to the projectile remains substantially constant while the projectile is being accelerated through the barrel, as occurs during about one-half of the projectile travel time in the barrel.
    • 通过将等离子体射流施加到抛射体推进流体,炮弹在炮筒内加速。 等离子体射流源于形成毛细管通道的结构,该通道具有由许多刚性容器中的低分子量介电粉末填料或水形成的壁,其形状为具有平行于通道纵向轴线的轴的球形或稻草状管。 流体和射流相互作用使得流体被射流加热,由此流体的低原子量组分被充分加热以与等离子体混合以形成注入到孔中的高压混合物以加速射弹。 在混合期间将流体拖入等离子体以冷却等离子体并在等离子体和筒壁之间形成边界层,使得混合物不会对孔的壁造成实质损坏。 通过将来自电脉冲源的电压施加到通道的相对端处的电极来激发等离子体。 脉冲具有用于初始点燃等离子体源的波形和持续时间,并且此后将能量施加到点火等离子体以控制混合物的压力。 最初,流体冷却等离子体,而不会产生足够的压力使混合物明显加速。 波浪形状和持续时间使得当射弹在枪管中的大约一半的射弹行进时间期间发生时,施加到射弹的压力保持基本上恒定,同时射弹被加速通过枪管。
    • 10. 发明授权
    • Plasma generator for electrothermal gun cartridge
    • 电热枪等离子发生器
    • US5549046A
    • 1996-08-27
    • US238433
    • 1994-05-05
    • Melvin M. WidnerMichael RaleighYeshayahu S. A. GoldsteinJoseph R. Greig
    • Melvin M. WidnerMichael RaleighYeshayahu S. A. GoldsteinJoseph R. Greig
    • F42B5/08F42B6/00
    • F42B5/08F42B6/006
    • A plasma generator (44) for an electrothermal gun cartridge has elongated metallic rod and tube members (58,60) extending along a central axis thereof with the tube member (58) having at least one axial gap (62) and with an elongated annular insulator located between and in engagement with both metallic members to provide support therebetween as an electrical voltage generates an electrical arc at the axial gap to provide a plasma that ignites a propellant (46). Different embodiments of the plasma generator have a plurality of the axial gaps (62) located along the tube member (60) and are constructed for both simultaneous and sequential firing with fuses (74) controlling the timing. Helically extending member portions (78) provide rotation of the electrical arc and hence the plasma generated to distribute it for ignition of the propellent (46).
    • 一种用于电热枪筒的等离子体发生器(44)具有沿着其中心轴线延伸的细长金属杆和管件(58,60),管件(58)具有至少一个轴向间隙(62),并具有细长环形 绝缘子位于两个金属构件之间并且与两个金属构件接合以在它们之间提供支撑,因为电压在轴向间隙处产生电弧以提供点燃推进剂(46)的等离子体。 等离子体发生器的不同实施例具有沿着管构件(60)定位的多个轴向间隙(62),并且被构造成用于控制时序的熔丝(74)的同步和顺序点火。 螺旋延伸构件部分(78)提供电弧的旋转,并因此提供产生的等离子体,以分配它以点燃推进器(46)。