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    • 2. 发明授权
    • Plume enhancement nozzle for achieving flare rotation
    • 羽流增强喷嘴用于实现火炬旋转
    • US5654522A
    • 1997-08-05
    • US495716
    • 1995-06-27
    • David W. Endicott, Jr.Ross W. GuymonRalph S. Tappan, II
    • David W. Endicott, Jr.Ross W. GuymonRalph S. Tappan, II
    • F42B4/26F42B10/06F42B10/30F42B4/06
    • F42B10/30F42B10/06F42B4/26
    • An aerodynamically stable, kinematic flare having an enhanced plume signature is disclosed. The flare includes a housing with a flare illuminant disposed within the housing. A primary nozzle is configured in the aft wall of the housing. Four secondary nozzles are configured in the aft end of the side wall of the housing and are positioned aft of the center of gravity of the flare. At least two of the secondary nozzles comprise off-center nozzles having a longitudinal axis which does not extend through the longitudinal axis of the flare. A shroud is attached to the housing and deploys to an extended position upon combustion of the illuminant. The shroud is configured with holes which correspond in size and position to each of the secondary nozzles when the shroud is in its extended position. The primary and secondary nozzles are sized and positioned to spin stabilize the flare during combustion of the illuminant.
    • 公开了具有增强的羽流签名的空气动力学稳定的运动火炬。 火炬包括具有设置在壳体内的耀斑光源的壳体。 主喷嘴配置在壳体的后壁上。 四个二次喷嘴构造在壳体的侧壁的后端,并且位于火炬重心的后方。 至少两个次级喷嘴包括偏心中心喷嘴,其具有不延伸穿过火炬的纵向轴线的纵向轴线。 护罩附接到壳体并且在发光体燃烧时展开到延伸位置。 当护罩处于其延伸位置时,护罩被配置有在尺寸和位置上对应于每个次级喷嘴的孔。 主喷嘴和次喷嘴的尺寸和位置可以在发光体的燃烧期间旋转稳定火炬。
    • 3. 发明授权
    • Synthesis of bis(2,2-dinitropropyl)acetal (BDNPA)
    • 双(2,2-二硝基丙基)缩醛(BDNPA)的合成
    • US5648556A
    • 1997-07-15
    • US339138
    • 1994-11-14
    • R. Scott HamiltonRobert B. Wardle
    • R. Scott HamiltonRobert B. Wardle
    • C07C201/12C07B61/00C07C205/29C07C41/50C07C43/30
    • C07C201/12
    • A nonsolvent process of synthesizing bis(2,2-dinitropropyl)acetal (BDNPA) is disclosed. In the process, 2,2-dinitropropanol (DNPOH) is reacted at low temperature with an acetaldehyde source in the presence of an acid catalyst, such as a Lewis acid catalyst or protic acid catalyst. To inhibit by product formation, the reaction temperature is maintained from about -30.degree. C. to 30.degree. C. Upon completion of the reaction, the reaction solution is quenched with water and washed with an aqueous hydroxide solution. The hydroxide concentration should be sufficient to neutralize any acid formed during the quenching step and to solubilize unreacted 2,2-dinitropropanol as well as other aqueous soluble byproducts in the reaction solution. The BDNPA product is extracted with methyl tert-butyl ether (MTBE) or equivalent solvent. The organic solvent is evaporated to yield usable BDNPA product. The resulting yield is at least 50% based on the starting quantity of 2,2-dinitropropanol.
    • 公开了合成双(2,2-二硝基丙基)缩醛(BDNPA)的非溶剂方法。 在此过程中,在酸催化剂如路易斯酸催化剂或质子酸催化剂存在下,将2,2-二硝基丙醇(DNPOH)在低温下与乙醛源反应。 为了抑制产物形成,将反应温度保持在约-30℃至30℃。反应完成后,将反应溶液用水淬灭并用氢氧化钠水溶液洗涤。 氢氧化物浓度应足以中和淬灭步骤中形成的任何酸,并将未反应的2,2-二硝基丙醇以及其他水溶性副产物溶解在反应溶液中。 用甲基叔丁基醚(MTBE)或等效溶剂萃取BDNPA产物。 将有机溶剂蒸发,得到可用的BDNPA产物。 基于2,2-二硝基丙醇的起始量,所得产率为至少50%。
    • 4. 发明授权
    • Infrared tracer compositions
    • 红外示踪剂组合物
    • US5639984A
    • 1997-06-17
    • US651617
    • 1996-05-22
    • Daniel B. Nielson
    • Daniel B. Nielson
    • C06B43/00C06C15/00F42B4/26
    • C06B43/00C06C15/00Y10S149/116
    • Convert infrared tracer compositions are provided. The compositions are formed using peroxide such as strontium peroxide and barium peroxide. Added to these materials is a burn rate catalyst such as boron, iron oxide, cupric oxide, manganese dioxide, carbon, silicon, graphite fibrils, amorphous silica, copper oxide, potassium dodecaborate, the dipotassium salt of bitetrazole amine, and the potassium salt of dilituric acid. The composition also includes alkali metal compounds in order to enhance the infrared emissions. The compositions are bound together using a binder such that the composition results in a granular material having a mean particle size in the range of from about 500.mu. to about 800.mu..
    • 提供了转换红外示踪剂组合物。 使用过氧化物如过氧化锶和过氧化钡形成组合物。 添加到这些材料中的是燃烧速率催化剂,例如硼,氧化铁,氧化铜,二氧化锰,碳,硅,石墨原纤,无定形二氧化硅,氧化铜,十二硼酸钾,四唑硼酸二钾盐, d ic酸。 该组合物还包括碱金属化合物以增强红外发射。 使用粘合剂将组合物结合在一起,使得组合物得到平均粒度在约500μm至约800μm范围内的颗粒材料。
    • 5. 发明授权
    • Propellant gas-generation system for canister ejection
    • 用于罐喷射的推进剂气体发生系统
    • US5616884A
    • 1997-04-01
    • US911941
    • 1992-07-10
    • Mark A. SolbergJames A. Hartwell
    • Mark A. SolbergJames A. Hartwell
    • C06B45/12C06D5/06F02K9/14F42B5/16F42B5/38F42B4/06
    • F02K9/14C06B45/12C06D5/06F42B5/16F42B5/38
    • A propellant system is disclosed which includes a propellant applied to at least one surface of a substrate which is in the form of a strip. The propellant strip is adhesively attached to itself in a configuration which conceals propellant within the configuration and which allows the attached strip to peel away from itself under applied forces thereby resulting in smooth and continuous exposure of propellant for burning. The system is directed to use with ejectable projectiles which are slidably disposed within a canister or casing. The propellant system is interconnected between the projectile and the cannister which houses the projectile. The propellant is urged to peel, and thus expose propellant for burning, as the projectile is ejected from the canister. Alternatively, the propellant is telescoped and covered with a sleeve which peels away as the projectile is ejected.
    • 公开了一种推进剂系统,其包括施加到条带形式的基底的至少一个表面上的推进剂。 推进剂条以其结构隐藏推进剂的结构粘附到自身上,并且允许附着的条在施加的力下从其自身剥离,从而导致推进剂燃烧的平滑和连续的暴露。 该系统旨在与可滑动地设置在罐或套管内的可弹出射弹一起使用。 推进剂系统在射弹和容纳射弹的罐之间相互连接。 推动剂被迫剥离,从而暴露推进剂燃烧,因为射弹从罐中排出。 或者,推进剂被套叠并用套筒覆盖,当弹丸被弹出时,推进剂被剥去。
    • 8. 发明授权
    • High solids rocket motor propellants using diepoxy curing agents
    • 使用二环氧固化剂的高固体火箭发动机推进剂
    • US5554820A
    • 1996-09-10
    • US406573
    • 1995-03-20
    • Robert B. WardleR. Scott Hamilton
    • Robert B. WardleR. Scott Hamilton
    • C06B45/10
    • C06B45/10
    • A PBAN-based solid rocket motor propellant which includes more than 85% or more solids is provided. Propellants of this nature are possible using the combination of diepoxide curing agents and PBAN as a binder. The curing agents include diepoxides having 4 to about 10 carbon atoms. It has been observed that when a diepoxide curing agent is substituted for conventional curing agents, viscosities are significantly reduced, thus enabling the addition of higher percentages of solids in the propellant formulation. Total solids loading of over 85% are achievable while maintaining end-of-mix viscosities within acceptable ranges.
    • 提供了一种包含超过85%或更多固体的PBAN固体火箭发动机推进剂。 这种性质的推进剂可以使用二环氧化物固化剂和PBAN作为粘合剂的组合。 固化剂包括具有4至约10个碳原子的二环氧化物。 已经观察到,当二环氧化物固化剂代替常规固化剂时,粘度显着降低,因此能够在推进剂制剂中添加更高百分比的固体。 总固体含量超过85%是可以实现的,同时保持混合后的粘度在可接受的范围内。