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    • 60. 发明授权
    • Thixotropic IRFNA gel
    • 触变性IRFNA凝胶
    • US6165293A
    • 2000-12-26
    • US500642
    • 1983-05-26
    • Barry D. Allan
    • Barry D. Allan
    • C06B23/00C06B47/04C06B45/02
    • C06B23/001C06B47/04Y10S149/11Y10S149/112
    • A thixotropic oxidizer gel comprising inhibited red fuming nitric acid (IA) as the carrier with lithium nitrate (LiNO.sub.3) suspended therein and gelled with a gellant agent of SiO.sub.2 having a mean particle size of 0.015 microns has the rheological properties which can be tailored to match those of MICOM GEL, a fuel gel.A thixotropic gelled fuel (MICOM GEL) has been of particular interest because of its increased safety, reduced sloshing, ease of pumping at zero gravity and ability to suspend high concentrations of high-energy ingredients. However, a gelled oxidizer has been desired for use with the gelled fuel to constitute a thixotropic gelled propellant system. The combination of a gelled fuel (MICOM GEL) and a gelled oxidizer is now a reality after the development of the thixotropic oxidizer gel disclosed above. Of major significance is the matching of the rheologial properties of the two gels so that an oxidizer/fuel (O/F) ratio shift does not occur with a temperature change. The development of the thixotropic oxidizer gel obviates the problems of O/F shift attributed to using a liquid IRFNA oxidizer with MICOM GEL. The combination of the thixotropic oxidizer gel comprising the carrier of IRFNA in weight percent amounts from about 55.0 to 86.0, the suspended LiNO.sub.3 in weight percent amounts from about 10.0 to 40.0, and the gellant agent of SiO.sub.2 in weight percent amounts from about 4.0 to about 5.0 with MICOM GEL fuel offers both high Isp and high density Isp which translates to significant increases in total system performance. This combination reflects a range increase to 160 percent of the present system.
    • 包含被阻止的红色发烟硝酸(IRFNA)作为载体的硝酸锂(LiNO 3)悬浮在其中并用平均粒度为0.015微米的SiO 2胶凝剂凝胶化的触变氧化剂凝胶具有流变特性,其可以被定制以匹配 那些MICOM GEL,一种燃料胶。 触变凝胶燃料(MICOM GEL)由于其增加的安全性,减少的晃动,在零重力下的抽吸容易性以及悬浮高浓度高能量成分的能力而特别令人感兴趣。 然而,胶凝的氧化剂已经被期望与凝胶燃料一起使用以构成触变胶凝的推进剂系统。 在上述公开的触变氧化剂凝胶之后,胶凝燃料(MICOM GEL)和凝胶化氧化剂的组合现在成为现实。 重要的意义在于两种凝胶的流变特性的匹配,使得随温度变化不会发生氧化剂/燃料(O / F)比率的偏移。 触变氧化剂凝胶的发展消除了使用液体IRFNA氧化剂与MICOM GEL引起的O / F漂移的问题。 包含IRFNA载体的触变氧化剂凝胶的组合,其重量百分数为约55.0至86.0,悬浮的LiNO 3的重量百分比为约10.0至40.0,SiO 2的胶凝剂的重量百分比约为4.0至约 5.0与MICOM GEL燃料提供高Isp和高密度Isp,这意味着总系统性能显着提高。 这种组合反映了现有系统的范围增加到160%。