作为金属填料胶体的取代物,贝尔航宇公司大约在三年前就开展了对流化粉末推进剂的研究。当时,美海军和空军正在寻找改进予包装推进剂密度的方法,以用于容积有限的导弹,金属填料胶体,似乎是提高火箭或冲压发动机燃料密度和比冲的一个很有希望的方法。但是,胶体仅在一个有限的工作范围内,表现出良好的性能。而且已经证明,它的流变性质和流动性质也相当差。看来,这些将会影响它在未来空中发射导弹上所要求的速度和高度飞行范围内的应用。此外, As a substitute for metal filler colloids, Bell Aerospace conducted a study of fluidized powder propellants about three years ago. At that time, the United States Navy and the Air Force were looking for ways to improve the density of the propellants for packaging for use in limited volume missiles, metal filler gels, which seemed promising as a way to increase the density and specific impulse of rocket or ramjet engines. However, colloids only show good performance over a limited working range. It has also been shown that its rheological and fluid properties are also quite poor. It appears that these will affect its application to the range of speeds and altitudes required for future air-launched missiles. In addition,