Ballistic Mixing

The interaction of an energetic ion with a solid involves several processes. As an ion penetrates a solid, it slows down by depositing energy both to the atoms and to the electrons of the solid. During the nuclear collision portion of this process, target 

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Power, by Ballistic Pendulum 209% PA (Ref 6) Power, by Trauzl Test. For lOg sample with water tamping, the expansion is 61 See vs 600cc for NG, which gives ca 102.5% NG. When mixed with kieselguhr, or gelatinized with NC, MeN gives about the same values in the lead... 

When HNF or ADN particles are mixed with a GAP copolymer containing aluminum particles, HNF-GAP and ADN-GAP composite propellants are formed, respectively. A higher theoretical specific impulse is obtained as compared to those of aluminized AP-HTPB composite propellants.However, the ballistic properties of ADN, HNIW, and HNF composite propellants, such as pressure exponent, temperature sensitivity, combustion instability, and mechanical properties, still need to be improved if they are to be used as rocket propellants. 

Mix Process. Usually all liquid components (except the diisocyanate), antioxidants, ballistic additives, bonding agents, and metallic fuel are blended together and transferred to the mixer, a jacketed stainless steel vessel with provisions for vacuum mixing. This mixer is not much different from those found in the bread-baking industry, from which, in fact, this one was derived. Depending on the type of propellant, the... 

A premix is prepared by mixing the fuel binder (i.e. a polysulphide rubber in the case of the Thiokol propellant) with the necessary curing agents, inert additives, and ballistic modifiers in a double-acting paddle mixer. This mixer is equipped... 

Some technological information on the Aerojet General Corporation s composite propellants technology was published recently [20]. Ammonium perchlorate is ground to the particle sizes ranging from 1 to 200 fx and then mixed to form a blend of the various particle sizes which gives the best mechanical and ballistic properties. Ammonium perchlorate is mixed with liquid polybutadiene-acrylonitrile fuel, liquid plasticizer and aluminium powder (Fig. 118). The motor casing is coated internally... 

The more modem approach to the problem of mixing nitrocellulose consists of mixing defined types of nitrocellulose in the nitrocellulose factory itself. In this case the two forms of nitrocellulose are mixed under water in mixers as described in Vol. II, p. 374. The water is then centrifuged and the mixture dehydrated with alcohol. This method, however, creates certain inconvenience to the powder factory which loses the possibility of changing (within certain limits) the composition of the mixtures, i.e. nitrogen content and total solubility of nitrocellulose. The powder factory is therefore compelled to limit the number of factors which can be varied to obtain the powder of required ballistic properties. 

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