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A warhead requires the most suitable HE (High explosives). It is necessary to determine the optimal casing and HE in the development stage of the warhead by repetition of a series of process design, trial production, and testing. Accuracy of the simulation (Hydro-code) results also requires a practically usable level. However, we have asked for the JWL (Jones-Wilkins-Lee) parameters numerically by using KHT (Kihara-Hikita-Tanaka) code, since we have not experimental instruments like a streak camera and these experiments spend great deal of time and cost. For this reason, the simulation result was different from the experiment one slightly. Recently, we can ask for the JWL parameters experimentally, using the image converter camera of Kumamoto University by the joint research activities. We hope that the accuracy of these simulations might be raised by these studies. As sample explosives, PBX (Plastics bonded explosives) which used RDX or HMX, and Comp.C-4 were chosen. Further, new explosive of which detonation velocity was decreased by adding GMB (Glass micro balloon) to Comp.C-4 was made. These explosives were studied by KHT code and experiment, and JWL parameters were also gotten. As the result we could get several information, so it would be reported in this paper.

Generally a warhead with HE (High explosives) demonstrates the performance for deforming and moving metal plate on it to use the forces acted by shock and gas of explosive's reaction. To utilize these forces more effectively, improving a case of warhead, a shape of part of metal and a material that constitutes it has been mainly studied now. However, in the improvement of only these metal parts, there is a limitation in the cost, and the upswing for a performance of the warhead. We have been certainly studying the parts of metals used in the warhead. Especially we focus about explosives and are studying about the upswing in the performance of the warhead by the improvement of explosives. These studies purpose to obtain the detonation characteristics of explosives, and to compare the result got from the experiment in order to raise the accuracy of a simulation. It aims finally at establishment of the architecture technique of the warhead. In this paper, we will introduce the example of the studying results about the upswing in the performance of the warhead when the shape of detonation shock front and a detonation pressure improve. And we are going to argue by considering these results.