PURPOSE: To reduce the cost by providing a plurality of small computers each having a real time flight simulating function for one projectile depending on the number of projectiles and connecting them with a training control computer through a linkage unit. CONSTITUTION: A training control unit 12, a training section unit 13 and a plurality of small computers 30 each having a real time flight simulating function for one projectile are connected with a small training control computer 20 through a linkage unit 11. Since the small computer of relatively low performance is drastically low price as compared with a large computer, real time simulation of a large number of projectiles is performed without sacrifice of simulation performance by driving a large number of small computers 30 in parallel while sharing the operation and the remaining control function is also served by the small computers 30. According to the arrangement, a simulator for training launching of projectile can be constituted inexpensively as a whole as compared with a case where all functions are served by single large computer.
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