| The navy 37millimeter gun is one of the main small caliber gun in our naval ships. But it has been long that the structure and shape of navy 37millimeter gun shrapnel don't vary, so the main ballistic trajectory performance is poor, such as power N shooting precision flying time. These have been not able to adapt the need of modem weapon technology development for war field weapon equipment performance. At the case, the 9343 factory in jiangxi province improve navy 37millimeter gun shrapnel, but the army corps side bring forward that improved navy 37millimeter gun shrapnel and the old navy 37millimeter gun shrapnel must use the same firing table, in other words, the navy 37millimeter improved gun shrapnel and the old gun shrapnel keep the same ballistic trajectory in availability gunshot, Therefore, the purpose of the paper , according to theory and experimentation study, confirm the better improved shrapnel project at the base of 9343 factory bringing forward the improved shrapnel project.In this paper the model of pill flying outer ballistic trajectory is established, and the aerodynamic force calculating method is given. The author set forth the relation of small caliber gun currency firing table and ballistic trajectory consistency, and give testing relation formula of small caliber gun cartridge ballistic trajectory consistency; at the condition of navy 37 millimeter gun, the design of improved shrapnel currency firing table project is studied; the data of shooting experimentation is analyzed, and have contrast analysis with theory calculating result. give better improved shrapnel project, and the ballistic trajectory consistency experimentation show that the project satisfy the request of the ballistic trajectory consistency. |
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