Cannonball for training |
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| 申请号 | JP23253887 | 申请日 | 1987-09-18 | 公开(公告)号 | JPS6475897A | 公开(公告)日 | 1989-03-22 |
| 申请人 | Mitsubishi Heavy Ind Ltd; | 发明人 | TANEDA YUJI; | ||||
| 摘要 | PURPOSE: To get a shell which flies with conventional performance for a necessary distance and thereafter lands on the earth with the shortest possible distance, by providing the shell with a hole piercing it from the tip of the body to the side of the body, within the body of the shell, and further, providing it with a cover which melts by the aerodynamic heating by the flying of the shell, at the inlet of the hole at the tip of the body. CONSTITUTION: A shell is equipped with a body 1 and a fin 2, and the external form is made similar to a conventional one. The body 1 is provided with a hole 4 bent at the bend 5 piercing it from the tip to the topside. This shell is provided with a cover 3 made of, for example, synthetic resin or the like, at the inlet of that hole 4. For that cover 3, the thickness, etc., are set in advance so that the cover may melt enough to let the hole through about the time when it gets over the range from the quantity of aerodynamic heating being settled by the flying velocity and the planned range. Accordingly, it follows that the shell flies the specified trajectory until the shell reaches the target and looses it balance after a specified time after a specified time and lands on the earth, by selecting the material of the cover, the thickness, etc. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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