METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS |
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| 申请号 | EP14836679 | 申请日 | 2014-08-08 | 公开(公告)号 | EP3033585A4 | 公开(公告)日 | 2017-04-19 |
| 申请人 | GENERAL DYNAMICS ORDNANCE AND TACTICAL SYSTEMS - CANADA VALLEYFIELD INC; | 发明人 | DURAND SIMON; PARADIS PIERRE-YVES; LEPAGE DANIEL; | ||||
| 摘要 | A method of manufacturing a multi-layered propellant grain is provided. The method of the present disclosure simplifies the setup necessary to produce multi-layered propellants by using industrial equipment that is more energy and space efficient than the machinery that is conventionally employed for such processes. The method comprises providing a first propellant formulation; providing a die configured to provide a structure having an outer shell and a hollow interior when material is extruded therethrough; extruding the first propellant formulation through said die, to produce a first propellant layer having an outer shell defining a hollow interior in the form channel having open ends; providing a second propellant formulation, said second propellant formulation being of low viscosity; injecting said second propellant formulation into said channel defined by said first propellant layer to form a second propellant layer disposed in said channel; and hardening said second propellant layer. The first and second propellant layers have different rates of burning. | ||||||
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