METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS
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 fo...
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| creator | PARADIS, Pierre-Yves LEPAGE, Daniel DURAND, Simon |
| description | 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. |
| format | Patent |
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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.</description><language>eng ; fre ; ger</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; AMMUNITION ; BLASTING ; CHEMICAL LIGHTERS ; CHEMISTRY ; DETONATING OR PRIMING DEVICES ; EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION ; EXPLOSIVES ; EXPLOSIVES OR THERMIC COMPOSITIONS ; FUSES ; HEATING ; LIGHTING ; MANUFACTURE THEREOF ; MATCHES ; MECHANICAL ENGINEERING ; METALLURGY ; PERFORMING OPERATIONS ; PYROPHORIC COMPOSITIONS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; TRANSPORTING ; USE OF SINGLE SUBSTANCES AS EXPLOSIVES ; WEAPONS ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200415&DB=EPODOC&CC=EP&NR=3033585B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200415&DB=EPODOC&CC=EP&NR=3033585B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PARADIS, Pierre-Yves</creatorcontrib><creatorcontrib>LEPAGE, Daniel</creatorcontrib><creatorcontrib>DURAND, Simon</creatorcontrib><title>METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS</title><description>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.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>AMMUNITION</subject><subject>BLASTING</subject><subject>CHEMICAL LIGHTERS</subject><subject>CHEMISTRY</subject><subject>DETONATING OR PRIMING DEVICES</subject><subject>EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION</subject><subject>EXPLOSIVES</subject><subject>EXPLOSIVES OR THERMIC COMPOSITIONS</subject><subject>FUSES</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MANUFACTURE THEREOF</subject><subject>MATCHES</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>PYROPHORIC COMPOSITIONS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSPORTING</subject><subject>USE OF SINGLE SUBSTANCES AS EXPLOSIVES</subject><subject>WEAPONS</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD3dQ3x8HdR8HdT8HX0C3VzdA4JDfL0c1fwDfUJ8dT1cYx0DXJ1UQgI8g9w9fFx9AtRcA9y9PQL5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BxgbGxqYWpk6GxkQoAQAHdygL</recordid><startdate>20200415</startdate><enddate>20200415</enddate><creator>PARADIS, Pierre-Yves</creator><creator>LEPAGE, Daniel</creator><creator>DURAND, Simon</creator><scope>EVB</scope></search><sort><creationdate>20200415</creationdate><title>METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS</title><author>PARADIS, Pierre-Yves ; LEPAGE, Daniel ; DURAND, Simon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3033585B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>AMMUNITION</topic><topic>BLASTING</topic><topic>CHEMICAL LIGHTERS</topic><topic>CHEMISTRY</topic><topic>DETONATING OR PRIMING DEVICES</topic><topic>EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION</topic><topic>EXPLOSIVES</topic><topic>EXPLOSIVES OR THERMIC COMPOSITIONS</topic><topic>FUSES</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MANUFACTURE THEREOF</topic><topic>MATCHES</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>PYROPHORIC COMPOSITIONS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSPORTING</topic><topic>USE OF SINGLE SUBSTANCES AS EXPLOSIVES</topic><topic>WEAPONS</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>PARADIS, Pierre-Yves</creatorcontrib><creatorcontrib>LEPAGE, Daniel</creatorcontrib><creatorcontrib>DURAND, Simon</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PARADIS, Pierre-Yves</au><au>LEPAGE, Daniel</au><au>DURAND, Simon</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS</title><date>2020-04-15</date><risdate>2020</risdate><abstract>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.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AMMUNITION BLASTING CHEMICAL LIGHTERS CHEMISTRY DETONATING OR PRIMING DEVICES EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION EXPLOSIVES EXPLOSIVES OR THERMIC COMPOSITIONS FUSES HEATING LIGHTING MANUFACTURE THEREOF MATCHES MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS PYROPHORIC COMPOSITIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING USE OF SINGLE SUBSTANCES AS EXPLOSIVES WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | METHOD OF MANUFACTURING MULTI-LAYERED PROPELLANT GRAINS |
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