{"id":792,"date":"2020-04-13T07:12:16","date_gmt":"2020-04-13T07:12:16","guid":{"rendered":"https:\/\/deelmanl.wordpress.com\/?p=792"},"modified":"2020-04-13T07:12:16","modified_gmt":"2020-04-13T07:12:16","slug":"propellant-casting-for-the-130mm-booster","status":"publish","type":"post","link":"https:\/\/www.nerorockets.nl\/index.php\/2020\/04\/13\/propellant-casting-for-the-130mm-booster\/","title":{"rendered":"Propellant casting for the 130mm booster"},"content":{"rendered":"<p>20+ kgs of propellant was mixed in a A200 Hobart mixer in two batches of 10 kgs.<\/p>\n<p><iframe loading=\"lazy\" title=\"Mixing\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/j7FJ2iN9onc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Degassing of the mixture using a high vacuum<\/p>\n<p><iframe loading=\"lazy\" title=\"Degassing\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/CScclPkTlxQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>For casting of the propellant, a\u00a0<span style=\"color:var(--color-text);\">modified<\/span><span style=\"color:var(--color-text);\">\u00a0<\/span><span style=\"color:var(--color-text);\">hobart mixer bowl was used with a plugable opening in the bottom.\u00a0 This allows for a mess-free filling of the casting tube.\u00a0<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"Prop in funnel\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/NelRWgBFOyk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>After curing for several days, the lower plug of the casting tube was removed to reveal the nice star shaped XPS core supported by a 30mm aluminium rod.<\/p>\n<p><a href=\"https:\/\/deelmanl.wordpress.com\/wp-content\/uploads\/2020\/04\/20200411_144357.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-795\" src=\"https:\/\/deelmanl.wordpress.com\/wp-content\/uploads\/2020\/04\/20200411_144357.jpg?w=676\" alt=\"\" width=\"676\" height=\"380\" \/><\/a><\/p>\n<p>Subsequently, the propellant was glued into the 130&#215;5 casing using HTPB to avoid any air between liner and casing.<\/p>\n<p><a href=\"https:\/\/deelmanl.wordpress.com\/wp-content\/uploads\/2020\/04\/20200411_193454.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large wp-image-796\" src=\"https:\/\/deelmanl.wordpress.com\/wp-content\/uploads\/2020\/04\/20200411_193454.jpg?w=576\" alt=\"\" width=\"576\" height=\"1024\" \/><\/a><\/p>\n<p>After curing of the HTPB for several days, the XPS core will be dissolved by a mixture of acetone and xylol.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>20+ kgs of propellant was mixed in a A200 Hobart mixer in two batches of 10 kgs. Degassing of the mixture using a high vacuum For casting of the propellant, a\u00a0modified\u00a0hobart mixer bowl was used with a plugable opening in the bottom.\u00a0 This allows for a mess-free filling of the casting tube.\u00a0 After curing for [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-792","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/posts\/792","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/comments?post=792"}],"version-history":[{"count":0,"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/posts\/792\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/media?parent=792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/categories?post=792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nerorockets.nl\/index.php\/wp-json\/wp\/v2\/tags?post=792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}