{"id":226,"date":"2007-01-30T10:39:57","date_gmt":"2007-01-30T10:39:57","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=226"},"modified":"2007-01-30T10:40:41","modified_gmt":"2007-01-30T10:40:41","slug":"comment-on-%e2%80%9cshell-altitude-vs-mortar-length%e2%80%9d-by-r-dixon","status":"publish","type":"post","link":"http:\/\/www.jpyro.co.uk\/?p=226","title":{"rendered":"Comment on: \u201cShell Altitude vs. Mortar Length\u201d by R. Dixon"},"content":{"rendered":"<p><strong>Shell Altitude vs. Mortar Length<\/strong><br \/> R. Dixon<\/p>\n<p>Review by Clive Jennings-White<\/p>\n<p align=\"left\">Ron Dixon has presented results on the correlation between the altitude achieved by a 3- inch (76-mm) shell and the length of the mortar from which it was fired. Provided that the mortar length was at least 18 inches (457 mm), there was no further gain in shell altitude with increasing mortar length. My own anecdotal observations are entirely in accord with Ron Dixon&rsquo;s measurements, provided that a commercial Black Powder lift is used. However there may be more to the old pyrotechnists&rsquo; wives&rsquo; tale of increasing shell altitude with increasing mortar length than these measurements suggest.<\/p>\n<p align=\"left\">Click download link below for more information<\/p>\n<hr \/>\n<p><strong>Ref:<\/strong> JPyro, Issue 12, 2000, pp68<br \/> (J12_68)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Shell Altitude vs. Mortar Length R. Dixon Review by Clive Jennings-White Ron Dixon has presented results on the correlation between the altitude achieved by a 3- inch (76-mm) shell and the length of the mortar from which it was fired. Provided that the mortar length was at least 18 inches (457 mm), there was no &hellip;<br \/><a href=\"http:\/\/www.jpyro.co.uk\/?p=226\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">Comment on: \u201cShell Altitude vs. Mortar Length\u201d by R. Dixon<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[34,24,2],"tags":[],"_links":{"self":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/226"}],"collection":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=226"}],"version-history":[{"count":0,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/226\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=226"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}