{"id":92,"date":"2007-01-22T09:44:55","date_gmt":"2007-01-22T09:44:55","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=92"},"modified":"2007-01-22T09:47:39","modified_gmt":"2007-01-22T09:47:39","slug":"interior-pressure-in-the-mortar-and-motion-of-a-no-3-shell-in-a-fireworks-shot","status":"publish","type":"post","link":"http:\/\/www.jpyro.co.uk\/?p=92","title":{"rendered":"Interior Pressure in the Mortar and Motion of a No. 3 Shell in a Fireworks Shot"},"content":{"rendered":"<p align=\"left\"><strong><font face=\"TimesNewRomanPSMT\">Yuzo Ooki, Dayu Ding, Masamori Higaki and Tadao Yoshida*<\/font><\/strong><\/p>\n<p align=\"left\"><strong>Abstract:<\/strong> Interior pressure in a fireworks mortar and initial velocity for the shot of a no. 3 shell were measured and results were analyzed. The observed initial velocity was mainly explained by the action of the interior pressure during the shot. On the other hand, a delay in pressure propagation in the mortar, the effect of gas flow through the gap between the mortar and shell, and acceleration of the shell just after leaving the muzzle were suggested.<\/p>\n<p align=\"left\"><strong>Keywords:<\/strong> fireworks, shot, interior ballistics, initial velocity<\/p>\n<hr \/>\n<p><em><strong>Ref:<\/strong> JPyro, Issue 22, 2006, pp3-8<br \/> (J22_3)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Yuzo Ooki, Dayu Ding, Masamori Higaki and Tadao Yoshida* Abstract: Interior pressure in a fireworks mortar and initial velocity for the shot of a no. 3 shell were measured and results were analyzed. The observed initial velocity was mainly explained by the action of the interior pressure during the shot. On the other hand, a &hellip;<br \/><a href=\"http:\/\/www.jpyro.co.uk\/?p=92\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">Interior Pressure in the Mortar and Motion of a No. 3 Shell in a Fireworks Shot<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2,29],"tags":[],"_links":{"self":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/92"}],"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=92"}],"version-history":[{"count":0,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/92\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=92"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=92"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=92"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}