{"id":280,"date":"2007-02-06T18:41:21","date_gmt":"2007-02-06T18:41:21","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=280"},"modified":"2007-03-10T12:30:34","modified_gmt":"2007-03-10T12:30:34","slug":"model-rocket-engines-theory-and-design","status":"publish","type":"post","link":"https:\/\/www.jpyro.co.uk\/?p=280","title":{"rendered":"Model Rocket Engines, Theory and Design"},"content":{"rendered":"<p><font face=\"TimesNewRoman\"><strong>E. J. Clinger&nbsp;and <font face=\"TimesNewRoman\">Wesley D. Smith<\/font><\/strong><\/font>&nbsp; <\/p>\n<p align=\"left\"><strong>ABSTRACT:<\/strong> A semi-empirical theory is presented for the design of model rocket motors that use Black Powder for fuel. By choosing the values of a few adjustable parameters, a hobbyist can construct motors that perform satisfactorily without extensive or dangerous trial and error. Formulas are given for calculating the nozzle diameter, the combustion chamber height, and such performance descriptors as specific impulse and average thrust for any size of model rocket motor.<\/p>\n<p> <strong>Keywords:<\/strong> model rocketry, Black Powder, rocket propulsion theor<font face=\"TimesNewRoman\"><font face=\"TimesNewRoman\">y <\/p>\n<hr \/>\n<p><strong>Ref:<\/strong> JPyro, Issue 5, 1997, pp1-7<br \/> (J5_1)<\/font><\/font><\/p>\n","protected":false},"excerpt":{"rendered":"<p>E. J. Clinger&nbsp;and Wesley D. Smith&nbsp; ABSTRACT: A semi-empirical theory is presented for the design of model rocket motors that use Black Powder for fuel. By choosing the values of a few adjustable parameters, a hobbyist can construct motors that perform satisfactorily without extensive or dangerous trial and error. Formulas are given for calculating the &hellip;<br \/><a href=\"https:\/\/www.jpyro.co.uk\/?p=280\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">Model Rocket Engines, Theory and Design<\/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":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/280"}],"collection":[{"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=280"}],"version-history":[{"count":0,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/280\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=280"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=280"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=280"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}