{"id":176,"date":"2007-01-25T11:49:46","date_gmt":"2007-01-25T11:49:46","guid":{"rendered":"http:\/\/www.jpyro.com\/wp\/?p=176"},"modified":"2007-01-25T11:49:46","modified_gmt":"2007-01-25T11:49:46","slug":"application-of-hydroxyl-oh-radical-ultraviolet-absorption-spectroscopy-to-rocket-plumes","status":"publish","type":"post","link":"https:\/\/www.jpyro.co.uk\/?p=176","title":{"rendered":"Application of Hydroxyl (OH) Radical Ultraviolet Absorption Spectroscopy to Rocket Plumes"},"content":{"rendered":"<p align=\"left\"><strong>M. W. Teague, Tonya Felix, M. K. Hudson, and R. Shanks<\/strong><\/p>\n<p align=\"left\"><strong>ABSTRACT:<\/strong> A spectrometer system was constructed for measurement of transient species in flames by absorption of ultraviolet radiation. The output of a xenon arc lamp was used as the source of radiation, which was focused through the flame and onto a monochromator equipped with an intensified silicon diode array detector. The system was used to measure absorption by hydroxyl (OH) radical around 306 nm in the plume of a hybrid rocket motor. Hydroxyl terminated polybutadiene (HTPB) was used as the fuel and gaseous oxygen as the oxidizer. The experimental spectra were analyzed by comparison with known vibrational and rotational lines using a multi-parameter curve-fitting program. OH radical concentration and temperature profiles of the rocket plume are presented along with details of the spectrometer specifications.<\/p>\n<p align=\"left\"><strong>Keywords:<\/strong> absorption spectroscopy, hybrid rocket motor, combustion diagnostics<\/p>\n<hr \/>\n<p><em><strong>Ref:<\/strong> JPyro, Issue 16, 2002, pp74-75<br \/> (J6_71)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>M. W. Teague, Tonya Felix, M. K. Hudson, and R. Shanks ABSTRACT: A spectrometer system was constructed for measurement of transient species in flames by absorption of ultraviolet radiation. The output of a xenon arc lamp was used as the source of radiation, which was focused through the flame and onto a monochromator equipped with &hellip;<br \/><a href=\"https:\/\/www.jpyro.co.uk\/?p=176\" class=\"more-link pen_button pen_element_default pen_icon_arrow_double\">Continue reading <span class=\"screen-reader-text\">Application of Hydroxyl (OH) Radical Ultraviolet Absorption Spectroscopy to Rocket Plumes<\/span><\/a><\/p>\n","protected":false},"author":1,"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\/176"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=176"}],"version-history":[{"count":0,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/176\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jpyro.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}