{"id":2604,"date":"2011-01-24T04:51:45","date_gmt":"2011-01-24T04:51:45","guid":{"rendered":"http:\/\/jpaerospace.com\/blog\/?p=2604"},"modified":"2011-01-24T04:51:45","modified_gmt":"2011-01-24T04:51:45","slug":"small-motor-run-mhd-test-28","status":"publish","type":"post","link":"https:\/\/jpaerospace.com\/new_wordpress\/?p=2604","title":{"rendered":"Small Motor Run, MHD Test 28"},"content":{"rendered":"<p>When we looked at the data for MHD generator test 27 all we saw were a file full of zeros. That was our first run with a composite motor.\u00a0 Was it the non conductive coating that the motor deposited on the electrodes? Did the blown out fragments of copper short across the electrodes? Is the difference in motor chemistry such that the current is lower than we can detect? \u00a0\u00a0 One thing we know when faced with too many unknowns, it&#8217;s time to get methodical.<\/p>\n<p>For a start we&#8217;ve going to test two small motors, one black power and one composite on the same unit. We&#8217;re going to look at electrode voltage instead of current to put it in a better range for the data sampling.<\/p>\n<p>Saturday we made a new set of copper electrode plates, cleaned up the mini-MHD generator and pressed it back into service.\u00a0 We got the first firing, the small black powder motor, completed.<\/p>\n<p><a href=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-thumbnail wp-image-2621\" title=\"MHD Test 28, Top View\" src=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-1-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a> <a href=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-4.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-thumbnail wp-image-2622\" title=\"MHD Test 28 front view \" src=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-4-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a><\/p>\n<p><a href=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-V-Data2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2631\" title=\"MHD Test 28 Plate Voltage Data\" src=\"https:\/\/jpaerospace.com\/new_wordpress\/wp-content\/uploads\/2011\/01\/MHD_Test28-V-Data2-300x156.jpg\" alt=\"\" width=\"300\" height=\"156\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>When we looked at the data for MHD generator test 27 all we saw were a file full of zeros. That was our first run with a composite motor.\u00a0 Was it the non conductive coating that the motor deposited on the electrodes? Did the blown out fragments of copper short across the electrodes? Is the [&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-2604","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2604"}],"version-history":[{"count":0,"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2604\/revisions"}],"wp:attachment":[{"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jpaerospace.com\/new_wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}