{"id":343,"date":"2011-01-02T14:31:14","date_gmt":"2011-01-02T21:31:14","guid":{"rendered":"https:\/\/aiaaocrocketry.org\/?page_id=343"},"modified":"2011-04-25T21:34:35","modified_gmt":"2011-04-26T04:34:35","slug":"sli-videos","status":"publish","type":"page","link":"https:\/\/aiaaocrocketry.org\/?page_id=343","title":{"rendered":"SLI Videos"},"content":{"rendered":"

This page includes videos taken that involve major events in the SLI project. This includes launches that we have done as well as testing of the black powder charges and the altimeter.\u00a0 Click on the photos to the left of the text to start the .wmv file video.<\/p>\n

HUNTSVILLE LAUNCH VIDEOS (April 17, 2011)<\/strong><\/p>\n

\"\"<\/a>This 18.5 MByte video shows the launch of the full scale rocket at Bragg Farms near Huntsville, AL.\u00a0 This launch used a Cesaroni K635 Red Lightning motor carrying the full recover electronics and payload.\u00a0 The rocket travelled to\u00a0over 5,500 feet.\u00a0 Both\u00a0drogue and main deployed as planned –\u00a0after each of these parachutes deploy you can see\u00a0a second puff of smoke as the back-up electronics fire their charges.\u00a0 They payload tested the latency time of writing to a conventional electro-mechanical hard drive (NOT a solid state drive) under the “G” forces during the flight. <\/strong><\/p>\n

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This 10 MByte video shows the interview of the team during the live streaming via\u00a0USTREAM (the day was recorded in several segments and may still be present at http:\/\/www.ustream.tv\/channel\/nasa-msfc<\/a>\u00a0).\u00a0<\/p>\n

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FULL SCALE ROCKET (4″ DIAMETER 84″ TALL)<\/strong><\/p>\n

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This\u00a010.7 MByte video shows the\u00a0first flight of the full sized\u00a0rocket using a Cesaroni 1597K400-14A Green Motor with the motor ejection charge remaining as a back-up.\u00a0 This flight carried\u00a0the full electronics – a G-Wiz partners HCX and\u00a0Perfectflite MAWD flight computers on board to deploy the drogue and main parachutes.\u00a0 In addition the\u00a0scientific payload was on board.\u00a0 All four ejection charges fired.\u00a0 The\u00a0drogue successfully ejected\u00a0at apogee (plus 2 seconds) and the main fired at 900 ft, but the parachute did not fully eject.\u00a0The rocket reached an altitude of 3339 feet, the wind was very strong at about 15MPH.\u00a0 Despite the relatively hard landing, there was no damage to the rocket except two plastic tabs on the 9V battery holders broke.\u00a0 We launched this rocket at Lucerne Dry Lake during the March ROC launch.<\/p>\n

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\nThis\u00a07 MByte video shows the\u00a0first full sized rocket launch (above) from the full sized\u00a0rocket’s point of view.\u00a0 We taped a small video camera on to the side of the rocket so we could see the earth fall away from the rocket’s point of view.<\/p>\n

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This\u00a011.3 MByte video shows the\u00a0second flight of the full sized\u00a0rocket using a\u00a0Cesaroni 1596K500-18A Red Lightning Motor with the motor ejection charge remaining as a back-up.\u00a0 This flight carried\u00a0the full electronics – a G-Wiz partners HCX and\u00a0Perfectflite MAWD flight computers on board to deploy the drogue and main parachutes.\u00a0 In addition the\u00a0scientific payload was on board.\u00a0 All four ejection charges fired.\u00a0 The\u00a0drogue successfully ejected\u00a0at apogee (plus 2 seconds) and the main fired and ejected at 900 ft.\u00a0The rocket reached an altitude of\u00a04090 feet, the wind was moderate at about 5-8MPH.\u00a0 We launched this rocket at\u00a0Plaster City\u00a0during the April Tripoli San Diego launch.<\/p>\n

For the following two black powder charge tests, we used the pressure table at\u00a0http:\/\/www.info-central.org\/?article=303<\/a>\u00a0and the\u00a0ejection charge calculator at http:\/\/www.aeroconsystems.com\/tips\/Ejection_ChargeCalc.xls<\/a>\u00a0.\u00a0 Tests were conducted by connecting a 15 foot wire to the ejection charge terminals in the avionics bay – fed through an altimeter port hole, and wiring the black powder charges as if the electronics were present.\u00a0 The other end of the15 foot wire was connected to a 9 volt battery to activate the charge.<\/p>\n

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This 1.7MB video shows our\u00a0black powder ejection charge test for the\u00a0main parachute on the 4″ Full scale\u00a0Black Brant rocket.\u00a0 As you can hear from the countdown, we are a truly international team learning together while having fun.\u00a0 We wanted to develop 200lbs of force against the bulkhead (cross section area of 12.6 square inches) for our three #2 nylon screw shear pins, which requires 28psi each.\u00a0 The length of the\u00a0main parachute body tube is 17″.\u00a0 This required 1.74 grams of black powder.<\/p>\n

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This 2.8MB video shows our\u00a0black powder ejection charge test for the\u00a0drogue parachute on the 4″ Full scale\u00a0Black Brant rocket.\u00a0\u00a0We wanted to develop 200lbs of force against the bulkhead (cross section area of 12.6 square inches) for our three #2 nylon screw shear pins, which requires 28psi each.\u00a0 The length of the\u00a0drogue parachute body tube is 17″ – same as for the main.\u00a0 This required 1.74 grams of black powder.<\/p>\n

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This 1.4MB video shows our\u00a0final black powder ejection charge test for the\u00a0main parachute on the 4″ Full scale\u00a0Black Brant rocket.\u00a0 On our first full scale flight, the main did not fully deploy – so more testing was needed – this time with the main in place.\u00a0 We made several changes – packing the parachute tighter and wrapping the shroud lines around it to keep it packed, moving the ejection charge, moving the attachment point, changing the Nomex shield wrap.\u00a0\u00a0And we increased the blackpowder charge to 2.0 grams to develop\u00a0250lbs of force against the bulkhead.<\/p>\n

SCALE ROCKET (2.6″ DIAMETER 62″ TALL)<\/strong><\/p>\n

<\/a>\"\"<\/a><\/p>\n

This 16 MByte video shows the first flight of the scale model rocket, the rocket used a Cesaroni 276H152-15A Blue Streak Motor drilled to an 8 second delay and had a MAWD flight computer on board, but not set for ejection charges. The rocket reached an altitude of 1938 feet, the wind was calm (2 mph).\u00a0 This launch was with the San Diego Tripoli near Plaster City, California.<\/p>\n

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This 9 MByte video shows the\u00a0second flight of the scale model rocket, the rocket used\u00a0the same\u00a0Cesaroni 276H152-15A Blue Streak Motor with the ejection charge removed and had an MAWD flight computer on board to deploy the drogue and main parachutes. The\u00a0drogue successfully ejected\u00a0at apogee (plus 2 seconds) but because of we did not use shear pins on the body tube with the main (planned, but it was declared not necessary on such a small rocket by the help we received at the launch), it\u00a0deployed with the drogue.\u00a0The rocket reached an altitude of 1749 feet, the wind was calm (2 mph).<\/p>\n

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This\u00a08.7 MByte video shows the\u00a0third flight of the scale model rocket, the rocket used\u00a0the same\u00a0Cesaroni 276H152-15A Blue Streak Motor with the motor ejection charge remaining as a back-up\u00a0and had an MAWD flight computer on board to deploy the drogue and main parachutes. The\u00a0drogue successfully ejected\u00a0at apogee (plus 2 seconds) and the main at 900ft.\u00a0The rocket reached an altitude of 1581 feet, the wind was calm.<\/p>\n

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This\u00a07.8 MByte video shows the third scale model launch (above) from the scale rocket’s point of view.\u00a0 We taped a small video camera on to the side of the rocket so we could all “go for a ride”.<\/p>\n

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For the following two black powder charge tests, we used the pressure table at\u00a0http:\/\/www.info-central.org\/?article=303<\/a>\u00a0and the\u00a0ejection charge calculator at http:\/\/www.aeroconsystems.com\/tips\/Ejection_ChargeCalc.xls<\/a>\u00a0.\u00a0 Tests were conducted by connecting a 15 foot wire to the ejection charge terminals in the avionics bay – fed through an altimeter port hole, and wiring the black powder charges as if the electronics were present.\u00a0 The other end of the15 foot wire was connected to a 9 volt battery to activate the charge.<\/p>\n

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This 7MB video shows our\u00a0black powder ejection charge test for the main parachute on the 2.6″ scale model Black Brant rocket.\u00a0 We wanted to develop 150lbs of force against the bulkhead (cross section area of 5.3 square inches) for our #2 nylon screw shear pins, which requires 28psi.\u00a0 The length of the main parachute body tube is 13.3″.\u00a0 This required 1.01 grams of black powder.<\/p>\n

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This 4MB video shows our\u00a0black powder ejection charge test for the\u00a0drogue parachute on the 2.6″ scale model Black Brant rocket.\u00a0 We wanted to develop 150lbs of force against the bulkhead (cross section area of 5.3 square inches) for our #2 nylon screw shear pins, which requires 28psi.\u00a0 The length of the drogue parachute body tube is 15.1″.\u00a0 This required 1.14 grams of black powder.<\/p>\n

OTHER TESTING<\/strong><\/p>\n

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This 11 MB video shows our test of the\u00a0flight computer, we built a vacuum chamber from an old pickle jar.\u00a0 We drilled a hole in the top and added some plumbing out to a clear plastic hose.\u00a0 We programmed an MAWD flight computer to have the drogue e-match to fire at apogee and the main ematch to fire at 900 ft.\u00a0 In our simulation we replaced the e-matches with Christmas tree bulbs.\u00a0 We created a vacuum by sucking on the tube and watched how the flight computer lit the bulbs when the e-matches were programmed to fire.<\/p>\n

WEBEX PRESENTATION TO MARSHALL SPACE FLIGHT CENTER<\/strong><\/p>\n

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This 210 MB Video (35 minutes long)\u00a0is of the WebEx between the AIAA OC Section SLI Team and technical members at Marshall Space Flight Center.\u00a0 Each SLI Team is required not only to write several design reviews, but also present them to the technical team at Marshall.\u00a0 This video is of the WebEx on February 7, 2011 where the team presented their Critical Design Review.\u00a0 The PowerPoint being presented can be found under the SLI 2010-2011 tab on the Documents page.<\/p>\n","protected":false},"excerpt":{"rendered":"

This page includes videos taken that involve major events in the SLI project. This includes launches that we have done as well as testing of the black powder charges and the altimeter.\u00a0 Click on the photos to the left of the text to start the .wmv file video. HUNTSVILLE LAUNCH VIDEOS (April 17, 2011) This … Continue reading SLI Videos<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":13,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/pages\/343"}],"collection":[{"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=343"}],"version-history":[{"count":73,"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/pages\/343\/revisions"}],"predecessor-version":[{"id":353,"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/pages\/343\/revisions\/353"}],"up":[{"embeddable":true,"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=\/wp\/v2\/pages\/13"}],"wp:attachment":[{"href":"https:\/\/aiaaocrocketry.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}