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Published byDiane Melissa Blair Modified over 8 years ago
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3/19/09
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Animal Motor Works (AMW) K475WW High Power Rocket Motor. 54 mm casing, 40.3 cm long, 2.9 seconds burn time, 1394 N-sec total impulse, and 474.2 Newtons average thrust.
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Rocket flight stability in Rocksim static margin diagram The stability margin is 3.45
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Thrust to weight motor selection in flight simulation 474 N average thrust 221 oz
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Rail exit velocity Launch guide length: 96.0000 In. Velocity at launch guide departure: 60.3 ft/s
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Parachute sizes and descent rates The drogue parachute parachute was built by Ernie Puckett and descent rate is 88 ft/s. The hemispherical main parachute was donated by Edward Warinski of Alpha Hybrids. Velocity at landing: Vertical: 17 ft/s. 54inches in diameter with 8 inch spill hole.
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Test plans and procedures The first flight of our scale model occurred January 17, 2009. The full scale rocket was flown on March 14, 2009 Video footage from March 28:
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Full-sized final rocket flight test
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Dual deployment avionics test We successfully tested the avionics in both rockets and we are using the same equipment in the full sized rocket with an added G-Wiz flight computer back up system.
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Ejection charge amount test We used.75 grams of black powder in the scaled down rocket. We calculated this using the uroc.org black powder calculation website: http://uroc.org/index.php?option=com_wrapper&Itemid =628 http://uroc.org/index.php?option=com_wrapper&Itemid =628 We used 1.4 grams of black powder for the drogue parachute and 1.7 grams of black powder for the main parachute. We used the black powder calculator on: http://www.info-central.org/recovery_powder.shtml http://www.info-central.org/recovery_powder.shtml
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Payload integration feasibility Camera bay hatch. "Record" access hole added to hood. Transmitting GPS donated as a loaner. Small logging GPS and a sonic locator optional.
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