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3/19/09. Flight Readiness Review. 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. Motor Selection. Rocket flight stability in Rocksim static margin diagram.
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3/19/09 Flight Readiness Review
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. Motor Selection
Rocket flight stabilityin Rocksimstatic margin diagram • Thestability margin is 3.45
Thrust to weightmotor selectionin flight simulation • 474 N average thrust • 221 oz
Rail exit velocity • Launch guide length: 96.0000 In. Velocity at launch guide departure: 60.3 ft/s
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.
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:
Dual deploymentavionics 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.
Ejection chargeamount 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 • 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
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.