3/19/09

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 Newtons average thrust.

Rocket flight stability in Rocksim static margin diagram  The stability margin is 3.45

Thrust to weight motor selection in flight simulation  474 N average thrust  221 oz

Rail exit velocity  Launch guide length: 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,  The full scale rocket was flown on March 14, 2009  Video footage from March 28:

Full-sized final rocket flight test

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.

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: =628 =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:

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.