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On Monday, February 17, five members from two teams traveled to a Maryland park in Walkersville to practice
launches and get an early qualification flight registered. We invited a NAR observer to score the flights.
It was a nice sunny day, no wind, but cold, about 30f. We used the 7ft launch rail, set straight up.
Team 14212 completed two launches, one for qualification. Team 14211 had a catastrophic failure
with their first flight and was not able to have a qualification flight.Objectives
- Try two launches for each team, a test flight and a qualification flight:
Team 14211 - single use motor F30-6FJ
Team 14212 - reloadable motor
E28-7T
- Try out a new launch site.
Lessons
- The launch site looked very nice and could help us in the future.
- The green rocket (team 14212) had two nice flights. They were very straight (no wind)
and landed close to the launch site. No igniter failures, or spitting. No tangled chutes, great
altitude. All they need is another nice qualification flight. They are still coming down a little fast,
maybe because of the cold air.
- Team 14211 (blue rocket) had a motor failure as it left the launch rail.
It was very disappointing, but they do have a week to rebuild and fly on the weekend to get
an early qualification launch.
- The failure was with the motor burning through the ejection charge
immediately. For a moment, the gasses were expelling from both ends at the same time. The
booster segment was destroyed and we lost the parachutes. But the cargo and altimeter
segment was OK and can fly again. We need to decided if we will trust another F30 motor or
switch to another motor.
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Launches
Rocket |
Engine |
Rail |
Cargo |
Recovery |
Weight |
Results |
Comments |
Blue flight 1
Team 14211 |
F30-6FJ |
7ft 0d |
2 eggs,
altimeter 5 |
2-15" Round |
449g |
0ft,
0sec |
video, motor failed as it left rail |
Green flight 1
Team 14212
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E28-7T |
7ft 0d |
2 wood eggs,
altimeter 3 |
2-15" Round |
421g |
831ft,
46ec |
video, Straight flight, nice score |
Green flight 2
Team 14212 |
E28-7T |
7ft 0d |
2 wood eggs,
altimeter 3 |
2-15" Round |
423g |
822ft,
43.34sec |
video, Straight flight
Qualification Score: 21.64 |
Altimeter Data
(Excel format)
Pictures
Team 14211
Rocket Destroyed
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