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On Wednesday, December 31, three members from team 15-406 traveled to the Walkersville Farm site for test launches. It was clear, wind about 8mph, but very cold - below freezing. We conducted two launches of their blue rocket. Objectives
- Several launches to find the proper weight for an F44-8W motor.
- Try a 15in parachute for the cargo unit to reduce descent time.
- Try a 3in spill hole to reduce oscillation..
Lessons
- We increased the weight to 490g and got two flights just a little below the target of 800ft. In a windy day, we might need to go around 480g..
- The 15 inch chutes did not slow the descent enough. We might need an 18" round or X chute..
- Team 15406 worked well together.
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Launches
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Rocket |
Engine |
Rail |
Cargo |
Recovery |
Weight |
Results |
Comments |
Blue flight 1
Team 15406 |
F44-8W |
7ft 0d |
1 egg,
altimeter 7 |
15"Round/3"Spill
6x60"Streamer |
490g
280g |
794ft,
32sec |
video, nice flight but chute/streamer tangled, down too fast |
Blue flight 2
Team 15406 |
F44-8W |
7ft 0d |
1 egg,
altimeter 7 |
15"Round/No Spill
6x60"Streamer |
490g
280g |
796ft,
35sec |
video, nice flight but too high |
Altimeter Data
(Excel format)
Pictures
The launch field
Team 406
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