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On Saturday, March 15, nine members from all four teams traveled to a Great Meadows VA launch site for qualification flights. The weather changed considerably
during the launch. When
we arrived, it was nice (50d) and almost no wind. Two hours later the wind was 14mph.
We conducted 8 flights - two for each team. We used the 7ft launch rail with a 6d angle. Team 14210 used the site
provided launch rail. Team 14212's green rocket landed in a tree, and they could not
complete their qualification flight.Objectives
Two launches for each team, test or qualification flights:
Team 14209 - new rocket, motor E28-7T/F30-6FJ
Team 14210 - single use motor E20-7W
Team 14211 - reloadable motor
F30-6FJ
Team 14211 - reloadable motor E28-7T
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(no picture of Team 14209 black rocket) |
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Lessons
- Team 14209 tried out their new rocket with an E28-7W, and then an
F30-6FJ. They need to settle on a weight for either motor. Qualification time is running
out.
- Team 14211 had two launches with the E20 motor over 825ft. Their descents were
strange - the first one really floated, so they put a two inch spill in both. In the second flight one
chute didn't deploy and tone egg broke on landing. They need to practice their chute packing.
- Team 14210 had two nice flights and completed their qualification
flights. The flights were nice but a little high and the second one floated a little. They
switched motor lot numbers for the second flight. They may have had inconsistency in the
motors.
- Team 14212 conducted two flights with an E28-7W motor. Both were a little
low and the second one came down very fast. It landed in a tree and could not be counted as
a qualification flight. We recovered the rocket the next day and thankful it didn't count..
- The wind caused problems with the descent times. There was considerable
vertical air movement and the rockets floated down in the strong wind.
- We traveled back to the launch site on Sunday, March 16, to recover Team
14212's rocket. We used an arrow with a fishing line attached, shot over the branch. We
attached a 200ft rope to the arrow end of the fishing line and reeled in the line. The rope
went over the branch. We pulled down and ripped the rocket off the branch. Everything was
recovered with minor damage
Team 14211 has completed their qualification lunches with an average of 40.15 on their two
best launches. Because of their flight in February, they finish with a score of 39.15. The other three teams
have two flights left, but time is growing very short.
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Launches
Rocket |
Engine |
Rail |
Cargo |
Recovery |
Weight |
Results |
Comments |
Black flight 1
Team 14209 |
E28-7W |
7ft 6d |
2 eggs,
altimeter 6 |
2-15" Round |
423g |
754ft,
57ec |
video, nice flight but too low, floating descent |
Black flight 2
Team 14209 |
F30-6FJ |
7ft 6d |
2 eggs,
altimeter 6 |
2-15" Round |
470g? |
882ft,
50sec |
video, nice flight but too high |
Blue flight 1
Team 14211 |
F30-6FJ |
7ft 6d |
2 eggs,
altimeter 5 |
2-15" Round |
482g |
845ft,
46.16sec |
video, nice flight,
Qualification Score: 27.26 |
Blue flight 2
Team 14211 |
F30-6FJ |
7ft 6d |
2 eggs,
altimeter 5 |
2-15" Round |
490g |
873ft,
56.61sec |
video, nice flight, but too high
Qualification Score: 74.44 |
India flight 1
Team 14210 |
E20-7W |
7ft 3d |
2 eggs,
altimeter 1 |
2-15" Round |
354g |
833ft,
80sec |
video, nice flight, but really floated |
India flight 2
Team 14210 |
E20-7W |
7ft 3d |
2 eggs,
altimeter 1 |
2-15" Round
2" Spill |
354g |
861ft,
31sec |
video, only one chute deployed, descended fast, egg broke
Qualification Score: 104 DQ |
Green flight 1
Team 14212 |
E28-7T |
7ft 6d |
2 eggs,
altimeter 4 |
2-15" Round |
419g |
788ft,
47ec |
video, nice flight, but low |
Green flight 2
Team 14212 |
E28-7T |
7ft 6d |
2 eggs,
altimeter 4 |
2-15" Round |
417g |
772ft,
34.92sec |
video, too low, descended too fast,
landed in tree, recovered next day
Qualification Score: Didn't Count |
Altimeter Data
(Excel format)
Pictures
Preparation
More Preparation
And More Preparation
Loading the Rocket
Teams 14210
Team 14211
Teams 14212
Rocket in a Tree
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