|
Members
of all thee teams traveled to the Maryland launch site. It was
clear, a little cool, but almost no wind. We had some successes,
and some problems. No eggs were broken. This was our last
test launch. Next week we start qualification launches!
Objectives
- Flight test RPE (team 7157) with F40-4T
and -7T reloadable and adjust the weight.
- Flight test different configurations
of the Phoenix (team 7159) with F39-6T reloadable.
- Flight test the Kaboom (team 7158)
with F52-5T reloadable, with different timer ejections.
- Build and use a second launch rail.
Lessons
- The 2nd launch rail worked OK, liked
the blast deflector.
- If you have a false launch on the
altimeter, you may loose one launch data set.
- The RPE needs to use longer delay for
apogee (-7T). Also needs a bigger chute or put more weight into
the booster, not the nose cone. It also wobbled - need to make sure
the connection between cargo and booster is firm.
- The Phoenix needs to be 500 grams.
You must not wrap the streamer.
- The Kaboom needs to have a longer
delay (-8T).
RPE
Kaboom
Phoenix
Launches (altimeter
data)
|
Rocket |
Engine |
Cargo |
Chute |
Weight |
Results |
Comments |
Kaboom
Launch 1 |
F52-5T |
egg,
altimeter G |
24" choke and
15" |
777g |
623ft, 50sec
(video) |
Nice flight until early ejection, nose
cone came off, timer ejection at 4.6sec failed to fire because
wire loose, DQ. |
Kaboom
Launch 2 |
F52-5T |
egg,
altimeter G |
24" choke and
15" |
777g |
about 600ft,
18sec
(video) |
Straight flight, but early ejection
again, cargo chute broke off, timer ejection at 4.6sec fired,
altimeter battery came out and lost data, DQ. |
RPE
Launch 1 |
F40-7T |
egg,
altimeter G |
24"X and
15" |
832g |
784ft, 37sec
(video) |
Nice flight, but we lost the altimeter
data because it was overwritten, Score 50. |
RPE
Launch 2 |
F40-4T |
egg,
altimeter G |
24"X and
15" |
845g |
552ft, 29sec
(video) |
Nice flight, but early ejection, came
down too quick. |
RPE
Launch 3 |
F40-4T |
egg,
altimeter G |
24"X and
15" |
760g |
591ft, 31sec
(video) |
A little cork screw and early ejection again,
maybe move some weight from the nose cone to the booster. |
Phoenix 3
Launch 1 |
F39-6T |
egg,
altimeter C |
16" and
4x60 streamer |
479g |
795ft, 47sec (video) |
Nice flight, but streamer didn't
deploy, used light cargo with heavy nose cone, Score 49. |
Phoenix 3
Launch 2 |
F39-6T |
egg,
altimeter C |
16" and
4x60 streamer |
522g |
681ft, 39sec (video) |
Nice flight, but too heavy, used heavy
cargo with heavy nose cone, Score 81. |
Chris Special
Launch 1 |
F24-4W |
altimeter 2 |
16" and
4x60 streamer |
458g |
789ft, 25sec (video) |
A little cork screw, broke into three
parts, all recovered. |
Pictures |
