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Eight members traveled to the Maryland launch site on
Saturday, November 20, to test some new parachutes and give
some new members a launch experience. It was a partly cloudy day with
varying wind speeds (8mph to almost calm). We setup both launch rails
but only used the new (tall) one. We conducted five
launches. We left one booster in a tree, and one
booster had a CATO. But we had three nice flights with
the hemispherical parachutes.
The teams celebrated Bernadette's birthday at McDonalds.
And Ted flew his Bat Rocket for one final flight (video).
Objectives
- Try out the new hemispherical
chutes with spill hole.
- Give some new members experience with the
launch process..
- Continue testing with the E30 motors for under
400g rockets.
- Try recovery of booster and cargo units with one
chute.
Lessons
- The hemispherical chutes worked great. They
appear to have less wind drift.
- The descent rates are too slow if you deploy at
apogee. We need to come up with ideas here.
- The chute was too tightly wrapped on second Red
rocket flight. Full deployment was delayed.
- The CATO with the E30-7T may have been
caused by the Quest Q2G2
igniters. We need more research. We also need to report
the CATO to NAR and Aerotech.
- The E30 motors seem to reach
750ft with 400g in light wind. The F24 will be needed if we go
over 400g.
- When you have a separate booster recovery,
always use a very small chute or streamer for the booster.
- We need to return to the launch site to try a
recovery of the Black rocket booster.
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Launches
Team |
Rocket |
Engine |
Cargo |
Cargo Recovery |
Booster Recovery |
Weight |
Results |
Comments |
9212 |
Black
test 1 |
F24-4W |
egg,
altimeter E |
15in chute |
14in chute? |
446g |
813ft, 29sec
(video) |
Cargo came down too fast. egg broke, booster drifted into tree |
9215 |
Red
test 1 |
E30-7T |
egg,
altimeter G |
15in hemi-chute |
attached |
360g |
858ft, 29sec
(video) |
Nice flight, hemi chute didn't drift |
9215 |
Red
test 2 |
E30-7T |
egg,
altimeter E |
15in hemi-chute |
attached |
371g |
822ft, 44sec
(video) |
Nice flight, chute came out, but deployed late |
9214 |
Blue
test 1 |
E30-4T |
egg,
altimeter
C |
15in hemi-chute |
attached |
352g |
700ft, 48sec
(video) |
Nice flight, altimeter spike to 738ft |
9214 |
Blue
test 2 |
E30-7T |
egg,
altimeter C |
15in hemi-chute |
attached |
360g |
0ft, 0sec
(video) |
CATO on the rail, need new booster |
Altimeter Data
(Excel format)
Pictures
|
Loading Black Rocket
|
Loading Red Rocket
|
Loading Black Rocket
|
Bernadette's Birthday
|
Party at McDonald's
|
CATO Results
|
|