Sojourner Explorer Post 1010
Lockheed Martin Exploring Program
Launch - November 20, 2010
 
Victoria Crater

Project Home

CATOed RocketEight 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.

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)

Altimeter Data

Pictures
Black Rocket    Red Rocket    Blue Rocket
Loading Black Rocket
Loading Black Rocket
Loading Red Rocket
Loading Red Rocket
Loading Black Rocket
Loading Blue Rocket
Bernadette's Birthday
Party
Party at McDonald's
Party
CATO Results
CATOed Rocket

Copyright 2010 Lockheed Martin Exploring Program
Updated: December 20, 2010