Sojourner Explorer Post 1010
Lockheed Martin Exploring Program
Launch - August 21, 2010
Victoria Crater

Team Two members traveled to the Maryland launch site on Saturday, August 21, to test various TARC 2011 recovery techniques.  It was a nice warm day with little wind. We used the old launch rail and rocket parts from last spring.


  • Try some rockets with a 15in parachute recovery system.
  • Get some data on descent rates for 15in chutes.
  • Use up some motors from the last TARC project.


  • The descent rates for the 15in chutes were very appropriate for TARC 2011 requirements - 750ft and 40-45sec.
  • The 15in chutes may need a spill hole.
  • The E30 motors seem good for under 400g rockets
  • We will be able to use designs and material from last spring for TARC 2011.
  • If we have separate recovery for cargo and booster, we need separate weights recorded.
  • Bob needs to set camera focus manually.
  • Ejection times of 4 seconds are before apogee and 7 seconds are after apogee.


Rocket Engine Cargo Cargo Recovery Booster Recovery Weight Results Comments
test 1
E30-4T egg,
altimeter F?
15" chute 12' chute 413g 720ft, 54sec
Nice flight
E30-7T egg,
altimeter G?
15" chute 12' chute 380g 760ft, 48sec
Very nice flight, spike in recorded data

Altimeter Data (Excel format)

Altimeter Data

    White Rocket

Copyright 2010 Lockheed Martin Exploring Program
Updated: August 21, 2010