http://www.pegasushabproject.org.uk/wiki/ 2010-03-11T18:39:25+00:00 http://www.pegasushabproject.org.uk/wiki/ http://www.pegasushabproject.org.uk/wiki/lib/images/favicon.ico text/html 2010-02-25T15:49:12+00:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo:ballasthalo4?rev=1267112952&do=diff Launch Attempt 2 * BallastHalo 4 re-launch - 20/2/10 15:00UTC from Churchill College * * Current flight paths: <http://maps.google.com/?q=http://www.pegasushabproject.org.uk/kml/02201500-all3.kml> * Payload in good condition after aborted flight (13/2/10) - just need to change batteries and reseal text/html 2010-02-23T21:24:27+00:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo:ballasthalo5?rev=1266960267&do=diff Aims * Properly test ballast tanks, demonstrate a change in ascent rate after dropping ballast (not necessarily during a float but will be more obvious.) * Float the balloon rather then a normal up/down flight * Recruit multiple users of dl-fldigi in anticipation of a trans-atlantic flight text/html 2010-02-23T21:05:17+00:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/start?rev=1266959117&do=diff Image from the Pegasus III flight showing the moon. For images from the memory card of the cameras (better quality) check out my flickr account. Updates * BH4 - landed in the Netherlands - has been recovered by PD3EM! * BallastHalo 4 relaunch 20/2/10 15:00UTC from Churchill College * BallastHalo 4 launch failed - insufficent lift meant did not take off and instead dragged the payload, we intercepted and burst the balloon, payload survived, flight has been postponed. * BallastHalo 4… text/html 2010-02-21T09:20:07+00:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo?rev=1266744007&do=diff Aim * To test the ballast system espcially the X-valves that we are using on the Atlantic Halo missions. * The mission will use a latex balloon with a small vent in the neck, over time the amount of helium will decrease therefore reducing the lift, this will causes the ascent rate to decrease. * Using the ballast system it should be possible to drop ballast to compensate for the loss of helium causing the balloon and its payload to float. * After a period of time the ballast system wil…