http://www.pegasushabproject.org.uk/wiki/ 2010-07-30T09:27:21+01:00 http://www.pegasushabproject.org.uk/wiki/ http://www.pegasushabproject.org.uk/wiki/lib/images/favicon.ico text/html 2010-07-12T07:41:57+01:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo:ballasthalo5?rev=1278916917&do=diff Introduction BallastHalo 5 is the most recent payload in a series of launches to test ballast tank concepts in anticipation of a trans-atlantic balloon launch. A successful trans-atlantic launch would require the ability to drop ballast at night to counteract the loss of helium from the ZP balloon during the day. text/html 2010-07-11T11:49:34+01:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/start?rev=1278845374&do=diff Updates * BallastHalo 5launched - landed in North Sea however ballast tanks worked. * BallastHalo 5 Launch postponed until 10/07/10 @ 18:00UTC from Churchill College, Cambridge - latex floater to test ballast tanks. * Pegasus VII launched 17/06/10 12:00BST - worked really well and was recovered nr Bedford - more info from UKHAS wiki Launch Page * Pegasus VII launch Thurs 17/6/10 ~11:00BST from Churchill, Cambridge - follow on spacenear.us, RTTY and SSTV on 434.075Mhz - more info can be … text/html 2010-07-11T02:23:09+01:00 James Coxon http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo?rev=1278811389&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…