IPB

Welcome Guest ( Log In | Register )

BallastHalo 4 - Long duration balloon flight from UK (13/2/10)
james_coxon
post Feb 10 2010, 02:23 PM
Post #1


Newbie
*

Group: Members
Posts: 8
Joined: 5-May 08
Member No.: 4109



Hi UMSF users,

Just to say that we are planning a long duration balloon flight to be launched this Saturday (13/2/10) from EARS, Cambridgeshire, UK at 15:00UTC. The flight is part of a series of flights to test ballast tank concepts which will eventually be used on a trans-atlantic flight that we are in the process of designing and constructing. Unlike normal flights (up, burst, down) we'll attempt to get the balloon to float at an altitude of ~ 20km by placing a pinhole vent in the balloons neck and also careful launch to correspond with sunset once we reach altitude. Once the payload achieves float it will test the ballast tanks releasing 100ml out of a total of 500mls, this should cause the payload to start ascending again and will either continue to burst or resume floating just at a higher altitude (and then we'll dump again) therefore providing some more info into this phenomenon of floating but more importantly showing that the tanks and pump work in this extreme environment.
Downlink will be in the form of a 434.073Mhz 10mW transmitter which will be broadcasting RTTY (50baud, 350shift, ASCII-8, no parity, 1.5stop) data including position, altitude, ascent rate, float time, internal temperature, pump temperature, external temperature, external light intensity and ballast volume. There will also be a backup beacon broadcasting CW on 434.075Mhz.
Current forecasts have the balloon traveling W from Cambridge then turning S passing into the channel above Portsmouth and then onto France.

As in previous flights if you want to follow the flight the track will be displayed on http://spacenear.us/tracker and chat will be on #highaltitude on irc.freenode.net

If anyone has a a 70cm SSB capable radio roughly along the flight path and would like to help out please get in touch as we need as many listeners as possible especially in France - I'm sure Doug will be listening - attempting to break his last Rx record of 420km

For more information see http://www.pegasushabproject.org.uk/wiki/d...lo:ballasthalo4 , at the bottom of the page is the current flight trajectory. Updates will also be on twitter http://twitter.com/jamescoxon

James
M6JCX
http://www.pegasushabproject.org.uk
Go to the top of the page
 
+Quote Post
 
Start new topic
Replies
djellison
post Feb 20 2010, 05:12 PM
Post #2


Administrator
****

Group: Chairman
Posts: 13806
Joined: 8-February 04
Member No.: 1



Well - I'm listening - but sadly it lost GPS lock after about 2km, so we're just getting temps back from it. Concurrently listeners from Holland, and here in the UK.
Go to the top of the page
 
+Quote Post

Posts in this topic


Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 25th October 2014 - 04:16 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.