Pour mettre un peu de logique, dans ces activités ballons, nous distinguons parmi ce qui existe:
--- les montgolfières habitées: pilotes licenciés
--- les radiosondes: centres météorologiques
--- les ballons-radioamateurs: fabriqués et lancés par des radioamateurs, avec ou sans les écoles
--- les ballons écoles ou UBPE: fabriqués par les écoles et lancés par Planète-Sciences, avec ou sans les radioamateurs pour la récupération de la nacelle
--- les ballons captifs: tout public
--- les ballons en salle: captifs ou non, tout public
--- les ballons scientifiques ou expérimentaux: lancés par le CNES
--- les ballons militaires:
--- .......
Si vous avez des remarques au sujet de cette classification: contactez moi f6agv AT free.fr
Est-elle complète?
Dans l'intérêt de tous, et particulièrement pour les journalistes et les rédacteurs de blogs, il serait assez
sympa de ne pas mélanger ces catégories: il y a ballon et ballon, on ne peut pas tout mélanger...
Les Clubs du QUEBEC ou des USA préparent une première traversée de l' Atlantique par ballon, le type de ballon est dans la catégorie " BALLONS-RADIOAMATEURS " puisque ce sont des radioamateurs qui sont à la base de ces projets.
Voici l'annonce paru concernant le club : WHITE STAR BALLOON TEAM
Objet: Il y a de la compétition, ça va être intéressant a suivre
Hello all,
White Star's SpeedBall-1 flight and ground systems are are
expected to be ready to fly within 2 days.
This flight is no longer a test flight, but a full trans-atlantic crossing
attempt. That means we'll likely be inserting it into the very next Jet
Stream trans-atlantic crossing opportunity that occurs. We're targeting
<36h crossings, but the payload is designed to >72hr longevity in the air,
so we may take a longer crossing if needed.
Launch will occur around 8PM Eastern Time from Space Port Indiana, in
Columbus IN. SpacePort Indiana has graciously arranged for PraxAir to
donate all helium for trans-atlantic attempts free of charge.
Launch Date will be announced 2-4 days in advance of the Jet Stream's
arrival. Please sign up for launch notification on our main home page to be
sure you don't miss it - <http://www.whitestarballoon.org>
http://www.whitestarballoon.org on the right side.
Primary telemetry is through the Orbcomm VHF 2 meter two-way satellite data
network - we'll talk more about Orbcomm later, but it looks to be excellent
for amateur LDB flights. (Not for short flights!) This flight will
certainly test that.
Balloon envelope is an unknown volume zero pressure balloon, 2 mil
polyethylene, built and modified by Mark Caveizel's Global Western company,
requested to float at 250mb (~34000 ft).
Ballast will be just under 6lbs of alcohol, using the Pneuaire 12v super
lightweight solenoid valve. (if you use this, you need to cycle it at least
once per hour to keep it from seizing in the cold)
Sensors of note:
* Helium Temp -xbee wireless sensor inside to measure helium gas
temperature at the top of the envelope to determine solar heating. Most
important data of the flight here.
* Cloud Ice particle sensor - the SparkFun Dust Sensor, mounted with
pass-thru port vertical, 20cm away from payload box on a carbon fiber boom
(this is to detect cloud density, as well as determine if we're getting
snowed on, as the French CNES balloons did in the jet stream in the 1960s)
* Rel Humidity + Ambient Temp - this will allow us to calculate the
FROST POINT, the temperature at which frost will form on surfaces such as a
balloon. This is protected from solar radiation absorption by a custom
infrared shield made on a MakerBot. Another very important data point here.
HF radio on board built by Bill Brown, WB8ELK. This will be transmitting at
remotely controllable rate, possibly as low as 1 per hour to as often as
every few minutes. If you've listened to any of Bill's recent HF flights,
you've been listening to the test flights of this transmitter design. The
UKHAS group in the United Kingdom will be coordinating all HF listeners and
information for the SpeedBall flights. Please see the following page for
more info
<http://wiki.whitestarballoon.com/doku.php?id=hardware:radio:hf:wb8elkwhitestarn17>
http://wiki.whitestarballoon.com/doku.php?id=hardware:radio:hf:wb8elkwhitestarn17
, and the #highaltitude chat room on <http://irc.freenode.net>
http://irc.freenode.net
We have extensive uplink control ability of this balloon, and will be
adjusting telemetry rates and resetting the cutdown heartbeat timer that
will cutdown the balloon in the event of uplink comm loss.
Anyone in the area (Taylor, Stratostar, others?) is welcome to come to the
launch at SPI, it's near Indianapolis. This is the first launch for this
group, so they will be a little unsure on the launch procedures, but have
been drilled on how to do it properly.
We'll have a live tracking page for downlink data at
<http://www.whitestarballoon.org/> http://www.whitestarballoon.org/
Technical Chat will be in #highaltitude and a TBA public chat via mibbit's
IRC server on the tracker page.
There will be live video of launch (bandwidth permitting) and audio of
mission control's headsets throughout the flight. All should be linked to
from the tracker page, <http://track.whitestarballoon.org>
http://track.whitestarballoon.org which will go live this weekend.
Thanks,
Dan Bowen
K2VOL
Project Lead
White Star Balloon Team
A project of LVL1 Hackerspace
Louisville, KY
Examinons l'état actuel du JET STREAM : sur le site METEOCIEL
http://www.meteociel.fr/modeles/gfse_cartes.php?ech=6&code=0&mode=5
Il est facile de sortir les prévisions pour les jours suivants: situation dans 48h pour une traversée de l' Atlantique.
ou sur le site METCHECK :
http://www.metcheck.com/V40/UK/FREE/jetstream.asp
Si vous avez des informations, vous avez à disposition les listes Yahoo:
http://fr.groups.yahoo.com/group/alerte-radiosondes
http://fr.groups.yahoo.com/group/ballons-radioamateurs
http://fr.groups.yahoo.com/group/radiosonde-monitoring ( je n'ai pas accès à cette liste, pour une raison que j'ignore, mais ma demande a été faite depuis des mois! )
A suivre, contact: f6agv AT free.fr
73 Alain F6AGV
