[Metalab] OHM2013 / Wetterballoons?

[gaelic]

There are several launches of weatherballoons in Austria every day
(usually twice a day per station). As far as I know every airport is
doing this ...

PS: don't know about permits to start a balloon, maybe one has to
contact Austro Control ...

On Tue, Jan 29, 2013 at 4:54 PM, Peter Kuhm <peter at null.priv.at> wrote:
> On Tue, 29 Jan 2013 10:07:52 -0500 Marius Kintel wrote:
>
>> On 2013-01-29, at 08:51 , Thomas Steinbrenner wrote:
>>
>> > Nur aus Interesse: Was spricht gegen Wasserstoff?
>> > Helium wird angeblich immer knapper.
>>
>> I talked to a weather ballon guy at HAR and he recommended Hydrogen for two reasons: price and better lift.
>> He didn't seem concerned about flammability, even though I asked concrete questions about how to best ignite it from a distance :/
>> (although adding oxygen should fix that shortcoming)
>
> the ZAMG sends out balloons twice a day (or 4 times?)
> http://log.metalab.at/post/292167108/Weather-balloon-launch-at-ZAMG
>
> they are filled with H because of the lower price
> one time there was an accident but I heard only the doors were harmed
>
>
>> Regarding helium: I called around and got it from a family-run balloon business. I believe the 50L bottle was ~200 EUR.
>
> cheers,
> Peter
>
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