[Metalab] OHM2013 / Wetterballoons?

[Peter Kuhm]

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