[Space] [Noisebridge-discuss] Reminder: Spacebridge, 5pm tonight (pants optional) EOM

Adam Fritzler mid at zigamorph.net
Tue Jan 12 12:15:50 PST 2010


On Tue, Jan 12, 2010 at 11:56 AM, Mikolaj Habryn <dichro at rcpt.to> wrote:
> [+space, for more eyeballs]
>
> On Mon, Jan 11, 2010 at 4:07 PM, Ozzy Satori <ozzymandi at gmail.com> wrote:
>> Hey Mikolaj,
>> It's Ozzy-
>> Do you have a basic function for how quickly we can anticipate this thing to
>> climb out?  It'd help a great deal in my contacts to the FSDO if I could
>> have reasonable time estimations for when the balloon will cross through:

The predictions from this site tend to be very accurate.  All the
projects mention it.  You enter the latlong of the launch location,
the burst altitude, and the launch time (offset from the weather model
data time) and it gives you a complete prediction with times and
velocities.    http://weather.uwyo.edu/polar/balloon_traj.html

You'll see the ascent pattern from looking at the KML output in google
earth that the balloon will spend most of its time in Class A airspace
-- ascending rapidly into it (within 20 minutes), slowing down, and
then around 80,000 feet ascending very rapidly to burst pressure.


asf.


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