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

[Mikolaj Habryn]

[+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:
> 1200 AGL, 10k MSL, 18k MSL and 42K MSL (Floor of Class E, Floor of Speed
> Restricted Airspace, Floor of Class A, and Top of Normal Traffic Flight
> Levels, respectively).

Looking at the data from the last EOSS launch
(http://www.eoss.org/ansrecap/ar_160/recap147_148.htm - specifically
the GPS log at http://www.eoss.org/eoss147-148/eoss-147_ae0ss-11_findu.txt)
it appears that they cleared 1200' AGL after 60-90 seconds, cleared
10k (but launched from ~5k) after 5m, 18k at 10m (from launch, not
after 10k), and 42k at about 28m. We won't be in the way for long :)

EOSS record their average ascent rate at a little over 1k fpm, but it
appears faster in the early stages of the ascent.

m.

> Ideally, I'd like to give the FSDO Mt. Diablo as our primary launch point
> and Angwin-Parret
> (http://skyvector.com/?ll=38.58004318495221,-122.43550168666164&chart=16&zoom=2)
> as an alternate.  I'll inform them that we'd prefer a Mt Diablo launch for
> convenience of recovery, but we're planning an alternate in case the FAA
> finds the airspace restrictions too tight.
> Rather than phrase this a 'We're looking for authorization', I'm going to
> take the 'Could you please file a 'NOTAM' (Notice to Airman) for Unmanned
> Balloon Activity in this vicinity on these dates, here is our estimated
> release time, here are the COP's of where the Balloon will cross the
> following altitudes, etc.
> Thanks!
> -Ozzy
>
> On Sun, Jan 10, 2010 at 12:38 PM, Mikolaj Habryn <dichro at rcpt.to> wrote:
>>
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>