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

Ed Moore eam52 at cam.ac.uk
Tue Jan 12 20:00:35 UTC 2010

Hi Guys. Just an interested outsider here. We use this spreadsheet to calculate weather balloon statistics:

http://ukhas.org.uk/guides:balloon_data    (burst1a.xls)

	- Ed

Ed Moore,  CU Spaceflight    eam52 at cam.ac.uk    +44 (0)7789 933271

On 12 Jan 2010, at 19:56, Mikolaj Habryn wrote:

> Also noteworthy is that I think they're using the same balloon for
> these launches as we have.
> m.
> 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:
>>> 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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>>>> https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
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