[757labs] HackerSpaces in Space 2011

[matthew green]

Have we come up with a date to meet

When: How about Friday 1ish - 5pm
Where: The Lab
Why: Because we need to get orginized
How: who ... w/e

On Wed, Oct 19, 2011 at 8:59 PM, Steve Nelson <snelson at webapper.com> wrote:
> I think the time it takes is just a matter of how much energy you apply to
> it. Logically applying 1KW should produce 10 times as much gas as 100W.
> According to these guys 1KW will produce 35 cubic feet in about 6 hours. So
> to fill a 100 cubic foot balloon will take about 18 hours. At 6 cents/ KWH
> that's a grand total of a $1.08.
> http://www.dangerouslaboratories.org/h2homesystem.pdf
> But... it's dangerous.
> Steve
> On Wed, Oct 19, 2011 at 6:16 PM, Almost_There at COX.Net <Almost_There at cox.net>
> wrote:
>>
>>
>> Steve;
>>
>> >all it takes to make it is stick an anode and cathode in a bowl of water.
>>
>>     (Recalling from research I did years ago): What you're talking about
>> is building an Electrolyser, not all that dissimilar from a home-made
>> battery or fuel cell; it works, but VERY slowly, it would take weeks (if not
>> months) to generate enough gas.
>>
>> At 09:29 AM 10/19/2011, you wrote:
>>
>> The scoring seems to really be weighted toward the documentation side.
>> Probably because they're trying to make a kit that kids could build from. We
>> should figure out what it will take to score 100 points on the
>> documentation. That is something we can very easily control.
>>
>> How much cheaper is hydrogen to buy than helium? You know... we could make
>> our own hydrogen. I don't know how you compress it and make it safe, but all
>> it takes to make it is stick an anode and cathode in a bowl of water.
>> Hydrogen and oxygen will bubble off.
>>
>> I have no idea how much electricity it would take... but electricity is
>> crazy cheap.
>>
>> Steve
>>
>> On Wed, Oct 19, 2011 at 1:11 AM, <telmnstr at 757.org> wrote:
>> * Magnetometer - tell the direction
>> * GPS/altimeter -tell altitude
>> *Wiki page - to state what we did (needs to be replicated in kits if we
>> win)
>> * cam
>> * test
>> * under 4 lb and under 300 umm
>> miss anything
>>
>>
>> Remember, every dollar above $150 counts against you, and $250 is the
>> maximum.
>>
>> Last year, I think the helium and balloon alone ran $100+. And only
>> counted the helium we used, the actual cost was over $100 for the gas alone.
>>
>> We looked at offloading some of it into an aluminum 80cuft scuba tank I
>> had. I randomly had an adaptor for filling a specific scuba tank with pure
>> o2 from a large tank which looked like it would do the trick, but wisely the
>> "K valve" fitting was sized differently. Most likely it's a cautionary thing
>> where it's sized different for each gas so they can't be mixed up. So we
>> weren't able to safely save any of the excess purchased helium. This time
>> around I think balloon gas would be advisable.
>>
>> I'm really for dropping off at the needed height, and playing the game to
>> win.
>>
>> Remember, it's a challenge to meet the goals of the contest. Those are the
>> goals.
>>
>> HacDC followed up their contest entry with launches that carried the cool
>> experamentative payloads with things like high definition video cameras.
>>
>> Another idea might be more of a schedule for the pictures to conserve
>> battery power.
>>
>> Battery was a large cost as well. Last one took 4x lithium batteries.
>>
>>
>>
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>> If we knew what we were doing it wouldn't be research.
>>
>>
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>> If we knew what we were doing it wouldn't be research.
>>
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>> If we knew what we were doing it wouldn't be research.
>
>
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> If we knew what we were doing it wouldn't be research.
>



-- 
MATTHEW GREEN
Msg4real at gmail.com


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