[Discuss] Near-space balloon: Will need to source balloon

[Kevin King]

We should have two on hand in case one breaks during launch, as advised by 
Rick.  Also, we should start tracking the weight for all objects so we have a 
good idea of our required lift weight.  This will help determine the balloon 
size requirement.  If we want to get to +120k, a 1200 gram balloon is 
recommended.





________________________________
From: Laura Harris <EMAIL HIDDEN>
To: Ben Hallert - Vipmail <EMAIL HIDDEN>
Cc: "EMAIL HIDDEN" 
<EMAIL HIDDEN>
Sent: Tue, November 1, 2011 4:52:53 PM
Subject: Re: [Discuss] Near-space balloon: Will need to source balloon


We may want to go a little bigger so we have a little wiggle room.  112 ft^3 
generates right at 7 lb L at standard temp and pressure. 




________________________________
From: Ben Hallert - Vipmail <EMAIL HIDDEN>
To: Laura Harris <EMAIL HIDDEN>
Cc: "EMAIL HIDDEN" 
<EMAIL HIDDEN>
Sent: Tuesday, November 1, 2011 4:20  PM
Subject: Re: [Discuss] Near-space balloon: Will need to source balloon


Ballionsdirect.com (just googled weather balloons) has 5.5 ft diameter balloons 
with 5.5lb capacity for $34.  This seems quite doable.  How much roughly should 
the 80-90 ft^3 of He cost?

- Ben

On Nov 1, 2011, at 4:10 PM, Laura Harris <EMAIL HIDDEN> wrote:


I spoke to Vance today and he couldn't find the two balloons he thought he could 
donate, so we'll need to source a balloon. I did a quick look online and there 
are plenty of sources but if anyone has a known-good source, please let us  
know. 
>
>
>Laura
>
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