Re: Burst altitude
Joe WB9SBD
Hi Steve,
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Thanks for making the confirmation on my calculations. I was amazed that that little balloon granted with no work to do could reach as high as it was calculating to be. I was close, I was about 2K higher. BUT we and I do not know why, but our Lift provided by H2 per volume is slightly different. And thus the difference in burst altitude. I have been using oz per cuft. with yours numbers that comes out to 1.184153533..... oz per cuft. For decades I have been using a number that I came up with in the 1980's as 1.216 oz per cuft. I honestly do not know where that number came from. It's been 30+ years! Thanks for confirming my calculations. Joe WB9SBD
On 9/6/2020 4:40 AM, Steve G8KHW /
AJ4XE wrote:

