"Just how thin does the atmosphere have to be?"
At least as thin so that buoyancy effects and aeorodynamics effect become completely negligible against forces of inertia, gravity and elecctromagentism for all analysis of movement of given aircraft.
Now legals: http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line The Kármán line lies at an altitude of 100 kilometres (62 mi) above the Earth's sea level, and is commonly used to define the boundary between the Earth's atmosphere and outer space.[2] This definition is accepted by the Fédération Aéronautique Internationale (FAI).
Yes I know your right Chris, but the story with his sons was lovely I thought. Its still a cool thing to do! The iphone had very little to do with it as well!
Once again giving false title is the best to get attention.
This is not space, as without atmosphere, the balloon would not lift, and when there is atmosphere, it is not space at all.
Yet another balloon stratospheric ballon project (ca 100/year) this time with excellent media coverage.
I was thinking.Is it possible to use an air compressor to store the helium during flight?Something like reusing the helium in his gas or liquid form to control altitude?You want to go higher inflate the ballon, you want to go lower use the compressor to pump the helium in a recepient.
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At least as thin so that buoyancy effects and aeorodynamics effect become completely negligible against forces of inertia, gravity and elecctromagentism for all analysis of movement of given aircraft.
Now legals:
http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line
The Kármán line lies at an altitude of 100 kilometres (62 mi) above the Earth's sea level, and is commonly used to define the boundary between the Earth's atmosphere and outer space.[2] This definition is accepted by the Fédération Aéronautique Internationale (FAI).
This is not space, as without atmosphere, the balloon would not lift, and when there is atmosphere, it is not space at all.
Yet another balloon stratospheric ballon project (ca 100/year) this time with excellent media coverage.
It is legal, part 101 FAA regs.
I wish I had an HD camera in 1998! This video kicks butt.
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