Re: Stronger balloons?
- Hi Mike,
Well, hydrogen will burn in the upper atmosphere, provided with a
near-adiabatic supply of oxygen. After all, that's what the NASA
Shuttle main engines run on.
However, if you were to use the hydrogen for propulsion, then you'd
have a rocket. And if you think FAR 101 is tough for balloons, check
the same regs for rockets!
ANd you're right about hydrogen being a bit dangerous. It does yield
maybe 10% more lift than helium and it costs a lot less. But all the
ignition-avoidance and fire protection you'd be compelled to deal
with isn't likely worth those benefits.
73 de Mike W5VSI
> Okay, thanks for the explanation guys. I was just trying to think of a
> way to achieve even higher altitude.
> My other idea was a balloon filled with hydrogen where the hydrogen is
> ignited and used for propulsion once the balloon reached near max
> altitude. But then, hydrogen is dangerous, and it probably won't burn
> in the upper atmosphere.
Mike Manes manes@... Tel: 303-979-4899
"Things should be made as simple as possible, but not more so." A.