[aprssig] TransAtlantic Balloon on 28 MHz (signal)

Bob Bruninga bruninga at usna.edu
Thu Feb 23 16:34:11 CST 2012

>> ...Air-to-Helium  (10-to-1) and
>> air-to-H2 (10-to.5) so the difference in lifting capacity is
>> only 0.5 out of 10 or about 5%.  Now it makes sense.

> This hurts my brain.  It sure looks like 10:1 vs 20:1...  
> Time to revisit buoyancy class.

Yep, that's why I posted it.  All my life I never understood it till now...
It’s the displaced air side of the equation that matters. Nine units vs 9.5
units is only about 5% Better.  

Bob, Wb4APR

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