How much Helium would you think appropriate?

Question

I designed a suit that is sort of like one of those glider outfits, you know with the wings and stuff. I'd rather not put all of the details, but the outfit is to be lined with Helium pouches to add gravity resistance. For a persons between 150 and 200, how much Helium do you think that you would need for max potential resistance?

Answer 1

Your terminology is bad.

"gravity resistance" and "potential resistance" are meaningless.

200 what? kg? lbs?

1000 cubic feet of helium in a balloon (not under pressure, but around one atmosphere) will lift 68.5 pounds at sea level. So 200 lbs will need about 3000 cubic ft of helium.

Which is a sphere of size:

V = ⁴/₃πr³

3000 = ⁴/₃πr³

r = 9', or a sphere 18' across.

not counting the weight of the balloon.

Of course if you pressurize the helium, it loses all lifting power.

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