RE new file, internal pressure = 0.01 psi (?)
I took a look at your spreadsheet.
Can you explain the 0.01 psid internal pressure? Seems high by more than an order of magnatude at launch, at least the way I analyze balloon pressures and stresses.
- Mark ng0x
- It's really a SWAG but I'm not sure it is that far off. A 10 meter altitude change is about 0.01PSI. In normal breathing the pressure in your lungs is changes +- 0.06psi.
And in reality I don't expect the delta pressure to be that high until you are close to the burst point of the balloon. Until I can find some better numbers on what the curve looks like as you approach burst I didn't want to guess on the shape of that curve.