Mylar Balloon Shape

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Major Axis (m)

(Qualatex 0.914m, UBSEDS 1.5m/1.9m)

Mid-section Extension (m)

(0 for mylar balloon shape)

Film Thickness (μm)

(Qualatex 30μm, UBSEDS 50μm)

Film Density (g/cm3)

(Polyethylene 0.94 g/cm3, PET aka. Mylar 1.38 g/cm3, EVOH 1.17 g/cm3, Polyamide 1.15 g/cm3)

Envelope

Envelope Mass (kg)

Envelope Volume @ gamma=1 (m3)

Effective Cross-sectional Area (m2)

Masses

Payload Mass (g)

Free Lift (g)

Gas

Gas Type:

Required gas mass:

Gas volume at STP:

Envelope Fill at Launch:

Ascent

Upwards force:

Ascent Rate at Sea Level:

Float Altitude

Pressure Thermal Ratio

Ascent Rate Graph