Asteria Parachute Calculator

Inputs

Parachute shape

Flight mass (g) Target speed (m/s) Spill hole (% width) Apogee (m)

More parachute settings

Cd override Opening speed (m/s) Fabric (g/m²) Seam allowance (mm) Line length (× width)

Air

Density (kg/m³) Temperature (°C) Pressure (hPa)

Fill in both temperature and pressure to compute the density from them instead.

Components (mass budget)

Masses are estimates until weighed – untick “est.” once you have weighed a part.

Part	g	Qty	est.

Include sweep plots (slower)

Starting Python (first load takes ~10–20 s)…

Shape	Cd0	Area m²	Width cm	Hole cm	Mass g	Dimensions

Full-size SVG for laser cutting, or A4 tiles with 10 mm overlap. Print at 100 % (“actual size”) and check the 100 mm scale bar before cutting.

The swing model's damping is a placeholder until calibrated from filmed drop tests.

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