Spacecraft Mass Budget Calculator
Estimate spacecraft dry mass, propellant mass, and payload fraction from subsystem mass percentages.
Inputs
kg
%
%
%
%
%
%
Results
Dry Mass
1,250 kg
Total Launch Mass
2,466.88 kg
Propellant Mass1,216.88 kg
Payload Fraction20.27%
Structural Fraction20%
How to Use This Calculator
- Enter payload mass (kg) — the science instruments or communication payload being carried.
- Set subsystem mass percentages for structure, power, propulsion, thermal, and communications.
- Review dry mass, required propellant mass based on mission delta-V, and total launch mass.
- Check payload fraction and structural fraction against your launch vehicle's performance envelope.
- Iterate subsystem percentages to reduce total mass if launch vehicle capacity is exceeded.
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