Payload Mass Budget
Mass rollup and launch fit
The existing rollup shows how subsystem contingency, propellant, and system margin consume launch capacity.
The rollup shows how subsystem dry mass grows through contingency, propellant, system margin, and the final launch capacity gate.
9.6 kg remaining
Launch mass envelope
250.4 / 260.0 kg used
Subsystem category load
dry mass plus item contingency
Total wet mass
250.4 kg
Dry mass 165.0 kg
Launch margin
9.6 kg
3.7% capacity margin
Contingency
30.8 kg
19.6 kg system margin
Budget lines
5 items
5 active categories
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.