MARS BIBLE — REPRODUCIBLE TOOLS

Mars Calculators

Nine educational calculators for testing orders of magnitude, changing assumptions and understanding dependencies in a Mars architecture.

Availability and spares calculator

Relate MTBF, MTTR, unit count, operating period, and reserve to simplified intrinsic availability and average spare demand.

Estimate the number of landings from campaign mass and landed payload per landing.

Calculate ideal delta-v from specific impulse and mass ratio.

Relate habitat volume, pressure, temperature, and composition to gas quantity and oxygen partial pressure.

Calculate an idealized heliocentric Hohmann transfer between two circular orbits.

Calculate free-space path loss and simplified received power from frequency, distance, power, and antenna gains.

Calculate oxygen mass from crew size, daily oxygen rate, duration, and margin.

Explore the effect of load, actual Mars-sol duration, losses, equivalent sun hours, and battery autonomy.

Calculate water make-up from population, chosen water flow, recovery rate, and duration.

These tools are not an official architecture. They expose editable relationships and assumptions so readers can reproduce the reasoning.