7 tools
Δv & Propellant
Δv Budget
Itemized mission Δv — injection, drag, station keeping, deorbit — with margin.
Δv & Propellant
Propellant Mass
Tsiolkovsky rocket equation — propellant from Δv, Isp and dry/wet mass.
Thrusters
Chemical Thruster
Burn time, propellant, mass flow, total impulse and the finite-burn arc check.
Thrusters
Electric Propulsion
Thrust ↔ power with efficiency, propellant and thrusting days — feeds the EPS budget.
Tanks
Tank Sizing
Volume with ullage, spherical diameter per tank and a tank mass estimate.
System Budgets
Mass Budget
Payload → dry mass via SMAD fractions, margin, propellant, launch-capacity check.
Reference
Propellants & Δv
Propellant Isp/density, thruster classes, typical mission Δv, SMAD mass fractions.