Reaction Control Thruster Calculator

Size reaction control system thrusters based on spacecraft inertia, slew requirements, and propellant budget.

Spacecraft Mass

Thruster Moment Arm

Required Slew Rate

°/s

Slew Angle

Thruster Specific Impulse

Tab to move between fields

Required Thruster Force

0.93 N

Total Propellant (1000 maneuvers)

25.89 kg

Propellant per Maneuver0.03 kg

Recommended Thrusters8

How to Use This Calculator

Enter spacecraft mass (kg) and the moment arm distance (m) from CG to thruster.
Set the required slew rate (deg/s) and total slew angle (degrees) for the maneuver.
Enter thruster specific impulse (Isp in sec).
Review required thruster force (N), propellant consumed per maneuver (g), and recommended thruster count.
Use total propellant mass for 1,000 maneuvers to verify RCS propellant budget adequacy.

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