High-Power Certification Calculator

Plan your NAR/TRA Level 1, 2, or 3 certification flight. Predicts altitude, velocity, and Mach number from motor and rocket specifications.

Rocket dry mass (kg)

Motor total impulse (N-s)

Motor average thrust (N)

Motor loaded mass (kg)

Body diameter (mm)

Drag coefficient (Cd)

Tab to move between fields

Predicted apogee (ft)

742

Predicted apogee (m)226

Burnout velocity (m/s)57.3

Max Mach number0.17

Thrust-to-weight ratio3.71

Burn time (s)2.08

Altitude at burnout (m)60

Coast altitude gain (m)166

Cert LevelLevel 1

Motor LetterH

How to Use This Calculator

Enter Rocket dry mass (kg), Motor total impulse (N-s), and Motor average thrust (N).
Set Motor loaded mass (kg), Body diameter (mm), and Drag coefficient (Cd).
Review the Predicted apogee (ft) result.
Use Predicted apogee (m) and Burnout velocity (m/s) to inform your decision.

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