Rocket Motor Selection Calculator

Determine the right NAR motor class for your rocket based on mass, target altitude, and drag estimates using energy-based delta-V and impulse calculations.

Inputs

Rocket mass (kg)

Target altitude (m)

Drag loss estimate (%)

Safety margin (%)

Tab to move between fields

Results

Required total impulse (N-s)

65.75

Minimum delta-V (m/s)76.71

Estimated avg. thrust (N)32.87

Thrust-to-weight ratio6.7

Minimum safe thrust (N)24.52

Motor ClassG

How to Use This Calculator

Enter Rocket mass (kg), Target altitude (m), and Drag loss estimate (%).
Set Safety margin (%).
Review the Required total impulse (N-s) result.
Use Minimum delta-V (m/s) and Estimated avg. thrust (N) to inform your decision.

Ad Placeholder