Rocket Motor Designer & Test Stand Analyzer

Rocket Motor Designer

OpenMotor-style solid motor design plus static-fire analysis. Results are simplified estimates for education and early trade studies.

Theory basis: burning area, BATES grains, Saint Robert burn rate, chamber pressure, thrust coefficient, and port-to-throat checks from Richard Nakka's solid motor theory notes.

Pressure overlay

Motor Preset

Burn Model

Port Shape

Propellant

Outer Dia mm

Port Dia mm

Grain Len mm

Grains

Throat mm

Expansion

Ambient

Inhibited Faces

Solver

Target MEOP psi

Erosion mm

Density Ratio

Outer Surface

Core Surface

Ends Surface

Nozzle Eff %

Density kg/m3

Burn a mm/s

Burn n

c* m/s

BATES grain estimates burning on port and grain ends. It is simplified, but useful for early Kn and pressure intuition.

Burn Progress

Web0 mm

L/D0

Load0%

Initial Kn0

Throat0 mm2

Propellant0 kg

Gamma k-

Flame Temp-

MEOP Margin-

Final Throat-

Casing Safety

Material

Case OD mm

Wall mm

Design SF

Design P-

Burst P-

Burst SF-

Expansion-

Igniter Pressure

Charge

Charge Vol in3

Free Vol in3

Density lb/in3

Charge Mass-

Igniter P-

Thrust / Pressure CurveSynthetic Data

Design Review

Design Summary

Run a simulation to review motor class, pressure, Kn, and geometry health.

Ready

LowGoodWatchHigh

Ready

Load a profile or paste measured CSV data, then run analysis.

Peak0 N

Burn0 s

Rise0 s

Tailoff0 s

Roughness0%

Pressure0 bar

0 NsTotal Impulse

0 NAverage Thrust

0 sEstimated Isp

-Motor Class