Rocket Motor Guide

Enter the name of the rocket. You can optionally select a rocket from the list that may appear as you type.
Enter the diameter of the rocket's body.
Enter the weight of the rocket without the motor.
Enter the diameter of the rocket's motor mount. This sets the largest diameter motor which will fit.
Enter the length of the rocket's motor mount. This sets the longest motor which will fit.
Select the approximate drag of the rocket. Sleeker rockets with a smooth finish will have lower drag.

Semroc Laser-X

Semroc - Laser-X {Kit} (KV-33)

MotorWeight
oz
TTW
Average
TTW
Peak
Accel
f/s2
Speed
mph
Rod
Len
feet
Burnout Time
sec
Optimal
Delay
sec
Time to
Apogee
sec
Altitude
feet
Quest C65.862:111:1261.7553.712.52.612.304.71220
Apogee C45.603:18:1200.7464.983.12.432.704.93289
Estes C55.743:115:1374.3180.011.81.993.305.09322
Estes B45.673:19:1238.3138.784.11.081.802.6881
Weco C65.743:19:1235.6550.642.81.752.303.85155
Estes C65.813:110:1267.7178.482.71.953.204.95294
Estes B65.644:19:1225.7941.863.20.871.902.5780
Quest A65.544:19:1220.2520.153.60.500.901.2016
Quest A8 Q-Jet5.464:18:1213.6120.153.60.431.001.2315
FSI A65.574:18:1210.4220.172.80.550.801.1514
Aerotech C6W5.814:18:1208.9695.572.71.633.705.13372
Quest B65.574:110:1279.1147.682.50.832.102.7398
Apogee B75.325:111:1294.9150.902.10.752.202.75110
Aerotech D85.675:111:1297.57171.151.92.445.407.64988
Apogee C105.627:119:1514.34100.801.30.994.004.79355
Aerotech C12T5.778:115:1392.4598.301.60.943.904.64335
Aerotech D13W6.168:116:1410.53187.401.31.785.607.18922
Aerotech D10W5.919:118:1487.59195.811.41.485.907.18925
Apogee D105.9110:118:1490.32196.101.41.485.807.08924
Aerotech D21T5.8815:123:1638.61219.321.00.976.307.07951
Aerotech D24T6.0916:130:1481.09185.711.30.985.906.68790
Aerotech E25T5.7117:132:1936.32266.660.81.046.607.441158

Weight - The total weight of the rocket, with motor, at lift-off.

TTW Average - The average thrust-to-weight ratio of the rocket.

TTW Peak - The peak thrust-to-weight ratio of the rocket.

Accel - The maximum acceleration experienced by the rocket.

Speed - The maximum speed experienced by the rocket.

Rod Len - The minimal rod/rail length for the rocket to reach a safe speed (9 m/s) for free flight.

Optimal Delay - The optimal delay time (equal to the time from burnout to apogee).

Altitude - The altitude at apogee.

Note: These simulation results should be used with caution. Always double-check to ensure that your flight will be safe.

The Rocket Motor Guide helps you choose the right motor to use in your rocket by running a simulation using each of the motors in the RocketReviews.com motor database.