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 Mars Lander

Semroc - Mars Lander {Kit} (KV-54)

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 C64.963:114:1285.7644.152.42.591.603.99176
Estes A84.683:19:1212.4522.926.00.810.901.5126
Apogee C44.703:110:1233.6352.122.72.401.603.80190
Estes C54.843:118:1416.5261.391.72.081.803.68198
Estes B44.774:111:1290.2940.182.21.101.502.4077
Weco C64.844:111:1284.6845.542.21.711.603.11120
Estes C64.914:112:1323.0964.712.01.911.903.61188
Estes B64.744:111:1274.7944.292.30.921.602.3273
Quest A64.644:110:1267.3422.802.50.441.001.2419
Quest A8 Q-Jet4.564:110:1259.5420.222.50.470.901.1714
FSI A64.675:110:1253.3220.192.30.510.701.0113
Aerotech C6W4.915:110:1248.8784.472.41.711.803.31194
Quest B64.675:113:1337.4351.352.00.791.702.2982
Apogee B74.426:113:1361.2255.061.80.831.602.2389
Aerotech D84.776:113:1354.04119.511.72.521.804.12356
Apogee C104.729:123:1622.0993.181.10.982.102.88176
Aerotech C12T4.879:118:1468.4191.951.51.032.102.93172
Aerotech D13W5.2610:120:1491.48135.621.21.772.003.57317
Aerotech D10W5.0111:122:1587.37141.131.21.462.203.46310
Apogee D105.0112:122:1590.88142.151.21.472.203.47309
Aerotech D21T4.9818:128:1768.25165.910.90.962.503.26293
Aerotech D24T5.1919:136:1574.94141.141.20.972.503.27274
Aerotech E25T4.8120:139:11131.61189.560.71.032.403.23322

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.