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 Scrambler

Semroc - Scrambler {Kit} (KV-34)

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
Apogee A22.843:17:1172.0739.299.01.351.702.8582
Apogee 1/2A22.753:15:1137.8020.168.70.650.901.3520
Estes A3T2.903:18:1210.0237.795.71.071.602.4772
Estes A10T2.793:118:1509.6928.041.40.861.301.9645
MPC 1/2A3-M2.834:17:1177.6320.144.60.440.901.1416
Estes 1/2A3T2.834:111:1286.6120.913.40.441.001.2418
Quest C63.464:121:1527.0497.142.22.643.105.54446
Estes A83.174:113:1333.6336.551.90.831.502.1357
Estes 1/2A63.095:111:1270.1420.262.30.350.901.0514
Apogee C43.205:116:1378.01101.241.92.443.105.34476
Estes C53.345:128:1621.19127.401.42.053.505.35499
Estes B43.276:118:1449.4869.391.41.052.603.45170
Weco C63.347:117:1372.7990.431.81.773.004.57304
Estes C63.417:120:1443.21125.961.61.873.505.17442
Estes B63.247:117:1427.2376.531.70.882.703.38177
Quest A63.147:116:1384.1832.071.90.491.401.6940
Quest A8 Q-Jet3.067:115:1318.3429.412.10.421.301.5231
FSI A63.178:116:1362.3722.381.80.470.901.1719
Aerotech C6W3.418:116:1386.05150.891.81.663.504.96491
Quest B63.179:120:1440.3287.461.70.762.903.46197
Apogee B72.929:120:1571.3696.201.40.793.003.59232
Aerotech D83.2710:121:1554.51219.521.22.493.705.99869
Apogee C103.2214:136:1944.17161.510.81.063.704.56447
Aerotech C12T3.3715:129:1624.69158.561.31.013.804.61440
Aerotech D13W3.7616:131:1721.17247.090.91.754.105.65798
Aerotech D10W3.5117:135:1880.88258.980.91.444.205.44779
Apogee D103.5119:135:1885.85260.420.91.454.205.45781
Aerotech D21T3.4829:144:11150.28302.260.70.954.505.25758
Aerotech D24T3.6930:157:1847.24258.440.90.954.505.25696
Aerotech E25T3.3132:162:11729.48353.740.51.024.405.22827

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.