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 Lil' Hercules

Semroc - Lil' Hercules {Kit} (KV-14) [?-]

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 Micro Maxx0.344:115:1410.9048.572.90.871.902.5791
Quest Micro Maxx II0.345:139:11110.0840.160.70.761.602.1666
Apogee A20.5423:158:1965.36237.700.91.383.905.08656
Apogee 1/2A20.4623:148:1891.44174.391.00.683.503.98358
Estes A3T0.6026:170:1860.92219.171.01.103.904.80553
Estes A10T0.4928:1152:13726.43274.460.90.883.504.18534
Estes 1/4A3T0.5228:159:1753.9155.301.10.302.202.3083
Apogee 1/4A20.4330:165:11050.6770.390.90.272.402.47112
MPC 1/2A3-M0.5336:160:11133.77145.301.20.503.503.80304
Estes 1/2A3T0.5336:191:11037.14111.280.90.383.203.38219
Quest C61.1638:1186:11961.13299.901.52.635.407.831635
Estes A80.8738:1117:11394.21187.561.20.834.505.13538
Estes 1/2A60.7941:194:11225.01104.061.30.333.403.53226
Apogee C40.9046:1136:11522.00352.980.82.455.007.251597
Estes C51.0447:1245:13072.06376.950.92.085.006.881608
Estes B40.9750:1153:11407.22288.590.91.095.105.99890
Weco C61.0457:1149:11893.63319.921.01.774.906.471227
Estes C61.1157:1169:12114.42394.321.11.905.407.101555
Estes B60.9460:1146:11715.29319.551.10.905.205.90894
Quest A60.8461:1142:11774.59190.401.10.494.504.79484
Quest A8 Q-Jet0.7661:1134:11691.67218.111.20.404.204.40441
FSI A60.8765:1138:11618.71130.601.00.483.804.08328
Aerotech C6W1.1172:1141:11384.67470.571.01.685.707.181565
Quest B60.8774:1173:12408.44394.631.00.775.005.57921
Apogee B70.6281:1177:12796.24441.210.60.824.505.12866
Aerotech D80.9786:1184:12552.08688.230.62.445.007.242268
Apogee C100.92120:1309:12948.39542.550.51.035.406.231331
Aerotech C12T1.07129:1247:12466.93512.360.80.966.006.761425
Aerotech D13W1.46135:1267:12270.52671.330.51.726.508.022251
Aerotech D10W1.21150:1300:13179.41746.750.41.416.007.212062
Apogee D101.21161:1302:13318.17752.910.41.426.007.222073
Aerotech D21T1.18250:1386:14164.14877.580.41.036.006.831939
Aerotech D24T1.39261:1496:12352.09708.480.50.926.807.521936
Aerotech E25T1.01279:1535:16738.321052.860.41.015.206.011879

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.