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.

Aerospace Specialty Products Kappa 9M (24mm)

Aerospace Specialty Products - Kappa 9M (24mm) {Kit} (KK9M-24)

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
Estes A10T4.182:111:1328.3720.569.50.871.001.6730
MPC B3-M4.362:14:1107.1441.2111.21.931.603.33103
MPC A3-M4.263:14:1107.1420.1311.20.930.901.6323
Quest C64.863:114:1292.8872.632.42.582.905.28326
Estes A84.583:19:1219.8025.064.70.761.201.7633
Apogee C44.603:110:1243.5479.622.62.393.105.29371
Estes C54.744:118:1427.7198.511.62.073.505.37402
Estes B44.674:111:1298.7249.382.11.092.102.99115
Weco C64.744:111:1296.3762.332.21.812.504.11199
Estes C64.814:113:1334.6797.761.91.913.505.21369
Estes B64.645:111:1283.4450.782.20.922.202.92110
Quest A64.545:111:1276.8623.802.40.431.101.3322
Quest A8 Q-Jet4.465:110:1270.7720.162.40.470.901.1717
Aerotech E6RCT5.865:111:1234.54154.122.57.164.5010.661696
Aerotech E7RCT5.715:110:1227.57149.222.55.674.509.171316
FSI A64.575:110:1263.9820.202.20.510.801.1114
Aerotech C6W4.815:111:1260.21113.902.31.703.605.10423
Quest B64.576:113:1350.0359.211.90.792.503.09130
Apogee E65.636:118:1435.99189.561.66.105.0010.101709
Aerotech D7T5.496:110:1214.54148.592.42.904.607.30840
Apogee B74.326:113:1372.0063.641.70.832.503.13150
Aerotech D84.676:114:1368.90177.551.62.524.506.82902
Aerotech E105.427:118:1420.67280.891.74.164.808.761689
QUEST D820.018:126:1141.4628.548.52.291.303.3987
Estes D115.588:123:1603.37185.461.81.895.006.69806
Apogee C104.629:123:1636.94120.451.10.984.004.78397
Aerotech D9W5.669:118:1374.06192.103.21.955.006.75794
Estes D125.509:127:1658.75185.511.81.695.006.49775
Aerotech C12T4.7710:119:1483.66117.381.41.033.904.73378
Estes C115.2510:120:1469.90110.331.90.903.804.50327
Aerotech E12RCJ6.1010:116:1389.11264.481.53.115.308.211443
Aerotech D13W5.1610:120:1502.24206.631.11.764.806.36841
Aerotech E11J6.2010:117:1374.12260.461.72.845.408.041366
Aerotech D10W4.9111:122:1601.12217.631.21.465.006.26839
Apogee D104.9112:123:1604.48217.741.21.475.006.27837
Aerotech D15T5.5513:126:1572.97204.171.01.465.106.36815
Aerotech F126.3513:121:1465.85326.231.32.995.608.391672
Aerotech E15W5.7714:126:1626.74301.501.02.665.708.161580
Aerotech E18W6.0116:128:1647.06337.311.02.275.807.871506
Aerotech E20W5.7318:131:1732.80326.041.01.815.807.411330
Aerotech D21T4.8819:129:1785.94248.670.90.965.406.16836
Aerotech D24T5.0920:137:1588.68211.191.10.975.205.97731
CTI 24E22-13A5.9920:128:1642.70273.351.11.165.806.76999
Aerotech F246.2020:137:1811.56372.101.12.196.108.091684
Aerotech E25T4.7121:140:11159.66297.580.71.035.506.33961
CTI 26E31-15A5.8326:139:1935.88307.120.90.956.006.751040
Aerotech E30T5.5329:143:11108.36407.970.71.246.107.141403
Aerotech E28T5.9229:145:11028.39389.480.71.246.307.341410
Estes E30T5.5130:144:11136.49356.970.71.036.106.931210
Aerotech F396.1234:154:11211.33450.010.71.336.507.631636
Aerotech F44W5.6938:159:11432.75492.111.01.096.307.191429
Aerotech E505.3547:149:11206.25494.580.80.856.407.051381
CTI 25E75-17A5.8367:186:12056.05267.590.50.425.906.12836

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.