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.

Estes Alpha

Estes - Alpha {Kit} (25) [1966-]

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 A21.048:122:1565.69136.141.21.323.704.82407
Apogee 1/2A20.969:118:1475.4675.741.50.722.703.22163
Estes A3T1.1010:126:1612.57119.591.21.033.504.33327
Estes A10T0.9911:157:1818.5696.201.10.913.103.81246
Estes 1/4A3T1.0211:122:1528.7723.181.40.331.101.2320
Apogee 1/4A20.9311:124:1656.4628.101.10.311.301.4127
MPC 1/2A3-M1.0313:122:1444.4462.911.60.442.402.64113
Estes 1/2A3T1.0314:134:1737.2454.411.10.412.202.4190
Quest C61.6614:169:11143.57220.661.72.564.907.261182
Estes A81.3814:144:1543.4897.981.40.763.403.96257
Estes 1/2A61.2915:135:1511.0146.651.50.372.002.1768
Apogee C41.4017:151:1934.47227.871.02.374.806.971173
Estes C51.5518:192:11899.46278.951.12.004.906.701196
Estes B41.4719:157:1811.31171.851.01.104.405.30552
Weco C61.5421:156:11210.12227.261.21.804.606.20888
Estes C61.6221:163:1882.89285.441.21.925.106.821128
Estes B61.4423:155:1762.21188.471.20.924.505.22569
Quest A61.3423:153:1841.9499.261.40.423.403.62227
Quest A8 Q-Jet1.2623:150:11014.54107.081.50.443.403.64239
FSI A61.3724:152:1996.1488.071.20.503.003.30185
Aerotech C6W1.6127:153:1893.71329.691.21.705.206.701148
Quest B61.3728:165:11083.88231.931.20.804.705.30633
Apogee B71.1230:166:11379.84257.370.90.754.505.05653
Aerotech D81.4732:169:11444.91483.700.72.454.907.151772
Apogee C101.4245:1116:12349.94362.660.61.045.206.041021
Aerotech C12T1.5748:193:11548.62353.420.90.975.506.271049
Aerotech D13W1.9651:1100:11558.16494.790.61.725.807.321688
Aerotech D10W1.7156:1112:12080.47536.980.51.425.606.821597
Apogee D101.7160:1113:12092.29545.010.51.425.606.821610
Aerotech D21T1.6894:1144:12732.55627.860.51.035.706.531526
Aerotech D24T1.8998:1186:11588.98519.400.60.936.206.931464
Aerotech E25T1.51105:1200:14173.86746.880.41.015.306.111560

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.