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.

DFR Technologies Delta IV Heavy - 18mm

DFR Technologies - Delta IV Heavy - 18mm {Kit} (DIV-HVY-18) [2011-2012]

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 C57.742:110:1288.2749.782.12.032.204.03165
Estes B47.672:17:1165.7622.8414.41.051.101.9536
Weco C67.742:16:1162.8828.6913.91.711.302.8171
Estes C67.812:17:1187.0949.537.11.962.103.86149
Estes B67.643:16:1156.5226.987.70.891.301.9940
Aerotech C6W7.813:16:1145.5865.103.51.702.504.00209
Quest B67.573:17:1194.3931.935.40.771.502.0748
Apogee B77.323:18:1204.3534.183.00.811.502.1157
Aerotech D87.674:18:1207.07120.102.62.494.206.49631
Apogee C107.625:113:1367.5670.011.91.032.903.73205
Aerotech C12T7.776:111:1280.9769.492.00.982.903.68193
Aerotech D13W8.166:111:1297.26136.361.81.714.606.11605
Aerotech D10W7.916:113:1350.21141.371.91.414.806.01605
Apogee D107.917:113:1352.21143.121.91.414.906.11611
Aerotech D21T7.8811:117:1460.73159.631.30.995.205.99632
Aerotech D24T8.0911:121:1348.71129.461.70.914.705.41472
Aerotech E25T7.7112:123:1671.83194.741.00.955.806.55803

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.