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 Mercury Atlas

Estes - Mercury Atlas {Kit} (2111) [1995-1998]

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
Weco C68.542:16:1143.3721.1330.71.721.002.5249
Estes C68.612:17:1165.4738.3310.61.921.603.32103
Estes B68.442:16:1138.0621.7910.80.950.901.6528
Aerotech E6RCT9.662:15:1121.5561.124.27.282.508.78618
Aerotech E7RCT9.512:15:1117.2559.794.45.802.006.80460
Aerotech C6W8.613:15:1127.7952.313.91.631.803.23132
Quest B68.373:17:1171.7727.386.90.761.201.7635
Apogee E69.433:19:1234.3776.162.76.172.507.67648
Aerotech D7T9.293:15:1109.6764.414.42.942.204.94294
Apogee B78.123:17:1180.6229.203.50.741.201.7441
Aerotech D88.473:17:1181.7082.072.82.512.304.61323
Aerotech E109.224:19:1218.38136.002.64.132.406.33669
Estes D119.384:112:1284.4482.872.31.952.604.35267
Apogee C108.425:112:1328.7257.872.11.042.102.94130
Aerotech D9W9.465:19:1207.5797.044.31.892.704.39284
Estes D129.305:114:1309.4182.762.21.752.604.15249
Aerotech C12T8.575:110:1250.7157.402.20.992.102.89123
Estes C119.045:110:1244.2950.372.50.872.002.6795
Aerotech E12RCJ9.895:18:1207.71128.242.53.082.805.68565
Aerotech D13W8.965:110:1266.65102.711.91.722.604.12307
Aerotech E11J10.005:19:1204.02127.912.72.912.805.51529
Aerotech D10W8.716:112:1313.58105.462.01.422.904.12302
Apogee D108.716:112:1315.42107.592.01.432.904.13307
Aerotech D15T9.356:113:1329.69106.141.61.502.704.00300
Aerotech F1210.157:111:1251.80158.002.02.943.005.74662
Aerotech E15W9.577:113:1343.99145.531.62.703.105.60626
Aerotech E18W9.818:114:1362.84170.461.52.203.205.20591
Aerotech E20W9.539:116:1413.69165.921.41.853.304.95514
Aerotech D21T8.6810:115:1413.39124.361.41.003.103.90307
Aerotech D24T8.8910:119:1312.93104.802.00.923.003.72252
CTI 24E22-13A9.7910:114:1360.15145.432.01.123.404.32373
Aerotech F2410.0010:119:1466.88188.521.52.223.305.32660
Aerotech E25T8.5111:121:1602.28146.851.10.963.304.06362
CTI 26E31-15A9.6313:120:1528.93159.791.50.893.604.29390
Aerotech E30T9.3315:122:1614.10207.071.01.263.604.66546
Aerotech E28T9.7215:123:1591.92200.681.11.263.704.76546
Estes E30T9.3115:123:1625.06182.011.11.063.604.46462
Aerotech F399.9217:127:1707.43229.210.91.353.804.95640
Aerotech F44W9.4920:130:1800.05253.311.21.013.804.61542
Aerotech E509.1524:125:1647.22254.171.10.883.904.58545
CTI 25E75-17A9.6334:144:11181.24158.470.70.333.603.73305

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.