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 Blue Jay

Semroc - Blue Jay {Kit} (KC-03)

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 A21.645:112:1332.1088.563.01.413.504.71298
Apogee 1/2A21.565:110:1273.4843.523.30.721.902.4278
Estes A3T1.706:115:1393.5479.031.61.073.304.17238
Estes A10T1.586:132:1688.6149.351.20.932.202.93113
Estes 1/4A3T1.626:113:1328.7120.151.90.281.001.0813
Apogee 1/4A21.536:114:1384.4620.191.90.261.001.0613
MPC 1/2A3-M1.638:113:1340.0136.682.00.491.701.9952
Estes 1/2A3T1.638:120:1531.6033.761.30.431.601.8344
Quest C62.268:140:1757.13217.971.92.596.608.991395
Estes A81.988:125:1467.3059.641.60.782.603.18142
Estes 1/2A61.899:120:1417.7723.551.70.401.101.3021
Apogee C42.0010:129:1632.60234.911.32.396.808.991498
Estes C52.1410:152:11276.88282.041.22.027.108.921594
Estes B42.0711:133:1693.26122.561.21.124.605.52478
Weco C62.1412:132:1574.50195.311.41.736.107.63988
Estes C62.2212:136:1594.37256.741.41.947.008.741386
Estes B62.0413:131:1548.53133.331.40.944.905.64519
Quest A61.9413:130:1478.7858.971.60.452.602.85120
Quest A8 Q-Jet1.8613:129:1706.5671.421.70.473.003.27167
FSI A61.9714:129:1593.6260.821.40.532.502.83119
Aerotech C6W2.2115:130:1631.70286.151.41.627.408.821541
Quest B61.9716:137:1548.32159.181.40.825.506.12631
Apogee B71.7217:138:1817.99182.271.20.775.806.37744
Aerotech D82.0718:139:1966.52451.240.92.468.0010.262723
Apogee C102.0226:166:11577.95302.150.61.047.408.241438
Aerotech C12T2.1728:153:11056.67291.991.00.987.508.281406
Aerotech D13W2.5629:157:11128.38474.040.71.738.8010.332576
Aerotech D10W2.3132:164:11437.52517.440.61.438.709.932531
Apogee D102.3134:165:11445.31525.460.61.438.709.932550
Aerotech D21T2.2854:183:11880.17590.470.51.048.909.742516
Aerotech D24T2.4956:1106:11275.91478.440.70.949.009.742242
Aerotech E25T2.1160:1115:12834.12729.210.51.028.809.622739

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.