Rocket Motor Guide
Semroc Little Joe II
Semroc - Little Joe II {Kit} (KS-3)
| Motor | Weight 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 A2 | 1.74 | 5:1 | 12:1 | 309.22 | 64.16 | 3.4 | 1.33 | 2.00 | 3.13 | 140 |
| Apogee 1/2A2 | 1.65 | 5:1 | 10:1 | 253.87 | 39.47 | 3.7 | 0.65 | 1.50 | 1.95 | 52 |
| Estes A3T | 1.80 | 5:1 | 14:1 | 366.57 | 59.20 | 1.7 | 1.08 | 1.90 | 2.78 | 117 |
| Estes A10T | 1.69 | 6:1 | 30:1 | 665.13 | 40.19 | 1.2 | 0.93 | 1.50 | 2.23 | 68 |
| Estes 1/4A3T | 1.71 | 6:1 | 12:1 | 305.79 | 20.19 | 2.2 | 0.29 | 0.90 | 0.99 | 13 |
| Apogee 1/4A2 | 1.63 | 6:1 | 13:1 | 357.08 | 20.16 | 2.2 | 0.27 | 0.90 | 0.97 | 13 |
| MPC 1/2A3-M | 1.73 | 7:1 | 12:1 | 313.46 | 32.87 | 2.0 | 0.49 | 1.30 | 1.59 | 37 |
| Estes 1/2A3T | 1.73 | 7:1 | 18:1 | 494.24 | 30.68 | 1.4 | 0.44 | 1.30 | 1.54 | 33 |
| Quest C6 | 2.36 | 8:1 | 37:1 | 727.53 | 98.14 | 1.9 | 2.60 | 2.40 | 4.80 | 430 |
| Estes A8 | 2.07 | 8:1 | 23:1 | 453.35 | 50.56 | 1.6 | 0.79 | 1.80 | 2.39 | 85 |
| Estes 1/2A6 | 1.99 | 8:1 | 19:1 | 400.34 | 21.41 | 1.8 | 0.40 | 1.00 | 1.20 | 17 |
| Apogee C4 | 2.10 | 9:1 | 27:1 | 563.44 | 124.47 | 1.4 | 2.40 | 2.40 | 4.60 | 437 |
| Estes C5 | 2.24 | 9:1 | 49:1 | 1185.76 | 122.36 | 1.2 | 2.02 | 2.50 | 4.32 | 439 |
| Estes B4 | 2.17 | 10:1 | 31:1 | 660.80 | 91.03 | 1.2 | 1.12 | 2.30 | 3.22 | 191 |
| Weco C6 | 2.24 | 11:1 | 30:1 | 505.07 | 102.27 | 1.5 | 1.73 | 2.40 | 3.93 | 312 |
| Estes C6 | 2.31 | 11:1 | 34:1 | 571.28 | 128.06 | 1.4 | 1.94 | 2.60 | 4.34 | 398 |
| Estes B6 | 2.14 | 12:1 | 29:1 | 528.57 | 102.96 | 1.4 | 0.94 | 2.40 | 3.14 | 195 |
| Quest A6 | 2.04 | 12:1 | 28:1 | 464.46 | 53.15 | 1.6 | 0.45 | 1.80 | 2.05 | 72 |
| Quest A8 Q-Jet | 1.96 | 12:1 | 27:1 | 631.15 | 63.23 | 1.7 | 0.47 | 1.90 | 2.17 | 84 |
| FSI A6 | 2.07 | 13:1 | 28:1 | 530.05 | 56.60 | 1.5 | 0.53 | 1.70 | 2.03 | 71 |
| Aerotech C6W | 2.31 | 14:1 | 28:1 | 579.88 | 173.67 | 1.4 | 1.63 | 2.50 | 3.93 | 405 |
| Quest B6 | 2.07 | 15:1 | 35:1 | 535.30 | 122.42 | 1.4 | 0.82 | 2.50 | 3.12 | 209 |
| Apogee B7 | 1.82 | 16:1 | 35:1 | 756.19 | 131.99 | 1.2 | 0.77 | 2.40 | 2.97 | 220 |
| Aerotech D8 | 2.17 | 17:1 | 37:1 | 882.25 | 232.43 | 0.9 | 2.46 | 2.40 | 4.66 | 672 |
| Apogee C10 | 2.12 | 24:1 | 62:1 | 1494.45 | 192.03 | 0.6 | 1.04 | 2.60 | 3.44 | 354 |
| Aerotech C12T | 2.27 | 26:1 | 49:1 | 996.65 | 189.01 | 1.1 | 0.99 | 2.80 | 3.59 | 356 |
| Aerotech D13W | 2.66 | 27:1 | 53:1 | 1078.82 | 254.04 | 0.7 | 1.73 | 2.70 | 4.23 | 593 |
| Aerotech D10W | 2.41 | 30:1 | 60:1 | 1365.60 | 266.00 | 0.6 | 1.43 | 2.80 | 4.03 | 566 |
| Apogee D10 | 2.41 | 32:1 | 60:1 | 1374.09 | 268.24 | 0.6 | 1.43 | 2.80 | 4.03 | 568 |
| Aerotech D21T | 2.38 | 50:1 | 77:1 | 1786.21 | 312.55 | 0.6 | 1.04 | 2.90 | 3.74 | 524 |
| Aerotech D24T | 2.59 | 52:1 | 99:1 | 1234.59 | 262.16 | 0.7 | 0.94 | 3.20 | 3.94 | 501 |
| Aerotech E25T | 2.21 | 56:1 | 107:1 | 2702.90 | 357.36 | 0.5 | 1.02 | 2.80 | 3.62 | 555 |
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.
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