Rocket Motor Guide
Rocketarium KSR-420S
Rocketarium - KSR-420S {Kit} (RK-KSR420S)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Estes A3T | 4.00 | 2:1 | 6:1 | 141.51 | 22.10 | 13.8 | 1.09 | 1.00 | 1.89 | 33 |
| Estes A10T | 3.89 | 2:1 | 12:1 | 357.07 | 22.25 | 1.9 | 0.90 | 1.00 | 1.70 | 35 |
| Quest C6 | 4.56 | 3:1 | 15:1 | 328.75 | 78.98 | 2.3 | 2.57 | 3.10 | 5.47 | 361 |
| Estes A8 | 4.28 | 3:1 | 9:1 | 237.86 | 26.86 | 3.4 | 0.81 | 1.20 | 1.81 | 36 |
| Apogee C4 | 4.30 | 4:1 | 11:1 | 265.51 | 85.48 | 2.4 | 2.38 | 3.20 | 5.38 | 401 |
| Estes C5 | 4.44 | 4:1 | 20:1 | 447.74 | 105.70 | 1.6 | 2.07 | 3.60 | 5.47 | 435 |
| Estes B4 | 4.37 | 4:1 | 12:1 | 322.53 | 53.31 | 1.9 | 1.08 | 2.30 | 3.18 | 127 |
| Weco C6 | 4.44 | 5:1 | 12:1 | 317.08 | 67.08 | 2.1 | 1.80 | 2.60 | 4.20 | 220 |
| Estes C6 | 4.52 | 5:1 | 14:1 | 361.09 | 104.12 | 1.8 | 1.90 | 3.60 | 5.30 | 394 |
| Estes B6 | 4.34 | 5:1 | 12:1 | 306.17 | 55.62 | 2.0 | 0.91 | 2.30 | 3.01 | 125 |
| Quest A6 | 4.24 | 5:1 | 11:1 | 299.22 | 25.34 | 2.2 | 0.42 | 1.20 | 1.42 | 24 |
| Quest A8 Q-Jet | 4.16 | 5:1 | 11:1 | 290.37 | 20.98 | 2.4 | 0.46 | 1.00 | 1.26 | 18 |
| FSI A6 | 4.27 | 5:1 | 11:1 | 284.27 | 20.23 | 2.1 | 0.50 | 0.80 | 1.10 | 13 |
| Aerotech C6W | 4.51 | 6:1 | 11:1 | 280.42 | 121.40 | 2.2 | 1.69 | 3.70 | 5.19 | 450 |
| Quest B6 | 4.27 | 6:1 | 14:1 | 378.16 | 63.93 | 1.9 | 0.78 | 2.60 | 3.18 | 144 |
| Apogee B7 | 4.02 | 7:1 | 14:1 | 402.81 | 69.21 | 1.6 | 0.82 | 2.70 | 3.32 | 168 |
| Aerotech D8 | 4.37 | 7:1 | 15:1 | 397.71 | 185.69 | 1.5 | 2.51 | 4.40 | 6.71 | 922 |
| Apogee C10 | 4.32 | 10:1 | 25:1 | 685.29 | 128.24 | 1.1 | 0.97 | 4.00 | 4.77 | 419 |
| Aerotech C12T | 4.47 | 10:1 | 20:1 | 510.55 | 125.17 | 1.4 | 1.02 | 4.00 | 4.82 | 402 |
| Aerotech D13W | 4.86 | 11:1 | 22:1 | 537.70 | 216.00 | 1.1 | 1.76 | 4.80 | 6.36 | 858 |
| Aerotech D10W | 4.61 | 12:1 | 24:1 | 645.60 | 228.28 | 1.1 | 1.46 | 5.00 | 6.26 | 855 |
| Apogee D10 | 4.61 | 13:1 | 24:1 | 649.19 | 228.07 | 1.1 | 1.46 | 5.00 | 6.26 | 852 |
| Aerotech D21T | 4.58 | 20:1 | 31:1 | 843.74 | 261.65 | 0.8 | 0.96 | 5.30 | 6.06 | 847 |
| Aerotech D24T | 4.79 | 21:1 | 40:1 | 630.42 | 222.26 | 1.1 | 0.97 | 5.20 | 5.97 | 747 |
| Aerotech E25T | 4.41 | 23:1 | 43:1 | 1248.38 | 311.90 | 0.6 | 1.03 | 5.30 | 6.13 | 964 |
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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