The J450DM () is a 66% J sparky motor from Aerotech.
| Average Thrust: | 458.3668 N |
| Certified By: | Tripoli Rocketry Association |
| Class: | 66% J |
| Delays: | 14 seconds (variable) |
| Designation: | J450DM |
| Diameter: | 54.0000 mm |
| Length: | 359.0000 mm |
| Letter: | J |
| Manufacturer: | Aerotech |
| Peak Thrust: | 541.4170 N |
| Status: | In-Production |
| Thrust Duration: | 2.3110 s |
| Total Impulse: | 1059.2857 Ns |
| Total Weight: | 1223.0000 g |
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