The J345 is a 45% J unknown composite motor from Contrail.
| Average Thrust: | 343.8990 N |
| Certified By: | Tripoli Rocketry Association |
| Class: | 45% J |
| Delays: | 1000 seconds |
| Diameter: | 38.0000 mm |
| Length: | 1219.2000 mm |
| Letter: | J |
| Manufacturer: | Contrail |
| Name: | J345 |
| Peak Thrust: | 881.0900 N |
| Propellant: | APCP |
| Status: | In-Production |
| Thrust Duration: | 2.7000 s |
| Total Impulse: | 928.5280 Ns |
| Total Weight: | 1118.0000 g |
| Type: | Unknown |
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