T' J642 is a 71% J unknown composite motor from Contrail.
| Average Thrust: | 638.0240 N |
| Certified By: | Tripoli Rocketry Association |
| Class: | 71% J |
| Delays: | 1000 seconds |
| Diameter: | 54.0000 mm |
| Length: | 914.4000 mm |
| Letter: | J |
| Manufacturer: | Contrail |
| Name: | J642 |
| Peak Thrust: | 1,482.7400 N |
| Propellant: | APCP |
| Status: | In-Production |
| Thrust Duration: | 1.7200 s |
| Total Impulse: | 1097.4000 Ns |
| Total Weight: | 1791.0000 g |
| Type: | Unknown |
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