The M1491 is a 10% M unknown composite motor from Contrail.
| Average Thrust: | 1,675.7900 N |
| Certified By: | Tripoli Rocketry Association |
| Class: | 10% M |
| Delays: | 1000 seconds |
| Diameter: | 75.0000 mm |
| Length: | 1339.8500 mm |
| Letter: | M |
| Manufacturer: | Contrail |
| Name: | M1491 |
| Peak Thrust: | 2,725.0000 N |
| Propellant: | APCP |
| Status: | In-Production |
| Thrust Duration: | 3.3500 s |
| Total Impulse: | 5613.9100 Ns |
| Total Weight: | 4876.0000 g |
| Type: | Unknown |
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