The J99 is a 37% J unknown motor from Aerotech.
| Average Thrust: | 87.4330 N |
| Certified By: | Tripoli Rocketry Association |
| Class: | 37% J |
| Delays: | 1000 seconds |
| Diameter: | 54.0000 mm |
| Length: | 231.0000 mm |
| Letter: | J |
| Manufacturer: | Aerotech |
| Name: | J99 |
| Peak Thrust: | 144.3050 N |
| Status: | In-Production |
| Thrust Duration: | 10.0000 s |
| Total Impulse: | 874.3305 Ns |
| Total Weight: | 899.0000 g |
| Type: | Unknown |
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