The F51NT (E51) is a 28% F unknown motor from Aerotech.
| Average Thrust: | 48.7691 N | 
| Certified By: | National Association of Rocketry | 
| Class: | 28% F | 
| Delays: | 4,6,8,10 seconds | 
| Designation: | F51NT | 
| Diameter: | 24.0000 mm | 
| Length: | 95.0000 mm | 
| Letter: | F | 
| Manufacturer: | Aerotech | 
| Name: | E51 | 
| Peak Thrust: | 71.3430 N | 
| Status: | In-Production | 
| Thrust Duration: | 1.0500 s | 
| Total Impulse: | 51.2076 Ns | 
| Total Weight: | 82.0000 g | 
| Type: | Unknown | 
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