The M1939W (M1939) is a 1% N reloadable composite motor from Aerotech.
This reload fits an RMS 98/10240 motor case.
Aerotech's White Lightning propellant produces a brilliant white flame and white smoke.
| Average Thrust: | 1,477.1200 N | 
| Casing: | RMS 98/10240 | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 1% N | 
| Delays: | Plugged | 
| Designation: | M1939W | 
| Diameter: | 98.0000 mm | 
| Formula: | White Lightning | 
| Length: | 751.0000 mm | 
| Letter: | N | 
| Manufacturer: | Aerotech | 
| Name: | M1939 | 
| Peak Thrust: | 2,084.1600 N | 
| Propellant: | APCP | 
| Status: | In-Production | 
| Thrust Duration: | 7.0000 s | 
| Total Impulse: | 10339.8000 Ns | 
| Total Weight: | 8844.5000 g | 
| Type: | Reloadable | 
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