T' K990DM (K990) is a 45% K unknown sparky motor from Aerotech.
| Average Thrust: | 870.7993 N | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 45% K | 
| Delays: | 14 seconds | 
| Designation: | K990DM | 
| Diameter: | 54.0000 mm | 
| Length: | 598.0000 mm | 
| Letter: | K | 
| Manufacturer: | Aerotech | 
| Name: | K990 | 
| Peak Thrust: | 1,068.8280 N | 
| Status: | In-Production | 
| Thrust Duration: | 2.1370 s | 
| Total Impulse: | 1860.8982 Ns | 
| Total Weight: | 2109.0000 g | 
| Type: | Unknown | 
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