The I90LH (I90) is a 51% I unknown composite motor from Rattworks.
| Average Thrust: | 73.9544 N | 
| Class: | 51% I | 
| Delays: | |
| Designation: | I90LH | 
| Diameter: | 29.0000 mm | 
| Length: | 921.0000 mm | 
| Letter: | I | 
| Manufacturer: | Rattworks | 
| Name: | I90 | 
| Peak Thrust: | 137.7370 N | 
| Propellant: | APCP | 
| Status: | Unknown | 
| Thrust Duration: | 6.5500 s | 
| Total Impulse: | 484.4010 Ns | 
| Total Weight: | 684.5440 g | 
| Type: | Unknown | 
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