The Reloadable Motor System designed and manufactured by Aerotech is a means to use a reloadable model rocket engine. Often referred to as the RMS, the reloadable motor system is the reusable casing of the reloadable rocket engine.

The reusable reloadable motor system consists of three parts:

• The case
• The Aft Closure
• The Forward Closure

Grease to assist in assuring a tight seal is generally used when reloading the motor system.