User:Mark A. Peters/sandbox

= Belt driven rim drive water jet "Peters Water Jet" =

Principal
The rim-driven water jet is a marine impeller which does not need a central hub for transmission of the driving torque. Conventional water jets need a shaft line which is driven by a turbine, a diesel engine or an electric motor. The more recent water jets consist of a conventional impeller which is arranged together with a center axis of rotation.

The blades of the rim-driven water jet are mounted on a ring which constitutes the impeller connected via belt to drive pulley powered by an electric motor or another power source.

Advantages and disadvantages
The largest advantage of this building principle is its increased efficiency of performance to traditional water jets and the low space requirement. It enables relatively simple integration in many applications. Since the blades are mounted to the rotor ring, there is no tip gap.

Disadvantage is a reduced efficiency due to increased friction losses in larger bearings and belt friction.

Uses and applications
The three main variance of this design is propulsion, hydro-generation, and circulation of any fluid.