The manufacturer is "Circom Development Corp." in Puyallup, Washington, USA. They designed a multi-fuel engine.

-Motor of very special design suitable for multiple applications, including the aeronautical version as we can se below.

"Circom CRX-P3 with free exhaust"

-At least the look is beautiful. The operation is totally atypical since it consists of some plates that act as multiple pistons when creating several chambers at the time during their rotation.

"Patent drawing of the three disks”

-In their rotation they create combustion chambers and through gears they are coupled to the power output. It is not a simple idea.

"Side view of Circom CRX-P1 engine"

-The CRX-P1 is known as the basic engine for development.

-The CRX-P2 is a split dual rotor design for opposed balanced combustion cycles. The design development was completed under contract with NASA.

-The CRX-P3 is a multi-purpose single rotor engine in the 50-75 HP range and is designed for variable fuel type usage. The initial market application is the experimental aircraft industry, but also has secondary applications in the marine and small utility engine fields.

"Motor Circom CRX-P3 para aviación"

-The CRX-P4 is a single rotor system with dual piston lobes.

-The CRX-P5 is a hybrid (explosion engine and an electric motor within the same housing).

"Vista frontal del motor Circom CRX-P1"

-With the shown view, that of the PTO (Power-Take -Off) outlet we have the intake manifold with the four ducts towards the combustion chambers. The Delco in upright position and two of the exhausts. We can also see the cooling fins.