Alexander Gorshkov, a designer from Penza, has developed an isobaric internal combustion piston engine with an unusual architecture. The unit features eight cylinders, a radial configuration, and a flat cam mechanism instead of a classic crankshaft.

The design is intended for use in light aviation and light transport. According to Gorshkov's calculations, the engine, with dimensions of about 350 mm and a displacement of about 1.6 liters, can produce up to 72 kW in forced mode or about 34 kW in economic mode.

The stated mass of the structure is about 4 kg, which gives an estimated specific mass of up to 0.05–0.1 kg/kW depending on the operating mode.

The key element of the scheme is a common receiver for the sub-piston cavities and separate valve circuits, ensuring an isobaric combustion process. This reduces peak loads on the piston group and decreases the required mass of power elements.

A lubrication system through elastic "printing" elements in the lower cylinder cover is separately claimed. It eliminates the classic oil film with carry-over into the sub-piston space.

The development is aimed at the 30–1000 kW power segment, where traditional gas turbine and classic piston schemes face limitations in terms of mass and efficiency.