Abstract: The invention relates to propeller-type horizontal-axis wind turbine assemblies. All of the present assembly variants comprise, mounted on a tower, a wind turbine with two coaxial wind propellers on a rotating platform, a gearbox, systems for controlling the pitch angles of the blades and the position of the platform, and an electric generator. The design of the assemblies additionally includes improvements which make it possible to increase the efficiency with which the energy of the wind is utilized, increase electricity output, reduce service time, simplify manufacture and use, increase reliability and working life, and eliminate infrasound.

Abstract: The invention relates to propeller-type horizontal-axis wind turbine assemblies. All of the present assembly variants comprise, mounted on a tower, a wind turbine with two coaxial wind propellers on a rotating platform, a gearbox, systems for controlling the pitch angles of the blades and the position of the platform, and an electric generator. The design of the assemblies additionally includes improvements which make it possible to increase the efficiency with which the energy of the wind is utilized, increase electricity output, reduce service time, simplify manufacture and use, increase reliability and working life, and eliminate infrasound.

Abstract: A rotary machine includes a rotor and a disk-shaped valve that contra-rotate within a cylindrical housing while in non-slipping contact with each other. The rotor includes one or more pistons. In one embodiment of the rotary machine, the valve includes a recess that is shaped epitrochoidally to accommodate the pistons as the pistons pass the valve. Each piston includes a seal that is in sliding contact with the surface of a lining of the recess as the piston passes the valve and that is otherwise in sliding contact with the surface of an inner lining of the housing. The linings and the seal are coated with a polishing composition, so that the seal and the lining are continuously polished as the machine operates. In another embodiment of the rotary machine, the rotor and the valve are shaped to be in constant mutual rolling contact.

Abstract: A rotary engine with one or more toroidal chambers defined by rotors that rotate within cylindrical housings. Pistons project into the chambers from the rotors. The pistons cooperate with valves to define compression regions and expansion regions in the chambers. The rotors, the pistons, the valves, or a combination thereof define or include combustion regions of constant volume wherein a fuel-air mixture compressed in the compression regions burns and then is ejected to the expansion regions. Fuel is injected into both the compression regions and the expansion regions, so that the engine operates according to the Trinkler cycle. In a first embodiment of the engine, the valves are rotary and include recesses that accommodate the pistons as the pistons pass the valves. As a piston transits from a compression region to an expansion region via a valve, the space in the valve recess not occupied by the piston is the combustion region.

Abstract: A rotary engine with one or more toroidal chambers defined by rotors that rotate within cylindrical housings. Pistons project into the chambers from the rotors. The pistons cooperate with valves to define compression regions and expansion regions in the chambers. The rotors, the pistons, the valves, or a combination thereof define or include combustion regions of constant volume wherein a fuel-air mixture compressed in the compression regions burns and then is ejected to the expansion regions. Fuel is injected into both the compression regions and the expansion regions. In a first embodiment of the engine, the valves are rotary and include recesses that accommodate the pistons as the pistons pass the valves. As a piston transits from a compression region to an expansion region via a valve, the space in the valve recess not occupied by the piston is the combustion region.