The invention pertains to the field of power engineering and may be applied to convert kinetic and thermal energy of a working medium into mechanical work. The method includes swirling of a pre-compressed working medium, its expansion in an actuating device to produce mechanical work in the form of rotation of the shaft, and discharge of the working medium from the actuating device. The working medium is swirled in the actuating device along a spatial trajectory in the form of a conical helix, the projection of which on a plane positioned at an angle to the axis of rotation is a curve having at least two breakpoints.

A hydrogen circulation system for use with a fuel cell stack includes a supply line for receiving hydrogen gas from a supply of hydrogen, a fuel cell for receiving hydrogen gas from the supply line, an excess hydrogen line for receiving excess hydrogen from the fuel cell, and a turbocharger coupled to the excess hydrogen line and the supply line, to receive excess hydrogen from the excess hydrogen line, compress it, and return it to the supply line, the turbocharger being powered in use by hydrogen gas from the supply line.

A nozzle for use with a rotor blade for a reaction drive type helicopter includes a first wall, a second wall opposing the first wall, and sidewalls extending between the first wall and the second wall enclosing a cavity having an upstream end and a downstream end. The nozzle includes an inlet section for receiving a gasflow at the upstream end. The distance between the first wall and the second wall reduces to a throat downstream of the inlet section. An expansion section extending from the throat, downstream thereof.

A nozzle for use with a rotor blade for a reaction drive type helicopter includes a first wall, a second wall opposing the first wall, and sidewalls extending between the first wall and the second wall enclosing a cavity having an upstream end and a downstream end. The nozzle includes an inlet section for receiving a gasflow at the upstream end. The distance between the first wall and the second wall reduces to a throat downstream of the inlet section. An expansion section extending from the throat, downstream thereof.

A disc turbocharger includes a multi-disc engine in which each disc engine includes a turbine blade, a compressor blade, and a bearing without requiring a shaft between the turbine blade and the compressor blade. The power produced by each turbine blade is consumed by its own joined compressor. The disc turbocharger has a multi-disc engine that works as a multi-stage turbocharger with a smaller size and no piping between the turbochargers. The disc turbocharger uses a waste spool valve for control of the.

An automobile drive system that basically uses an electrical motor to power the vehicle includes a steam generator that drives a steam turbine that turns a generator to provide electricity to continually charge the battery that provides energy to the electrical drive motor. With this system the battery is continually being charged and does not have to periodically be plugged into a power source to charge the battery. Also, an additional generator/alternator can be driven by the electrical drive motor or steam turbine to provide additional electrical power as needed.

An automobile drive system that basically uses an electrical motor to power the vehicle includes a steam generator that drives a steam turbine that turns a generator to provide electricity to continually charge the battery that provides energy to the electrical drive motor. With this system the battery is continually being charged and does not have to periodically be plugged into a power source to charge the battery. Also, an additional generator/alternator can be driven by the electrical drive motor or steam turbine to provide additional electrical power as needed.

A rotary manifold for a rotor assembly of a cohesion-type drive includes a manifold body extending along a drive axis for rotation thereabout, a first ductwork internal the body for fluid communication with a plurality of first chambers of the drive, and a second ductwork internal the body for fluid communication with a plurality of second chambers of the drive. The second ductwork is in fluid isolation of the first ductwork.

A rotary manifold for a rotor assembly of a cohesion-type drive includes a manifold body extending along a drive axis for rotation thereabout, a first ductwork internal the body for fluid communication with a plurality of first chambers of the drive, and a second ductwork internal the body for fluid communication with a plurality of second chambers of the drive. The second ductwork is in fluid isolation of the first ductwork.

A fluid turbine assembly (1), comprising: at least a main rotation shaft (2) being configured to rotate around a longitudinal rotation axis (X), a main rotor (3) comprising a central portion and an outer portion, the main rotor (3) being installed on the main rotation shaft (2) in such a way to bring the main rotation shaft (2) in rotation with the main rotor (3), an inlet assembly (4) for a fluid, said inlet assembly (4) being configured to drive fluid to the main rotor (3), wherein said inlet assembly (4) comprises a Venturi conduit (5) comprising a first inlet (5a) configured to be connected to, and to be fed in use with, a pressurized primary fluid source, and a second inlet (5b) configured to be submerged into, and to drag fluid from, a secondary fluid source (6) to the rotor (3) under the dragging effect caused by the fluid flowing in said first inlet (5a).