Abstract: A laser produced plasma (LPP) light source comprises a rotating target assembly supplying a target into an interaction zone with a focused beam of a high-repetition-rate pulsed laser. High effective cooling of the light source is provided by thermal radiation of a peripheral part of the rotating target assembly and through a meander-shaped gap between the rotating target assembly and a fixed heat exchanger with a gas blowing through the slit gap. In an embodiment, a sealing between the vacuum chamber and a shaft of rotating drive unit is provided by a magnetic fluid seal (MFS) with an additional heat exchanger. A heat transfer from the rotating target assembly is provided through the shaft and MFS to additional heat exchanger and by convection air cooling of a counterweight of the rotating target assembly fixed on the shaft. High brightness and high output power of LPP light source are provided.

Abstract: An aerodynamic lifting-thrusting propulsion device has a frame with an axis, relative to which the frame is arranged with a possibility of rotation, a cardan joint having a cross, at least two aerodynamic surfaces, each of which is mounted on the cardan joint with a possibility of oscillations synchronously with a rotation of the frame, a rod mounted on the frame, the cardan joint being connected with the rod, the cross of the cardan joint having axes which are mutually perpendicular and located correspondingly in mutually perpendicular planes intersecting along an axis of the rod, one of the axes of the cross extending through an axis of rotation and an axis of the rod, the rod being arranged parallel to an axis of the frame, the axis of the frame being connected with each of the aerodynamic surfaces by a mechanical transmission providing a rotation of the aerodynamic surface synchronously and opposite to a rotation of the frame.

Abstract: A method of producing a lifting force and a horizontal force by aerodynamic surfaces includes the steps of moving aerodynamic surfaces along a circumference and providing their oscillations; rotating each of the aerodynamic surfaces synchronously with the movement along the circumference, in a direction which is opposite to it, relative to an axis of rotation which is parallel to an axis of the movement along the circumference, with an angular speed which is equal to an angular speed of the movement along the circumference, and performing oscillations of each of the aerodynamic surfaces synchronously with a rotation relative to mutually perpendicular axes located correspondingly in two mutually perpendicular planes which intersect along an axis of rotation of the aerodynamic surfaces, wherein one of them passes through an axis of the movement along the circumference and the axis of rotation.