5 results about "Rf discharge" patented technology

The application discloses a method for realizing ionosphere aircraft stealth based on regulating and controlling electron distribution of tail area, first, evolution time scales under different non-extended parameters are calculated; and according to the superhot electron energy and particle flux per unit time required by different non-extended parameters, a radio frequency discharge plasma generator is controlled to generate plasma corresponding to the non-extended parameters; then, in the grid electric field, electrons enter the acceleration field area, and ions are directly discharged to the tail area of the aircraft without acceleration; the regulation and control duration under different non-extended parameters is determined by the evolution time scale corresponding to the non-extended parameter. The application changes the electron distribution of the ionosphere aircraft tail area by randomly injecting high-energy electrons into the tail area of the aircraft, regulates and controls the evolution law and characteristic scale of the non-linear local cavity in the tail area which cannot be eliminated, makes the anti-stealth method of monitoring the motion of the density cavity to detect the ionosphere stealth aircraft invalid, and thus realizes the stealth of the ionosphere stealth aircraft.

The embodiment of the invention discloses a radio frequency ion source system and a control method thereof, electronic equipment and a storage medium, and relates to the technical field of ion sources, the radio frequency ion source system comprises a power supply and control module, a radio frequency discharge unit, an ion extraction unit and a neutralization electron source; wherein the power supply and control module generates a radio frequency signal and a pulse voltage, outputs the radio frequency signal to the radio frequency discharge unit, and outputs the pulse voltage to the ion extraction unit; working gas in the radio frequency discharge unit generates plasma under the excitation of a radio frequency signal, and the plasma is output to the ion extraction unit; the plasma in the ion extraction unit passes through the ion extraction unit under the driving of the pulse voltage and generates a pulse ion beam; and the neutralization electron source generates an electron flow at the rising edge of the pulse voltage, and synchronously outputs the electron flow and the pulse ion beam to obtain a pulse beam current. According to the embodiment of the invention, the pulse beam with concentrated energy spectrum distribution and low energy broadening is realized.

The utility model relates to the technical field of radio frequency discharge cavities, in particular to an active cooling hidden radio frequency discharge cavity. According to the technical scheme, the device comprises a double-layer glass cylinder with a cavity formed in the curved surface and a coil arranged in the cavity in the double-layer glass cylinder; the double-layer glass cylinder is provided with a cooling assembly used for cooling the double-layer glass cylinder and the coil at the same time. The cooling assembly comprises a water inlet pipeline which is fixedly connected to the lateral lower part of the double-layer glass cylinder, and a water outlet pipeline which is fixedly connected to the lateral upper part of the double-layer glass cylinder. And the water inlet pipeline and the water outlet pipeline are communicated with the cavity of the double-layer glass cylinder. According to the utility model, simultaneous cooling of the copper coil and the discharge cavity is realized, the coil is hidden in the double-layer glass cylinder, external interference is reduced, and the design of the double-layer glass cylinder enables the contact area between the cooling water and the copper coil as well as between the cooling water and the discharge cavity to be minimized, thereby reducing the negative influence of the cooling water on the radio frequency coupling efficiency.

This invention provides a temperature control system and a control method for such a system that can quickly initiate a specific mode through the configuration and control of the refrigerant circuit. [Solution] The system comprises a refrigerant circuit 10 through which refrigerant RF circulates, a heat transfer medium HM that exchanges heat with the refrigerant RF circulates in a heat transfer medium HM circuit 20, and a control unit 40. The heat transfer medium circuit 20 has an indoor air conditioning unit 23 that heats a temperature-controlled object using the heat transfer medium HM. In heater mode, the control unit 40 mixes the heat transfer medium HM discharged from the condenser 12 with the heat transfer medium HM discharged from the evaporator 14, flows the mixed heat transfer medium HM into the condenser 12 and the evaporator 14, and also flows the heat transfer medium HM discharged from the condenser 12 into the indoor air conditioning unit 23. The control unit 40 determines whether the refrigerant RF discharged from the condenser 12 is in a gas-liquid two-phase or liquid phase and controls the expansion valve 13.

The application discloses a kind of replenishment aircraft main structure and resource replenishment method, belong to spacecraft electric thruster field.Main structure is the propelling system after spacecraft cargo cabin is separated, including the communication of suction port, radio frequency ionization section, gas compression section, acceleration propelling section and neutral gas collection system in turn.Gas is introduced without shock wave through suction port, radio frequency ionization section generates plasma by radio frequency discharge, gas compression section compresses plasma by the aid of magnetic field gradient strengthening magnetic freezing effect, and acceleration propelling section accelerates ionized gas to form thrust;Neutral gas collection system recycles neutral gas after collision and recombination.Resource replenishment method realizes on-orbit replenishment by integration launch, separation and shunt, gas collection, orbit-raising replenishment-circulating collection.The application multiplexes spacecraft remaining structure, avoids separate launch cost, avoids shock wave interference, improves gas collection efficiency, prolongs spacecraft on-orbit life, and economic benefit is remarkable.