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291results about "Cosmonautic safety/emergency devices" patented technology

Spacecraft potential active control device based on helicon wave plasma and application thereof

The invention discloses a spacecraft potential active control device based on a helicon wave plasma, comprising a discharge chamber, a magnet and a potential control electrode. The magnet is externally arranged on one end of the discharge chamber; a radio-frequency antenna is winded outside the discharge cavity and is adjacent to the magnet; the position of the discharge chamber working medium gas inlet of a discharge chamber working medium gas pipe is not beyond the front end of the adjacent radio-frequency antenna; the potential control electrode which is electrically connected with the conductive structural element of a spacecraft is arranged in the discharge cavity; a radio-frequency source is used for providing power supply for the radio-frequency antenna; and the working medium gas is ionized into the plasma, under the action of the electromagnetic field generated by the radio-frequency antenna and the magnetic field generated by the magnet. The invention further discloses the application of the spacecraft potential active control device based on the helicon wave plasma. The spacecraft potential active control device based on the helicon wave plasma has the advantages of low power consumption, light weight of used working medium, high potential control efficiency, high starting frequency and is superior to the prior art in the spacecraft potential control and the orbit energization effect risk control.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG

Pyramid micro-truss laminboard type bearing and thermal protection integrated structure containing runners

The invention discloses a pyramidal micro-truss sandwich plate bearing and thermal protection integrated structure with flow channels, which includes at least one structural unit, the structural unit includes an upper panel, a lower panel and a core, and the core includes multiple A micro-truss unit cell, the micro-truss unit cell is formed by connecting the tops of two pyramid-shaped lattice unit cells, and the pyramid-shaped lattice unit cell is a pyramid formed by four rods with circular cross-sections type structure, the left and right ends of the upper panel are respectively provided with flow channel wall plates extending towards the direction of the core. The present invention can improve the bearing capacity, defect resistance and impact protection capacity of the present invention at the same time. The flow channel is arranged near the heat source to further improve the heat dissipation effect. By adjusting the flow rate of the cooling liquid, the temperature of the lower panel can be efficiently controlled in one In an appropriate range, it is more conducive to controlling the sealing, reducing the amount of fluid used to reduce the overall weight coefficient of the structure, and the best performance can be obtained by adjusting the size of each part.
Owner:DALIAN UNIV OF TECH
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