Spatial high-power nuclear power system based on closed Brayton cycle

Abstract

The invention provides a spatial high-power nuclear power system based on a closed Brayton cycle. The spatial high-power nuclear power system comprises a spatial nuclear reactor, a Brayton thermoelectric conversion subsystem, a heat dissipation subsystem, a cycle working medium storage and supply subsystem, an electric propulsion subsystem and an electric loading subsystem. Helium-xenon mixed gasis taken as a cycle working medium so as to realize efficient thermoelectric conversion, and a high-specific-impulse high-thrust electric thruster directly driven by high voltage is utilized for realizing efficient propulsion. According to the spatial high-power nuclear power system, the efficient thermoelectric conversion problem of a nuclear power air vehicle and the large-range electric power adjusting problem are solved, and the problem that the high voltage of a motor end is not matched with the lower voltage of the electric thruster is solved.

Description

technical field

[0001] The invention relates to the field of aircraft power systems, in particular to a space high-power nuclear power system based on a closed Brayton cycle. Background technique

[0002] At present, space nuclear-powered aircraft mainly use isotope decay, and a small part of reactor nuclear power is still in the small power range within the kilowatt level. At the same time, in terms of thermoelectric conversion methods, static conversion such as thermocouples and thermions is still the main method, and the thermoelectric conversion efficiency does not exceed 10%. With the continuous development of aerospace technology, space vehicles show a trend of diversification of loads and complex tasks, and the composition of aircraft equipment is becoming more and more complex, and the demand for energy is gradually developing to hundreds of kilowatts or even megawatts. Therefore, it is necessary to develop a high-power, high-efficiency nuclear power system to meet ...

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