Abstract
Aiming at the problem of insufficient power of space nuclear power supply in deep space exploration, a new type of space nuclear power source is proposed by combining two power generation methods of thermionic thermoelectric conversion and alkali metal thermoelectric conversion. Safety parameters such as core effective multiplication factor, power peaking factor, coolant cavitation coefficient, and shutdown depth are calculated; and performance parameters such as the work function of receiving pole and the current density of the alkali metal thermoelectric conversion system are analyzed. Then, the efficiency of the coupled power generation system is compared with that of the thermionic thermoelectric conversion and the alkali metal thermoelectric conversion space nuclear power systems. It is shown that the power generation efficiency of the new system is increased by about 6% and about 10% respectively compared with the other two systems. Finally, a dynamic model is established for analysis to ensure the stable operation of the nuclear power supply, which provides a theoretical basis for the design of high-power nuclear power supply.
| Translated title of the contribution | Design and Performance Research of Megawatt-class Space Nuclear Power System for Lunar Rockets |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 696-704 |
| Number of pages | 9 |
| Journal | Yuhang Xuebao/Journal of Astronautics |
| Volume | 43 |
| Issue number | 5 |
| DOIs | |
| State | Published - 30 May 2022 |
| Externally published | Yes |
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