Preliminary Neutronic Design and Thermal-Hydraulic Feasibility Analysis for a Liquid-Solid Space Reactor Using Cross-Shaped Spiral Fuel. - Qiu, Zhichao; Zhuang, Kun; Wang, Xiaoyu; Gao, Yong; Cao, Yun; Liu, Daping; Chen, Jingen; Wang, Sipeng (Energies (19961073), 2026)