Open Access
Review

Table 3

Space Brayton cycle projects

Project Nation Reactor Medium Electric (kW) Efficiency (%)
SP-100 US Lithium fast reactor (LFR) He-Xe 10–100 20.7
Prometheus US HTR He-Xe 200 20
SAFE US HPR He-Xe 100 25
S4 US HTR He-Xe 93.6 21.4
Skylon UK He
TERRA Brazil HPR He
TEM Russia Sodium fast reactor (SFR) He-Xe 1000
ERATO France SFR He-Xe 20 16.8
HTR 20 17.3
LFR 20 17.6
Megawatt space Nuclear reactor China HPR He-Xe 1000

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