Dual-mode space nuclear reactor core and dual-mode space nuclear reactor

The embodiment of the invention discloses a dual-mode space nuclear reactor core and a dual-mode space nuclear reactor, relates to a space nuclear reactor, and solves the problems that a coolant loop or a heat pipe is arranged in an ultrahigh-temperature reactor core of a nuclear heat reactor, so that the complexity of the reactor core is increased, and the realizability of a whole system is reduced. The dual-mode space nuclear reactor core comprises a nuclear fuel, a radial reflecting layer and an axial reflecting layer, a gas channel is arranged along the interior of the nuclear fuel and used for circulating a gas propelling medium, the radial reflecting layer is arranged on the radial periphery of the nuclear fuel, the axial reflecting layer is arranged at the axial end of the nuclear fuel, heat removal channels extending in the axial direction of the nuclear fuel are arranged between the radial reflecting layer and the nuclear fuel between the radial reflection layer and the axial reflection layer, and he