Abstract: An infrared radiation device includes a body including a heat generating part and first and second metamaterial structures that are capable of radiating infrared rays having a peak wavelength of a non-Planck distribution upon receipt of thermal energy from the heat generating part. The first metamaterial structure is disposed on a first surface side of the heat generating part, and the second metamaterial structure is disposed on a second surface side opposite to the first surface side of the heat generating part.

Abstract: An infrared heater includes a heater body and a casing. The heater body includes a heating element and a metamaterial structure capable of emitting infrared radiation having a peak wavelength of a non-Planck distribution when thermal energy is supplied from the heating element. The casing has an interior space in which the heater body is disposed and whose pressure is reducible. In addition, the casing includes an infrared radiation transmitting portion capable of transmitting the infrared radiation emitted by the metamaterial structure to an outside of the casing.

Abstract: A heat transfer thruster by which performance can be enhanced by realizing optimal temperature distribution for heating propellant without complicating the structure. In the heat transfer thruster, propellant flows through two pipes (102, 104) into the thruster body (106) thence flows through a channel (110) formed in the thruster body (106) to the nozzle side while being heated from the thruster body (106) which is heated by a heat source, and reaches a plenum chamber (114) in front of a nozzle before being injected from a propellant outlet along the outer wall (126) of a plug nozzle (112). Heat from the heat source is transmitted directly to the nozzle through the inner wall (128) of the plug nozzle (112). In other words, the hollow section (118) of the plug nozzle (112) functions as a heating section for the nozzle.