抄録
We overview a new laser propulsion concept that uses water overlay. This system realizes 100-1000 times larger thrust than single layer propulsion. The various applications to ship, engine and airplane are demonstrated. As a future concept, the use of solar-energy-pumped laser is discussed. The unsteady energy like sunlight and wind power is accumulated and stored in the form of magnesium. When the energy is needed, the magnesium-water reaction is used to produce the electricity as well as heat sources. The reaction product MgO is deoxidized into magnesium again by lasers that are generated by solar energy or wind-power. With such processes, we are able to realize a sustainable society.
