We found that water overlay on a metal layer is more effective than solid overlay. By using this target we demonstrated the successful flight of paper‐airplane of 5 cm‐size over a distance of 1–2m. In this paper, repetitive water supply system and levitation system are proposed for practical application, and examined by experiments. We succeeded in driving an object continuously using repetitive water supply and air slider. We also succeeded in driving 300g object by 0.5J laser using these equipments. In this paper, we try to find out a new possibility of water‐powered laser propulsion. © 2004 American Institute of Physics