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    • 8. 发明专利
    • STFAM LIGHT AIRPLANE
    • JP2001206293A
    • 2001-07-31
    • JP2000341461
    • 2000-11-09
    • GOODEY THOMAS JOHN
    • GOODEY THOMAS JOHN
    • B64B1/58B64B1/00B64B1/24B64B1/38B64B1/62B64B1/70F01K15/02
    • PROBLEM TO BE SOLVED: To provide a free flying balloon or a light airplane such as an airship, whose envelope is charged with steam floating gas to provide buoyancy. SOLUTION: This light airplane is equipped with a drain valve 3 and a hose 7 for preventing steam from escaping from the envelope 1 and discharging water condensed to stay inside the envelope 1, and the drain water may be released to the atmospheric air or the airplane may be equipped with a boiler for re-boiling the drain water to become steam and returning the same to the envelope 1. The availability factor of the boiler is variable, and equipped with a water storing tank for temporarily storing water. When the light airplane is an airship, a propulsion means is a steam engine SE supplied with pressurized steam from the boiler and returning the drain steam to the envelope 1. The steam is supplied from the boiler directly to the envelope 1, and the quantity and proportion of steam supplied directly to the envelope 1 and steam supplied to the steam engine SE are variable.