| 摘要 |
PROBLEM TO BE SOLVED: To provide a propulsion fuel charging method for a tank of a flight body capable of remarkably shortening a charging time of the propulsion fuel, and remarkably improving the charging workability. SOLUTION: An upper central part of an upper tank body 3a is provided with a propulsion fuel discharging port 7, and a lower central part of a lower tank body 3b is provided with a pressurized fluid charging port 8. A space surrounded by a bladder film 5 mounted in the tank bodies 3a, 3b and an inner face 3x of the upper tank body 3a is used as a propulsion fuel storage chamber 9, and a space surrounded by the bladder film 5 and an inner face 3y of the lower tank body 3b is used as a pressure chamber 10. A vacuum pump 16 is connected to the discharging port 7 through the piping 11, a two-way solenoid selector valve 12, the piping 13, a three-way solenoid selector valve 14 and the piping 15, and a two-way solenoid selector valve 17 is mounted on the way of the piping 15 through the piping 18 to release the pressure in the propulsion fuel storage chamber 9.
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