| 摘要 |
PURPOSE:To improve safety during high-speed traveling or the like by forming an air chamber as a double-chamber and preventing sudden diffusion of air and lowreing of pressure in case of occurence of damages and the like to a tube. CONSTITUTION:A tube 2 is axially divided into two chambers 3, 4 which are formed respectively as air chambers and equipped with air filling valves 5, 6. Even if one of the air chambers 3, 4 is damaged, since the other one still is still alive, either the chamber 3 or 4 is inflated to expand the tube 2. So, sudden lowering of the pressure does not occur even if it is lowered to some extent, and the traveling can be continued. Thus, safety during high-speed faxiing and at landing and the like of the aircraft can be improved. |
