Patent ID: 6290172
Filing Date: 2001-09-18
Classification: B64B

Abstract:
A super-pressure balloon, equipped with a pressure-resistant gas bag prepared by a plurality of spindle-shaped gores formed by an airtight film material, with both side edge parts of the gores mutually connected together, and tension-resistant load tapes fitted to both side edge parts of the gores along connection lines of both side edge parts, the balloon capable of maintaining an internal gas pressure of the gas bag without discharging gas corresponding to an increase in buoyancy even after the gas bag has inflated to its maximum capacity, whereinbased on a shape of a Natural-Shaped Balloon which is prescribed that tension is generated in only a vertical direction of a film material of the gas bag and no tension is generated in a circumferential direction, a width and a length of each gore are formed larger,a length of each load tape is set to a size corresponding to the length of both side edge parts of the shape of the gores of the Natural-Shaped Balloon,both side edges of each gore are connected to the load tapes in a state that wrinkles are formed uniformly in a shortened state on both side edges in the length corresponding to the length of the load tapes, andthe film material of each gore swells toward the outside between adjacent load tapes when a gas is filled into the pressure-resistant gas bag.