Abstract
Development of an envelope with high specific strength is one of the critical key technologies for the stratospheric platform (SPF) airship. As for the envelope materials, tensile strength of 100kgf/cm with weight about 200gram/m^2 is already attained. Rather than the fabric material strength itself, the joint strength is critical in the construction of the airship. In this report, high temperature tensile strength and creep strength are tested for the envelope material with overlap joint 20-80mm in width.
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