Composite material structure manufacturing jig, method of manufacturing the same, and method of manufacturing composite material structure

A composite material structure manufacturing jig used when manufacturing a composite material structure by adhering prepreg to a framework structure including a frame component that includes a channel extending along a longitudinal direction of the frame component, the composite material structure manufacturing jig being inserted in the channel of the frame component and used therein, the composite material structure manufacturing jig comprising:

• a tubular body formed of an elastic material containing a reinforcement fiber, the tubular body including a trapezoidal transverse section that is a cross section orthogonal to a longitudinal direction of the tubular body, the trapezoidal transverse section including an upper base and a lower base longer than the upper base, wherein
• an inner surface of the tubular body is coated with a gas barrier layer, and
• an interface between the gas barrier layer and the tubular body is treated by a surface treatment.