| 摘要 |
PROBLEM TO BE SOLVED: To provide a rib for a wing excellent in lightweight properties, high strength, and low cost (structure simpleness).SOLUTION: A rib R for a wing includes a web 1 and a flange 2 provided at an end of the web 1. The web 1 and the flange 2 are integrally constructed. The web 1 has a core 3 inside. The relation of (a thickness of a cover layer portion 4 covering the core 3 at a position of an end portion of the internal core)>(a thickness of the cover layer portion 4 covering the core 3 at a position of a center portion of the internal core 3) is satisfied. |
