論文ID: 25-00174
Deployable wings reduce storage volume when an aircraft is not in flight. Although deployable wing structures have been extensively researched, very few such structures with high storage efficiency and stiffness have been put into practical use. To overcome this issue, we propose applying a convex boom and bellows structure, a lightweight, stiff, and simple structure widely used in deployable space structures, to the spars and ribs of the main structure of a deployable wing. The feasibility of a deployable wing main structure consisting of a convex boom and bellows-type ribs is verified. The structural characteristics of specimens of the proposed deployable wing main structure are evaluated through analysis and experiments. The proposed deployable wing main structure has high storage efficiency and stiffness. When the number of spars of the convex boom was increased from one to two and the cross-sectional thickness of the bellows-type ribs was increased from 2.0 to 3.0 mm, the bending stiffness per unit mass increased by 38.1% and the torsional stiffness per unit mass increased by 97.1%. The structural evaluation results demonstrate that not only the convex boom but also the bellows-type ribs significantly contribute to the structural stiffness of the deployable wing, and the feasibility of the proposed deployable wing main structure.
