11. The aircraft is made from tubing, with its wing covered in Dacron sailcloth . 12. The aircraft is made from tubing, with the wing covered in polyester sailcloth . 13. The aircraft is made from tubing, with the wing covered in Dacron sailcloth . 14. The wing is covered in Dacron sailcloth , with many models using Mylar reinforcing. 15. Post-medieval mill sails have a lattice framework over which the sailcloth is spread. 16. The airframe is made from bolted-together aluminium tubing and covered in Dacron sailcloth . 17. The aircraft is made from bolted-together aluminum tubing, covered in Dacron sailcloth . 18. The wing is covered in Dacron sailcloth . 19. The aircraft is made from aluminum tubing, with the wing covered in polyester sailcloth . 20. The aircraft structure is made from tubing, with the wing covered in Dacron sailcloth .
