| 摘要 |
The presented invention gives methods to construct two types and three kinds of variable area aircraft or kite wings. The wings share a common method of increasing or decreasing in area through fixed fuselage or fixed wing spars and opposing travel, travelling wing spars to which spars may be attached described airfoil forms or plates. Doubled back and threaded about these fixed and travelling spars are flexible, strong and laterally stable wing membranes cut in patterns to match the extensible framework of the fixed and travelling spars. The wing varies in area when the travelling spars are mechanically 'gear train' actuated and the as yet un-utilized portion of the wing membrane is drawn from the internal wing stowage space. This unfurling process is reversible, the wing membrane may also be drawn back into the internal wing stowage space. The invention also gives a method to construct wingtip aelerons suitable for one of the two presented types of variable area wing. The attached wingtip aelerons may be actuated at any variable area wing position. Shown are three methods to actuate the described wings to the open and close positions. Also described are some details of the wing's construction and a mechanism which if correctly applied will allow any of the presented wings to retain a calculated or empirically produced optimal wing attitude and trim.
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