| 摘要 |
The wing with the span (b) according to the invention has a main part (1), which has a substantially closed surface with respect to the flow (v) and is provided at its free end with an end section in the form of a wing grid. The wing grid has at least two parallel-staggered winglets (2). Such a wing grid as part of the wing span (b) takes over the intended profile circulation at the attachment point to the main part and subdivides said circulation approximately uniformly over the winglets. Thus, the same lift is produced in the end section with at least two winglets. Thus, for the wing the circulation distribution is more complete and the induced resistance is decreased. An upper or lower limit for the action is obtained, as a function of whether as a result of the fixed wing grid for the entire wing a rectangular circulation distribution is produced or only for the part of the overall span replaced by the wing grid. Thus, for the wing with wing grid there is a corresponding reduction of the induced resistance as compared with a conventional wing without a wing grid for the same resulting aspect ratio. (Fig. 2)
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