1. I found a winglet in the desk.

2. Therefore, morphing winglet with retractable grid has the potential of improving aircraft takeoff performance.

3. Then, to a certain tip winglet, there is a best leakage exists.

4. Finally, the closed-loop control system for the morphing winglet has been presented as well.

5. The design of the winglet on the wingtip of a plane is a multifactor design, it is relatively complicated in the design of an aerofoil due to the influence of no lesser parameters.

6. It is important also to note that the winglet and non winglet models also have their own flight models, and the correctly simulated differences in performance...

7. Modification of winglet is adopted to raise the lift-drag ratio of the UAV for extension endurance, for enlarge range and for increase ceiling.

8. The experimental investigation of the effect of winglet on the spatial vortex of slender body at high angle of attack is presented.

9. Calculations have shown that the performance is in its best when fixing the tip winglet on the suction-side.

10. During the selection process, the white eye with phenotype was the first selected goal, followed by the ebony body kept and the long winglet was discarded.

11. The results of practical design showed that this method can be used in the design of winglet.

12. In this paper, a numerical method is used to investigate the effects of a winglet attached to an axial fan on the performance.