Slotted flow guide piece type high lift device

Abstract

The invention provides a slotted guide vane type high lift device. A method comprises the steps: performing slotting on an airfoil upper surface and an airfoil lower surface; performing rounding and shaping treatment on the seam opening A1, the seam opening B1, the seam opening C1, the seam opening B2 and the seam opening C2; performing second-time rounding and shaping treatment on the slotted position, namely the position A1 of a slotted opening, of the wing type rear part of the slotted wing, the radius of an inscribed circle ranges from 0.05 c to 0.4 c, and forming a flow deflector by the cut rounding; enabling the flow deflectors to move upwards in the normal direction of the underground surface at the thickest positions of the flow deflectors, wherein the moving range is 0.005 c-0. 2 c; finally, forming the layout that the flow deflectors are additionally arranged at the seam opening, and obtaining the slotted flow deflector type high lift device. According to the slotted flow deflector type high-lift device, the maximum lift coefficient of the airfoil can be remarkably improved, the stall characteristic of the airfoil is greatly improved, the slotted flow deflector type high-lift device is a simple and efficient novel high-lift device, and then the aerodynamic performance and the control stability of an aircraft are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of airfoil design, and in particular relates to a slotted deflector type high-lift device. Background technique [0002] At present, traditional high-lift devices often adopt the form of multi-section wing structure, which is bulky and complicated, which increases the weight of the aircraft, and the engineering efficiency is not high enough to meet the current needs of efficient take-off and landing of aircraft. [0003] In order to solve the above problems, slotted airfoils appear in the prior art, such as figure 1 As shown, it is a structural diagram of a slotted airfoil that appears in the prior art, and its principle is: a part of a complete airfoil is deducted to achieve the purpose of slotting. Slotting an airfoil is a passive flow control method. However, the existing slotted airfoils have limited lift-increasing effect, that is, the effect of increasing the maximum lift coefficient is limited, and ...

AI Technical Summary

Problems solved by technology

However, the existing slotted airfoils have a limited effect of increasing lift, that is, the effect of increasing the maximum lift coefficient is limited, and the effect of improving the stall characteristics of the airfoil is limited, which leads to a limited effect of improving the aerodynamic performance and control stability of the aircraft.

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