A slotted deflector type increasing lift device

Abstract

The invention provides a slotted deflector type lifting device, which is slotted on the upper surface of the airfoil and the lower surface of the airfoil; rounding is performed at points A1, B1, C1, B2, and C2 of the slot. Shape treatment; the slot position on the rear part of the slotted airfoil, that is, the position of the slot crossing A1, is subjected to the second rounding and shaping treatment. The radius of the inscribed circle is 0.05c ~ 0.4c, and the cut circle forms the deflector ;Move the deflector upward along the normal direction of the local subsurface at the thickest position of the deflector, and the moving range is 0.005c~0.2c, and finally form the layout of the slotted crossing to increase the deflector, that is, to obtain the slotted deflector Lifting device. The slotted deflector type high-lift device provided by the present invention can significantly improve the maximum lift coefficient of the airfoil, and the stall characteristic of the airfoil is greatly improved. It is a simple and efficient new high-lift device, and further Effectively improve the aerodynamic performance and control stability of the aircraft.

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.

Images