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Wing surface fusion-type edge strips

An airfoil and edge strip technology, which is applied in the field of wing and edge deformation structure design, can solve the problem that edge strips are difficult in the design and layout of variant aircraft, the fusion of edge strips and airfoil surfaces has not been well solved, and it is easy to generate Interference and other problems, to achieve the effect of improving supersonic cruise and penetration capabilities, delaying the generation of local shock waves, and delaying airflow separation

Pending Publication Date: 2018-06-22
中国航空工业集团公司哈尔滨空气动力研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of changing the airfoil of the variant aircraft, the arrangement of the side strips and the changing trajectory of the wing (wing or canard) are very likely to interfere, and the fusion of the side strips and the wing surface has not been well resolved. , making the side strips tricky in the design and layout of the morph vehicle

Method used

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  • Wing surface fusion-type edge strips
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  • Wing surface fusion-type edge strips

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with examples, but the implementation of the present invention is not limited thereto.

[0015] The airfoil fusion edge strip proposed by the present invention has two use states. The first state, the edge strip and the wing surface separated state, both open state (see figure 1 ). In this state, the sidebar can generate strong vortex at high angle of attack, improve the flow field characteristics of the upper airfoil, delay airflow separation, increase airfoil lift, and improve the maneuverability of the entire aircraft. The second state, the edge strip and the airfoil joint state, both closed state (see figure 2 ). In this state, the edge strips are joined with the airfoil surface, and the upper surface of the edge strips and the upper airfoil surface realize the continuous second-order curvature (see image 3 ), the separation of air flow through the upper surface is greatly reduced, effec...

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Abstract

The invention relates to wing surface fusion-type edge strips (1) which are attached to the outer side of an aircraft fuselage and the front ends of aircraft wings (2), when the wing surfaces of the aircraft wings (2) are in an open state, the wing surface fusion-type edge strips (1) and the wing surfaces of the aircraft wings (2) are in a separated state, when the wing surfaces of the aircraft wings (2) are in a closed state, the wing surface fusion-type edge strips (1) and the wing surfaces of the aircraft wings (2) are connected, and the boundary of the connecting joint part reaches the maximum thickness of the wing profile of the upper wing surface of the aircraft wings (2), so that the upper surfaces of the fusion-type edge strips (1) and the upper wing surfaces (2) of the aircraft wings (2) form a second order curvature continuous curved surface. The wing surface fusion-type edge strips can improve the flow field characteristic of the upper wing surfaces of the wings (2), the wing surface lifting force is increased, the maneuvering ability of the whole aircraft is improved, the whole aircraft resistance is effectively reduced, the supersonic cruise lift-drag ratio of the whole aircraft is increased, and the supersonic cruise and penetration ability of the whole aircraft is effectively improved.

Description

Technical field [0001] The invention belongs to the field of aircraft design, and particularly relates to the design of deformation structures of wings and side bars. Background technique [0002] Mankind's exploration of improving the aerodynamic performance of aircraft by changing the aerodynamic shape has never stopped. Flying faster, higher, and farther has always been the dream of aviation technology staff. Due to technical limitations, when designing traditional fixed-wing aircraft, its aerodynamic performance can only be compromised under different flight mission states. Therefore, the active aircraft can only have good aerodynamic performance in a certain airspace range and a certain speed range. When leaving the design point, the aerodynamic performance drops very severely, which limits the maneuverability and flexibility of a model. The function and purpose are prominently single. [0003] Due to the above-mentioned series of performance bottlenecks in fixed-wing aircra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C3/36
CPCB64C3/36
Inventor 闫东奇何宏伟杨磊刘铁中秦加成高恩和蒋增龑杨光
Owner 中国航空工业集团公司哈尔滨空气动力研究所
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