A method and structure for optimizing a control surface installation

By adding airflow blocking components at the gaps between the wing and the control surfaces, the problem of airflow slippage in the control surface gaps was solved, the wing surface flow characteristics were maintained, the aircraft's aerodynamic performance was improved, and vibration and icing were avoided, resulting in better flight performance.

CN116305584BActive Publication Date: 2026-07-24AVIC (CHENGDU) UAS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AVIC (CHENGDU) UAS CO LTD
Filing Date
2023-03-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Airflow slippage at the gaps in the control surfaces of existing aircraft leads to uneven flow distribution on the wing surface, affecting the lift and drag characteristics of the aircraft. Furthermore, traditional sealing structures are difficult to balance the requirements of flexibility and rigidity, and are prone to vibration and fatigue losses.

Method used

An airflow barrier was added to the gap between the wing and the control surface, dividing it into two independent cavities to maintain consistent pressure on the upper and lower surfaces. Rigid materials were used to block airflow slippage and to maintain flexibility when the control surface deflects.

Benefits of technology

It effectively blocks airflow crosstalk, maintains the flow characteristics of the wing surface, delays airflow separation, increases the stall angle of attack, improves the aerodynamic performance of the aircraft, and avoids vibration and icing problems.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116305584B_ABST
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Abstract

The application discloses a rudder surface installation optimization method and structure. The structure comprises a wing and a rudder surface connected to the wing, and a gap is formed between the wing and the rudder surface. The structure further comprises an airflow barrier arranged in the gap between the wing and the rudder surface, and the airflow barrier divides the space into two cavities which are communicated with the upper and lower surfaces of the wing respectively. The rudder surface installation optimization structure adds an airflow barrier in the gap between the wing and the rudder surface, so that the airflow above and below the wing is blocked to prevent the airflow from flowing through the gap, and the airflow on the surface of the wing retains the flow characteristics of the designed airfoil.
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