The invention belongs to the technical field of aircraft aerodynamic design, and particularly relates to a buffeting-suppressed aircraft subsonic front part deflection rule design method. The method comprises the following steps: S1, discretizing a plurality of Mach number design points in a set subsonic Mach number interval; s2, for each Mach number design point, controlling the airplane model to reach a specified attack angle attitude in the wind tunnel flow field within a specified attack angle change range according to a set step length; s3, on the basis of a subsonic velocity bucket array characteristic wind tunnel test, obtaining buffeting intensity of the airplane in each front fly skewness state under each Mach number design point, and forming the buffeting intensity in a two-dimensional coordinate system; and S4, constructing a change curve of the front part skewness, far away from each buffeting point, of each Mach number design point along with the incidence angle. According to the method, the phenomena such as buffeting and non-instruction lateral course movement of the aircraft in the test flight can be avoided to the greatest extent, and the risk of aircraft test flight is effectively reduced.

    本申请属于飞机气动设计技术领域,特别涉及一种抖振抑制的飞机亚音速前襟偏转规律设计方法。该方法包括:步骤S1、在设定的亚音速马赫数区间内离散出多个马赫数设计点;步骤S2、对每一个马赫数设计点,按设定步长在指定迎角变化范围内控制飞机模型在风洞流场中到达指定迎角姿态;步骤S3、基于亚音速斗阵特性风洞试验,获取飞机在各马赫数设计点下各个前襟偏度状态的抖振强度,并形成在二维坐标系中;步骤S4、构建各马赫数设计点的远离各抖振点前襟偏度随迎角的变化曲线。本申请能够最大程度上避免飞机在试飞中出现抖振和非指令横航向运动等现象,有效减小飞机试飞的风险。


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    Title :

    Airplane subsonic front part deflection rule design method for buffeting suppression


    Additional title:

    一种抖振抑制的飞机亚音速前襟偏转规律设计方法


    Contributors:
    FU JIAWEI (author) / ZUO LINXUAN (author) / ZHOU JILIANG (author) / SUN YINGDAN (author) / WANG MUGUO (author) / YANG DEMIN (author) / GUO CANSHENG (author)

    Publication date :

    2023-12-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / B64C AEROPLANES , Flugzeuge / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen



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