The invention relates to the field of wing body fusion aircrafts, and discloses a virtual abdominal flap, a wing body fusion aircraft and a steady blowing and variable-angle blowing method. The virtual abdominal flap comprises an air entraining system for transmitting an air source, and a pressure cavity connected with the air entraining system; and at least a part of the pressure cavity is not closed to form a jet flow seam, and a gas is exhausted from the jet flow seam according to a preset deflection angle after passing through the air entraining system and the pressure cavity. According to the scheme, the virtual abdominal flap is arranged on the abdomen of the wing body fusion layout aircraft, the effect of a traditional abdominal flap is simulated through the air wall effect formed by seam channel blowing, compared with a traditional mechanical abdominal flap, the structure is simple, the functions of steady blowing and variable-angle blowing are achieved at the same time, and the pressure in front of and behind the abdominal flap on the lower surface of the aircraft is changed; and therefore, the additional head-up moment of the aircraft is generated, and pitching moment balancing and pitching control in the take-off and landing stage of the aircraft are facilitated. In addition, the virtual abdominal flap ensures the requirements of the aircraft on structural integrity and light weight to the maximum extent.

    本发明涉及翼身融合飞机领域,公开了一种虚拟腹襟翼、翼身融合飞机、定常吹气及变角吹气的方法,包括用于传输气源的引气系统、与所述引气系统连接的压力腔;所述压力腔上至少有部分未闭合形成射流缝道,气体经过所述引气系统和所述压力腔后,从所述射流缝道按照预设偏角排出。本方案在翼身融合布局飞机的腹部设置虚拟腹襟翼,利用缝道吹气形成空气壁面效应来模拟传统腹襟翼的效果,与传统机械腹襟翼相比,结构简单,同时实现定常吹气和变角度吹气功能,改变飞机下表面腹襟翼前后的压力,从而产生对飞机附加的抬头力矩,有利于飞机起降阶段的俯仰力矩配平以及俯仰控制。而且,虚拟腹襟翼最大限度的保证了飞机对于结构的完整性和轻量的要求化。


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    Title :

    Virtual abdominal flap, wing body fusion aircraft, steady blowing method and variable-angle blowing method


    Additional title:

    虚拟腹襟翼、翼身融合飞机、定常吹气及变角吹气的方法


    Contributors:
    WANG WANBO (author) / PAN JIAXIN (author) / TANG KUN (author) / HUANG YONG (author) / WU FUZHANG (author) / SUN QIXIANG (author)

    Publication date :

    2022-02-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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