The invention relates to the technical field of aero-engine system design, in particular to an aircraft lift augmentation and noise reduction structure which comprises a main pipeline, branch pipelines and valves. One end of the main pipeline is communicated with an engine outer duct, the other end of the main pipeline is communicated with the branch pipeline, the branch pipeline is arranged at the bottom of a wing, and a plurality of spraying holes are formed in the branch pipeline and face downwards; the valve is mounted on the main pipeline; the valve has two states, in the first state, the valve is opened, airflow led out of the outer duct of the engine is sprayed out downwards from the wings through the branch pipelines, part of thrust is converted into lift force, and the skating distance and the climbing distance of the engine are directly shortened; in the second state, the valve is closed, the engine outer duct airflow flows normally, and the aircraft runs normally. The maximum lift coefficient is increased, the stall characteristic is improved, the lift-drag ratio is increased, the system structure is remarkably simplified, and the occupied space and the installation complexity are reduced. The structure is simple, and the maintenance convenience and economical efficiency are improved.
本公开涉及航空发动机系统设计技术领域,尤其是提供一种飞机增升降噪结构,其中,包括主管路、支管路和阀门;主管路的一端与发动机外涵道连通,主管路的另一端与支管路连通,支管路设置在机翼的底部,支管路上开设有若干喷孔,喷孔朝下;阀门安装在主管路上;阀门具有两种状态,第一状态,阀门开启,从发动机外涵道引出的气流会通过支管路从机翼处向下喷出,将部分推力转化为升力,直接缩短发动机的滑跑距离和攀升距离;第二状态,阀门关闭,发动机外涵道气流正常流动、飞机正常行驶。本公开提高了最大升力系数,改善了失速特性,提高了升阻比,显著简化了系统结构,减少了占用空间和安装复杂性。结构简单,提高了维护便捷性和经济性。
Aircraft lift augmentation and noise reduction structure
一种飞机增升降噪结构
2025-03-25
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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