The invention provides a reverse thrust device flow guide blade grid blade inlet airflow angle determination method, which is based on the reality of an outer culvert flow field where a flow guide blade grid is located, comprehensively considers the influence of an outer culvert outer wall and a choke gate, and fits a blade inlet airflow angle into an included angle between an outer culvert outer wall molded line and an axis and an included angle between a choke gate molded line and an axis in a reverse thrust state. According to a first piecewise function about the relative relation between the distance from the blade to the front end of the flow guide blade grid and the axial length of the flow guide blade grid, all meanings are clear, so that the efficiency of determining the blade inlet airflow angle of the flow guide blade grid of the reverse thrust device is high, the accuracy is high through tests and simulation verification, and the requirements of rapid design and iteration can be met. In addition, the invention provides a method for determining the geometric inlet angle of the blade of the flow guide blade grid of the reverse thrust device, and the method is implemented based on the method for determining the inlet airflow angle of the blade of the flow guide blade grid of the reverse thrust device.
本申请提供一种反推力装置导流叶栅叶片入口气流角确定方法,其基于导流叶栅所在外涵流场的实际,综合考虑外涵外壁、阻流门的影响,将叶片入口气流角,拟合为外涵外壁型线与轴线的夹角、反推态时阻流门型线与轴线的夹角,关于叶片至导流叶栅前端的距离与导流叶栅的轴向长度相对关系的一次分段函数,各项含义明确,以此对反推力装置导流叶栅叶片入口气流角确定,具有较高的效率,且经试验及其仿真验证具有较高的准确性,可满足快速设计、迭代的需求。此外,提供一种反推力装置导流叶栅叶片几何入口角确定方法,其基于上述的反推力装置导流叶栅叶片入口气流角确定方法实施。
Method for determining geometric inlet angle of blade inlet airflow angle of flow guide blade grid of reverse thrust device
反推力装置导流叶栅叶片入口气流角几何入口角确定方法
2022-12-23
Patent
Electronic Resource
Chinese
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 / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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