固定翼飞机截面绕流结构着水冲击载荷特性研究  

Study on water shock load characteristics of fixed-wingaircraft cross-sectional flow structure

作　　者：黄淼 吴彬 汪小翔 HUANG Miao;WU Bin;WANG Xiaoxiang(China Special Vehicle Research Institute,448035 Jingmen,China)

机构地区：[1]中国特种飞行器研究所,荆门448035

出　　处：《应用力学学报》2024年第6期1269-1273,共5页Chinese Journal of Applied Mechanics

基　　金：工信部民用飞机专项科研资助项目(No.MJZ-3N21-5)。

摘　　要：针对水上飞机常用的V型和陆基飞机常用的圆柱绕流结构,开展了模型着水载荷试验,对比分析了两种不同截面绕流结构的载荷特性。研究结果表明:V型绕流结构具有较好的载荷特性,在着水过程中压力峰值变化周期较长、峰值相对较小,峰值作用半周期在0.1 s左右,压力位置、速度对峰值影响明显,越靠近对称面位置,着水速度越大压力峰值越大。圆柱形绕流结构具有压力峰值大、作用周期短的特点,同等条件下对称面位置的压力峰值是V型绕流结构最大压力的8.7倍,峰值作用半周期仅在0.5 ms左右。Aiming at the V-shaped and cylindrical winding structures commonly used in land-based aircraft,the model water load test was carried out,and the load characteristics of two different cross-sectional flow winding structures were compared and analyzed.The results show that the V-shaped flow around structure has good load characteristics,the pressure peak change period is long and the peak value is relatively small during the watering process,the half cycle of the peak is all in 0.1 s,the pressure position and velocity have obvious effects on the peak,which is close to the symmetrical plane position,and the larger the landing speed,the greater the pressure peak.The cylindrical flow around structure has the characteristics of large pressure peak and short action cycle,and the pressure peak at the symmetrical surface position under the same conditions is 8.7 times the maximum pressure of the V-shaped flow structure,and the half cycle is only about 0.5 ms.

关 键 词：固定翼飞机 截面绕流结构 着水 冲击载荷 试验研究 

分 类 号：V271.5[航空宇航科学与技术—飞行器设计]