%A ZHANG Haitao, YU Jianhu, LI Zhirui, LI Shaopeng, ZHAO Yan %T Measuring technology for vertical fin load of T-shaped empennage layout %0 Journal Article %D 2019 %J Acta Aeronautica et Astronautica Sinica %R 10.7527/S1000-6893.2018.22074 %P 122074-122074 %V 40 %N 3 %U {https://hkxb.buaa.edu.cn/CN/abstract/article_17110.shtml} %8 2019-03-15 %X Considering that the lower horizontal stabilizer set on the T-shaped empennage affects the load of the vertical fin, a method for measuring the vertical fin load of the T-shaped empennage in the actual flight test is proposed. By analyzing the effect of the horizontal stabilizer load on the vertical fin, an asymmetric calibration loading mode for the horizontal stabilizer is designed, and is introduced into the vertical fin load equation modeling. The equation is used to measure the vertical fin flight load of a certain type of aircraft in the type certificate flight test. The flight test results show that the measuring error of the load equation is decreased from 5.3% to 3.14%, horizontal stabilizer asymmetric bending load has severe effect on bending of the vertical fin, yaw maneuver can reach 57.6% of the bending of the vertical fin when the aircraft is highly loaded, and roll maneuver can reach 61.9% of the bending of the vertical fin when the aircraft is highly loaded.