“张线支撑及内天平测量系统”已在ＦＬ－８ 闭口风洞中调试、使用。该系统使用了套管天平，套管内杆是天平与模型相连，与天平相连的套管是支撑体，张线的一端与套管的前后吊点相连，张线的另一端与风洞上转盘齿圈上的张紧机构和风洞下转盘下的配重相连。该系统的角度变化范围，模型侧吊时， α＝ ±３６０°，β＝ ±６５°，模型正吊时，α＝ ±６５°，β＝ ±３６０°实验表明：张线支撑与尾撑和腹撑相比，消除了由于支杆引起的模型振动，其支架干扰变小，试验数据质量有了进一步的提高 “Line support and internal balance measuring system” has been debugged and used in FL-8 closed wind tunnel. The system uses a casing balance, the casing is connected to the balance within the balance rod and the casing connected to the balance is a support body, one end of the tension line connected to the casing before and after hanging points, the other end of the line and the wind tunnel on the turntable The tensioning mechanism on the ring gear is connected to the counterweight under the turntable under the wind tunnel. The angle range of this system is α = ± 360 ° and β = ± 65 ° when the model is side hung, and α = ± 65 ° and β = ± 360 ° when the model is hanging. Experiments show that: Compared to the abdominal brace, the model vibration due to the strut is eliminated, the stent interference becomes smaller and the quality of the experimental data is further improved