小展弦比飞翼布局高速标模测力天平研制  

Strain gauge balance development for force test on small aspect ratio flying wing high speed standard model

作　　者：史玉杰[1] 黄勇[1] 田正波[1] 

机构地区：[1]中国空气动力研究与发展中心,四川绵阳621000

出　　处：《实验流体力学》2015年第5期50-54,共5页Journal of Experiments in Fluid Mechanics

摘　　要：小展弦比飞翼布局的纵横向气动特性差异大,对天平测量与校准提出了较大挑战。专用天平针对其气动载荷特点和气动力试验需求,通过对常规片梁和柱梁组合的组合测量元件进行改进,提高了横向载荷的测量灵敏度,使得组合元件满足天平除轴向力外的5个分量的灵敏度测量需要。天平选用横Π型梁作为轴向力的测量梁,降低了其他分量对轴向力的干扰。在天平校准时通过施加纵向冲击振动的工程方法完成天平加载头的安全拆卸并应用于模型的拆卸。研制的天平已完成了相关风洞测力试验。There is a large difference between the longitudinal and lateral aerodynamic characteristics of a small aspect ratio flying wing aircraft, which presents a major challenge to the meas- urement and calibration of a strain gauge balance. According to the aerodynamic characteristics and to meet the aerodynamic test requirements of the aircraft, a specialized balance is designed by improving the combination element which is made up of sheet-beams and bar-beams. The sensitivities of the five components of the babance except for the axial force component are high enough for measurement, with the lateral components especially improved in the balance design. The lengthening thwart II beam is adopted as the axial force element of the balance which can reduce the interference to the axial force measurement. Longitudinal shock vibration is enforced on the load-adapter to take down it from the balance, and this is also the way to take down the test model. The balance has already passed relevant force tests in the wind tunnel.

关 键 词：小展弦比 飞翼 天平 研制 灵敏度 

分 类 号：V211.72[航空宇航科学与技术—航空宇航推进理论与工程]