空气动力学学报2019，Vol.37Issue(1)：160-167,8.DOI:10.7638/kqdlxxb-2018.0240
红外热像边界层转捩探测的飞行试验应用研究
Flight test applications of boundary layer transition detection method using IR technique
王猛 1钟海 2衷洪杰 1王红州 2李玉军1
作者信息
- 1. 中国航空工业空气动力研究院 高速高雷诺数航空科技重点实验室,辽宁 沈阳 110034
- 2. 中国飞行试验研究院 中航工业飞行仿真航空科技重点实验室,陕西 西安 710089
- 折叠
摘要
Abstract
The obj ective of this paper is to develop a boundary layer transition detect technique based on IR technique for laminar wing glove flight test.The main factors of flight environment affecting the technique were analyzed,including optical path,wing skin surface processing method,and heating etc.,and then the technique solutions for these influence factors were proposed.A flight test was designed to validate the IR transition detection method,and a classic civil aircraft was used as the test platform.The flight altitude was from 5 km to 7 km,and the flight Mach number was from 0.5 to 0.65.To analyze the effects of wing heating system and solar radiation on IR map,IR images acquisitions were carried out under conditions that the wing heating system was pulse-on and pulse-off.Furthermore,a shadow on the measurement region was built to utilize the azimuth between the airplane and sun.Several flights were carried out to show the effects of the leading edge pollutants on laminar boundary layer.A transition position determination method based on statistical analysis was proposed to avoid misj udgment of the transition position from turbulent wedges induced by leading edge pollutants.Standard circle roughness elements were used to validate IR measurement results.The test results show that the SNR can be increased significantly by wing skin surface heating.Three sets of wing boundary layer transition position under flight conditions are provided,and the Reynolds number is larger than 1 3 million.Compared with fixed transition,the error of transition position measured from IR image is less than 0.5% chord length.The transition detection method proposed in this paper is appropriate for the laminar wing glove flight test.关键词
飞行试验/翼套/边界层/红外热像/转捩探测Key words
flight test/wing glove/boundary layer/infrared thermography/transition detec-tion分类
航空航天引用本文复制引用
王猛,钟海,衷洪杰,王红州,李玉军..红外热像边界层转捩探测的飞行试验应用研究[J].空气动力学学报,2019,37(1):160-167,8.
