Wave-Front Measurements of a Supersonic Boundary Layer Using Laser Induced Breakdown

被引：9
|
作者：
Rennie, R. Mark [1 ]
Minh Nguyen [1 ]
Gordeyev, Stanislav [1 ]
Jumper, Eric J. [1 ]
Cain, Alan B. [2 ]
Hayden, Timothy E. [3 ]
机构：
[1] Univ Notre Dame, Dept Mech & Aerosp Engn, Hessert Lab Aerosp Res, Notre Dame, IN 46545 USA
[2] Innovat Technol Applicat, Chesterfield, MO 63006 USA
[3] US Air Force Acad, Dept Aeronaut, Colorado Springs, CO 80840 USA
来源：
AIAA JOURNAL | 2017年 / 55卷 / 07期
关键词：
COMPRESSIBLE SHEAR-LAYER; OPTIC CORRECTION; AIR;
D O I：
10.2514/1.J055611
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The aero-optical effect of a flat-plate adiabatic boundary layer has been measured using the light generated by a laser-induced breakdown spark. The measurements were performed in a blowdown wind tunnel at freestream Mach numbers of 3 and 4.38. The tests showed that the aero-optical effect of boundary layers with rms optical path difference as low as 0.05m could be accurately measured using the laser-induced breakdown spark, including their deflection-angle spatial spectra. The results demonstrate that, using the laser-induced breakdown spark as a source of illumination, it is possible to make accurate measurements of low-amplitude aero-optical effects in a manner that is self-contained, nonintrusive, and suitable for a flight-test environment.
引用
收藏
页码：2349 / 2357
页数：9
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