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

页码：2349 / 2357

页数：9

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