<title>Optical diagnostic instrumentation for the aero-optic evaluation center</title>

This paper describes recent aero-optical measurements in the LENS facility, to evaluate the turbulent flow field characteristics of model configurations in hypervelocity airflow. The AOEC instrumentation suited which utilizes visible and infrared light sources, a wide-band optical bus and refractive and radiative sensors is described. Validation studies with simple optical aperture configurations in high enthalpy flow are discussed. The aero-optical instrumentation used in these studies are described.