Boundary-layer transition detection studies were carried out in the 0.3 Meter Transonic Cryogenic Tunnel on a supercritical airfoil, using an infrared imaging system. The purpose of the experiments was to determine the extent of the temperature range in which commercially available IR systems can detect transition in cryogenic environment. The experiment was designed to take advantage of a combination of factors including the wind tunnel operation mode, the model construction materials and the IR system image processing options. During the initial phases of the study, the IR based findings were confirmed by measurements done with a micro-thin hot-film system. Ultimately, free and forced transition could be detected down to 170 K.
Transition detection studies in the cryogenic environment
AIAA Applied Aerodynamics Conference ; 1990 ; Portland, OR, United States
01.01.1990
Aufsatz (Konferenz)
Keine Angabe
Englisch
Liquid-level detection in a cryogenic environment
British Library Conference Proceedings | 1999
|Boundary-Layer Transition Detection with Infrared Imaging Emphasizing Cryogenic Applications
Online Contents | 1994
|