Windtunnel as a Tool for Laminar Flow Research
Windtunnel as a Tool for Laminar Flow Research
- Neue Suche nach: A. Elsenaar
- Neue Suche nach: A. Elsenaar
Testing laminar airfoils or wings in the wind tunnel, entails some specific experimental problems. These problems are discussed in the paper using the (limited) experience of laminar flow tests made in the High Speed Wind Tunnel HST of NLR. Special measurement techniques are required, like infrared imaging for transition detection and fast continuous wake rake traverses, for detailed drag assessment. Premature transition due to contamination of the airfoil surface appears to be a problem. It is unlikely that the transition location in flight will be duplicated in the wind tunnel due to flow quality and Reynolds number differences. Therefore a methodology is discussed to extrapolate the wind tunnel test result to flight conditions.
Dokumentinformationen
Windtunnel as a Tool for Laminar Flow Research
1990
18 pages
Report
Keine Angabe
Englisch
Aerodynamics , Test Facilities & Equipment , Laminar flow , Transonic wind tunnels , Flow measurement , Infrared optical systems , Boundary layer transition , Airfoils , Aerodynamic stability , Wind tunnel tests , Reynolds number , Test facilities , Drag , Pressure distribution , Wakes , Foreign technology
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