You are here

Feasibility Study: Helicopter Blade Tip Vortices Positions Measured in Free Flight by Means of Stereoscopic Background Oriented Schlieren Method (BOS)

F. Klinge, Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany
M. Hecklau, Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany
J. Kompenhans, Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany
U. Göhmann, Deutsches Zentrum für Luft- und Raumfahrt, Institut für Aerodynamik und Strömungstechnik, Göttingen, Germany

Abstract

A free-flight full-scale out-door test to localize blade tip vortices of a helicopter in space was performed by means of the stereoscopic Background Oriented Schlieren method (BOS) at the DLR site and research flight center in Braunschweig. The objective was a quantitative feasibility study of the BOS measurement technique for spatial vortex investigations. The results show that it is possible to detect and to measure the position of three-dimensional vortex structures of a free-flying MBB Bo 105 helicopter in space.

Date: 
Wed, 2006-06-14