Towards Density Reconstruction of Helicopter Blade Tip Vortices from High-Speed Background-Oriented Schlieren Data

J N Braukmann,C C Wolf,M Raffel,A Bauknecht

doi:10.1007/978-3-319-64519-3_34

Towards Density Reconstruction of Helicopter Blade Tip Vortices from High-Speed Background-Oriented Schlieren Data

J N Braukmann, C C Wolf + Show 2 more

https://doi.org/10.1007/978-3-319-64519-3_34

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Publication Date: Oct 31, 2017

Citations: 4

Affiliation: German Aerospace Center

#Background-Oriented Schlieren #Blade Tip Vortices + Show 8 more

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Abstract

A method for the reconstruction of 3D density distributions of blade tip vortices is presented. The reconstruction is performed using a filtered back-projection on 2D density gradient data from a high-speed LS-BOS (laser-speckle-illuminated background-oriented Schlieren) setup, captured during the STAR (smart-twisting active rotor) project. Density profiles of blade tip vortices are presented, as well as comparisons of the size and development of the vortices. In addition the comparison to a PIV (particle image velocimetry) measurement is shown.

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