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Propeller integration experiments in DNW and TU Delft

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If you have a question about this talk, please contact Dr Henry Burridge.

Propeller aircraft are generally considered old fashioned and dodgy. Compared to modern turbofans, propeller propulsion, however, can provide significant savings in fuel consumption and thus contribute to the very fashionable effort to reduce CO2 emission in aeronautics. It is therefore of continued interest to improve our understanding of propeller related flow phenomena, especially in the context of integrating the propellers with airframes. At the DNW the main emphasis has been developing the testing technology and understanding of the wind tunnel measurement results of powered models, in applying the appropriate corrections to the results. At the TU Delft we have attempted to look at the disturbances generated by the interaction of propellers with solid surfaces. In the interaction with walls, the thrust can generate vortices entering the propeller. Both the generation of the vortices as well as the effect of the vortices upon the propeller are subjects of quantitative experimental studies and numerical analysis. Furthermore, the effect of the position of the propeller relative to wings can also be quantified in the experimental rig of the TU Delft. The results obtained by the speaker and collaborators so far in the numerical and experimental modelling of the propeller interactions will be discussed. Furthermore an outlook will be given about the further development of the experimental capabilities that are needed to quantify propeller integration effects.

This talk is part of the Fluid Mechanics (CUED) series.

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