Robuta

https://dspace-erf.nlr.nl/items/068d4c74-df11-4aa9-ab2d-d79b91e6fe0a Experimental Investigation Of The Vortex Ring State For Side-By-Side Tandem Propellers The present paper describes an experimental wind tunnel campaign aimed at investigating the aerodynamic interactions between two side-by-side eVTOL propeller... vortex ring stateof theside byexperimentalinvestigation