Contribution of Swirl Recovery to the Induced Drag of a Propeller-Wing System – A Parametric Study

With the rise of distributed propeller concepts, there is an increased interest in quantifying the interaction between propeller slipstream and wing. It is known from literature that the local upwash induced by the propeller swirl can lead to a reduction of the wing-induced drag, a phenomenon often referred to as swirl recovery. However, at the...

Experimental Investigation of the Aerodynamic Performance of a Propeller at Positive and Negative Thrust and Power

The use of electric motors enables a more flexible operation of propellers compared to conventional combustion engines. One possible benefit is the easier operation at negative thrust, which could be beneficial for energy recovery, control purposes, and lower noise through steeper descents. By changing the pitch of the propellers and actively...

Aerodynamic Performance of Wingtip-Mounted Propellers in Tractor and Pusher Configuration

Wingtip-mounted propellers are a promising solution for advanced propulsion integration on future (hybrid-)electric aircraft. Previous work has confirmed the favorable aerodynamic interactions between the propeller and the wing that occur for wingtip-mounted propellers in both tractor and pusher configuration. However, a direct comparison of the...

A Collaborative Approach to Teaching Software Architecture

Teaching software architecture is hard. The topic is abstract and is best understood by experiencing it, which requires proper scale to fully grasp its complexity. Furthermore, students need to practice both technical and social skills to become good software architects. To overcome these teaching challenges, we developed the Collaborative...

Risk Assessment and Mitigating Measures Regarding Pile Installation at EBS Biohub Jetty

During the design phase of the reconstruction of the existing mooring facility “EBS Biohub” at the port of Rotterdam, the Netherlands, a high risk profile was recognized in the proximity of four new dolphins next to the existing jetty. The risk originated from the greater installation depth of the dolphins related to the limited foundation depth...