The general objective of the research project I’m working on is to explore the possibilities of advanced dynamic propulsion control for marine applications. This research is part of a cohesion project between the Maritime and Transportation Technology department and the Delft Center for Systems and Control department.
In order to be able to test such propulsion control strategies, I’m currently working on the design of a pitch adjusting mechanism for a model scale controllable pitch propeller (CPP). The model scale propeller will be compatible with the open water test setup of the 3mE towing tank.
In contradiction to most other mechanisms, the electric pitch actuation motor will be placed inside the hub itself. The benefit of this principle is that the propeller hydrodynamic forces can be measured directly without the pitch actuating forces affecting the measurement. Besides that, the electric motor should provide the possibility for relatively precise and especially fast pitch adjustments.
Quasi static pitch adjustments have already been used for decades to provide better propulsive performance and manoeuverability over a wider range of operating conditions. However, the ability to do fast pitch adjustments should allow load regulation at the frequency of wave encounter. Which, on its term might result in reduced (cavitation) noise, vibrations, engine loading and improved propulsion system efficiency.
Groetjes,
Daan
Daan Schuttevaer
Junior Researcher, TU Delft