The focus of the R&D project is the investigation of the influence of the deviation moments in interaction with the main moments of inertia on the movement behaviour of a ship in oblique seas. Extensive numerical investigations will be carried out for different ship forms. These results are to be verified in the laboratory. For this purpose, it is necessary to further develop and test a speed and course controller developed for smooth water navigation for sea state conditions when sailing in waves with different approach directions.
Another focus is on the development of a numerical method that makes it possible to calculate and visually display the optimal mass distribution of a laboratory model, taking into account all specified inertia parameters including the deviation moments. The aim is to significantly reduce the time needed to trim a laboratory model for sea state tests. The procedure is to be structured in such a way that, on the basis of a CAD file of the interior of a laboratory model, all the necessary devices, equipment elements and trim weights are arranged according to the optimisation algorithm developed and, after calculating the moments of inertia, the actual values are automatically compared with the target values. Continue reading “DEMO
(10/2019 – 03/22)” →

The project serves the safe and environmentally friendly operation of (semi) planing crafts. The issue of safety is determined by the sporadic occurrence of unstable behaviour: the so-called porpoising (pitching or trimming motion) and corkscrewing behaviour with rolling motions. These phenomena significantly impair the safety of people and the ship and, last but not least, pose a threat to the mission objectives also due to time delays and additional fuel consumption. Continue reading “AUTOPLAN
(10/2019 – 09/2022)” →

The aim of the R&D project is to develop technologies that enables electrically powered watercraft to operate autonomous on inland waterways. The requirements concern both real-time trajectory planning in the highly confined space of rivers, canals and locks, and the most precise possible traversal of this trajectory under influences such as flow, shoals, wind and oncoming traffic, which are particularly challenging on inland waterways. Continue reading “A-SWARM
(09/2019 – 08/2022)” →

The aim of the project is to improve the experimental prediction of the sound level spectra emitted by ships and propulsion systems. In contrast to the usual approach of deriving the sound level prediction solely from measurements in the cavitation tunnel, acoustic measurements are also to be carried out in the towing tank and included in the prediction. Continue reading “Akustik
(09/2019 – 02/2022)” →

In the project, the experimental and computational methods for predicting the characteristic values of azimuthing drive systems where further developed and improved. The focus was better consideration of the gap effects between the propeller hub and gondola as well as the shaft and end plate in the test evaluation, verification of the suitability of quasi-stationary measurements and the analysis of the scale effects on the measurement results. Continue reading “MESA
(07/2019 – 10/2021)” →

Within the scope of the project, the influence of pre-swirl ducts (PSD) on the manoeuvring behaviour of complete ships, in particular the course stability, and the interaction of the pre-swirl duct with rudder and propeller will be investigated. Continue reading “PSDMan
(07/2019 – 06/2022)” →