TUTCRIS - Tampereen teknillinen yliopisto


Hydraulic Damper Concept for Thruster Ice Impact Load Reduction



OtsikkoASME/BATH 2017 Symposium on Fluid Power and Motion Control
JulkaisupaikkaSarasota, FL, USA
ISBN (elektroninen)978-0-7918-5833-2
DOI - pysyväislinkit
TilaJulkaistu - 19 lokakuuta 2017
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaASME/BATH Symposium on Fluid Power and Motion Control - , Iso-Britannia
Kesto: 1 tammikuuta 1900 → …


ConferenceASME/BATH Symposium on Fluid Power and Motion Control
Ajanjakso1/01/00 → …


Steerable thrusters are used to maneuver a vessel in open sea environment. The harsh environment of arctic seas introduces certain challenges with propellers hitting ice and decreasing lifetime of the system, as the loads generated by ice impacts are significantly higher than nominal loads. Damping of an ice impact load is a difficult task since the impacts have high torsional loads and they occur only in a fraction of the lifetime of the system. Commercial dampers are hard to find since they do not generally have the capacity for damping such high loads. The proposed active hydraulic damper reduces ice impact loads by accelerating and decelerating the shaft line. The lack of space and commercial components narrow down the possibilities but simulation results with the system show some positive effects in typical ice impact scenario. The system also recuperates most of the used energy and stores it to accumulator.


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