24/7 Green Light for Heli-Ops

A novel method to predict the impact of ship superstructure design on helicopter operations through aerodynamic analysis in the early design phase

Master thesis (2021)

Authors

M. Eijkman Aerospace Engineering

Contributors

A.H. van Zuijlen Aerodynamics - Aerospace Engineering (mentor)

Joost den Haan Defensie Materieel Organisatie (graduation committee member)

Miranti Steijger Defensie Materieel Organisatie (graduation committee member)

Faculty

Aerospace Engineering, Aerospace Engineering

Ship design Predictive tool Prediction tool Topside Ship-helicopter operations Ship-helicopter interface Ship helicopter operational limits Superstructure aerodynamics Superstructure Amphibious transport ship Navy ship

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Published Date

22-01-2021

Language

English

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Faculty

Aerospace Engineering

Abstract

By 2030, a new amphibious transport ship is to be available for the Dutch Royal Navy. In light of the foreseen rise in airborne operations from the ship, more insight is desired into the impact of ship design choices on helicopter operational availability. There is need for a predictive tool, which can be used in the early design phase of the ship. This thesis presents a novel method for the prediction of ship helicopter operational limits (SHOLs) of conceptual ship designs. The tool predicts a SHOL diagram on basis of local mean flow velocities in the ship domain, obtained with a RANS CFD method. The tool consists in the basis of simplified relations, which are calibrated by means of a correlation to existing limits established during sea-trials. A validation of the predictive tool shows the ability to predict up to 85% of the SHOLs of an existing Dutch navy ship.

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