A Comparative Assessment of the NATO-GD and SFS2 Ship Airwakes and their Influence upon Helicopter Aerodynamic Loading

Fernandez, Nicholas ORCID: 0000-0002-8022-0788, Watson, Neale ORCID: 0000-0003-0316-8266, Owen, Ieuan ORCID: 0000-0001-5642-736X and White, Mark ORCID: 0000-0002-8611-9525 (2022) A Comparative Assessment of the NATO-GD and SFS2 Ship Airwakes and their Influence upon Helicopter Aerodynamic Loading. In: Vertical Flight Society 78th Annual Forum & Technology Display, 2022-5-10 - 2022-5-12, Fort Worth Texas.

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Abstract

<jats:p> The purpose of this study was to assess and compare the airwakes of two generic ship models, the NATO-GD and the SFS2, and their impact upon helicopter aerodynamic loading in operations over a ship's deck. Airwakes were computed using Delayed Detached Eddy Simulation, a time accurate CFD approach, for each ship model in a headwind and a Green 30 wind. The CFD airwakes were then integrated with a helicopter flight dynamics model, representative of an SH-60B Seahawk. The helicopter model was held stationary at a number of points along a lateral traverse profile over the flight deck of each ship, and the unsteady aerodynamic loads on the fixed-position helicopter were recorded and compared for the two ships. It was seen that the NATO-GD airwake created higher levels of turbulence and greater unsteady loads on the helicopter model than did the SFS2 airwake, implying greater workload for a pilot. </jats:p>

Item Type:	Conference or Workshop Item (Unspecified)
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	06 May 2022 07:12
Last Modified:	15 Mar 2024 05:40
DOI:	10.4050/f-0078-2022-17584
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3154344