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An Experimental Helicopter Wind Envelope for Ship Operations

Authors: R. Bardera Mora

Abstract:

Launch and recovery helicopter wind envelope for a ship type was determined as the first step to the helicopter qualification program. Flight deck velocities data were obtained by means of a two components laser Doppler anemometer testing a 1/50th model in the wind tunnel stream. Full-scale flight deck measurements were obtained on board the ship using a sonic anemometer. Wind tunnel and full-scale measurements were compared, showing good agreement and finally, a preliminary launch and recovery helicopter wind envelope for this specific ship was built.

Keywords: Flight deck flow, relative wind, ship airwake, wind envelope

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1070419

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References:


[1] Geyer, W. P., Long, K. & Carico, D. "Helicopter/Ship Qualification". Part 2: American Clearance Process. RTO AG-300 Vol. 22/SCI-038. RTO/NATO 2003. ISBN 92-837-1093-2.
[2] Fang, R. & Booij, P. J. A. "Helicopter-Ship Qualification Testing. The Dutch Clearance Process". National Aerospace Laboratory NLR. Report no.: NLR-TP-2006-024.
[3] Greenwell, D. I. & Barrett, R. V., "Inclined Screens for Control of Ship Air Wakes", AIAA 2006-3502, 3rd AIAA Flow Control Conference 5 - 8 June 2006, San Francisco, California.
[4] Erm, L. P., "A Preliminary Study of the Airwake Model Used in an Existing SH-60B/FFG-7 Helicopter/Ship Simulation Program". DSTOTR- 0015. Aeronautical and Maritime Research Laboratory. Australia 1994.
[5] Platt, J. R. "Wind Detection in a Microcosm: Ship/Aircraft Environment Sensors". IEEE AES Systems Magazine, February 1998.
[6] Johns, M. K., "Flow Visualization of the Airwake Around a Model of a DD-963 Class destroyer in a Simulated Atmospheric Boundary Layer", MS Thesis, Naval Postgraduate School, Monterey, CA, 1988.
[7] Rhoades, M. M., "A Study of the Airwake Aerodynamics Over the Flight Deck of an AOR Model Ship", MS Thesis, Naval Postgraduate School, CA, 1990.
[8] Zan, S. J. "Surface Flow Topology for a Simple Frigate Shape", Canadian Aeronautics and Space Journal, Vol. 47, No. 1. 2001.
[9] Shafer, D. M., Ghee, T. A. "Active and Passive Flow Control over the Flight Deck of Small Naval Vessels". AIAA 2005-5265. 35th AIAA Fluid Dynamics Conference and Exhibit 6-9 June 2005, Toronto, Ontario, Canada.
[10] Lumsden, R. B. "Ship Air-wake Measurement, Prediction, Modelling and Mitigation" DSTL/TR06951. April, 2003. Defence Science and Technology Laboratory UK.
[11] Simiu, E. & Scanlan, R. H. "Wind Effects on Structures. Fundamentals and Applications to Design". Third Edition. John Wiley & Sons, Inc. 1977.
[12] White, F. "Fluid Mechanics". Fourth Edition. McGraw-Hill Companies, Inc. 2002.
[13] Cengel, Y. & Cimbala, J. M., "Fluid Mechanics: Fundamentals and Applications". McGraw-Hill, 2006.
[14] Flay R. G. J., "Wind Tunnel Tests on a 1/16th-Scale Laser Model". University of Southampton. Department of Ship Science. Faculty of Engineering and Applied Science. June 1992.
[15] Dyrbye, C. & Hansen, S. O. "Wind Effects on Structures", John Wiley & Sons, Inc. New York, 1997.
[16] Argyriadis, K. "Recommendations for design of offshore wind turbines External Conditions, state of the art". Germanischer Lloyd WindEnergie GmbH. 2003.
[17] Eurocode 1: "Actions on Structures ÔÇö General Actions ÔÇö Part 1-4: Wind Actions" CEN TC 250. Date: 2004-01. prEN 1991-1-4.
[18] Meyers, J. F., "Generation of particles and seeding". NASA Langley Research Center, USA. Optical Velocity Measurements. Selected Special Topics from previous VKI Lecture series. Von Karman Institute for Fluid Dynamics. Belgium. 1994.
[19] METEK USA-1 User Manual. 2005 Metek GmbH-Germany.
[20] Natops Flight Manual Navy Model SH-60B Aircraft. A1-H60BB-NFM- 000. May, 2000. NATEC ELECTRONIC MANUAL.