Superstructure Flow Distortion Corrections for Wind Speed and Direction Measurements Made from Tarawa Class (LHA1-LHA5) Ships.
NAVAL RESEARCH LAB WASHINGTON DC
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The available literature describing the errors in wind measurements produced by the flow distribution around ships, masts, and towers is briefly reviewed. It is demonstrated that the wind speed and direction measurments made from the standard anemometer locations onboard a Tarawa class LHA ship can be seriously distorted by the wind blockage produced by the ships superstructure, mast, and antennas. Even though the wind measurements are made near the top of the forwardmost mast, the wind speed error is found to be as large as 50 and the wind direction error in excess of 10 deg. A correction scheme for determining the true wind speed and direction is presented. Author
- Marine Engineering