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- W3035005387 abstract "Helicopters operations on frigates imply complex maneuvers for pilots. During the aircraft approach to the frigate, the helicopter rotor is immersed in a changing aerodynamic flow, with high speed and turbulence intensity gradients. This occurs as a consequence of the non-aerodynamic surfaces that compose the frigates and generate detached flow on their decks. Typically, the helicopter operations on frigates are located at the stern. That is, after the superstructure of the ship, and more specifically just behind the hangar where the helicopter can be hosted. Using a simplified frigate shape model, tests have been carried out in the National Institute of Aerospace Technology (INTA) low-speed wind tunnel (T1) by modifying the hangar geometry in a bubble-shaped way to optimize it aerodynamically and improve the flow over the frigate aft-deck. Roof and side walls have been modified by linear (A), circular (C) and elliptical (E) geometries. Particle Image Velocimetry (PIV) technique has been used for obtaining the flow velocity field above and behind the hangars proposed to evaluate the effectiveness of each geometry modification proposed. Finally, a numerical comparison with the PIV results and parameters such as the storage capacity reduction of the hangar due to its geometry change has been carried out." @default.
- W3035005387 created "2020-06-19" @default.
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- W3035005387 date "2020-06-08" @default.
- W3035005387 modified "2023-09-25" @default.
- W3035005387 title "Aerodynamic optimization over helicopter flight-deck of a simplified frigate model using bubble-shaped hangars" @default.
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- W3035005387 doi "https://doi.org/10.2514/6.2020-2960" @default.
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