Driving flow control system and method of ship tail flight deck flow field

Abstract

The invention discloses a driving flow control method of a ship tail flight deck flow field. The driving flow control method of the ship tail flight deck flow field is characterized in that the wind speed and the wind angle of a ship are detected by a wind speed and direction sensor; when a ship-based helicopter takes off or lands, a flow control actuating element is driven by a control unit to generate a control airflow according to the detected wind speed and wind angle, a flow state of a main flow is changed, the ranged of a vortex region is reduced, a high upwash airflow or a downwash airflow is restrained to form, a rolling moment and a yawing moment of the ship-based helicopter during ship landing are weakened, and a flow field structure above a ship tail flight deck is improved. The driving flow control method of the ship tail flight deck flow field is applied to ship types such as a marine surveillance ship with a hangar and a destroyer, a complex flow field above a deck can be controlled, and uniformity of the flow field is improved.

Description

technical field [0001] The invention belongs to the technical field of aerodynamics, and relates to a method for improving the flow field of a flight deck at the stern of a ship, in particular to an active flow control system and a method for the flow field of the flight deck at the stern of a ship. Background technique [0002] The shipborne helicopter will be affected by complex sea conditions and high-speed navigation of the ship on the aft flight deck, and the airflow will form a complex flow structure on the aft flight deck of the ship, including the severe low-pressure separation area and the ship's sides on both sides of the deck. Upwash, downwash, etc. These complex flow structures have caused great difficulty in maneuvering the helicopter to land, and may even cause a crash. Due to the instability of the flow field on the flight deck at the tail of the ship, landing a shipborne helicopter has become one of the most difficult flying techniques to master. Even the mo...

AI Technical Summary

Problems solved by technology

The study adopts the method of adding curved deflectors on the top of the hangar for control, and a good improvement effect has been achieved under the design condition of 0° wind direction, but for the more common non-design condition of strong wind direction when the ship is sailing, This method of passive flow control cannot achieve a good control effect

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