Passive flow control over the ski-jump of aircraft carriers
2016; Elsevier BV; Volume: 114; Linguagem: Inglês
10.1016/j.oceaneng.2016.01.019
ISSN1873-5258
AutoresRafael Bardera-Mora, M.A. Barcala-Montejano, Ángel Antonio Rodríguez-Sevillano, Joaquín de Nova-Trigueros,
Tópico(s)Fluid Dynamics and Turbulent Flows
ResumoAircraft carriers are the strategic weapon to project airborne power for military operations overseas. The take-off manoeuvre is one of the most critical operations of aircraft at sea because extra lift and velocity are required due to the short runway distance available, partially mitigated by the use of ski-jumps. The ski-jumps of aircraft carriers give rise to adverse aerodynamic effects as a result of strong airflow disturbances over the flight deck. The disturbances are characterised by an unsteady flow with a recirculation bubble and a very turbulent flow in the vicinity of the ship’s bow. Passive flow control is used as a powerful tool to solve the problem. In this work, wind tunnel experimental research was performed to test different passive flow control devices by means of Particle Image Velocimetry measurements. A comparative study was carried out to analyse the effectiveness of different configurations. Relevant results were obtained for the Columnar Vortex Generator configurations, which can be applied in the near future to the full-scale problem, reducing the risk of accident and the pilot’s workload.
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