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What is the purpose of the vortex generators located right in front of the Boeing 737's windshield?
Basically, the angle between the fuselage and windshield creates a separation bubble, which causes unsteady pressure fluctuations on the window, leading to noise. The addition of the VGs reduces the size of this separation bubble and turbulent boundary layer, thereby reducing noise
Vortex generators are used to create laminar airflow. Could be there for drag issues or possibly to reduce wind noise in the cockpit.

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