How is separation point of aerofoil related to the form drag? - Answers

As we know the dynamic pressure over the wing is already weakened by the Skin friction drag, a further decrease in dynamic pressure ( e.g. due to adverse pressure gradient ) will cause the dynamic pressure to be lose further and a rise in static pressure. The loss of dynamic pressure will result in turbulent airflow over the wing to be increased and therefore the separation point to move forward. This will enhance the pressure difference between leading and trailing edge and therefore a more increase in Form Drag. So , further ahead the separation point towards leading edge, greater the Form drag.By , Karun :-)At your service ,have any doubts , let know at ,[email protected]