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How does a thickening boundary layer create form drag?

Profile drag is the term for skin friction and form drag on a 2D body. We do not talk about profile drag on 3D bodies. 3D bodies still have skin friction and form drag. In this picture, the thickness ...
Rob McDonald's user avatar
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2 votes

In a straight and level flight if thrust is equal to drag how is aircraft moving forward?

Drag is produced by moving through the air- more speed means more drag. Thrust is the motive force that pushes the plane through the air- more thrust means more push. At cruise, push equals drag and ...
niels nielsen's user avatar
0 votes

wave drag: Lift coefficient in Korn's Equation

Korn never wrote the Korn equation. Korn made the observation that the critical Mach number of airfoils displayed a linear relationship with t/c and design lift coefficient. Others introduced the ...
Rob McDonald's user avatar
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6 votes

In a straight and level flight if thrust is equal to drag how is aircraft moving forward?

Per Newton's first law, A body remains at rest, or in motion at a constant speed in a straight line, except insofar as it is acted upon by a force. You need excess thrust to get up to speed. But ...
Sanchises's user avatar
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