They are (17.2) F drag ⊥ = 1 … Streamlining reduces this pressure difference. Form drag known also as pressure drag arises because of the shape and size of the object. How do you Reduce Pressure Drag? Pressure drag is equal to the rate of change of air particles’ linear momentum normal to the local surface in a local surface's co-moving inertial frame minus pressure forces.

This type of drag force is also an interesting consequence the Bernoulli’s effect. The pressure drag is proportional to the difference between the pressures acting on the front and back of the immersed body, and the frontal area. Drag, therefore, sets practical limits on the speed of an aircraft. Form drag known also as pressure drag arises because of the shape and size of the object. The pressure drag is proportional to the difference between the pressures acting on the front and back of the immersed body, and the frontal area. This type of drag force is also an interesting consequence the Bernoulli’s effect.

The air pressure against the leading side of an object is higher than the pressure in the randomly churning eddies of the wake on the other side of it.

Form Drag – Pressure Drag. According to Bernoulli’s principle, faster moving air exerts less pressure.