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Bernoulli equations
static pressure + dynamic pressure = total pressure = constant

lift + drag
Drag acts in a direction that opposes the motion.
Lift acts perpendicular to the motion.


Lift - mechanical force, generated by the interaction and contact of a solid body with a fluid.
- generated by the difference in velocity between the object and the fluid.

Drag - aerodynamic friction, Along the solid surface, a boundary layer of low energy flow is generated and the magnitude of the skin friction depends on the state of this flow.
aerodynamic resistance to the motion of the object through the fluid.