THE SOURCE OF ALL AERODYNAMIC FORCES A knowledge of four basic aerodynamics quantities (P, 𝞺,T and v ) at each point of the flow fully defines the flow field The air flow over the surface of any body in the flow creates anaerodynamic force on the body the aerodynamic forces by the airflow on the surface of an airplane,missile,.....etc stems from only two natural sources 1. pressure distribution on the surface 2. shear stress distribution on the surface pressure exerted by the gas on the solid surface of the object always acts normal to the surface the net unbalance of the varying pressure distribution over the surface of airplane creates an aerodynamic force which is known as lift the s...
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