Do you like to learn about aerodynamics and the basics of the flight? This is one of the best lessons you could possibly find.

Understanding the motion of air around an object (often called a flow field) enables the calculation of forces and moments acting on the object. In many aerodynamics problems, the forces of interest are the fundamental forces of flight: lift, drag, thrust, and weight. Of these, lift and drag are aerodynamic forces, i.e. forces due to air flow over a solid body. Calculation of these quantities is often founded upon the assumption that the flow field behaves as a continuum. Continuum flow fields are characterized by properties such as flow velocity, pressure, density, and temperature, which may be functions of position and time. These properties may be directly or indirectly measured in aerodynamics experiments or calculated starting with the equations for conservation of mass, momentum, and energy in air flows. Density, flow velocity, and an additional property, viscosity, are used to classify flow fields.

AERODYNAMICS FORCES ACTING ON AN AIR FOIL Department of Defense 1957 PIN 27274 DEPICTS THE AERODYNAMIC THEORY AND PRINCIPLES OF FORCES ACTING ON AIR FOILS.

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