Aerodynamics is a branch of fluid mechanics that deals with the motion of air and other gaseous things, and with the forces acting on objects in motion relative to such fluids. Some examples of aerodynamic action are an airplane gliding through the air or a windmill spinning. Two of the fundamental forces of aerodynamics are lift and drag.
             Lift is what pushes things up. For instance on an airplane the front of the wing is higher than the lower portion pushing the air down. Using Newton's third law that every action has an equal and opposite reaction the air pushes the wing up.
             Drag is the resistance on solid objects moving the air. To reduce this planes have propellers to break the drag. Another common principle implied to break drag is to have a thin, or streamlined body instead of square.
             One more branch of aerodynamics is supersonics. Supersonics. Supersonics concern things that happen when the velocity of the object going through a fluid goes faster than the speed sound. This changes according the surroundings though. This is also called mach one, which is equal to the speed of sound times one. When an object reaches this speed, shock waves affect it and cause disturbances In the craft.
             The most aerodynamic shape for an aircraft Is the tear drop shape which is round and big at the end with a tail at the front, much like a tadpole. You don't see that very much because it is uneconomical.
             Those are my basics of aerodynamics.
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