𝐏𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐃𝐢𝐬𝐭𝐫𝐢𝐛𝐮𝐭𝐢𝐨𝐧 & 𝐂𝐞𝐧𝐭𝐞𝐫 𝐨𝐟 𝐏𝐫𝐞𝐬𝐬𝐮𝐫𝐞

🛫Air flows along the surface of a wing at different angles of attack (AOA), there are regions along the surface where the pressure is negative, or less than atmospheric, and regions where the pressure is positive, or greater than atmospheric

🛫negative pressure on the upper surface creates a relatively larger force on the wing than is caused by the positive pressure resulting from the air striking the lower wing surface

🛫Pictures show the pressure distribution along an airfoil at three different angles of attack

🛫average of the pressure variation for any given AOA is referred to as the center of pressure (CP) or in other words, the center of pressure is the point where the total sum of a pressure field acts on a body

🛫️Aerodynamic force acts through this CP

🛫️At high angles of attack, the CP moves forward, while at low angles of attack the CP moves aft

🛫In the design of wing structures, this CP travel is very important, since it affects the position of the air loads imposed on the wing structure in both low and high AOA conditions

🛫airplane’s aerodynamic balance and controllability are governed by changes in the CP

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