flight theory

Flight theory explains how airplanes stay in the air through the interaction of their wings with the air. Wings are shaped to create higher pressure below and lower pressure above, generating lift—an upward force counteracting gravity. As the plane moves forward, air flows faster over the curved upper surface, reducing pressure there (according to Bernoulli’s principle), while pressure remains higher underneath. This difference produces lift. Additionally, the plane’s engines provide the thrust needed for forward motion, and control surfaces like ailerons and rudders help steer and stabilize the aircraft during flight.