As explained higher than beneath "Simplified Bodily explanations of lift on an airfoil", there are two main popular explanations: a single depending on downward deflection from the flow (Newton's rules), and one based on force differences accompanied by alterations in circulation velocity (Bernoulli's principle). Its sections on theory of flight https://eduardowtohz.wikifordummies.com/8493828/details_fiction_and_smarter_home_lift