To generate lift, a wing must continuously push mass (air) down. 2. The Coandă Effect
McLean introduces the concept of , which he defines as the art of reasoning correctly about fluid behavior without relying solely on computation or back-of-the-envelope math .
Experiments validate physics and reveal regimes where models fail. Core methods: understanding aerodynamics arguing from the real physics pdf
This narrative treats aerodynamics as a physical discipline grounded in conservation laws, continuum mechanics, and thermodynamics, and follows the spirit of “arguing from the real physics”: start from first principles, track assumptions, quantify approximations, and use experiments and scaling to validate models. It emphasizes physical intuition, systematic approximation, and clear connections between equations and observable flow behavior.
McLean emphasizes "Mental Fluid Dynamics" (MFD) to help engineers visualize complex flows without needing a computer. To generate lift, a wing must continuously push
Most introductory physics textbooks and aviation manuals rely on explanations of lift that are incomplete, misleading, or fundamentally incorrect. McLean argues that these myths persist because people crave a single, simple cause-and-effect explanation for a phenomenon that is inherently complex. The Equal Transit Time Myth
Aerodynamics is governed by the constant interaction of four primary forces. When an aircraft is in steady, unaccelerated flight, these forces are in equilibrium: and Thrust = Drag . Lift: The upward force generated by the wings. Experiments validate physics and reveal regimes where models
: He argues against the common myth that air must meet at the trailing edge at the same time.
