Chapter 3 flight mechanics
Aerofoils convert airflow into lift, drag, and pitching moment. Angle of attack, camber, thickness, and Reynolds number control the result.
Flight mechanics visual
This page combines original engineering notes, formulas, navigation, backlinks, and canvas animation for aircraft and spacecraft flight mechanics.
Aerofoils convert airflow into lift, drag, and pitching moment. Angle of attack, camber, thickness, and Reynolds number control the result.
Aerofoil behavior is summarized with coefficients so different sizes and speeds can be compared. Lift grows with angle of attack until separation and stall reduce performance. Pitching moment matters because an aircraft must trim, not only lift.
The useful design question is not just how much lift is produced. It is how much drag and pitching moment come with that lift, how gently stall begins, and whether the section behaves well across the expected Reynolds and Mach range.
Engineers inspect CL-alpha slope, CD polar, maximum CL, moment coefficient, leading-edge behavior, laminar or turbulent transition, and flap or high-lift system effects.
A high-lift aerofoil is not automatically the best aerofoil. Cruise drag, stall quality, structure, manufacturability, and trim all matter.
Aircraft flight mechanics and rocket flight share the same foundation: force balance, moments, energy, mass properties, stability, compressibility, and trajectory control. The rocket pages use these principles during max-Q, staging, re-entry, landing, and orbital insertion.