The Prandtl-Glauert compressibility correction factor, often denoted as “B,” is a correction factor used in the field of flight mechanics and aerodynamics to account for the effects of compressibility on the lift and drag coefficients of an airfoil or wing. This correction factor is primarily applicable to speeds near and just below the speed of sound (transonic speeds).
- B: Prandtl-Glauert compressibility correction factor
- M: Mach number of the aircraft
- Λ (lambda): Sweep angle of the wing or airfoil (measured relative to the direction of the oncoming airflow)