Ludwig Prandtl

Ludwig Prandtl was a German fluid dynamicist, physicist and aerospace scientist. He was a pioneer in the development of rigorous systematic mathematical analyses which he used for underlying the science of aerodynamics, which have come to form the basis of the applied science of aeronautical engineering. In the 1920s, he developed the mathematical basis for the fundamental principles of subsonic aerodynamics in particular; and in general up to and including transonic velocities. His studies identified the boundary layer, thin-airfoils, and lifting-line theories. The Prandtl number was named after him.

4 February 1875

Born on the same birth day (4 February): Alan Shields • Gotse Delchev • Jason Kapono • Jenny Shipley • Matthew Cobb • Maximilian Wöber • Yahya Khan

Born in the same month (February 1875): Erkki Melartin • Fritz Kreisler • Jeanne Calment • Leonid Gobyato • Vladimir Filatov