Ludwig Prandtl
1875 – 1953
Father of modern aerodynamics; boundary-layer theory is his.
Prandtl founded modern aerodynamics at Göttingen in the early 20th century with his boundary-layer theory, which finally explained drag and made aircraft design a science rather than trial and error. His students carried the field through the century.
Lift, drag, and boundary-layer reasoning in the aerospace calculators here descend from his work. He is, by common consent, the father of the discipline that built the industry Huntsville lives on.
Portrait: a stylized blueprint-line rendering, not a photograph.
Contributions in the toolbox
- 1903
Founds modern compressible aerodynamics, making stagnation properties practical design quantities.
→ Stagnation Temperature (Compressible Flow) - 1904
Göttingen program makes supersonic flow an engineering science.
→ Oblique Shock (θ-β-M) - 1904
Force coefficients normalized by q — modern aerodynamic bookkeeping (circa).
→ Dynamic Pressure (q) - 1904
Boundary-layer theory explains why Re governs.
→ Reynolds Number - 1904
Boundary layer explains where drag comes from.
→ Drag Force - 1918
Lifting-line theory — finite wings computed.
→ Lift Force - 1918
Lifting-line theory derives induced drag from trailing vortices.
→ Oswald-Efficiency Induced Drag