Ludwig Prandtl, director of the aerodynamic research centre at Goettingen, Germany 1930s.

---

Size: 3280px × 4961px
Photo credit: © mauritius images / United Archives / Hansmann / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1930s, aeronautics, air, analysis, energetic, energies, energy, engineering, examine, examining, execution, exploratory, explore, exploring, focus, force, germany, investigating, investigation, moxie, physicist, physicists, power, research, researching, searches, stream, strength, sway, technic, technical, technique, techniques, technological, technology, turbine, turbines