Von Kármán

Space Command defines its area of responsibility as beginning at 62 miles above sea level, or about 327,000 feet — otherwise known as the Karman Line, named after Theodore von Karman, a Hungarian American physicist.

Birnir says Prandtl’s and von Kármán’s so-called log law can be derived from the attached eddy hypothesis, but one key piece missing from Townsend’s theory was the process by which this energy transfer and transformation occurs.

Prandtl and von Kármán also discovered that the inertial layer’s mean velocity was a logarithmic function of the distance from the boundary.

Back then, two researchers ignited interest in boundary layer turbulence: German physicist Ludwig Prandtl, who has been called “the father of modern aerodynamics,” and Theodore von Kármán, a Hungarian-American engineer known as “the father of supersonic flight,” conducted wind tunnel experiments.

The rover has now driven just over 1,000 meters since it arrived three years ago on the moon’s far side, in Von Kármán crater, as part of the Chang’e-4 mission.