Kutta-Joukowski theorem

Etymology
Named after Martin Wilhelm Kutta and Nikolai Zhukovsky (Joukowski), who developed its key ideas in the early 20th century.

Proper noun

 * 1)  A fundamental theorem used to calculate the lift of an airfoil and any two-dimensional bodies including circular cylinders translating in a uniform fluid at a constant speed large enough so that the flow seen in the body-fixed frame is steady and unseparated.