Explore: Momentum Theory

In fluid dynamics, momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller

Regge theory (/ˈrɛdʒeɪ/ REJ-ay, Italian: [ˈrɛddʒe]) is the study of the analytic properties of scattering as a function of angular momentum, where the

Blade element momentum theory is a theory that combines both blade element theory and momentum theory. It is used to calculate the local forces on a propeller

Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical

will have a very high disk loading on its propellers. The momentum theory or disk actuator theory describes a mathematical model of an ideal actuator disk

rotors not only have losses but must also obey angular momentum and the blade element momentum theory which limits their efficiency below Betz limit. Modern

element momentum theory. However the most common application multiplies induced velocity term by F in the momentum equations. As in the momentum equation

In Newtonian mechanics, momentum (pl.: momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and

on the rotor disk. Because of this the blade element theory is often combined with momentum theory to provide additional relationships necessary to describe

relativistic quantum mechanics or quantum field theory. The existence of electron spin angular momentum is inferred from experiments, such as the Stern–Gerlach