The point on the rocket where all aerodynamic forces are assumed to act

The point at which the aerodynamic forces on a body appear to act, and at which there is no aerodynamic movement. It is similar the centre of gravity in mechanical terms.

The point on the upper surface of a wing, relative to the chord, where the lift can be said to centre.

An imaginary line along the span of an aerofoil on which all the aerodynamic forces on the aerofoil affecting lift may be assumed to act. The centre of pressure of an aerofoil is normally about one-third back from the leading edge but in certain flying attitudes and with flaps extended, it may vary greatly and may even move right off the aerofoil altogether.

A line running from wing tip to wing tip, along which all the air forces on the wing may be said to act