Rate 1, 2 or 3 turn at a specific TAS. Where is the rate of turn. If the velocity and the angle of bank is given, where g is the gravitational acceleration. This is a simplified formula that ignores slip and returns zero for 90° of bank. In metres (where gravity is approximately 9.81 metres per second per second, and velocity is given in metres per second): Or in feet (where velocity is given in knots): References Aerial maneuvers Units of rate