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The yaw rate or yaw velocity of a car, aircraft, projectile or other rigid body is the angular velocity of this rotation, or rate of change of the heading angle when the aircraft is horizontal. It is commonly measured in degrees per second or radians per second.
For example, a geostationary satellite completes one orbit per day above the equator (360 degrees per 24 hours) a has angular velocity magnitude (angular speed) ω = 360°/24 h = 15°/h (or 2π rad/24 h ≈ 0.26 rad/h) and angular velocity direction (a unit vector) parallel to Earth's rotation axis (^ = ^, in the geocentric coordinate system).
Its angular frequency is 360 degrees per second (360°/s), or 2π radians per second (2π rad/s), while the rotational frequency is 60 rpm. Rotational frequency is not to be confused with tangential speed, despite some relation between the two concepts. Imagine a merry-go-round with a constant rate of rotation.
The radian per second (symbol: rad⋅s −1 or rad/s) is the unit of angular velocity in the International System of Units (SI). The radian per second is also the SI unit of angular frequency (symbol ω, omega). The radian per second is defined as the angular frequency that results in the angular displacement increasing by one radian every ...
A sphere rotating around an axis. Points farther from the axis move faster, satisfying ω = v / r.. In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per unit time) or the temporal rate of change of the phase argument of a sinusoidal waveform or sine function (for example, in oscillations and waves).
Degrees per second, a unit for measuring angular velocity; Direct Print Standard, part of PictBridge standard; Display PostScript, an on-screen display system; Dynamic positioning system, a means to automatically maintain a ship's position and heading by using her own propellers and thrusters; DPS protocol, a quantum key distribution protocol
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Analogous to linear motion, the angular rotation rate (degrees per second) is obtained by integrating α over time: = and the angular rotation is the time integral of the rate: = The three principal moments of inertia I x , I y , and I z about the roll, pitch and yaw axes, are determined through the vehicle's center of mass .