# Roll Moment

In a vehicle suspension, roll moment is the moment of inertia of the vehicle's sprung mass (the portion of its weight supported by the suspension). The roll moment is the product of the sprung mass and the square of the distance between the vehicle's roll center and its center of mass. If the vehicle is subjected to centrifugal forces, such as in a turn, the roll moment will cause the body to rotate (lean) towards the outside of the turn.

In aeronautics, the roll moment is the aerodynamic force applied at a distance from an aircraft's center of mass that causes the aircraft to undergo angular acceleration about its roll axis. The roll axis is usually defined as the longitudinal axis, which runs from the nose to the tail of the aircraft. A roll moment can be the result of wind gusts, control surfaces such as ailerons, or simply by flying at an angle of sideslip. See flight dynamics.

### Other articles related to "roll moment, moment, roll":

Countersteering - How It Works - Gyroscopic Effects
... One effect of turning the front wheel is a roll moment caused by gyroscopic precession ... The magnitude of this moment is proportional to the moment of inertia of the front wheel, its spin rate (forward motion), the rate that the rider turns the front wheel by ... motorcycle moving at 22 m/s (50 mph) that has a front wheel with a moment of inertia of 0.6 kgm2, turning the front wheel one degree in half a ...
Bicycle And Motorcycle Dynamics - Lateral Dynamics - Turning - Gyroscopic Effects
... The magnitude of this moment is proportional to the moment of inertia of the front wheel, its spin rate (forward motion), the rate that the rider turns ... For a sample motorcycle moving at 22 m/s (50 mph) that has a front wheel with a moment of inertia of 0.6 kg·m2, turning the front wheel one degree ... This, acting on the 0.6 m (2 ft) height of the center of mass, generates a roll moment of 30 N·m ...
Type 91 Torpedo - Theory: Aerial Torpedo Motion Equation - Practical Equation For Roll Moment
... First, the roll moment equation is set, then it is simplified in 2nd derivative of θ with respect to t, as follows Here we set the initial conditions at t = 0 as dθ/dt = ω0, θ = 0 to analyze the angular ... I2 Inertia coefficient with respect to lifting moment at the gravity center of the torpedo θ Roll angle of the torpedo at a right angle with the longitudinal axis In the practical iterative process in ... sense to all by the characteristics of the equation with respect to roll angle, which was obtained through the results of his numerical analyses ...

### Famous quotes containing the words moment and/or roll:

Fashion, by which what is really fantastic becomes for a moment the universal.
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There is no question what the roll of honor in America is. The roll of honor consists of the names of men who have squared their conduct by ideals of duty.
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