- steer angle
- the angle between the projection of a longitudinal axis of the vehicle and the line of intersection of the wheel plane and the road surface.

*Mechanics glossary.
2013.*

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**Ackerman steer angle gradient**— the rate of change of Ackerman steer angle with respect to change in steady state lateral acceleration on a level road at a given trim and test conditions. Note: Ackerman steer angle gradient is equal to the wheelbase divided by the square of the … Mechanics glossary**Ackerman steer angle**— the angle whose tangent is the wheelbase divided by the radius of turn … Mechanics glossary**angle**— Ackerman steer angle aerodynamic angle of attack ambient wind angle attitude angle bank angle camber angle caster angle course angle heading angle inclination angle phase angle sideslip angle … Mechanics glossary**Angle of arrival**— measurement, or AoA, is a method for determining the direction of propagation of a radio frequent wave incident on an antenna array. AoA determines the direction by measuring the Time Difference of Arrival (TDOA) at individual elements of the… … Wikipedia**neutral steer**— a vehicle is neutral steer at a given trim if the ratio of the steering wheel angle gradient to the overall steering ratio equals the Ackerman steer angle gradient … Mechanics glossary**Caster angle**— is the angular displacement from the vertical axis of the suspension of a steered wheel in a car, bicycle or other vehicle, measured in the longitudinal direction. It is the angle between the pivot line (in a car an imaginary line that runs… … Wikipedia**suspension steer and roll properties**— it is possible for a vehicle to be understeer for small inputs and oversteer for large inputs (or the opposite), since it is a nonlinear system and does not have the same characteristics at all trims. Consequently, it is necessary to specify the… … Mechanics glossary**compliance steer**— the change in steer angle of front or rear wheels resulting from compliance in suspension and steering linkages and produced by forces and/or moments applied at the tire road contact … Mechanics glossary**roll steer**— the change in steer angle of front or rear wheels due to suspension roll … Mechanics glossary**steering wheel angle**— angular displacement of the steering wheel measured from the straight ahead position (position corresponding to zero average steer angle of a pair of steered wheels) … Mechanics glossary