Vehicle Dynamics Simulators

When a car turns, the inner and outer front wheels follow circles of different radius and so must be steered to different angles.

Calculate total car stopping distance interactively. Set speed, road friction and reaction time to see why braking distance grows as v squared.

Adjust an engine's power, rpm and displacement to see the brake mean effective pressure (BMEP), brake torque and specific power update in real time. Place engines of com…

For an EV, driving range is set almost as much by tire rolling resistance coefficient (CRR) as by battery capacity.

A tool to compute the Static Stability Factor (SSF) — the single geometric number that sets the lateral acceleration at which a vehicle begins to tip over in a corner.

Design tool for high-speed, commuter and freight rail curves.

Adjust double wishbone or MacPherson strut geometry in real time and visualize camber angle, track width change, and roll center height vs wheel travel.

Visualize tire lateral force vs slip angle and the friction ellipse with the Pacejka Magic Formula. Tune B, C, D, E to explore cornering stiffness and grip limits.

Visualize tire forces in real time. Adjust slip angle, load, and friction to explore the Pacejka Magic Formula and the friction circle.

Analyze the level coordinated turn an aircraft flies at constant altitude.

Compute axle cornering stiffness Cα, understeer gradient K, characteristic and critical speeds, steady-state yaw rate gain and turning radius from a linear 2-DOF (bicycl…

Simulate vehicle handling with linear bicycle model. Compute yaw rate, sideslip, understeer gradient, and characteristic speed.

Compute the NHTSA Static Stability Factor SSF = (Track Width / 2) / CG Height and compare it against the lateral acceleration produced by the current cornering condition.

When the brakes are applied, the car pitches nose-down and load shifts from the rear axle onto the front.