How 6-DOF Stewart platforms simulate sustained flight accelerations within the physical confines of a training bay.
An aircraft can accelerate down a runway for miles; a simulator motion platform has only 1 to 2 meters of physical cylinder travel. Inducing sustained G-forces requires sophisticated mathematical trickery.
Motion systems utilize classical and adaptive washout filters: high-frequency onset accelerations are delivered immediately to stimulate the pilot's inner ear vestibular system, after which the platform smoothly tilts to utilize gravity to simulate sustained acceleration while washing back to neutral below human sensory detection thresholds.
Modern electric servomotors replace noisy, leaky hydraulic cylinders, delivering instant onset cues with zero backlash and lower operating maintenance costs.