In real life situations, we obtain motion cues from the ear's vestibular system, visual data and the sensation of touch. Our ears are vital for maintaining balance and indicating spatial orientation while visual cues provide overwhelming data relating our speed with other external objects. Civilian flight simulators attempt to reproduce the motion effects by accelerating the cockpit environment with the aid of various motion hardware.
The visual system is the most important sensory system for maneuverability simulation. The foveal (central) and ambient (peripheral) visual systems are used, but the peripheral visual system gives the brain the strongest motion cues.
This is simply illustrated in demonstrations of vection. Linear vection is the sensation of motion in a linear fashion. The sensation is stimulated by motion of the visual scene in the peripheral field even in the absence of motion. The typical example is the sensation of linear vection one gets while stopped in a car at a red light. The car next to yours begins to creep forward but your vehicle is stationary. You sense movement of the car in your peripheral vision as the adjacent car moves forward. Your sensation is that your neighbor is stationary and that you are beginning to creep backwards, possibly bumping into the car behind you. You immediately hit the brake only to discover it is your neighbor, and not you, who is moving. This example illustrates the power of the peripheral visual system to elicit motion cues.
In designing the visuals for the 757Simulator , one thing became evident early on. The system would have to be comprised of monitors instead of projection due to the platform moving. Therefore monitors would need to be attached to the motion base in order to keep the two properties in sync and avoid the dreaded "vomit comet".
Three 22" LCD flat screen monitors and two 54" LCD high definition televisions were chosen and purchased for this display setup.
As our two side displays are much larger than the frontals, scaling was required in order to make the entire field of view accurate. Below image will illustrate how we finalized our displays. The scaling turned out excellent as evidenced by this video shot during the taxi phase in Montreal. Note the video was shot with an IPhone so detail has been diminished by this as well as the coding process at YouTube.
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