A simulator structure with a deck for mounting various components including controls, one or two seats, an instrument panel and an image projector. The components are mounted to the deck using suitable fasteners, such as bolts and nuts. The image projector displays a computer-generated simulated environment. The instrument panel can include actual instruments or a computer-generated image. A dome-shaped image screen can be attached to the structure that can be tiltable on a horizontal axis or, alternatively, can be movable along an arcuate support.