Abstract The shadowgraph visual simulation system, for a land vehicle simulator, includes a three-dimensional model of terrain; and a light source mounted at a fixed height within the boundaries of the model and able to change its relative position within the model boundaries in accordance with supposed changes of the position therein of the vehicle simulated. An upright translucent viewing screen is mounted at one side of the model and on to one side of this the light source projects a changing picture of the model scene. An observation station for a vehicle trainee is provided on the side of the screen opposite to the model and light source, wherein the point of observation of the trainee is low in relation to the screen height and the upper part of the screen is vertical and flat while the lower part curves progressively out of the vertical in the direction away from the model and light source, with the vertical upper part of the screen blending into the non-vertical lower part in a smooth curve at the ''''horizon'''' line of the picture on the screen, thereby improving the perspective for the case where the ''''viewpoint'''' represented by the light source is too high in relation to the model.
A shadowgraph visual simulation system for a land vehicle simulator, comprising a three-dimensional model of terrain, a light source mounted at a fixed height and to change its relative position within the boundaries of the model in accordance with supposed changes of the position therein of the vehicle simulated, an upright translucent viewing screen mounted at one side of the model and on to one side of which the light source projects a changing picture of the model scene, and an observation station for a vehicle trainee on the side of the screen opposite to the model and light source, and wherein the point of observation of the trainee is low in relation to the screen height and the upper part of the screen is vertical and flat while the lower part curves progressively out of the vertical in the direction away from the model and light source, with the vertical upper part of the screen blending into the nonvertical lower part in a smooth curve at the horizon line of the picture on the screen, thereby improving the perspective for the case where the viewpoint represented by the light source is too high in relation to the model.
Claim 2
Dependent Claim
199 words
A shadowgraph visual simulation system for a land vehicle simulator, comprising a three-dimensional model of terrain, a light source mounted at a fixed height and to change its relative position within the boundaries of the model in accordance with supposed changes of the position therein of the vehicle simulated, an upright translucent viewing screen mounted at one side of the model and on to one side of which the light source projects a changing picture of the model scene, and an observation station for a vehicle trainee on the side of the screen opposite to the model and light source, and wherein the point of observation of the trainee is low in relation to the screen height and the upper part of the screen is vertical and flat while the lower part curves progressively out of the vertical in the direction away from the model and light source, with the vertical upper part of the screen blending into the nonvertical lower part in a smooth curve at the horizon line of the picture on the screen, thereby improving the perspective for the case where the viewpoint represented by the light source is too high in relation to the model.