DEVICE TO SOLVE NAVIGATIONAL PROBLEMS Russian patent published in 1995 - IPC

FIELD: navigation. SUBSTANCE: device has baseplate 6, five transparent discs 8-12 revolving with reference to each other put on common axle 7. Graphic elements (maps of hemispheres of the Earth, paths of Keppler points, operational regions of pairs of stars, grids of interturn shifts, arcs of great circles of sphere, slider with dials, limb 41 and aiming rule 40) are marked on discs and baseplate. EFFECT: device can be used for display and analysis of elements of star, ballistic and navigation situation when solving problems of navigator's training. 4 dwg