BOARD FOR SELECTING OBSERVATION OBJECTS FROM ORBITAL SPACECRAFT Russian patent published in 2012 - IPC G01C21/24 B64G1/22 

FIELD: physics.

SUBSTANCE: board for selecting a ground surveillance object from an orbital spacecraft refers to space engineering. The board for selecting ground surveillance objects from an orbital spacecraft has a flexible belt with a map of the surface of the plane, a semitransparent plate placed on top and a device for enabling movement of the belt with the map along the semitransparent plate from two shafts spaced apart and mounted parallel each other. The semitransparent plate consists of two parts. One edge of the first part of the semitransparent plate is curvilinear and has the shape of the curved line of the orbit of the spacecraft between ascending and descending nodes and the other edge is directed along the equator line of the map. One edge of the second part of the semitransparent plate is curvilinear and has the shape of the curved line of the orbit of the spacecraft between ascending and descending nodes and the other edge is directed along the latitude line of the map. Both parts of the semitransparent plate are mounted with superposition of the outermost points of the curvilinear edge of one part of the semitransparent plate with the outermost points of the curvilinear edge of the other part of the semitransparent plate and with possibility of each part of the semitransparent plate turning about an axis directed along the equator line of the map.

EFFECT: improved ergonomic capabilities of the board owing to prevention of obscuring of the map of the plane by the semitransparent plate and providing direct access to the map of the planet when using the board.

2 dwg