Obstacle information system of a helicopter

摘要

The invention is related to an obstacle information system for a helicopter with a warning information processor (3) and a display unit (1) for any obstacle (2) within a predetermined minimum distance d4 with regard to said helicopter. Said warning information processor (3) is fed with information related to detected distance d5 and direction of said at least one obstacle (2) with regard to said helicopter detected by an obstacle sensor system (4) to compute and prepare the information for presentation on the display unit (1). Said display unit (1) comprises at least an indication area with a central circular surface (6) and a concentric ring-shaped area (7) around the circular surface (6). Said circular surface (6) is used exclusively for alerts, the ring-shaped area (7) is used for both, warnings as well as alerts and the repartition in the indication area of circular surface (6) and ring-shaped area (7) is dependent on the detected distance d5 of said at least one obstacle (2) with regard to said helicopter. The invention is as well related to a method of operating such an obstacle information system.