Proximity warning system for helicopters

摘要

A proximity warning system for a helicopter (22) comprising at least two radar units (1-3), preferably three radar units (1-3) arranged to transmit microwaves and receive reflections of said microwaves from obstacles (10). The at least two radar units (1-3) are fixed next to a main rotor head(s) (20) of the helicopter (22) for horizontally scanning an entire environment of 360° around the helicopter (22), all of said at least two radar units (1-3) operating essentially at the same frequency.

主权项

1. A proximity warning system for a helicopter for detection of obstacles and warning against rotor strike by the obstacles, the helicopter comprising a roof top structure, a main rotor and a main rotor head, the main rotor head having a non-rotating standpipe on top of the main rotor head, the proximity warning system comprising:
a standard torus-shaped housing mountable to a non-rotating standpipe or fixable on a roof top structure below a main rotor head, the standard torus-shaped housing being openable and having a joint and associated closure; and at least two radar units arranged to transmit microwaves and to receive reflections of the microwaves from obstacles, the at least two radar units being integrated into the standard torus- shaped housing for horizontally scanning an entire environment of 360° around the helicopter, a respective unit of the at least two radar units operating in at least one fundamental frequency in a range between 70 GHz and 80 GHz.