Obstacle and terrain warning radar system for a rotorcraft

摘要

Obstacle and terrain warning radar system (1) for a rotorcraft (2), the system having at least two assemblies (10), each having at least one radar unit, said rotorcraft (2) including at least one main rotor (20) having at least two blades (22) and a rotor head (23). Each radar unit transmits a centrifugal radar beam (17) with angular beam width in azimuth α of at least 5° and beam width in elevation ε of at least 5°. Said assemblies (10) of at least one radar unit are positioned directly on said rotor head (23) between said blades (22), said radar system (1) electronically scanning the surroundings with angular coverage in elevation of at least +/−15° and mechanically scanning the surroundings with angular coverage in azimuth of 360°, and then informing the pilot of said rotorcraft (2).

主权项

1. An obstacle and terrain warning radar system for a rotorcraft, the system having a plurality of radar units, said rotorcraft having at least one main rotor with an axis of rotation, at least two blades, and a rotor head, each radar unit transmitting a radar beam with a beam width in azimuth α of at least 5° and a beam width in elevation ε of at least 5°, the elevation direction being along said axis of rotation of said main rotor, and a zone scanned in azimuth by said radar beam being in a plane perpendicular to said axis of rotation, the radar system comprising at least two assemblies positioned and fixed mounted in a regular manner around said axis of rotation directly on said rotor head between said blades, each assembly having at least one radar unit, each radar unit transmitting a centrifugal radar beam, said radar system scanning the surroundings around said rotorcraft electronically in elevation with an angular coverage of at least +/−15° and automatically in azimuth with an angular coverage of 360° during the rotation of the said main rotor.