Antenna rotation cross for helicopter radar system fitted to rotor head above rotor blades with carrier arms attached to central fitting

摘要

The antenna rotation cross has individual carrier arms, each provided with a hollow space acting as an antenna housing for reception of an antenna and associated electronic components of a radar system with a synthetic aperture. The carrier arms are fitted to the rotor head parallel to the rotor blade plane via a central fitting (10) attached to the rotor head, with a hollow chamber (50) defined between upper and lower plates (11,12) having termination arms (15,16,17,18) and further hollow chambers (41,42,43,44) between the latter.