METHOD AND APPARATUS FOR AIRCRAFT GUIDANCE

摘要

A method of guiding aircraft to effect an automatic approach to a landing place in which radar waves are transmitted to be received by the flight controls of the aircraft. The radar waves are transmitted from the ground at a carrier frequency of the order of gigahertz and define a radioelectric guiding axis situated at the intersection of a vertical radioelectric plane of alignment and a radioelectric descent plane perpendicular to the vertical plane and inclined to the horizontal. The method is particularly suitable for use with helicopters. Apparatus for carrying out the method includes a transmitter on the ground for transmitting radar waves of very short wavelength and equipment on board the helicopter comprising a receiver for the radar waves connected by a coupler to an automatic pilot of the helicopter flight controls.