초록 ▼

By utilizing a radio altimeter in conjunction with a measure of the aircraft speed, landing gear position and flap position, an aircraft terrain warning system is made possible which provides a voice warning indicating that the aircraft is too low with respect to the terrain when the aircraft is abo

By utilizing a radio altimeter in conjunction with a measure of the aircraft speed, landing gear position and flap position, an aircraft terrain warning system is made possible which provides a voice warning indicating that the aircraft is too low with respect to the terrain when the aircraft is above a predetermined speed. For aircraft speeds below the predetermined speed, a voice warning is provided when the aircraft is below a predetermined altitude with the landing gear up indicating that the aircraft is too low with the gear up and when the gear is down and the flaps are not in a landing position and the aircraft descends below a second predetermined altitude a voice warning is generated indicating that the aircraft is too low with flaps up.

대표청구항 ▼

A terrain clearance warning system for aircraft comprising: a radar altimeter for generating signals representing the aircraft\s altitude above the terrain; a source of signals representing the aircraft\s speed; a source of signals representing the position of aircraft landing gear; means, responsiv

A terrain clearance warning system for aircraft comprising: a radar altimeter for generating signals representing the aircraft\s altitude above the terrain; a source of signals representing the aircraft\s speed; a source of signals representing the position of aircraft landing gear; means, responsive to said speed signal, for generating a reference altitude signal as a function of aircraft speed; means, responsive to said altitude signals and said reference altitude signals, for comparing aircraft altitude above terrain with said reference altitude signal; means, responsive to said landing gear signal and speed signal and said comparing means for generating a first type of warning signal when the airCraft has descended below a first predetermined altitude below a predetermined speed with the landing gear up; and means, responsive to said landing gear signal, said speed signal and said comparing means for generating a second type of warning signal when the aircraft has descended below a second predetermined altitude above said predetermined speed with the landing gear up.