Ground proximity warning system having modified terrain closure rate warning on glide slope approach
First Claim
Patent Images
1. A ground proximity warning system for an aircraft comprising:
- means responsive to a signal representative of the altitude of the aircraft above ground and to a signal representative of the terrain closure rate of the aircraft for generating a first signal when the terrain closure rate is within a predetermined envelope for the altitude at which the aircraft is flying;
means responsive to a glid slope radio beam for generating a second signal if the aircraft deviates by more than a predetermined limit from the glide slope; and
means for altering said predetermined envelope according to a predetermined relationship between the closure rate and the altitude of the aircraft above ground when said glide slope is detected and said aircraft has not deviated more than the predetermined limit from said glide slope.
3 Assignments
0 Petitions
Accused Products
Abstract
An aircraft ground proximity warning system having an excessive terrain closure warning mode and a below glide slope warning mode monitors the glide slope signal and modifies the terrain closure warning envelope to accept a lesser terrain clearance when the aircraft is within the glide slope beam.
-
Citations
19 Claims
-
1. A ground proximity warning system for an aircraft comprising:
-
means responsive to a signal representative of the altitude of the aircraft above ground and to a signal representative of the terrain closure rate of the aircraft for generating a first signal when the terrain closure rate is within a predetermined envelope for the altitude at which the aircraft is flying; means responsive to a glid slope radio beam for generating a second signal if the aircraft deviates by more than a predetermined limit from the glide slope; and means for altering said predetermined envelope according to a predetermined relationship between the closure rate and the altitude of the aircraft above ground when said glide slope is detected and said aircraft has not deviated more than the predetermined limit from said glide slope. - View Dependent Claims (2, 3, 4)
-
- 5. In a ground proximity warning system having means for warning the pilot of an aircraft of an excessive closure rate with terrain according to a predetermined warning envelope and means for detecting a glide slope beam and the altitude of the aircraft above ground, the improvement comprising, means responsive to said glide slope beam detecting means for altering said predetermined warning envelope according to a predetermined relationship between the closure rate and the altitude of the aircraft above ground when said glide slope beam is detected.
-
10. A ground proximity warning system for an aircraft comprising:
-
means for receiving a source of signals representative of the altitude of the aircraft above ground; means for receiving a glide slope radio beam; means for providing a signal representative of the terrain closure rate of the aircraft; means responsive to the altitude of the aircraft above ground signal receiving means and to the terrain closure rate signal providing means for generating a warning if the terrain closure rate is within a predetermined warning envelope for the altitude at which the aircraft is flying; means responsive to the glide slope signal receiving means for generating a warning if the aircraft deviates more than a predetermined limit from the glide slope; and means for altering said predetermined warning envelope according to a predetermined relationship between the terrain closure rate and the altitude of the aircraft above ground when said glide slope beam is received and said aircraft has not deviated more than said predetermined limit from said glide slope. - View Dependent Claims (11)
-
-
16. A ground proximity warning system for an aircraft comprising:
-
means for receiving a source of signals representative of the altitude of the aircraft above ground; means for receiving a source of signals representative of the glide slope; means for providing a signal representative of the terrain closure rate of the aircraft; means responsive to the altitude of the aircraft above ground signal receiving means and to the terrain closure rate signal providing means for generating a warning if the terrain closure rate is within a predetermined warning envelope for the altitude at which the aircraft is flying; and means responsive to said glide slope signal for altering said warning envelope according to a predetermined relationship between the terrain closure rate and altitude of the aircraft above ground when said glide slope signal has not deviated by more than a predetermined limit from said glide slope. - View Dependent Claims (17, 18, 19)
-
Specification