Aeronautics and astronautics – Aircraft control – Automatic
Patent
1975-07-24
1977-05-03
Blix, Trygve M.
Aeronautics and astronautics
Aircraft control
Automatic
23515022, 244183, 244186, G05D 108
Patent
active
040210090
ABSTRACT:
In the vertical path control of an area navigation system when the aircraft ascends or descends to a waypoint with an "at-or-above" or "at-or-below" altitude requirement, vertical steering is effected at a constant airspeed with regard to a reference airspeed. An alert device is included to provide a warning to the pilot when the aircraft flight path angle is less than the straight line flight path angle to the waypoint for "at-or-above" waypoints or when the flight path angle of the aircraft is greater than the straight line flight path angle to the waypoint for waypoints with an "at-or-below" altitude requirement. Altitude error is displayed on a vertical deviation indicator of an aircraft flight instrument in accordance with the difference between the actual aircraft altitude and the altitude of the next waypoint having a firm altitude requirement. When the aircraft ascends or descends to a waypoint through the pressure-barometric altitude transition, flight path angles are computed and utilized as the vertical steering reference to avoid a steering discontinuity at the transition altitude. When the aircraft is on a descent path to a waypoint and an airspeed reduction is required, vertical angles are computed and utilized for generating the vertical steering signal whereby a speed reduction transition zone is included in the flight path to effect the speed reduction and make good the desired waypoint altitude.
REFERENCES:
patent: 3691361 (1972-09-01), Perkins
patent: 3705306 (1972-12-01), Lydon
patent: 3786505 (1974-01-01), Rennie
patent: 3848114 (1974-11-01), Campbell
Baker Donald H.
Bowe Larry J.
Manning Kenzel P.
Post William C.
Blix Trygve M.
Cooper Albert B.
Eisenzopf Reinhard J.
Sperry Rand Corporation
Terry Howard P.
LandOfFree
Vertical path control for aircraft area navigation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vertical path control for aircraft area navigation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vertical path control for aircraft area navigation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-341542