Method and apparatus for displaying flight-management information

• US 5,420,582 A
• Filed: 09/27/1993
• Issued: 05/30/1995
• Est. Priority Date: 09/15/1989
• Status: Expired due to Term

• Current Assignee: VDO Luftfahrtgeraete Werk GmbH
• Original Assignee: VDO Luftfahrtgeraete Werk GmbH
• Inventors: von Viebahn, Harro, Below, Christian, Kling, Heribert, Kubbat, Wolfgang, Mensen, Heinrich
• Primary Examiner(s): Swarthout, Brent
• Application Number:
  US08/127,411
• Time in Patent Office: 610 Days
• Field of Search: 340/961, 340/967, 340/968, 340/970, 340/971, 340/972, 340/973, 340/974, 340/975, 340/976, 340/977, 340/978, 340/979, 340/980, 364/460, 364/461, 364/428, 364/439, 364/429, 364/430, 364/434, 342/29, 342/33
• US Class Current: 340/974
• CPC Class Codes: G01C 23/005 Flight directors indicating arrangements specially adapted for rotary gyroscopes G01C19/32
• CPC Class Codes: G09G 2340/10 Mixing of images, i.e. displayed pixel being the result of an operation, e.g. adding, on the corresponding input pixels
• CPC Class Codes: G09G 2340/14 Solving problems related to the presentation of information to be displayed
• CPC Class Codes: G09G 2380/12 Avionics applications

Abstract

In a method and an apparatus for displaying flight management information for an aircraft, a three-dimensional display of the flight space with at least one horizon and the predicted flight path of the aircraft is effected by means of an image reproduction device. The predicted flight path is preferably displayed as a series of symbols which assume, within the flight space displayed, the predicted position and the predicted altitude of the aircraft with respect to the flight space at different points in time.

Claims

1. A method for displaying flight management information including predicted flight path and a predicted position and a predicted attitude for an aircraft, wherein data of said predicted flight path has been previously computed from aircraft speed, altitude, heading and acceleration, comprising steps of;

providing a three-dimensional display of air space;

employing an image reproduction device to present in the display at least one horizon and the predicted flight path of the aircraft;

calculating predicted position and predicted attitude of the aircraft from aircraft speed, altitude, heading and acceleration;

including in the display or the predicted flight path the predicted position and the predicted attitude of the aircraft at various points in time in a series of predicted positions along the predicted flight path;

identifying each of a plurality of predicted positions of the aircraft by a symbol to produce a series of the symbols, each of the symbols having a common predetermined configuration in the form of a three-dimensioned object extending along the predicted flight path, the size of each symbol decreasing with increasing distance from the aircraft along the flight path;

orienting each of the symbols to have an orientation corresponding to a predicted attitude of the aircraft at each of the predicted positions of the aircraft; and

wherein each of said symbols is configured as a solid object having a top surface and a side surface visible on the display, the symbols being viewed from a position above the flight path.

2. A method according to claim 1, wherein the display of a predicted flight path is effected for a section of the path which the aircraft travels over within a predetermined period of time, having a duration of approximately a few seconds.

3. A method according to claim 2, wherein the series of symbols, within a displayed flight space, assume the predicted position and the predicted attitude of the aircraft with respect to the flight space at various points in time.

4. A method according to claim 3, wherein said flight management information includes predicted heading, the method further comprising steps of

computing a first of the symbols with respect to altitude and attitude in accordance with the predicted flight path;

aligning the first of the symbols in accordance with the actual heading of the aircraft; and

presenting additional ones of the symbols which are aligned in accordance with a predicted ground track.

5. A method according to claim 4, wherein

each of the symbols is formed by a triangular disk of finite thickness which lies in the predicted path of an extended landing gear, one tip pointing in the predicted direction of flight.

6. A method according to claim 3, wherein said flight management information includes predicted speed of an aircraft, and

wherein the symbols are given colors which are a function of aircraft speed predicted for respective ones of the symbols.

7. A method according to claim 6, wherein the symbols have a first color within a normal speed range, a second color within the range of the lower limit speed and a third color within the range of the upper limit speed.

8. A method according to claim 6, further comprising a step of

predicting the speed from true air speed measured.

9. A method according to claim 1, wherein said flight management information includes wind shear, the method further comprising a step of

indicating the existence of wind shear by blinking and/or by changing color of at least a part of the display.

10. A method according to claim 1, wherein

the predicted flight path is based on a calculation from actual data, including speed, heading, altitude, rate of climb, attitude angle, and the acceleration acting on the aircraft.

11. A method according to claim 1, wherein

the predicted flight path is based on control inputs including rudder position, and engine output.

12. A method according to claim 1, further comprising a step of

providing a display of the ground.

13. A method according to claim 12, further comprising steps of

showing a three-dimensional display of flight space including a ground grid which is aligned geographically or magnetically;

and

forming the lines of a grid in the display with a constant spacing of preferably one nautical mile or one geodetic angular minute.

14. A method according to claim 13, wherein the display of the flight space comprises a display of an existing runway.

15. A method according to claim 14, further comprising a step of

including furthermore the center line of the runway, the center line being shown extended in the direction of the approach.

16. A method according to claim 13, wherein the three-dimensional display of the flight space includes a display of a prescribed-path channel for a landing approach.

17. A method according to claim 13, further comprising a step of

presenting additional ground features of a set of features consisting of mountains, buildings, taxiways, and traffic routes within the three-dimensional display of the flight space.

18. A method according to claim 13, wherein a color of a surface disposed between the grid and the horizon is a mixture of the color of the ground and the converging lines of the grid.

19. A method according to claim 13, further comprising a step of showing a part of the grid with one color, and a remaining part of the grid with a second color different from the first color.

20. A method according to claim 13, further comprising a step of coloring a portion of a part of the grid which touches the ground at one place with a color different from a remainder of said grid part.

21. A method according to claim 13, wherein the grid is located at an altitude higher than elevations of the ground.

22. A method according to claim 13, further comprising a step of

presenting ground navigation facilities in the display of flight space.

23. A method according to claim 22, further comprising a step of showing fixed points, to be flown over at an altitude of flight of the aircraft, in the shape of frames with a vertical connecting line to the ground.

24. A method according to claim 1, wherein a length of a part of the predicted flight path is displayed, the method further comprising a step of

presenting in the display a frame which characterizes a prescribed flight path at a place which lies in front of the aircraft essentially by the length of a displayed part of the predicted flight path.

25. A method according to claim 1, further comprising steps of

presenting in the display data on a predicted flight path of another aircraft, and

projecting the predicted flight path of the other aircraft into the display of the air space.

26. A method according to claim 25, further comprising the step of giving, upon dangerous proximity of the predicted flight path, a warning signal and suggestions for a change in heading.

27. A method according to claim 13, further comprising a step of

showing, for conditions of flight above a predetermined flight altitude, a second grid above the ground in the display.

28. A method according to claim 27, wherein the second grid represents a fixed flight plane and is characterized by the altitude of the flight plane.

29. A method according to claim 1, further comprising a step of

displaying additional information in the form of alphanumeric symbols and/or scales with pointers by means of an image reproduction device.

30. A method according to claim 29, wherein the additional information comprises flight data consisting of altitude, speed, development of speed, limit speed, rate of climb/descent, heading, pitch angle, roll angle, and position of the horizon.

31. A method according to claim 29, further comprising a step of

displaying warning signals by means of the image reproduction device.

32. A method according to claim 29, wherein said flight management information includes predicted heading and location for aircraft pullout, the method further comprising a step of

presenting a horizontal scale for the heading, the scale having a first marker for the heading flown at the time and a second marker representing the heading which is reached as predicted in accordance with a standard pullout.

33. A method according to claim 29, further comprising a step of

showing, for an indication of the pitch angle, marks in the lateral regions of the air space, which marks lie on a displayed horizon in case of level flight and are provided in addition with a numerical indication of the pitch angle.

34. A method according to claim 1, further comprising a step of

designating in the three-dimensional display of the air space a maximum flight path altitude under the current flight condition.

40. A method according to claim 1, wherein the symbols have a triangular form, and the orienting step provides for placing the vertex of a triangle at a forward end of the symbols with respect to forward movement of the aircraft along the predicted flight path.

41. A method according to claim 40, further comprising a step of presenting a grid on the display to the grid wherein the magnitudes of the dimensions increase with decreasing altitude of the aircraft and decrease with increasing altitude of the aircraft.

42. A method according to claim 1, further comprising a step of arranging the symbols one behind the other along the predicted flight path wherein one of the symbols appears to contact a next one of the symbols.

35. An apparatus for displaying aircraft flight space and flight guidance information including predicted flight path for an aircraft, comprising

a graphic computer and an image reproduction device operatively coupled to the computer to form a three-dimensional display of the flight space with at least one horizon and a predicted flight path of the aircraft wherein;

the computer includes means responsive to aircraft speed, altitude, heading and acceleration for presenting predicted flight path, predicted position and predicted attitude of the aircraft in the display at various points in time in a series of positions along the predicted flight path;

the image reproduction device provides symbols on said display

the computer identifies a plurality of predicted positions of the aircraft by a series of the symbols, each of the symbols having a common predetermined configuration in the form of a three-dimensional object extending along the predicted flight path;

the computer provides varying sizes for the symbols such that the sizes of the symbols decrease with increasing distance from the aircraft along the flight path;

the symbols have orientations corresponding to a predicted attitude of the aircraft at each of the predicted positions of the aircraft; and

wherein each of said symbols is configured as a solid object having a top surface and a side surface visible on the display, the symbols being viewed from a position above the flight path.

36. An apparatus according to claim 35, wherein the image reproduction device comprises a two-dimensional display screen formed of a cathode ray tube, an LCD or a plasma arrangement.

37. An apparatus according to claim 35, wherein the image reproduction device contains means for three-dimensional, in particular holographic, display.

38. An apparatus according to claim 35, wherein the image reproduction device produces two image displays to be fed to the respective eyes of a pilot.

39. An apparatus according to claim 38, wherein the image reproduction device further comprises devices for attachment on the head of the pilot.

43. An apparatus according to claim 35, wherein the symbols are arranged one behind the other along the predicted flight path, and wherein one of the symbols appears to contact a next one of the symbols.