Method and device for displaying flight path vector

Abstract

The invention belongs to the technical field of aviation technology avionics design, and relates to a method and a device for displaying a flight track vector, which are characterized in that the flight track vector is displayed on an attitude indication area of an integrated display by acquiring data such as a roll angle, a pitch angle, a drift angle and a flight track angle of an airplane and adopting a calculation method in the patent. A pilot can visually observe the pre-arrival position of the aircraft in the space and the deviation between the pre-arrival position of the aircraft and the current position through the indication of the flight path vector on the attitude indication area of the comprehensive display.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology and relates to a method and device for displaying a flight track vector. Background Art

[0002] The Flight Path Vector (FPV) is used to indicate the flight path angle (FPA) of the aircraft relative to the horizon and the deviation angle of the aircraft relative to the center of the pitch scale.

[0003] The pilot can intuitively observe the actual position of the aircraft in space through the indication of the flight path vector in the attitude indication area of ​​the comprehensive display. Summary of the invention

[0004] The present invention provides a method and device for displaying a flight track vector, which obtains data such as the roll angle, pitch angle, drift angle, and flight track angle of an aircraft, and adopts the calculation method of the present invention to display the flight track vector on the attitude indication area of ​​the comprehensive display. The pilot can intuitively observe the aircraft's predicted position in space and the offset between the aircraft's predicted position and the current position through the indication of the flight track vector on the attitude indication area of ​​the comprehensive display.

[0005] A first aspect of the present invention provides a method for displaying a flight track vector, comprising:

[0006] Get the aircraft's pitch angle pitch, roll angle R, drift angle DA, flight path angle FPA and attitude sphere radius R ATT ;

[0007] Using formula and Obtain the actual coordinates (X, Y) of the flight track angle symbol in the attitude indication area of ​​the comprehensive display on the aircraft;

[0008] When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area do not exceed the radius R of the attitude sphere ATT The flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's comprehensive display according to (X, Y).

[0009] Optionally, the method further includes:

[0010] When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area exceed the attitude sphere radius R ATT When the flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's integrated display according to (X′, Y′);

[0011] in,

[0012] Optional, attitude sphere radius RATT It is determined according to the size of the attitude indication area of ​​the comprehensive display on the aircraft.

[0013] Optionally, the aircraft pitch angle pitch, roll angle R, drift angle DA, and flight track angle FPA are obtained from onboard sensors.

[0014] A second aspect of the present invention provides a display device for a flight track vector, comprising:

[0015] Information acquisition module, used to obtain the aircraft's pitch angle pitch, roll angle R, drift angle DA, flight path angle FPA and attitude sphere radius R ATT ;

[0016] Coordinate acquisition module, used to use the formula and Obtain the actual coordinates (X, Y) of the flight track angle symbol in the attitude indication area of ​​the comprehensive display on the aircraft;

[0017] The display module is used to display the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area when it does not exceed the attitude sphere radius R. ATT The flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's comprehensive display according to (X, Y).

[0018] Optionally, the display module is also used to display the flight path angle symbol when the actual coordinates (X, Y) of the attitude indication area exceeds the attitude sphere radius R ATT When the flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's integrated display according to (X′, Y′);

[0019] in,

[0020] Optional, attitude sphere radius R ATT It is determined according to the size of the attitude indication area of ​​the comprehensive display on the aircraft.

[0021] Optionally, the information acquisition module is used to obtain the aircraft pitch angle pitch, roll angle R, drift angle DA, and flight track angle FPA from onboard sensors.

[0022] The present invention provides a method and device for displaying a flight track vector, which obtains data such as the roll angle, pitch angle, drift angle, and flight track angle of an aircraft, and adopts the calculation method of the present invention to display the flight track vector on the attitude indication area of ​​the comprehensive display. The pilot can intuitively observe the aircraft's predicted position in space and the offset between the aircraft's predicted position and the current position through the indication of the flight track vector on the attitude indication area of ​​the comprehensive display. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A schematic diagram of the principle of a method for displaying a flight track vector provided by the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0025] like Figure 1 As shown in the figure, the solid line coordinate system is the screen coordinate system for actually drawing the flight track vector, and the horizontal axis and vertical axis represent the pixels or distance offset on the display screen respectively. The dotted line coordinate system is the geographic coordinate system, the horizontal axis represents the horizontal reference line, and the vertical axis represents the vertical reference line.

[0026] The present invention provides a method for displaying a flight track vector, comprising:

[0027] Get the aircraft's pitch angle pitch, roll angle R, drift angle DA, flight path angle FPA and attitude sphere radius R ATT ;

[0028] Using formula and Obtain the actual coordinates (X, Y) of the flight track angle symbol in the attitude indication area of ​​the comprehensive display on the aircraft;

[0029] When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area do not exceed the radius R of the attitude sphere ATT The flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's comprehensive display according to (X, Y).

[0030] Optionally, the method further includes:

[0031] When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area exceed the attitude sphere radius R ATT When the flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's integrated display according to (X′, Y′);

[0032] in,

[0033] Optional, attitude sphere radius R ATT It is determined according to the size of the attitude indication area of ​​the comprehensive display on the aircraft.

[0034] Optionally, the aircraft pitch angle pitch, roll angle R, drift angle DA, and flight track angle FPA are obtained from onboard sensors.

[0035] Exemplarily, a method for calculating and displaying a flight track vector is as follows:

[0036] Let the aircraft pitch angle be pitch, which indicates the current pitch of the aircraft. Figure 1 As shown, a pitch scale is drawn in the figure, and the pitch degree of the aircraft in the figure is 10° downward.

[0037] The roll angle is R, which indicates the current roll of the aircraft. The drift angle is DA, which indicates the angle between the aircraft track and heading. The flight path angle is FPA, which indicates the angle of the aircraft vertical profile motion trajectory relative to the horizontal plane. Pitch, R, DA, and FPA are all measured or calculated by the onboard navigation equipment. The radius of the attitude sphere in the attitude indication area of ​​the comprehensive display is R. ATT , the actual position of the flight track angle displayed on the display screen is Figure 1 The green symbol in the screen coordinate system is assumed to be (X, Y). To obtain (X, Y), the following calculation is performed:

[0038]

[0039]

[0040] The actual coordinates of the flight path angle symbol in the attitude indication area are:

[0041] X R =ρ*cos(π / 2-α-R)+pitch*sin(R) Formula 3)

[0042] Y R =ρsin(π / 2-α-R)+pitch*cos(R) Formula 4)

[0043]

[0044] When the flight path angle symbol is at the actual coordinate (X R , Y R ) does not exceed the range of the attitude ball, the flight path angle symbol is (X R , Y R ) is displayed in the attitude area;

[0045] When the flight path angle symbol is at the actual coordinate (X R , Y R ) is beyond the range of the attitude ball, the corresponding display is on the attitude ball, specifically (X R ′,Y R ′) The coordinates are calculated as follows:

[0046]

[0047] Combining formulas 1)-7), the actual coordinates (X, Y) of the flight path angle symbol in the attitude area should be:

[0048] when but:

[0049]

[0050] when but:

[0051]

[0052]

Claims

1. A method for displaying a flight track vector, characterized in that: include: Get the aircraft's pitch angle pitch, roll angle R, drift angle DA, flight path angle FPA and attitude sphere radius R ATT ; Using formula and Obtain the actual coordinates (X, Y) of the flight track angle symbol in the attitude indication area of ​​the comprehensive display on the aircraft; When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area do not exceed the radius R of the attitude sphere ATT The flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's comprehensive display according to (X, Y).

2. The method for displaying a flight track vector according to claim 1, characterized in that: The method further comprises: When the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area exceed the radius R of the attitude sphere ATT When the flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's integrated display according to (X′, Y′); in, 3. The method for displaying a flight track vector according to claim 1, characterized in that: Radius of attitude sphere R ATT It is determined according to the size of the attitude indication area of ​​the comprehensive display on the aircraft.

4. The method for displaying a flight track vector according to claim 1, characterized in that: The aircraft pitch angle pitch, roll angle R, drift angle DA, and flight path angle FPA are obtained from onboard sensors.

5. A display device for a flight track vector, characterized in that: include: Information acquisition module, used to obtain the aircraft's pitch angle pitch, roll angle R, drift angle DA, flight path angle FPA and attitude sphere radius R ATT ; Coordinate acquisition module, used to use the formula and Obtain the actual coordinates (X, Y) of the flight track angle symbol in the attitude indication area of ​​the comprehensive display on the aircraft; The display module is used to display the actual coordinates (X, Y) of the flight path angle symbol in the attitude indication area when it does not exceed the attitude sphere radius R. ATT The flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's comprehensive display according to (X, Y).

6. The display device of the flight track vector according to claim 5, characterized in that: The display module is also used to display the flight path angle symbol when the actual coordinates (X, Y) of the attitude indication area exceeds the attitude sphere radius R ATT When the flight track angle symbol is displayed in the attitude indication area of ​​the aircraft's integrated display according to (X′, Y′); in, 7. The display device of the flight track vector according to claim 5, characterized in that: Radius of attitude sphere R ATT It is determined according to the size of the attitude indication area of ​​the comprehensive display on the aircraft.

8. The display device of the flight track vector according to claim 1, characterized in that: The information acquisition module is used to obtain the aircraft pitch angle pitch, roll angle R, drift angle DA, and flight track angle FPA from onboard sensors.

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