A real-time flight guidance method based on a flight management system

Abstract

This invention relates to the field of airborne flight management system technology, and provides a real-time flight guidance method based on a flight management system. The method acquires the current aircraft's speed and altitude, as well as the latitude and longitude information of various waypoints in the flight plan, calculates the aircraft's turning radius in real time, and sets up a flight guidance instruction module based on the turning radius. This module includes a dial, indicator arrows, and a numerical display box to display the real-time changes in the aircraft's current magnetic heading angle and the aircraft's turning radius, thereby providing flight guidance for the current aircraft based on the flight guidance instruction module. This application combines turning radius and magnetic heading information, and designs an instrument panel to provide real-time flight guidance for safe flight during flight plan implementation, facilitating pilots' real-time observation of flight conditions and improving flight convenience.

Description

Technical Field

[0001] This invention relates to the field of airborne flight management system technology, and in particular to a real-time flight guidance method based on a flight management system. Background Technology

[0002] Flight guidance is a sub-function of the flight management system (FMS). Typically, flight guidance operates at the algorithm level, calculating guidance parameters such as roll angle, turning radius, and heading angle within the FMS. Traditional general aviation aircraft flight guidance calculates these parameters internally and displays some of them. For example, roll angle guidance uses a countdown timer to flash as the aircraft approaches a turn, alerting the pilot. Traditional heading guidance uses a display box to show the heading information in real time. However, due to the large amount of information that needs to be displayed during flight, these methods are not intuitive enough, increasing the pilot's workload. Furthermore, using flashing screen prompts for critical guidance can easily lead to confusion with warning messages, causing pilots to miss guidance information. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a real-time flight guidance method based on a flight management system to address the shortcomings of flight guidance parameter display in the prior art.

[0004] This invention provides a real-time flight guidance method based on a flight management system, specifically including:

[0005] Obtain the current flight speed and altitude of the aircraft;

[0006] Obtain the latitude and longitude information of each waypoint in the flight plan; calculate the magnetic heading angle between two adjacent waypoints based on the latitude and longitude information;

[0007] The current roll angle of the aircraft is obtained, and the turning radius of the aircraft is calculated in real time based on the flight speed, the flight altitude, and the roll angle.

[0008] A flight guidance instruction module is installed on the current aircraft's display. This module includes a dial, an indicator arrow, and a numerical display box. The indicator arrow points to a corresponding mark on the dial, and the numerical display box is positioned at the pointer of the indicator arrow. The position of the indicator arrow changes in real time according to the magnetic heading angle corresponding to the current position of the aircraft. The numerical display box displays the magnetic heading angle value in real time. The indicator arrow has a degree of curvature, which corresponds to the turning radius of the aircraft. The larger the turning radius, the smaller the curvature, and vice versa. Flight guidance is provided to the current aircraft based on this flight guidance instruction module.

[0009] Furthermore, a threshold value is set based on the flight altitude, and the flight guidance instruction module is used to determine whether to display based on the threshold value.

[0010] Furthermore, the dial has a fan-shaped design.

[0011] Furthermore, the flight guidance instruction module is overlaid with the map corresponding to the flight plan.

[0012] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include: the present invention provides a real-time flight guidance method based on a flight management system, which, by combining with the aircraft's internal guidance algorithm and redesigning the guidance interface, overlays the guidance on the map and displays the guidance direction in real time, thereby improving the accuracy and convenience of flight guidance and increasing flight safety. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a flowchart of the embedded computer hardware fault prediction method provided in the embodiments of the present invention;

[0015] Figure 2 This is a schematic diagram of the dial and flight guidance provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram showing the flight guidance in the flight plan provided in an embodiment of the present invention. Detailed Implementation

[0017] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0018] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] This invention provides a real-time flight guidance method based on a flight management system. By combining it with the aircraft's internal guidance algorithm and redesigning the guidance interface, the method overlays the guidance on a map and displays the guidance direction in real time, thereby improving the accuracy and convenience of flight guidance and increasing flight safety.

[0020] according to Figure 1 As shown, the present invention provides a real-time flight guidance method based on a flight management system, which specifically includes:

[0021] Step S100: Obtain the current flight speed and altitude of the aircraft;

[0022] Step S200: Obtain the latitude and longitude information of each waypoint in the flight plan; calculate the magnetic heading angle between two adjacent waypoints based on the latitude and longitude information;

[0023] Step S300: Obtain the current roll angle of the aircraft, and calculate the turning radius of the aircraft in real time based on the flight speed, the flight altitude and the roll angle;

[0024] Step S400: A flight guidance instruction module is set in the display of the current aircraft. The flight guidance instruction module includes a dial, an indicator arrow, and a numerical display box. The indicator arrow points to the corresponding scale on the dial, and the numerical display box is set at the pointer of the indicator arrow. The pointing position of the indicator arrow changes in real time according to the value of the magnetic heading angle corresponding to the current position of the current aircraft. The numerical display box is used to display the value of the magnetic heading angle in real time. The indicator arrow has a degree of curvature, which corresponds to the turning radius of the aircraft. The larger the turning radius of the aircraft, the smaller the curvature, and vice versa. Flight guidance is provided for the current aircraft based on the flight guidance instruction module.

[0025] Specifically, the real-time flight guidance method based on the flight management system provided by this invention combines the guidance algorithm within the FMS. First, the current aircraft speed and altitude are obtained, denoted as Vg and Hg (absolute pressure altitude). Second, the latitude and longitude information of each waypoint in the flight plan is obtained. Third, the magnetic heading angle between any two waypoints is calculated based on the latitude and longitude information of the waypoints in the flight plan. Finally, the aircraft's turning radius is calculated in real time based on the aircraft speed Vg and the roll angle calculated by the guidance command from the FMS, using the following formula:

[0026] r = Vg 2

[0027] tanφ

[0028] The aircraft's flight speed is Vg, the guidance command roll angle is φ, and the turning radius is r.

[0029] Based on the calculated turning radius, a dial is designed to display the calculated magnetic heading information, and it rotates and changes in real time as the magnetic heading changes. In this preferred embodiment, a green arrow is designed at the front of the nose, with the arrow's direction displaying the magnetic heading information in real time, and the degree of curvature reflecting the turning radius; the dial is fan-shaped, as shown in the schematic diagram below. Figure 2 As shown, flight guidance is displayed in the flight plan as follows: Figure 3 As shown.

[0030] Preferably, a threshold value is set based on the flight altitude, and the flight guidance indicator module is used to determine whether to display based on the threshold value.

[0031] Specifically, based on current flight speed and altitude information, threshold values ​​are set to control whether the dial and turning radius are displayed. For example, the design may not display these parameters when the aircraft is on the ground, but they may be displayed during takeoff, climb, or when reaching cruising altitude, to facilitate pilot control.

[0032] Preferably, the flight guidance instruction module is overlaid with the map corresponding to the flight plan.

[0033] The embodiments of the present invention achieve the following technical effects:

[0034] This invention provides a real-time flight guidance method based on a flight management system. By combining it with the aircraft's internal FMS guidance algorithm and redesigning the guidance interface, the method overlays the guidance on a map and displays the guidance direction in real time, thereby improving the accuracy and convenience of flight guidance and increasing flight safety.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the embodiments of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A real-time flight guidance method based on a flight management system, characterized in that, The method includes: Obtain the current flight speed and altitude of the aircraft; Obtain the latitude and longitude information of each waypoint in the flight plan; Calculate the magnetic heading angle between two adjacent waypoints based on the latitude and longitude information; The current roll angle of the aircraft is obtained, and the turning radius of the aircraft is calculated in real time based on the flight speed, the flight altitude, and the roll angle. A flight guidance instruction module is installed on the current aircraft's display. This module includes a dial, an indicator arrow, and a numerical display box. The indicator arrow points to a corresponding mark on the dial, and the numerical display box is positioned at the pointer of the indicator arrow. The position of the indicator arrow changes in real time according to the magnetic heading angle corresponding to the current position of the aircraft. The numerical display box displays the magnetic heading angle value in real time. The indicator arrow has a degree of curvature, which corresponds to the turning radius of the aircraft. The larger the turning radius, the smaller the curvature, and vice versa. Flight guidance is provided to the current aircraft based on this flight guidance instruction module.

2. The real-time flight guidance method based on a flight management system according to claim 1, characterized in that, The method includes: A threshold value is set based on the flight altitude, and the flight guidance instruction module is used to determine whether to display based on the threshold value.

3. The real-time flight guidance method based on a flight management system according to claim 1, characterized in that, The method further includes: The dial has a fan-shaped design.

4. The real-time flight guidance method based on a flight management system according to claim 1, characterized in that, The flight guidance instruction module is overlaid with the map corresponding to the flight plan.

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