Flight management system approach comprehensive monitoring management method
Through the flight management system's integrated approach monitoring and management method, the approach type, status and go-around status are continuously monitored and managed, which solves the problem of coordination and cooperation of the flight management system under various approach types and improves the safety and efficiency of the approach process.
Patent Information
- Application Number
- CN202510934497.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2025-10-14
AI Technical Summary
When supporting multiple approach types, the existing flight management system lacks coordination among its functions, making it difficult to ensure the safety and efficiency of the approach process.
Through a flight management system approach integrated monitoring and management method, the approach type, approach status and go-around status are continuously monitored and managed, including judging the approach group category, approach type, approach status and go-around status, and the monitoring results are transmitted to other functional modules to achieve coordinated cooperation of various functions.
It improves the safety and efficiency of the approach process and ensures that the various functions of the flight management system work together under different approach types and conditions.
Smart Images
Figure CN120783585A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of flight management and relates to an approach integrated monitoring management method of a flight management system. Background Art
[0002] Approach is a phase of civil aircraft flight during which the aircraft must align with the runway, adjust altitude, reduce speed, and ultimately achieve a safe landing or go-around. The approach process is complex and requires the coordinated efforts of various onboard systems and flight management systems to ensure safety and efficiency.
[0003] With the improvement of flight management system functions and the development of various new technologies, the types and methods of approaches are gradually expanding. The ARINC standard specifications now include more than 18 approach types. In addition, the flight management system supports FLS-type precision approach methods similar to ILS precision approach; and for airports with complex terrain such as plateaus, it implements authorized RNP AR approach, supporting the RNP 0.1 high-precision operation standard; with the successful deployment of Beidou satellites in China, LPV approach based on satellite-based augmentation equipment is also gradually becoming popular.
[0004] The approach process involves flight planning, radio tuning, trajectory prediction, flight guidance, and surveillance and alerting within the flight management system (FMS). For LNAV and FLS approaches, the FMS must support the entire process of guiding the aircraft from the final approach segment to landing, including approach path construction, flight guidance, and surveillance and alerting during the approach phase. Integrated approach surveillance and management plays a crucial role in approach operations, continuously monitoring approach data and supporting the orderly and efficient execution of approach-related functions.
[0005] Against this backdrop, this paper proposes a comprehensive approach monitoring and management method for flight management systems supporting multiple approaches. This method monitors and manages key parameters during the approach phase. Based on data from both the flight management system's internal and external systems, this method continuously monitors and manages information such as approach type, approach status, and go-around status, ensuring the coordinated operation of all flight management system functions and the safe and efficient completion of the approach process. Summary of the Invention
[0006] The object of the present invention is to provide a method for integrated monitoring and management of approach of a flight management system, so as to solve the problem of coordination and cooperation among various functions of the flight management system during the process of the flight management system supporting approach.
[0007] To achieve the above object, the present invention provides a flight management system approach integrated monitoring management method comprising the following steps:
[0008] (1) Continuously monitor the current approach type based on the pilot-selected approach route type field, the pilot-selected glide slope usage information, APPR key information received from the flight control panel, satellite signal availability information, and the type of missed approach point;
[0009] (2) Continuously monitor the approach status as enabled or enabled + activated based on the current aircraft position, approach type, and flight plan segment data;
[0010] (3) Continuously monitor the go-around status as active or inactive based on the aircraft position and the TOGA activation signal received from the flight control system.
[0011] Preferably, step (1) includes the following specific steps:
[0012] (1-a) Based on the approach code, the approach group categories are merged to form seven approach group categories: ILS approach group, LOC approach group, GPS approach group, GPS / RNAV approach group, GLS approach group, advisory approach group, and unknown approach group; the approach route type field in the navigation database corresponding to the approach procedure selected by the pilot is received, and the approach group category is determined based on the field;
[0013] (1-b) Monitor the existence of the missed approach point and runway threshold. If the missed approach point or runway threshold segment does not exist, set the approach type to None.
[0014] (1-c) Based on the above approach grouping, if a missed approach point or runway threshold segment exists, continuously determine the approach type from the six approach types: RNP approach, non-qualified approach, conventional navigation station approach, GLS approach, ILS approach, and LOC approach based on the pilot's selected glide slope usage information, satellite signal availability information, and missed approach point type;
[0015] (1-d) For RNP approach, conventional navigation station approach and LOC approach, when the flight management system receives the APPR button information from the flight control panel as armed, the approach type is set to FLS approach;
[0016] (1-e) When the approach type is RNP approach, monitor the GNSS / FMS identifier in the navigation database corresponding to the approach procedure. If the identifier is A, set the approach type to LPV approach;
[0017] (1-f) When the approach type is RNP approach, monitor the Approach Qualifier 3 field in the navigation database corresponding to the approach procedure. When this field is F, set the approach type to RNP AR approach.
[0018] Preferably, step (2) includes the following specific steps:
[0019] (2-a) Set the initial state of the approach to be disabled;
[0020] (2-b) When the aircraft's current position is within 30 nautical miles of the destination airport reference point and the aircraft has not entered the missed approach segment, the approach status is set to enabled;
[0021] (2-c) For RNP approach and conventional navigation station approach, the approach status is continuously monitored to be active or inactive, depending on whether the approach status is enabled, the current aircraft position, and the aircraft pressure altitude.
[0022] Preferably, step (3) includes the following specific steps:
[0023] (3-a) Continuously monitor the aircraft position and whether the FAF points have been sorted:
[0024] (3-b) The FAF point has been sequenced and the TOGA signal obtained from the automatic flight control system is continuously monitored. If the TOGA signal is active, the go-around state is go-around active.
[0025] The beneficial effects of the present invention are:
[0026] The functional responses of the flight management system are different for different approach types, approach status and approach phases. Therefore, the integrated approach monitoring and management method of the flight management system proposed in the present invention can continuously monitor and manage the approach type, approach status and go-around status, and transmit the monitoring results to other functional modules of the flight management system, which is beneficial to the coordinated cooperation of other functions of the flight management system in the approach process and improves the safety and efficiency of the approach process. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The present invention is a flowchart of a method for integrated approach monitoring and management of a flight management system.
[0028] Figure 2 It is a flowchart of approach type monitoring in the present invention.
[0029] Figure 3 It is a flow chart of approach status monitoring in the present invention.
[0030] Figure 4 It is a schematic diagram of the process of monitoring the go-around status in the present invention. DETAILED DESCRIPTION
[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0032] See also Figure 1 As shown, the present invention provides a flight management system approach integrated monitoring management method, which is applied to a flight management computer carrying an ARINC424 standard navigation database, and the steps are as follows:
[0033] (1) Continuously determine the current approach type based on the approach route type field selected by the pilot, the glide slope usage information selected by the pilot, the APPR (approach) button information received from the flight control panel, the satellite signal availability information, and the missed approach point type. Figure 2 As shown, it specifically includes the following steps
[0034] (1-a) Approach group categories are merged based on the approach code to form seven approach group categories: ILS (Instrument Landing System) approach group, LOC (Localizer) approach group, GPS (Global Positioning System) approach group, GPS / RNAV (Global Positioning System / Regional Navigation) approach group, GLS (Ground-Based Augmented Landing System) approach group, advisory approach group, and unknown approach group; the approach route type field in the navigation database corresponding to the approach procedure selected by the pilot is received, and the approach group category is determined based on the field. For example, when the approach route type field corresponding to the approach selected by the pilot is I, the corresponding approach group class is the ILS approach group; when the field is L or B, the corresponding approach group class is the LOC approach group; when the field is P or N, the corresponding approach group class is the GPS approach group; when the field is V or S or R or H, the corresponding approach group class is the GPS / RNAV approach group; when the field is J, the corresponding approach group class is the GLS approach group; when the field is G, the corresponding approach group class is the advisory approach group; when there is an unknown field, the corresponding approach group class is the unknown approach group.
[0035] (1-b) Monitor the existence of the missed approach point and runway threshold. If the missed approach point or runway threshold segment does not exist, set the approach type to None.
[0036] (1-c) Based on the above approach group classification, if a missed approach point or runway threshold segment exists, the approach type is continuously determined from six approach types: RNP (Required Navigation Performance) approach, non-qualified approach, traditional navaid approach, GLS approach, ILS approach, and LOC approach, based on the pilot's selected glide slope usage information, satellite signal availability information, and missed approach point type. For example, if the approach group classification is an ILS approach group but the glide slope is not used, the approach type is a LOC approach. If the approach group classification is a GPS or GPS / RNAV approach group, if satellite signals are available, the approach type is an RNP approach. If satellite signals are unavailable, the approach type is determined to be a non-qualified approach or a traditional navaid approach based on the missed approach point type.
[0037] (1-d) For the three types of approaches identified above (RNP approach, conventional navaid approach, and LOC approach), the approach type managed by the approach monitoring function must be further determined based on pilot operations and detailed database information. For approaches of RNP approach, conventional navaid approach, and LOC approach, when the flight management system receives the APPR key information from the flight control panel indicating that it is armed, the flight management system approach monitoring function sets the approach type to FLS (Flight Management Landing System) approach;
[0038] (1-e) For RNP approaches, monitor the GNSS / FMS (Global Navigation Satellite System / Flight Management System) identifier in the navigation database corresponding to the approach code. If the identifier is A, set the approach type to LPV (Localizer with Vertical Guidance) approach.
[0039] (1-f) For RNP approaches, monitor the Approach Qualifier 3 field in the navigation database corresponding to the approach procedure. If the field is F, set the approach type to RNP AR.
[0040] (2) Based on the aircraft position, approach type and flight plan segment data, the continuous approach monitoring status is enabled or enabled + activated. Figure 2 As shown, it includes the following steps:
[0041] (2-a) The approach monitoring function of the flight management system sets the approach initial status to disabled;
[0042] (2-b) Continuously monitor the distance between the aircraft's current position and the destination airport reference point. If the distance is within 30 nautical miles and the aircraft has not entered the missed approach phase, the approach status is set to enabled. If the above conditions are not met, the approach status remains disabled.
[0043] (2-c) For RNP approaches and conventional navigation station approaches, the approach status is continuously monitored as active or inactive based on whether the approach status is enabled, the current aircraft position, and the aircraft pressure altitude. For example, if the approach is enabled, the current aircraft's great circle distance from the FAF point is less than 2 nautical miles, the lateral track deviation from the FAF point's outbound heading is less than 1.42 nautical miles, the track angle of the current segment relative to the final approach segment is less than 45 degrees, the FAF point is a TO waypoint or the next waypoint after the TO waypoint, and the aircraft pressure altitude is less than (FAF altitude + 3200 feet), the approach status is set to active. If the above conditions are not met, the approach status remains enabled or inactive.
[0044] (3) Continuously monitor the go-around status to be active or inactive based on the aircraft position and the TOGA activation signal received from the flight control system. Figure 3 As shown, it includes the following steps:
[0045] (3-a) Continuously monitor the aircraft position to determine whether the FAF (Final Approach Fix) point has been sorted;
[0046] (3-b) If the FAF point has been sorted, receive and monitor the TOGA signal obtained from the automatic flight control system. If the TOGA signal is active, the go-around state is set to active. If the above conditions are not met, the go-around state remains inactive.
[0047] The approach type, approach status, and go-around status monitored above will be continuously sent to other functional modules of the flight management system. Other functional modules will execute corresponding calculation instructions based on information such as approach type and approach status to achieve a safe and efficient approach process.
[0048] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.
Claims
1. A flight management system approach integrated monitoring management method, characterized in that The steps include: (1) Continuously monitor the current approach type based on the pilot-selected approach route type field, the pilot-selected glide slope usage information, APPR key information received from the flight control panel, satellite signal availability information, and the type of missed approach point; (2) Continuously monitor the approach status as enabled or enabled + activated based on the current aircraft position, approach type, and flight plan segment data; (3) Continuously monitor the go-around status as active or inactive based on the aircraft position and the TOGA activation signal received from the flight control system.
2. The method for integrated approach monitoring and management of a flight management system according to claim 1, wherein: Step (1) includes the following specific steps: (1-a) Based on the approach code, the approach group categories are merged to form seven approach group categories: ILS approach group, LOC approach group, GPS approach group, GPS / RNAV approach group, GLS approach group, advisory approach group, and unknown approach group; the approach route type field in the navigation database corresponding to the approach procedure selected by the pilot is received, and the approach group category is determined based on the field; (1-b) Monitor the existence of the missed approach point and runway threshold. If the missed approach point or runway threshold segment does not exist, set the approach type to None. (1-c) Based on the above approach grouping, if a missed approach point or runway threshold segment exists, continuously determine the approach type from the six approach types: RNP approach, non-qualified approach, conventional navigation station approach, GLS approach, ILS approach, and LOC approach based on the pilot's selected glide slope usage information, satellite signal availability information, and missed approach point type; (1-d) For RNP approach, conventional navigation station approach and LOC approach, when the flight management system receives the APPR button information from the flight control panel as armed, the approach type is set to FLS approach; (1-e) When the approach type is RNP approach, monitor the GNSS / FMS identifier in the navigation database corresponding to the approach procedure. If the identifier is A, set the approach type to LPV approach; (1-f) When the approach type is RNP approach, monitor the Approach Qualifier 3 field in the navigation database corresponding to the approach procedure. When this field is F, set the approach type to RNP AR approach.
3. The method for integrated approach monitoring and management of a flight management system according to claim 1, wherein: Step (2) includes the following specific steps: (2-a) Set the initial state of the approach to be disabled; (2-b) When the aircraft's current position is within 30 nautical miles of the destination airport reference point and the aircraft has not entered the missed approach segment, the approach status is set to enabled; (2-c) For RNP approach and conventional navigation station approach, the approach status is continuously monitored as active or inactive, depending on whether the approach status is enabled, the current aircraft position, and the aircraft pressure altitude.
4. The method for integrated approach monitoring and management of a flight management system according to claim 1, wherein: Step (3) includes the following specific steps: (3-a) Continuously monitor the aircraft position and whether the FAF points have been sorted: (3-b) The FAF point has been sequenced and the TOGA signal obtained from the automatic flight control system is continuously monitored. If the TOGA signal is active, the go-around state is go-around active.