A method and device for early warning of working state of an aviation turboshaft engine

Abstract

The application provides a kind of method and device suitable for aviation turboshaft engine working state early warning, comprising: obtaining early warning strategy type, and determining the monitoring object associated with the engine according to the early warning strategy type;According to the early warning strategy in the early warning strategy type, obtain the use time information and the use frequency information for the monitoring object;According to the use time information and the use frequency information, determine the corresponding early warning identifier, maintenance identifier and early warning strategy adjustment mode for the monitoring object.The application accurately obtains the use time information and the use frequency information of engine working state through corresponding early warning strategy, and displays the corresponding early warning identifier, so that the worker more clearly knows the use state of the engine in OEI state, to ensure flight safety.In addition, the maintenance identifier obtained under OEI state can enable ground maintenance support personnel to timely and accurately perform maintenance work according to the operating conditions under OEI state.

Description

Technical Field

[0001] This invention relates to the field of aviation engine performance testing technology, and in particular to a method for early warning of the operating status of an aviation turboshaft engine, and a device for early warning of the operating status of an aviation turboshaft engine. Background Technology

[0002] In an aircraft emergency, the state where one engine is not operational is referred to as OEI (One Engine Inoperative). When an aircraft equipped with two engines is in flight, under certain circumstances, engine failure may occur due to factors such as poor fuel supply and air intake, engine mechanical malfunction, cloud icing, or improper use of the anti-icing system. Therefore, if an aircraft experiences engine failure during operation, it is essential to ensure the safe termination of the flight without any accidents.

[0003] The existing engine OEI alarm logic for aircraft is relatively simple. It mainly involves setting the gas turbine speed and gas turbine outlet temperature range, confirming the engine's entry into OEI status based on the temperature range, and then displaying a 10-second countdown timer within the control system. However, the existing engine OEI alarm strategy does not differentiate between single entry and cumulative time in the countdown logic, and it does not provide an engine maintenance flag after the engine exits OEI status. This may lead to pilots not clearly understanding the use of the engine OEI status, and after the engine enters OEI status, flight data analysis is required to determine the engine's OEI usage. The lack of a clear maintenance flag after landing makes it impossible to provide a clear maintenance indication for the engine.

[0004] Therefore, how to better understand the engine's operational status under OEI conditions to ensure flight safety and enable ground maintenance personnel to perform maintenance work in a timely and accurate manner based on the operating status under OEI conditions has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a method and device for early warning of the operating status of aircraft turboshaft engines, in order to solve the problem in the prior art of how to more clearly know the operating status of the engine under OEI status, so as to ensure flight safety and enable ground maintenance personnel to perform maintenance work in a timely and accurate manner based on the operating status under OEI status.

[0006] To achieve the above objectives, the present invention provides a method for early warning of the operating status of an aero-turboshaft engine, comprising: obtaining an early warning strategy type, and determining a monitoring object associated with the engine based on the early warning strategy type;

[0007] The usage time and usage frequency information for the monitored object are obtained according to the early warning strategy in the early warning strategy type; the early warning strategy type includes Ng / T45 count early warning strategy type and MKp count early warning strategy type;

[0008] Based on the usage time information and the usage frequency information, determine the corresponding early warning icon, maintenance icon, and early warning strategy adjustment method for the monitored object.

[0009] Optionally, the monitoring object includes: determining the associated operating status of the engine based on the Ng / T45 counting early warning strategy type; and determining the associated torque usage status of the engine based on the MKp counting early warning strategy type.

[0010] Optionally, obtaining the usage time information and usage frequency information for the monitored object according to the early warning strategy in the early warning strategy type includes:

[0011] Based on the Ng / T45 counting strategy in the aforementioned Ng / T45 counting early warning strategy type, the usage time information and usage frequency information for the engine's operating status are obtained; and...

[0012] The usage time information and usage frequency information of the torque usage status of the engine are obtained according to the MKp counting strategy in the MKp counting early warning strategy type.

[0013] Optionally, determining the warning identifier, maintenance identifier, and warning strategy adjustment method corresponding to the monitored object based on the usage time information and the usage frequency information includes: determining the warning identifier and maintenance identifier corresponding to the engine's operating status based on the usage time information of the engine's operating status; determining the warning strategy adjustment method corresponding to the engine's operating status based on the usage frequency information of the engine's operating status; and determining the warning identifier, maintenance identifier, and warning strategy adjustment method corresponding to the engine's torque monitoring object based on the usage time information and usage frequency information of the engine's torque usage status.

[0014] Optionally, determining the warning and maintenance indicators corresponding to the engine's operating status based on the engine's operating time information includes:

[0015] Obtain a preset usage time threshold and a preset usage time extreme value that are associated with the working and operating status of the engine;

[0016] The usage time information of the engine's working status is matched with the preset usage time threshold and the preset usage time extreme value to obtain first time information that is greater than the preset usage time threshold, second time information that is less than the preset usage time threshold, and third time information that meets the preset usage time extreme value.

[0017] The corresponding warning and maintenance indicators are determined based on the first time information, the second time information, and the third time information, respectively.

[0018] Optionally, it also includes: when obtaining a maintenance identifier for the operating status of the engine, the Ng / T45 counting strategy obtains additional maintenance identifier data for the maintenance identifier.

[0019] Optional, also includes:

[0020] Obtain repair clearance information for the repair identifier;

[0021] The added maintenance identifier data for the maintenance identifier will be eliminated based on the maintenance elimination information.

[0022] Optionally, the Ng / T45 counting strategy and the MKp counting strategy obtain the corresponding usage time information and usage count information respectively using a reverse counting strategy.

[0023] Optionally, the maintenance identifier includes different levels of maintenance identifiers, which are determined based on the time length of the first time information terminal, the second time information, and the third time information.

[0024] The present invention also provides a warning device for the operating status of an aero-turboshaft engine, comprising:

[0025] The monitoring object determination unit is used to obtain the early warning strategy type and determine the monitoring object associated with the engine according to the early warning strategy type; the early warning strategy type includes the Ng / T45 counting early warning strategy type and the MKp counting early warning strategy type;

[0026] The information acquisition unit is used to obtain usage time information and usage frequency information for the monitored object according to the early warning strategy in the early warning strategy type.

[0027] The early warning information determination unit is used to determine the early warning identifier, maintenance identifier, and early warning strategy adjustment method corresponding to the monitored object based on the usage time information and the usage frequency information.

[0028] The technical effects and advantages of this invention are as follows:

[0029] This invention provides a method for early warning of the operating status of an aircraft turboshaft engine, comprising: obtaining an early warning strategy type and determining a monitoring object associated with the engine based on the early warning strategy type; the early warning strategy type includes an Ng / T45 count early warning strategy type and an MKp count early warning strategy type; obtaining usage time information and usage frequency information for the monitoring object based on the early warning strategy in the early warning strategy type; and determining an early warning identifier, a maintenance identifier, and an early warning strategy adjustment method for the monitoring object based on the usage time information and the usage frequency information. This embodiment accurately obtains the usage time information and usage frequency information of the engine operating status through the corresponding early warning strategy and displays the corresponding early warning identifier, enabling personnel to more clearly understand the engine's operating status in the OEI state, thereby ensuring flight safety. Furthermore, the maintenance identifier obtained in the OEI state allows ground maintenance personnel to perform maintenance work promptly and accurately based on the operating status in the OEI state.

[0030] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0031] Figure 1 A flowchart for an early warning method for the operating status of an aero-turboshaft engine;

[0032] Figure 2 This is a structural schematic diagram of an early warning device for the operating status of an aircraft turboshaft engine. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides a method for early warning of the operating status of aero-engine turboshaft engines, addressing the problem in existing technologies of how to more clearly understand the engine's operating status under OEI (Out of Engine Indication) conditions to ensure flight safety and enable ground maintenance personnel to perform timely and accurate maintenance based on the operating status under OEI conditions. Figure 1 As shown. The method includes the following steps:

[0035] 1. Obtain the early warning strategy type, and determine the monitoring object associated with the engine based on the early warning strategy type.

[0036] In this step, the warning strategy types include the Ng / T45 counting warning strategy type and the MKp counting warning strategy type. The Ng / T45 counting warning strategy type corresponds to the Ng / T45 counting strategy, specifically implemented through a set Ng / T45 counting device. The Ng / T45 counting device includes a time counter and a count counter. After the engine enters the OEI state, the time counter can be used to count the single-time usage time and cumulative usage time, as well as the single-time usage count and cumulative usage count, thereby accurately obtaining the engine's operating status. The MKp counting warning strategy type corresponds to the MKp counting strategy, specifically implemented through a set MKp counting device. The MKp counting device includes a time counter and a count counter. After the engine enters the OEI state, the time counter can be used to count the single-time usage time and cumulative usage time, as well as the count counter can be used to count the single-time usage count and cumulative usage count.

[0037] In this step, the monitoring objects associated with the engine include those associated with the engine's operating status and those associated with the engine's torque usage status. Correspondingly, determining the monitoring objects associated with the engine based on the warning strategy type includes: determining the monitoring objects associated with the engine's operating status based on the Ng / T45 counting warning strategy type; and determining the monitoring objects associated with the engine's torque usage status based on the MKp counting warning strategy type.

[0038] 2. Obtain usage time information and usage frequency information for the monitored object according to the early warning strategy in the early warning strategy type.

[0039] After clarifying the warning strategy type and the corresponding monitoring object, usage time information and usage frequency information for the monitoring object can be obtained according to the warning strategy in the warning strategy type. Specifically, the usage time information and usage frequency information for the engine's operating status monitoring object are obtained according to the Ng / T45 counting strategy in the Ng / T45 counting warning strategy type. Specifically, the engine's operating status monitoring object is counted for time using a time counter in the Ng / T45 counting device to obtain the corresponding usage time information. The engine's operating status monitoring object is also counted for frequency using a frequency counter in the Ng / T45 counting device to obtain the corresponding usage frequency information. Furthermore, the usage time information and usage frequency information for the engine's torque usage status monitoring object are obtained according to the MKp counting strategy in the MKp counting warning strategy type. Specifically, the engine's torque usage status monitoring object is counted for time using a time counter in the MKp counting device to obtain the corresponding usage time information. The engine's torque usage status monitoring object is also counted for frequency using a frequency counter in the MKp counting device to obtain the corresponding usage frequency information.

[0040] It should be noted that, in this embodiment of the invention, the Ng / T45 counting strategy and the MKp counting strategy obtain the corresponding usage time information and usage count information using a reverse counting strategy, respectively. For example, the initial value of the time counter in the Ng / T45 counting device is set to 60s. As the engine enters the OEI state, the OEI state usage time gradually increases, and the value of the time counter in the Ng / T45 counting device decreases accordingly. That is, if the OEI state time is 10s, the value of the time counter becomes 50s. Similarly, the initial value of the usage count counter in the Ng / T45 counting device is 10. As the engine enters the OEI state, the OEI state usage count gradually increases, and the value of the usage count counter in the Ng / T45 counting device decreases accordingly. That is, if the OEI usage count is 5 times, the value of the usage count counter becomes 5. The MKp counting device uses the same technical method; for specific examples, please refer to the Ng / T45 counting device. Correspondingly, the Ng / T45 counting strategy can obtain the usage time information and usage count information for the engine's operating status monitoring object, which can be the remaining usage time information and the remaining usage count information. For example, the remaining usage time information is 5 seconds remaining, and the remaining usage count information is 5 times remaining.

[0041] 3. Determine the warning indicator, maintenance indicator, and warning strategy adjustment method corresponding to the monitored object based on the usage time information and the usage frequency information.

[0042] After obtaining the usage time and frequency information for each monitored object, the corresponding early warning identifier, maintenance identifier, and early warning strategy adjustment method are determined based on the usage time and frequency information. Specifically, the corresponding early warning identifier, maintenance identifier, and early warning strategy adjustment method are determined based on the usage time and frequency information of the engine's operating status monitoring object; and the corresponding early warning identifier, maintenance identifier, and early warning strategy adjustment method are determined based on the usage time and frequency information of the engine's torque usage status monitoring object.

[0043] Furthermore, based on the usage time information and usage frequency information of the engine's operating status monitoring object, the system determines the corresponding early warning identifier, maintenance identifier, and early warning strategy adjustment method for the engine's operating status monitoring object. This includes: determining the corresponding early warning identifier and maintenance identifier for the engine's operating status monitoring object based on the usage time information, and determining the corresponding early warning strategy adjustment method for the engine's operating status monitoring object based on the usage frequency information.

[0044] In this embodiment, determining the warning and maintenance identifiers corresponding to the engine's operating status monitoring object based on the usage time information of the monitoring object includes: obtaining a preset usage time threshold and a preset usage time extreme value associated with the engine's operating status monitoring object; matching the usage time information of the engine's operating status monitoring object with the preset usage time threshold and the preset usage time extreme value to obtain first time information greater than the preset usage time threshold, second time information less than the preset usage time threshold, and third time information satisfying the preset usage time extreme value; and determining the corresponding warning and maintenance identifiers based on the first time information, the second time information, and the third time information, respectively.

[0045] In this embodiment, the preset usage time threshold is set to 5 seconds, and the preset usage time limit is 0 seconds. Correspondingly, the first time information is greater than 5 seconds, the second time information is less than 5 seconds, and the third time information is 0 seconds. Correspondingly, the warning indicator for the first time information is "Display 'OEI in Use'", the warning indicator for the second time information is "Last 5 seconds of OEI", and the warning indicator for the third time information is "OEI usage timeout". All of these warning indicators are displayed in real time on the pilot's operating interface. By monitoring OEI usage, remaining OEI time, and OEI usage exceeding limits, pilots can gain a clearer and more accurate understanding of the engine's operating status, reducing their psychological burden.

[0046] In addition, in this embodiment, each time usage time information for a monitored object is obtained, corresponding fault information is detected in real time, and a corresponding maintenance identifier is generated based on the fault information. After obtaining the corresponding maintenance identifier, the Ng / T45 counting strategy obtains additional maintenance identifier data for the maintenance identifier, that is, records the maintenance identifier +1 in the time counter, and sends the additional maintenance identifier data to the corresponding processing system. During maintenance, the crew can perform maintenance based on the additional maintenance identifier data. After the crew repairs the corresponding fault, they can obtain maintenance clearance information for the maintenance identifier and clear the additional maintenance identifier data for the maintenance identifier based on the maintenance clearance information. For example, when there was a fault, the time counter recorded maintenance identifier +1; after the fault was repaired, the time counter recorded maintenance identifier -1, that is, the time counter recorded maintenance identifier restored to the initial state. In addition, since timeout situations are more serious, a corresponding timeout identifier can also be recorded.

[0047] Furthermore, to enable the crew to understand the severity of the fault, different levels of maintenance indicators are assigned to different fault severity levels. In one example, these different levels of maintenance indicators are determined based on the duration of the first, second, and third time information. For instance, a longer remaining time indicates a less severe fault, resulting in a lower level of maintenance indicator; conversely, a shorter remaining time indicates a more severe fault, resulting in a higher level of maintenance indicator. This embodiment allows ground crew support personnel to understand the engine's operating status under OEI conditions without relying on data analysis, thus shortening the time required for relevant data analysis and clearly identifying the level of maintenance needed for the engine.

[0048] In this embodiment, when the counting is complete, the digital values ​​corresponding to the time counter and count counter included in the Ng / T45 counting device can be reset, and the digital values ​​of the time counter and count counter included in the MKp counting device can be reset.

[0049] In this embodiment, the warning identifier and maintenance identifier corresponding to the engine torque usage status monitoring object are determined based on the usage time information and usage frequency information of the engine torque usage status monitoring object. The method for adjusting the warning strategy is detailed above, and will not be elaborated upon here. The MKp counting strategy in this embodiment can record the engine torque limit usage conditions, providing data support for aircraft transmission system safety analysis.

[0050] The present invention also provides a warning device for the operating status of aero-turboshaft engines, such as... Figure 2 As shown. The device includes: a monitoring object determination unit, used to obtain a warning strategy type and determine a monitoring object associated with the engine based on the warning strategy type; a usage information acquisition unit, used to obtain usage time information and usage frequency information for the monitoring object based on the warning strategy in the warning strategy type; and a warning information determination unit, used to determine a warning identifier, a maintenance identifier, and a warning strategy adjustment method corresponding to the monitoring object based on the usage time information and the usage frequency information.

[0051] Since the protection scheme of this device is similar to that of the above-mentioned method, it will not be described in detail here. Please refer to the explanation section of the above-mentioned method for details.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 method for early warning of the operating status of an aero-turboshaft engine, characterized in that, include: The warning strategy type is obtained, and the monitoring object associated with the engine is determined according to the warning strategy type; the warning strategy type includes Ng / T45 count warning strategy type and MKp count warning strategy type; Specifically, this involves: determining the associated operating status of the engine based on the Ng / T45 counting early warning strategy type; and determining the associated torque usage status of the engine based on the MKp counting early warning strategy type. According to the warning strategy in the aforementioned warning strategy type, the usage time information and usage frequency information for the monitored object are obtained; specifically: according to the Ng / T45 counting strategy in the Ng / T45 counting warning strategy type, the usage time information and usage frequency information for the engine's operating status are obtained; and... Based on the MKp counting strategy in the MKp counting early warning strategy type, obtain the usage time information and usage frequency information of the torque usage status of the engine; The Ng / T45 counting strategy is implemented through a set Ng / T45 counting device, which includes a time counter and a count counter; the MKp counting strategy is implemented through a set MKp counting device, which includes a time counter and a count counter. After the engine enters the OEI state, the monitoring object of the engine is used to count the single usage time and the cumulative usage time through a time counter, and the monitoring object of the engine is used to count the single usage time and the cumulative usage time through a number counter. Based on the usage time information and the usage frequency information, determine the corresponding early warning icon, maintenance icon, and early warning strategy adjustment method for the monitored object.

2. The method for early warning of the operating status of an aero-turboshaft engine according to claim 1, characterized in that, The step of determining the warning identifier, maintenance identifier, and warning strategy adjustment method corresponding to the monitored object based on the usage time information and the usage frequency information includes: Based on the usage time information of the engine's operating status, determine the warning and maintenance indicators corresponding to the engine's operating status; based on the usage frequency information of the engine's operating status, determine the warning strategy adjustment method corresponding to the engine's operating status; and based on the usage time and usage frequency information of the engine's torque usage status, determine the warning indicator, maintenance indicator, and warning strategy adjustment method corresponding to the torque monitoring object of the engine.

3. The method for early warning of the operating status of an aero-turboshaft engine according to claim 2, characterized in that, The step of determining the warning and maintenance indicators corresponding to the engine's operating status based on the engine's operating time information includes: Obtain a preset usage time threshold and a preset usage time extreme value that are associated with the working and operating status of the engine; The usage time information of the engine's working status is matched with the preset usage time threshold and the preset usage time extreme value to obtain first time information that is greater than the preset usage time threshold, second time information that is less than the preset usage time threshold, and third time information that meets the preset usage time extreme value. The corresponding warning and maintenance indicators are determined based on the first time information, the second time information, and the third time information, respectively.

4. The method for early warning of the operating status of an aero-turboshaft engine according to claim 3, characterized in that, Also includes: When a maintenance identifier for the operating status of the engine is obtained, the Ng / T45 counting strategy obtains additional maintenance identifier data for the maintenance identifier.

5. The method for early warning of the operating status of an aero-turboshaft engine according to claim 4, characterized in that, Also includes: Obtain repair clearance information for the repair identifier; The added maintenance identifier data for the maintenance identifier will be eliminated based on the maintenance elimination information.

6. The method for early warning of the operating status of an aero-turboshaft engine according to claim 1, characterized in that, The Ng / T45 counting strategy and the MKp counting strategy respectively obtain the corresponding usage time information and usage count information using a reverse counting strategy.

7. The method for early warning of the operating status of an aero-turboshaft engine according to claim 3, characterized in that, The maintenance identifier includes different levels of maintenance identifiers, which are determined based on the time length of the first time information terminal, the second time information, and the third time information.

8. A warning device for the operating status of an aircraft turboshaft engine, characterized in that, include: The monitoring object determination unit is used to obtain the early warning strategy type and determine the monitoring object associated with the engine according to the early warning strategy type; the early warning strategy type includes the Ng / T45 counting early warning strategy type and the MKp counting early warning strategy type; Specifically, this involves: determining the associated operating status of the engine based on the Ng / T45 counting early warning strategy type; and determining the associated torque usage status of the engine based on the MKp counting early warning strategy type. The information acquisition unit is used to obtain usage time information and usage frequency information for the monitored object according to the warning strategy in the warning strategy type; specifically, it obtains usage time information and usage frequency information for the engine's operating status according to the Ng / T45 counting strategy in the Ng / T45 counting warning strategy type; and... Based on the MKp counting strategy in the MKp counting early warning strategy type, obtain the usage time information and usage frequency information of the torque usage status of the engine; After the engine enters the OEI state, the monitoring object of the engine is used to count the single usage time and the cumulative usage time through a time counter, and the monitoring object of the engine is used to count the single usage time and the cumulative usage time through a number counter. The early warning information determination unit is used to determine the early warning identifier, maintenance identifier, and early warning strategy adjustment method corresponding to the monitored object based on the usage time information and the usage frequency information.

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