Graphical self-adaptive oil tank volume calculation method for aircraft hydraulic system

Abstract

The invention provides a graphical self-adaptive fuel tank volume calculation method for an aircraft hydraulic system, and belongs to the technical field of aviation electromechanics, and the method comprises the steps: setting a plurality of graphic modules and a volume calculation analysis counter according to the volume calculation demand of a hydraulic energy system; setting attribute parameters of each graphic module; establishing an association relationship between the plurality of graphic modules and a volume calculation and analysis counter; according to an onboard pipeline arrangement scheme, connecting the graphic modules to obtain an overall drawing; according to the incidence relation, the flow resistance analysis counter automatically calculates the oil tank volume of each hydraulic energy system according to the path of the overall drawing; and rechecking the calculated oil tank volume of each hydraulic energy system, and carrying out error reporting reminding. According to the method, the calculation efficiency, the calculation accuracy, the self-adaptability and the universality of the fuel tank volume of the aircraft hydraulic system are improved, the error rate possibly occurring in manual calculation is reduced, and powerful support is provided for design and optimization of the aircraft hydraulic system.

Description

Technical Field

[0001] This application relates to the field of aviation electromechanical technology, and in particular to a graphical adaptive method for calculating the volume of an aircraft hydraulic system's fuel tank. Background Technology

[0002] Aircraft hydraulic systems serve a large number of system users, such as users of flight control systems (ailerons, rudders, elevators, flaps, spoilers, etc.) and landing gear systems (nose wheel steering, braking, landing gear retraction and extension, etc.). Calculating the volume of the hydraulic tank, a critical component of the hydraulic system, requires considering asymmetrical volumes during operation by various users, changes in the total volume of the hydraulic system's pipelines, and the amount of oil charged at the accumulator's rated operating pressure. During the hydraulic system design process, the actuator structures and flow requirements of system users will iterate and update as the design deepens. The specifications and types of hydraulic system pipeline components will also change dynamically, and the overall volume of the hydraulic system will be dynamically updated. Since a single aircraft's hydraulic system has thousands of pipelines, the statistical work on the system's hydraulic oil volume caused by changes in design inputs will consume significant human resources and is prone to errors. Summary of the Invention

[0003] In view of this, embodiments of this application provide a graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems, which at least partially solves the problems of low efficiency and error-proneness in calculating the fuel tank volume of aircraft hydraulic system pipelines during the system scheme iteration process in the prior art.

[0004] This application provides a graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system, the method comprising: Based on the volume calculation requirements of hydraulic energy systems, multiple graphical modules and a volume calculation analysis statistician are set up. Configure attribute parameters for each graphics module; Establish the association between multiple graphical modules and the volumetric calculation and analysis statistical instrument; Based on the onboard piping layout plan, connect the various graphic modules to obtain the overall drawing; Based on the aforementioned correlation, the flow resistance analysis statistician automatically calculates the tank volume of each hydraulic energy system according to the path of the overall plot; The calculated tank volume of each hydraulic energy system is verified, and error alerts are issued.

[0005] According to a specific implementation of an embodiment of this application, the plurality of graphic modules include a hydraulic user graphic module, a pipeline component graphic module, a pipeline connector module, and a hydraulic accessory graphic module, wherein the hydraulic accessory graphic module includes an oil tank graphic module.

[0006] According to a specific implementation of an embodiment of this application, setting attribute parameters for each graphics module includes: Configure the attribute parameters of the hydraulic user graphics module, including total volume parameters, maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The total volume parameter records the user's total volume, the volume difference parameter sets the maximum volume difference that occurs during actuator movement, the maximum power requirement parameter sets the user's maximum flow requirement under rated pressure, the mission profile parameters include aircraft usage mission profile parameters for each stage of taxiing, takeoff, climb, cruise, and landing, and the power requirement percentage parameter sets the ratio of power requirement to maximum power requirement under different mission profiles. Configure the attribute parameters of the pipeline component graphic module, including pipeline specification parameters, pipeline length parameters, and pipeline type parameters. Pipeline specification parameters are used to select different pipe diameter specifications, pipeline length parameters are used to calculate pipeline length, and pipeline type parameters include high-pressure pipeline parameters, return oil pipeline parameters, and suction oil pipeline parameters. Pipeline type parameters are used to confirm the maximum flow velocity information of the pipeline. Configure the attribute parameters of the hydraulic accessory graphics module, including accessory category parameters and volume information parameters. Accessory category parameters include tank type parameters, pump source type parameters, and control valve type parameters; volume information parameters are used to set the internal volume parameters of the accessory.

[0007] According to a specific implementation of an embodiment of this application, establishing the association between multiple graphics modules and the volumetric calculation and analysis statistician includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the tank graphics module is established sequentially based on the volume calculation and analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.

[0008] According to a specific implementation of an embodiment of this application, the step of establishing a cross-linking relationship between the user graphics module and the fuel tank graphics module in sequence based on the volumetric calculation and analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module includes: Step 31: Determine the specifications of the piping component graphic module. Connect one end of the piping component graphic module to the user graphic module and the other end to the piping connector graphic module. Step 32: Using the graphic scale, automatically determine the length parameters of each pipe in the pipe assembly graphic module; Step 33: Multiply the specification parameters obtained in Step 31 with the length parameters obtained in Step 32 to calculate the pipeline volume; Step 34: Calculate the user volume difference under each task profile; Step 35: Based on the pipeline parameters and accessory parameters under different task profiles, calculate, summarize, and sum all pipeline volume, accessory volume, and total volume parameters from the fuel tank graphic module to the user graphic module to obtain the volume and value under each task profile. Step 36: Compare the sum of volumes under each task profile to obtain the maximum sum of volumes; Step 37: Calculate the change in tank volume under the temperature difference between the highest and lowest temperatures based on the maximum value of the volume sum; Step 38: Obtain the fuel tank volume based on the user volume difference, fuel tank volume change, and fuel tank structure fixed fuel volume under each task profile.

[0009] According to a specific implementation of an embodiment of this application, determining the specification parameters of the pipeline component graphic module includes: Step 311: Connect the pipeline component graphical module to the user graphical module. The volume calculation and analysis statistician is automatically activated to extract the maximum flow rate information, power demand percentage information, and total volume parameter information from the user graphical module. Step 312: Calculate the flow requirements for each task profile; Step 313: Based on the flow demand obtained in step 312 and the maximum flow velocity value corresponding to the pipeline type, automatically obtain the pipeline specification parameters of the pipeline component graphic module.

[0010] According to a specific implementation of an embodiment of this application, the step of automatically determining the length parameter of each pipe in the pipe assembly graphic module by combining the graphic scale includes: Step 321: Set the graphic scale; Step 322: Connect the piping component graphical module to the piping connector or accessory piping using the user graphical module; Step 323: Compare the pipe component graphic module with the graphic scale and automatically assign length values ​​to obtain the length parameters of each pipe in the pipe component graphic module.

[0011] According to a specific implementation of an embodiment of this application, the calculation of the user volume difference under each task profile includes: Step 341: Set the power requirement percentage and maximum volume difference for each task profile; Step 342: Multiply the maximum volume difference by the percentage of power requirement to obtain the volume difference under this task profile; Step 343: Calculate the volume difference under each task profile.

[0012] According to a specific implementation of this application, the step of calculating the change in tank volume under the temperature difference between the highest and lowest temperatures based on the maximum value of the sum of volumes includes: The expansion coefficient is obtained by calculating the difference between the temperature coefficients of the hydraulic oil working medium under the highest and lowest temperature conditions. The change in tank volume under temperature change conditions is obtained by multiplying the expansion coefficient by the volume and the maximum value.

[0013] According to a specific implementation of an embodiment of this application, obtaining the fuel tank volume based on the user volume difference, fuel tank volume change, and fixed fuel volume of the fuel tank structure under each task profile includes: By setting a fixed fuel tank volume, the fuel tank volume change obtained from the user volume difference and temperature change under each task profile is summed with the fixed fuel tank volume to obtain the fuel tank volume under each task profile. The fuel tank volume values ​​under each task profile are compared, and the maximum value is taken as the fuel tank volume.

[0014] Beneficial effects: The graphical adaptive tank volume calculation method for aircraft hydraulic systems in this application associates the tank volume attribute parameters with the hydraulic system user and the pipelines within the system, and dynamically calculates the tank volume parameters using a graphical method. This method significantly improves the efficiency of hydraulic system tank volume calculation and reduces the error rate of manual calculation. By combining a graphical interface with an automated calculation process, real-time adaptive adjustment of the tank volume is achieved when the design input parameters are dynamically updated, effectively solving the problem of repetitive work caused by system iteration in traditional calculation methods. Especially in complex hydraulic system configuration scenarios, this method can automatically complete the volume statistics of thousands of pipelines, ensuring the accuracy and consistency of the calculation results. At the same time, the introduction of temperature change compensation mechanism and mission profile differential calculation function further improves the reliability of tank volume design, providing efficient and accurate technical support for aviation hydraulic system design. Therefore, the method of this application is simple to operate, convenient to use, highly automated, and highly efficient. Attached Figure Description

[0015] 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.

[0016] Figure 1 A flowchart of a graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system according to an embodiment of the present invention; Figure 2 This is another flowchart of a graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system according to 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] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0020] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0022] This application provides a graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system, mainly including: setting up a graphical module for hydraulic users, configuring volume difference parameters, maximum power demand parameters, and mission profile parameters; setting up a graphical module for pipeline components, configuring pipeline material property parameters, usage function classification, pipeline specification parameters, etc.; and setting up a graphical module for hydraulic accessories, configuring functional parameters and volume parameters. The system users and hydraulic energy accessories are dynamically associated using wiring, and a graphical method is used to dynamically calculate and statistically analyze the pressure drop of the hydraulic system users. The following refers to... Figure 1 and Figure 2 Provide a detailed description.

[0023] In one embodiment, a graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system is provided, referring to... Figure 1 The method includes: Step 1: Based on the volume calculation requirements of the hydraulic energy system, set up multiple graphics modules and a volume calculation analysis statistician; Step 2: Set the attribute parameters for each graphics module; Step 3: Establish the association between multiple graphics modules and the volumetric calculation and analysis statistical tool; Step 4: Connect the various graphic modules according to the onboard piping layout plan to obtain the overall drawing; Step 5: Based on the aforementioned correlation, the flow resistance analysis statistician automatically calculates the oil tank volume of each hydraulic energy system according to the path of the overall drawing diagram; Step 6: Verify the calculated tank volume of each hydraulic energy system and issue an error alert.

[0024] This embodiment proposes a graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems. This method achieves automated and accurate calculation of the fuel tank volume of aircraft hydraulic systems through the setting and association of graphical modules. Specifically, in step 1, multiple graphical modules are set according to actual needs. These modules can intuitively display the various components of the hydraulic system, and a volume calculation and analysis statistical analyzer is set to provide a foundation for subsequent calculations. Step 2 involves setting detailed attribute parameters for each graphical module to ensure that each module accurately reflects the characteristics of the hydraulic system component it represents. In step 3, by establishing the association between the graphical modules and the volume calculation and analysis statistical analyzer, the modules can work collaboratively as a whole. Step 4 connects the graphical modules according to the actual onboard piping layout to form an overall drawing diagram. This step ensures the consistency between the calculation model and the actual system. In step 5, the flow resistance analysis statistical analyzer automatically calculates the fuel tank volume of each hydraulic energy system according to the path of the overall drawing diagram based on the association relationship, greatly improving calculation efficiency. Finally, in step 6, the calculated fuel tank volume is verified, and error alerts are provided to ensure the accuracy and reliability of the calculation results. Through this series of steps, the graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems in this application embodiment effectively solves the problems existing in traditional calculation methods and provides strong support for the design of aviation hydraulic systems.

[0025] In one embodiment, the plurality of graphic modules include a hydraulic user graphic module, a pipeline component graphic module, a pipeline connector module, and a hydraulic accessory graphic module, wherein the hydraulic accessory graphic module includes a tank graphic module.

[0026] Furthermore, the setting of attribute parameters for each graphics module includes: Configure the attribute parameters of the hydraulic user graphics module, including total volume parameters, maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The total volume parameter records the user's total volume, the volume difference parameter sets the maximum volume difference that occurs during actuator movement, the maximum power requirement parameter sets the user's maximum flow requirement under rated pressure, the mission profile parameters include aircraft usage mission profile parameters for each stage of taxiing, takeoff, climb, cruise, and landing, and the power requirement percentage parameter sets the ratio of power requirement to maximum power requirement under different mission profiles. Configure the attribute parameters of the pipeline component graphic module, including pipeline specification parameters, pipeline length parameters, and pipeline type parameters. Pipeline specification parameters are used to select different pipe diameter specifications, pipeline length parameters are used to calculate pipeline length, and pipeline type parameters include high-pressure pipeline parameters, return oil pipeline parameters, and suction oil pipeline parameters. Pipeline type parameters are used to confirm the maximum flow velocity information of the pipeline. Configure the attribute parameters of the hydraulic accessory graphics module, including accessory category parameters and volume information parameters. Accessory category parameters include tank type parameters, pump source type parameters, and control valve type parameters; volume information parameters are used to set the internal volume parameters of the accessory; flow resistance information parameters are used to set the flow resistance parameters of the accessory. Pipe connector modules are used to connect pipes to pipes, and are divided into straight-through, tee, cross, etc.

[0027] In this embodiment, attribute parameters for each module are set. The attribute parameters of the hydraulic user graphics module are configured to accurately record the total volume of the user and its changes during different movements. Simultaneously, maximum power demand parameters and mission profile parameters are set to accurately simulate the hydraulic system usage of an aircraft at different flight phases, providing a detailed and accurate data foundation for subsequent calculations. The attribute parameters of the pipeline component graphics module are configured, including pipeline specifications, length, and type, ensuring that the performance and flow rate requirements of pipeline components are met in practical applications, providing crucial data for accurate tank volume calculation. The attribute parameters of the hydraulic accessory graphics module are configured, covering accessory classification and volume information, helping to accurately reflect the role and impact of hydraulic accessories in the system and providing comprehensive data support for overall calculations. The setting of the pipeline connector module ensures accurate connections between pipelines, providing a foundation for the construction of the overall drawing. Through these detailed attribute parameter settings, the graphical adaptive tank volume calculation method for the aircraft hydraulic system in this embodiment can more accurately simulate the actual system, improving computational efficiency and accuracy.

[0028] Furthermore, establishing the association between multiple graphics modules and the volumetric calculation and analysis statistician includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the tank graphics module is established sequentially based on the volume calculation and analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.

[0029] In practice, the pipeline component graphic module connects to the user graphic module and the hydraulic accessory graphic module. The volume calculation and analysis statistician is automatically activated, automatically calculating the volume of the pipeline section based on pipeline specifications, materials, and pressure type. After calculation, it searches for keywords containing "oil tank" in the hydraulic accessory graphic module, using these as the starting point for counting. Simultaneously, it extracts and records the volume information of the pipeline component graphic module and hydraulic accessory graphic module along the route, terminating when all hydraulic user graphic modules are reached. If there are multiple "oil tanks" in the system, the above steps are repeated, and the data is recorded and statistically analyzed. The volumes from "oil tank" to "user module" under each mission profile of the aircraft are statistically summed, and the maximum value is selected as the oil tank volume value.

[0030] Furthermore, the interconnection relationship between the user graphics module and the fuel tank graphics module is established sequentially based on the volumetric calculation and analysis statistical unit, the pipeline component graphics module, and the pipeline connector graphics module, including: Step 31: Determine the specifications of the piping component graphic module. Connect one end of the piping component graphic module to the user graphic module and the other end to the piping connector graphic module. Step 32: Using the graphic scale, automatically determine the length parameters of each pipe in the pipe assembly graphic module; Step 33: Multiply the specification parameters obtained in Step 31 with the length parameters obtained in Step 32 to calculate the pipeline volume; Step 34: Calculate the user volume difference under each task profile; Step 35: Based on the pipeline parameters and accessory parameters under different task profiles, calculate, summarize, and sum all pipeline volume, accessory volume, and total volume parameters from the fuel tank graphic module to the user graphic module to obtain the volume and value under each task profile. Step 36: Compare the sum of volumes under each task profile to obtain the maximum sum of volumes; Step 37: Calculate the change in tank volume under the temperature difference between the highest and lowest temperatures based on the maximum value of the volume sum; Step 38: Obtain the fuel tank volume based on the user volume difference, fuel tank volume change, and fuel tank structure fixed fuel volume under each task profile.

[0031] In this embodiment, a correlation was established. Through a series of refined steps, not only was seamless cross-linking between graphical modules achieved, but the automation and intelligence of the calculation process were also ensured. Specifically, firstly, based on the specifications of the pipeline component graphical module, the connection method between it and the user graphical module and the pipeline connector graphical module was precisely defined. This step laid the foundation for subsequent calculations. Subsequently, the actual length of each pipeline was automatically calculated using the graphical scale, making the calculation results closer to reality. By multiplying the specifications by the length parameters, the pipeline volume was quickly obtained. This innovative method greatly improved calculation efficiency. At the same time, considering the differences in user volume under different task profiles, the user volume difference under each task profile was calculated, providing necessary data support for subsequent comprehensive calculations. Based on this, according to the pipeline parameters and accessory parameters under different task profiles, the total pipeline volume, accessory volume, and total volume parameters from the tank graphical module to the user graphical module were meticulously calculated, summarized, and summed to obtain the volume sum value under each task profile. By comparing the volumes and values ​​under each mission profile, the maximum value is selected as the benchmark. The impact of the temperature difference between the highest and lowest temperatures on the fuel tank volume is further considered to calculate the change in fuel tank volume. Finally, by combining the user volume difference, fuel tank volume change, and fixed fuel volume under each mission profile, the precise fuel tank volume is obtained. The establishment of this series of relationships and the design of the calculation process not only improve the calculation accuracy but also significantly enhance the adaptability and flexibility of the method, providing strong technical support for the accurate calculation of aircraft hydraulic system fuel tank volume.

[0032] Furthermore, determining the specification parameters of the pipeline component graphic module includes: Step 311: Connect the pipeline component graphical module to the user graphical module. The volume calculation and analysis statistician is automatically activated to extract the maximum flow rate information, power demand percentage information, and total volume parameter information from the user graphical module. Step 312: Calculate the flow requirements for each task profile; Step 313: Based on the flow demand obtained in step 312 and the maximum flow velocity value corresponding to the pipeline type, automatically obtain the pipeline specification parameters of the pipeline component graphic module.

[0033] Furthermore, the automatic determination of the length parameters of each pipe in the pipeline component graphic module, in conjunction with the graphic scale, includes: Step 321: Set the graphic scale; Step 322: Connect the piping component graphical module to the piping connector or accessory piping using the user graphical module; Step 323: Compare the pipe component graphic module with the graphic scale and automatically assign length values ​​to obtain the length parameters of each pipe in the pipe component graphic module.

[0034] Furthermore, the calculation of the user volume difference under each task profile includes: Step 341: Set the power requirement percentage and maximum volume difference for each task profile; Step 342: Multiply the maximum volume difference by the percentage of power requirement to obtain the volume difference under this task profile; Step 343: Calculate the volume difference under each task profile.

[0035] Furthermore, the calculation of the change in tank volume based on the maximum value of the sum of volumes under the temperature difference between the highest and lowest temperatures includes: The expansion coefficient is obtained by calculating the difference between the temperature coefficients of the hydraulic oil working medium under the highest and lowest temperature conditions. The change in tank volume under temperature change conditions is obtained by multiplying the expansion coefficient by the volume and the maximum value.

[0036] Furthermore, the process of obtaining the fuel tank volume based on the user volume difference, fuel tank volume change, and fixed fuel volume under each task profile includes: By setting a fixed fuel tank volume, the fuel tank volume change obtained from the user volume difference and temperature change under each task profile is summed with the fixed fuel tank volume to obtain the fuel tank volume under each task profile. The fuel tank volume values ​​under each task profile are compared, and the maximum value is taken as the fuel tank volume.

[0037] In the above embodiments, the graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems, through a highly modular graphical design, achieves intuitive display and parameterized configuration of various components of the hydraulic system, providing a visual foundation for accurate calculations. Its core advantages lie in its automated correlation and dynamic calculation capabilities. By establishing an intelligent link between the graphical module and the volume analysis statistician, it can automatically deduce pipeline length, specifications, and flow resistance parameters based on the actual pipeline layout, eliminating the error risks of traditional manual calculations. Particularly in mission profile processing, this method can simultaneously simulate power demand changes throughout the entire flight phase, including taxiing, takeoff, and cruise, and, combined with temperature expansion coefficient correction, ensures that the calculation results cover extreme operating conditions. Furthermore, the path tracing function of the flow resistance analysis statistician can automatically identify the complex pipeline network of multi-tank systems and obtain the optimal volume value through iterative calculations, significantly improving design efficiency. This solution also incorporates a self-checking mechanism, providing real-time alarms for calculation anomalies. Combined with the flexibility of parameterized configuration, it can quickly adapt to the needs of different aircraft models, providing a standardized yet personalized solution for aviation hydraulic system design.

[0038] Below is a more detailed graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems, refer to [reference]. Figure 2Specifically, it includes the following steps: Step 1: Graphical Module Settings: Configure the hydraulic user graphical module, pipeline component graphical module, pipeline connector module, hydraulic accessory graphical module, and volume calculation and analysis statistical analyzer. The graphical module has attribute setting functions, and the volume calculation and analysis statistical analyzer has logical judgment, calculation, statistics, and keyword recognition functions.

[0039] Step 2: Module attribute parameter settings: Hydraulic user graphical module configuration attribute parameters: Total volume parameter, used to record the user's total volume; Volume difference parameter, used to set the maximum volume difference that occurs during actuator movement; Maximum power demand parameter, used to set the user's maximum flow demand under rated pressure; Mission profile parameter, including aircraft usage mission profiles such as taxiing, takeoff, climb, cruise, and landing; Power demand percentage parameter, used to set the power demand and maximum power demand ratio under different mission profiles.

[0040] Pipeline component graphic module configuration attribute parameters: pipeline specification parameters, used for selecting different pipe diameter specifications; pipeline length parameters, used for calculating pipeline length; pipeline type: high pressure pipeline, return oil pipeline, suction oil pipeline, used to confirm the maximum flow velocity information of the pipeline.

[0041] The hydraulic accessory graphic module configures accessory classification parameters, which are divided into categories such as oil tanks, pump sources, and control valves; volume information parameters are used to set the internal volume parameters of the accessories.

[0042] Step 3: Establish the connection between the three modules and the volume calculation and analysis statistician. Starting from any user graphical module, use the pipeline component graphical module and the pipeline connector graphical module to establish the connection between the user graphical module and the "tank" graphical module in sequence. Step 31: Determine the specifications of the piping assembly graphics module, which connects to the user graphics module at one end and the piping connector graphics module at the other end. Specifically, this includes: Step 311: The pipeline component graphic module is connected to the user graphic module. The volume calculation and analysis statistician is automatically activated and extracts the maximum flow rate information, power demand percentage information, and total volume parameter information from the user graphic module. It is in a state of waiting for calculation. Step 312: Calculate and statistically analyze the flow requirements of each mission profile using the user graphics module. For example, multiply the maximum flow parameter under the takeoff mission profile by the power requirement percentage to obtain the flow requirements under that mission profile. Step 313: Based on the flow requirement and the default maximum flow velocity value of the pipeline type, use the formula that flow rate equals flow velocity multiplied by area to calculate the cross-sectional area of ​​the pipeline to obtain the pipeline specifications and assign values. Step 32: Using the graphic scale, automatically determine the length of each pipe in the piping component graphic module, specifically including: Step 321: Set the basic information length of the graphic scale; Step 322: Connect the piping component module to the piping connector or accessory piping using the user graphical module; Step 323: Compare the pipeline component module with the scale and automatically assign the length, setting it as the pipeline length parameter.

[0043] Step 33: Calculate the pipeline volume. Use the pipeline specification parameters obtained in Step 31 and the length parameters obtained in Step 32 to obtain the pipeline volume, record and count it.

[0044] Step 34: Calculate using the user actuator volume difference: Step 341: Set the power requirement percentage and maximum volume difference for each task profile; Step 342: Multiply the maximum volume difference by the percentage of power requirement to obtain the volume difference under this task profile; Step 343: Calculate the volume difference under all task profiles, record and statistically analyze it.

[0045] Step 35: Based on the pipeline and accessory parameters under different task profiles, calculate, summarize, and sum the pipeline volume, accessory volume, and total volume parameters from the "fuel tank" accessory module to the user module to obtain the volume sum value under each task profile; Step 36: Compare the volume and value under each task profile, find the maximum value and output it.

[0046] Step 37: Calculate the change in tank volume under the difference between the highest and lowest temperatures. The expansion coefficient is obtained by subtracting the temperature coefficients of the hydraulic oil working medium under the highest and lowest temperature conditions. The expansion coefficient is then multiplied by the volume and maximum value of each task profile to obtain the change in tank volume under temperature variations. Step 38: Fuel Tank Volume Calculation. Set a fixed fuel volume for the fuel tank structure. Sum the user volume difference, the fuel tank volume change obtained from temperature changes, and the fixed fuel volume for the fuel tank structure under each task profile to obtain the fuel tank volume for each task profile. Compare the fuel tank volume values ​​under each task profile, and take the maximum value as the fuel tank volume.

[0047] Step 4: Graphic drawing: Based on the on-machine piping layout plan, connect the piping component graphic module with the hydraulic user graphic module, hydraulic accessory graphic module, and graphic modules of each piping connector.

[0048] Step 5: Automatic Identification: Set the pipeline attribute parameters, user power parameters, and accessory volume parameters. The volume calculation and analysis statistician will automatically calculate the oil tank volume of each hydraulic energy system according to the logic of Step 3.

[0049] Step Six: Result Verification: Based on the hydraulic user graphic module connected to the pipeline component graphic module, change the user's connection path to the oil tank or the percentage value of power requirement. If the oil tank volume does not change, issue an error alert. Update the oil tank volume by modifying the user's actuator volume difference setting or percentage setting. Once the requirements are confirmed to be met, the alert message is automatically cleared.

[0050] The embodiments provided by this invention achieve accurate prediction and dynamic optimization of the fuel tank volume of aircraft hydraulic systems through a highly integrated graphical modeling and adaptive computing framework. This method overcomes the limitations of traditional empirical formulas and manual calculations, and its innovation is reflected in three aspects: First, the modular graphics engine supports full-element parametric modeling of the hydraulic system, covering multiple key parameters such as pipeline flow resistance, accessory volume, and mission profile power requirements, ensuring the authenticity of the calculation basis; second, the intelligent association algorithm can automatically identify complex pipeline topologies and accurately calculate the interactive volume of multi-tank systems through path tracing technology, effectively improving computational efficiency compared to traditional methods; third, the temperature-volume coupling model introduces a dynamic correction mechanism for the hydraulic oil expansion coefficient, which can cover extreme operating conditions and achieve high calculation accuracy. Practical application data shows that this method effectively shortens the fuel tank design cycle and reduces volume redundancy, providing key technical support for the lightweighting and reliability improvement of aviation equipment.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A graphical adaptive method for calculating the volume of an aircraft hydraulic system's fuel tank, characterized in that, The method includes: Based on the volume calculation requirements of hydraulic energy systems, multiple graphical modules and a volume calculation analysis statistician are set up. Configure attribute parameters for each graphics module; Establish the association between multiple graphical modules and the volumetric calculation and analysis statistical instrument; Based on the onboard piping layout plan, connect the various graphic modules to obtain the overall drawing; Based on the aforementioned correlation, the flow resistance analysis statistician automatically calculates the tank volume of each hydraulic energy system according to the path of the overall plot; The calculated tank volume of each hydraulic energy system is verified, and error alerts are issued.

2. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 1, characterized in that, The plurality of graphic modules include a hydraulic user graphic module, a pipeline component graphic module, a pipeline connector module, and a hydraulic accessory graphic module, the hydraulic accessory graphic module including an oil tank graphic module.

3. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 2, characterized in that, The setting of attribute parameters for each graphics module includes: Configure the attribute parameters of the hydraulic user graphics module, including total volume parameters, maximum power requirement parameters, mission profile parameters, and power requirement percentage parameters. The total volume parameter records the user's total volume, the volume difference parameter sets the maximum volume difference that occurs during actuator movement, the maximum power requirement parameter sets the user's maximum flow requirement under rated pressure, the mission profile parameters include aircraft usage mission profile parameters for each stage of taxiing, takeoff, climb, cruise, and landing, and the power requirement percentage parameter sets the ratio of power requirement to maximum power requirement under different mission profiles. Configure the attribute parameters of the pipeline component graphic module, including pipeline specification parameters, pipeline length parameters, and pipeline type parameters. Pipeline specification parameters are used to select different pipe diameter specifications, pipeline length parameters are used to calculate pipeline length, and pipeline type parameters include high-pressure pipeline parameters, return oil pipeline parameters, and suction oil pipeline parameters. Pipeline type parameters are used to confirm the maximum flow velocity information of the pipeline. Configure the attribute parameters of the hydraulic accessory graphics module, including accessory category parameters and volume information parameters. Accessory category parameters include tank type parameters, pump source type parameters, and control valve type parameters; volume information parameters are used to set the internal volume parameters of the accessory.

4. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 3, characterized in that, The process of establishing the association between multiple graphics modules and the volumetric calculation and analysis statistical analyzer includes: Starting from any user graphics module, the interconnection relationship between the user graphics module and the tank graphics module is established sequentially based on the volume calculation and analysis statistician, the pipeline component graphics module, and the pipeline connector graphics module.

5. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 4, characterized in that, The system establishes a cross-linking relationship between the user graphics module and the fuel tank graphics module sequentially using the volumetric calculation and analysis statistical unit, the pipeline component graphics module, and the pipeline connector graphics module, including: Step 31: Determine the specifications of the piping component graphic module. Connect one end of the piping component graphic module to the user graphic module and the other end to the piping connector graphic module. Step 32: Using the graphic scale, automatically determine the length parameters of each pipe in the pipe assembly graphic module; Step 33: Multiply the specification parameters obtained in Step 31 with the length parameters obtained in Step 32 to calculate the pipeline volume; Step 34: Calculate the user volume difference under each task profile; Step 35: Based on the pipeline parameters and accessory parameters under different task profiles, calculate, summarize, and sum all pipeline volume, accessory volume, and total volume parameters from the fuel tank graphic module to the user graphic module to obtain the volume and value under each task profile. Step 36: Compare the sum of volumes under each task profile to obtain the maximum sum of volumes; Step 37: Calculate the change in tank volume under the temperature difference between the highest and lowest temperatures based on the maximum value of the volume sum; Step 38: Obtain the fuel tank volume based on the user volume difference, fuel tank volume change, and fuel tank structure fixed fuel volume under each task profile.

6. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 5, characterized in that, The determination of the specification parameters of the pipeline component graphic module includes: Step 311: Connect the pipeline component graphical module to the user graphical module. The volume calculation and analysis statistician is automatically activated to extract the maximum flow rate information, power demand percentage information, and total volume parameter information from the user graphical module. Step 312: Calculate the flow requirements for each task profile; Step 313: Based on the flow demand obtained in step 312 and the maximum flow velocity value corresponding to the pipeline type, automatically obtain the pipeline specification parameters of the pipeline component graphic module.

7. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 5, characterized in that, The method of automatically determining the length parameters of each pipe in the pipeline component graphic module by combining the graphic scale includes: Step 321: Set the graphic scale; Step 322: Connect the piping component graphical module to the piping connector or accessory piping using the user graphical module; Step 323: Compare the pipe component graphic module with the graphic scale and automatically assign length values ​​to obtain the length parameters of each pipe in the pipe component graphic module.

8. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 5, characterized in that, The calculation of user volume difference under each task profile includes: Step 341: Set the power requirement percentage and maximum volume difference for each task profile; Step 342: Multiply the maximum volume difference by the percentage of power requirement to obtain the volume difference under this task profile; Step 343: Calculate the volume difference under each task profile.

9. The graphical adaptive fuel tank volume calculation method for aircraft hydraulic systems according to claim 5, characterized in that, The calculation of the change in tank volume based on the maximum value of the sum of volumes under the temperature difference between the highest and lowest temperatures includes: The expansion coefficient is obtained by calculating the difference between the temperature coefficients of the hydraulic oil working medium under the highest and lowest temperature conditions. The change in tank volume under temperature change conditions is obtained by multiplying the expansion coefficient by the volume and the maximum value.

10. The graphical adaptive fuel tank volume calculation method for an aircraft hydraulic system according to claim 5, characterized in that, The process of obtaining the fuel tank volume based on the user volume difference, fuel tank volume change, and fixed fuel volume under each task profile includes: By setting a fixed fuel tank volume, the fuel tank volume change obtained from the user volume difference and temperature change under each task profile is summed with the fixed fuel tank volume to obtain the fuel tank volume under each task profile. The fuel tank volume values ​​under each task profile are compared, and the maximum value is taken as the fuel tank volume.

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