Fine granularity model packaging method for advanced aerodynamic layout aircraft

Abstract

The invention relates to a fine-granularity model packaging method for an advanced aerodynamic layout aircraft, which is characterized in that a fine-granularity-based packaging model formed by the method is combined with a fine-granularity battlefield environment and a simulation platform to carry out combat simulation deduction. Meanwhile, due to the fact that application of the advanced aerodynamic layout aircraft in a future battlefield has extremely high expansibility and uncertainty, by means of a fine-granularity advanced aerodynamic layout aircraft packaging model, a fine-granularity combat analogue simulation result is used as a feedback means, and the reliability of the aircraft packaging model is improved. An inverse-requirement iteration process is provided for the equipment design of a new-concept advanced aerodynamic layout aircraft, and the method has extremely high engineering significance. By adopting a mode of simultaneously designing, simulating and correcting, the overall design of the advanced aerodynamic layout aircraft, the combat simulation deduction and the preparation of the model library of the advanced aerodynamic layout aircraft are organically and tightly coupled.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation vehicles and relates to a fine-grained model packaging method for advanced aerodynamic layout aircraft. Background Art

[0002] Advanced aerodynamic layout aircraft refers to aircraft that are different from conventional layouts and have innovative aerodynamic layouts (appearance characteristics), such as waverider layout aircraft, tilt-rotor aircraft, variable configuration aircraft, C-wing aircraft, etc.

[0003] In the past, the equipment model design and development process of advanced layout aircraft was usually carried out in a one-way process of "building equipment concept-establishing equipment model-forming model library". Under the conditions that the future combat application prospects of advanced equipment layout aircraft are uncertain and the battlefield usage is unclear, the one-way process of building a model library has certain restrictions on the application of its existing characteristics and subsequent modification and innovation. Therefore, it is necessary to iteratively combine combat scenarios and combat concept designs to integrate combat simulation deduction with the design of fine-grained models of advanced aerodynamic layout equipment. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, to propose a fine-grained model packaging method for advanced aerodynamic layout aircraft, to realize the combined application of the design of the advanced layout aircraft model library and combat simulation, to meet the urgent engineering needs of organic integration of the overall aerodynamic design of the aircraft, the equipment model library of the aircraft, combat simulation, combat concepts, and combat scenarios to the greatest extent.

[0005] The technical solution of the present invention is: a fine-grained model packaging method for advanced aerodynamic layout aircraft, comprising the following steps:

[0006] (1) An advanced aerodynamic configuration aircraft is selected as the target object, and its overall parameters and multiple groups of appearance parameters are initially formed. The appearance parameters are used to establish a number of digital models corresponding to the aerodynamic configuration. Each digital model corresponds to a mode. Several modes are aggregated to form an equipment model package of the advanced aerodynamic configuration aircraft. Combined with the overall parameters and experience, research and judgment are carried out based on the characteristics of battlefield application, and a variety of battlefield usage methods are initially formed;

[0007] (2) for each battlefield use mode, screening specific characteristic parameters of the advanced aerodynamic configuration aircraft equipment, and selecting at most two of the multiple battlefield use modes as a set of combat operation modes for the advanced aerodynamic configuration aircraft equipment;

[0008] (3) Preliminarily encapsulating multiple groups of combat operation modes to form combat equipment packages;

[0009] (4) Preliminarily form a set of corresponding combat concepts and combat scenarios based on multiple sets of combat operation modes;

[0010] (5) According to the combat concept and combat scenario, the combat equipment package and the combat application mode are matched, and the battlefield positioning of the combat equipment package is refined;

[0011] (6) Bringing the battlefield positioning of the refined combat equipment package into the combat concept formed in step (4), revising the combat concept and combat scenario, and initially forming a set of combat simulation scenarios;

[0012] (7) Based on the combat simulation scenario in step (6), use weapons simulation software to conduct confrontation simulation between the red and blue systems, and conduct effectiveness evaluation based on the combat simulation results;

[0013] (8) comparing multiple groups of combat effectiveness evaluation results formed by multiple groups of flight trajectories, and selecting the combat operation mode of the advanced aerodynamic layout aircraft with the best effectiveness evaluation value;

[0014] (9) Based on the selected combat operation mode, the number and position deployment of the Red Army’s troop units are changed, and battlefield operations of multiple groups of Red Army equipment units are designed to form multiple sets of combat simulation scenarios and conduct large-sample simulations. The combat simulation scenario corresponding to the best effectiveness evaluation result is selected as the final combat simulation scenario;

[0015] (10) For the final combat simulation scenario, determine whether the aerodynamic configuration and its corresponding mode in the equipment model package are feasible based on the climb rate limit, thermal protection limit, usage cost and stealth limit. If feasible, obtain the final equipment model package. If not feasible, proceed to step (2).

[0016] Furthermore, the overall parameters in step (1) include maximum take-off weight, fuselage internal volume, fuel weight, thrust-to-weight ratio, climb rate, take-off taxi distance, and landing taxi distance;

[0017] The shape parameters include fuselage length, wing span, aspect ratio, wing twist angle, leading edge sweep angle, and dihedral angle;

[0018] The various battlefield usage methods formed include forward reconnaissance, battlefield support, firepower strike, and damage assessment.

[0019] Furthermore, the flight trajectory in the battlefield usage mode in step (2) is specifically:

[0020] Based on the quantitative description of the various battlefield usage methods formed, the usage of advanced layout aircraft on the battlefield is divided into the following stages:

[0021] ① Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area phase flight - mission return phase flight - landing phase;

[0022] ② Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area - suicide attack or self-destruction;

[0023] The flight process of each stage is further segmented and linearized to form the corresponding flight trajectory.

[0024] Furthermore, the specific characteristic parameters of the advanced aerodynamic layout aircraft equipment are screened in step (2), as follows:

[0025] Determine the flight altitude, speed, fuel consumption, stealth characteristics RCS, and distance to the blue target of the advanced layout aircraft during each stage of flight; for reconnaissance-type combat missions, the characteristic parameters also include the reconnaissance load characteristic parameters under the constraints of cabin volume and payload weight; for penetration and strike-type combat missions, the characteristic parameters also include the weapon load characteristic parameters under the constraints of cabin volume and payload weight; for air support-type combat missions, the characteristic parameters also include flight time, combat radius, and fuel.

[0026] Furthermore, step (2) further includes:

[0027] Assuming that the various aerodynamic configurations covered in the equipment model package are A1, A2, A3, A4, A5..., complete the design of the associators between the two aerodynamic configurations to characterize the association between different aerodynamic configurations: A1-A2 aerodynamic configuration associator, representing that the two configurations A1-A2 can be switched during combat application; A3-A5 aerodynamic configuration associator, representing that the two configurations A3-A5 can be switched during combat application; and so on.

[0028] Furthermore, in step (4), a set of corresponding combat concepts and combat scenarios are initially formed, as follows:

[0029] The operational concept includes: background conditions, action style, winning strategy, and basic connotations;

[0030] The combat scenario is the concretization of the combat concept. That is, on the basis of the formed combat concept, a description of battlefield characteristics, a combat environment design, and force deployment are formed, and then displayed with the help of campaign-level simulation software and war game simulation software.

[0031] Furthermore, in step (5), the combat equipment package and the combat application mode are matched according to the combat concept and the combat scenario, and the battlefield positioning of the combat equipment package is refined, as follows:

[0032] Based on the overall parameters, appearance parameters and configured load conditions of the advanced layout aircraft, feasible combat actions and segmented flight routes are formed under the envisioned combat scenarios; when facing typical combat missions, one of the executions is determined based on the flight route characteristics and configured load conditions of the advanced layout aircraft under the current combat concept and combat scenario; wherein the typical combat missions include forward reconnaissance, battlefield support, firepower strike, maritime patrol, and battle damage assessment.

[0033] Furthermore, in step (6), the operational concepts and operational scenarios are modified to initially form a set of operational simulation scenarios, as follows:

[0034] Using war game simulation software and campaign-level simulation software, combined with battlefield feature description, combat environment design, and force deployment, battlefield site selection, force deployment design, combat regulations design, specific red and blue force action design, and total action time design are carried out on the map to complete the design of combat simulation scenarios;

[0035] Among them, in the combat simulation scenario, the combat action time accuracy of the combat equipment package formed by the advanced aerodynamic layout aircraft is no more than 10 1 Seconds level, the combat action time accuracy of the combat equipment package formed by other equipment is no higher than 10 2 Seconds.

[0036] Furthermore, the red and blue systems confrontation simulation is carried out in step (7), based on the combat equipment package, the flight profile formed according to the change of the combat operation mode is designed according to the aerodynamic configuration associator, and finally {A i -T j}; the flight profile form is specifically:

[0037] {A1-T1,A3-T2,A4-T3,A2-T4,……}

[0038] A1-T1 means that for the first flight state, the aerodynamic configuration used is A1 and the application time is T1; A3-T2 means that for the second flight state, the aerodynamic configuration used is A3 and the application time is T2; and so on, a complete flight profile is formed; the red and blue system confrontation simulation is carried out to form multiple complete flight profiles;

[0039] The effectiveness evaluation is carried out according to the combat simulation results, as follows:

[0040] Construct an indicator system containing N indicators. First, multiple experts use the hierarchical analysis method to obtain the ranking vectors of the N indicators, and then use expert cluster analysis to obtain the weight of each indicator. According to the obtained indicator weights and ranking vectors, the performance evaluation is completed using the ADC performance evaluation method, TOPSIS method or weighted summation.

[0041] Furthermore, the combat simulation scenario formed in step (9) is specifically:

[0042] The combat simulation scenario is completed using commercial simulation software. On the battlefield map, battlefield site selection, force deployment design, combat rules design, and specific force action design for both the red and blue sides are completed to form an executable program for scenario simulation.

[0043] Carry out large sample simulation based on multiple combat simulation scenarios in step (9), as follows:

[0044] Changes are made to the details of the force deployment design in combat simulation scenarios, including changes to the number, location, and order of action of equipment, to form several sets of combat simulation scenarios. For the multiple sets of combat simulation scenarios formed, the expert scoring method and TOPSIS method are used to analyze the system contribution rate of demand satisfaction and efficiency improvement, and a series of deductions and simulations are carried out.

[0045] The beneficial effects of the present invention compared with the prior art are:

[0046] (1) The present invention effectively combines the overall / aerodynamic design of advanced aerodynamic layout aircraft with combat simulation design through an iterative correction method for advanced aerodynamic layout aircraft design and combat simulation for aerodynamic parameter design, thereby avoiding the disconnection between aerodynamic design and combat simulation and combat concept design in the previous aircraft design and development process. In view of the continuous innovation of aircraft aerodynamic layout, new layouts continue to emerge, and the current one-way process of "combat requirements-model construction-evaluation simulation-equipment development requirements" has become increasingly restrictive. The iterative correction method for advanced aerodynamic layout aircraft design and combat simulation for aerodynamic parameter design effectively utilizes new means to provide parametric support at the combat simulation level for some advanced aerodynamic parameter indicators, greatly improving the innovation space for new concept aerodynamic layout aircraft.

[0047] (2) Compared with other simulation methods, the simulation method of the present invention innovatively incorporates a fine-grained combat equipment model, and provides parameterized support for the design of each configuration A1, A2, A3, A4, A5... through a certain amount of combat simulation results.

[0048] (3) The present invention designs the triggers between the aerodynamic configurations of An-Am and Am-An (An, Am) in a differentiated manner according to the combat concept design and combat scenario construction, which greatly enhances the high credibility of the combat simulation.

[0049] (4) The present invention creatively establishes a matching relationship between equipment characteristic parameters and aerodynamic layout / overall parameters, and introduces aerodynamic layout / overall parameters at the beginning of combat concept design and development, thereby achieving tight coupling of the three. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a flow chart of the method of the present invention;

[0051] Figure 2 The schematic diagram of the flight mode corresponding to the flight status;

[0052] Figure 3 It is the flowchart of AHP;

[0053] Figure 4 Determine the flow chart for expert weights. DETAILED DESCRIPTION

[0054] The present invention will be further described below in conjunction with the embodiments.

[0055] Example 1

[0056] like Figure 1 As shown, the present invention proposes a fine-grained model packaging method for advanced aerodynamic layout aircraft, comprising the following steps:

[0057] Step (1): select an advanced aerodynamic configuration aircraft as the target object, preliminarily form its overall parameters and multiple groups of appearance parameters, use the appearance parameters to establish a number of digital models corresponding to the aerodynamic configuration, each digital model corresponds to a mode, and aggregate the multiple modes to form an equipment model package of the advanced aerodynamic configuration aircraft. Combine the overall parameters and experience to conduct research and judgment on the characteristics of battlefield application, and preliminarily form a variety of battlefield usage methods.

[0058] The overall parameters include maximum take-off weight, fuselage internal volume, fuel weight, thrust-to-weight ratio, climb rate, take-off taxi distance, and landing taxi distance;

[0059] The shape parameters include fuselage length, wing span, aspect ratio, wing twist angle, leading edge sweep angle, and dihedral angle.

[0060] Based on the overall parameters and multiple groups of appearance parameters of the advanced aerodynamic layout aircraft, commercial drawing software is used to refine the multiple groups of conceptual models to form a series of corresponding digital models (the aerodynamic configuration of the advanced aerodynamic layout aircraft is correspondingly formed into digital models, and the number is not less than three, that is, a number of aerodynamic configurations A1, A2, A3, A4, A5..., and a number of digital models a1, a2, a3, a4, a5..., corresponding to mode 1, mode 2, mode 3, mode 4, mode 5... Several modes are aggregated to form the equipment model package of the advanced aerodynamic layout aircraft, refer to Table 1).

[0061] Table 1 Correspondence between aerodynamic configuration, numerical model and application mode

[0062] Aerodynamic configuration A1 A2 A3 … Digital Model a1 a2 a3 … Application Mode Mode 1 Mode 2 Mode 3 …

[0063] Combined with overall parameters (focusing on factors such as range, flight altitude, flight speed, portable reconnaissance load, portable weapon load, etc.) and experience, we have conducted research and analysis on its battlefield application characteristics, and initially formed multiple sets of unique battlefield usage methods (qualitative descriptions, including the time, altitude, speed, stealth, etc. of take-off and landing operations, cruise operations, penetration / strike operations, and reconnaissance operations). The various battlefield usage methods formed include forward reconnaissance, battlefield support, firepower strikes, and battle damage assessment.

[0064] Step (2): quantitatively describe the multiple battlefield usage modes to form multiple flight trajectories, screen the specific characteristic parameters of the advanced aerodynamic layout aircraft equipment for the flight trajectories in each battlefield usage mode, and select at most two of the multiple battlefield usage modes as a set of combat operation modes for the advanced aerodynamic layout aircraft.

[0065] In the process of constructing and forming the flight trajectory, full use is made of the constructed battlefield usage mode of advanced aerodynamic layout aircraft and the environment of specific future battlefields, and the battlefield functions of advanced aerodynamic layout aircraft are combined with the war scenario of the hostile imaginary country (i.e. the blue side) (i.e. geographical, climate, sea conditions, hydrological and other characteristics) to form a detailed flight strike profile (corresponding flight distance, speed characteristics, power system characteristics, reconnaissance payload start-up time, electronic countermeasures start-up time, strike trigger regulations, etc. at each flight altitude).

[0066] According to the flight trajectory in each battlefield usage mode, the specific characteristic parameters of the advanced aerodynamic layout aircraft equipment are screened, matched and simplified to specifically screen out multiple groups of combat application modes of the advanced aerodynamic layout aircraft (which can be used for the design of combat scenarios).

[0067] Based on the multiple combat application modes of the selected advanced aerodynamic layout aircraft, combined with the combat needs of the hostile hypothetical country (i.e., the blue side) (attack, patrol or reconnaissance, etc.), a new combat scenario is formed for the constructed specific future battlefield. Based on the characteristics of the new concept aerodynamic layout and its extensible battlefield functions (i.e., penetration methods, strike methods, reconnaissance means, etc.), the overall design of the red side's combat mission in the scenario of the specific future battlefield is completed (integration of reconnaissance, strike locations, action time, combat behavior triggers, information links, etc.).

[0068] Among them, the various flight trajectories formed include:

[0069] The use of advanced aircraft on the battlefield is divided into the following stages:

[0070] ① Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area phase flight - mission return phase flight - landing phase;

[0071] ② Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area - suicide attack or self-destruction;

[0072] The flight process of each stage is further segmented and linearized to form the corresponding flight trajectory.

[0073] Furthermore, for each flight trajectory in the battlefield usage mode, the specific characteristic parameters of the advanced aerodynamic layout aircraft equipment are screened to form multiple groups of combat operation modes of the advanced aerodynamic layout aircraft, as follows:

[0074] Determine the basic characteristic parameters of the advanced layout aircraft during each stage of flight, such as flight altitude, speed, fuel consumption, stealth characteristics RCS, and distance from the blue target. For reconnaissance-type combat missions, the characteristic parameters should also focus on the reconnaissance load characteristic parameters under the constraints of cabin volume and payload weight; for penetration and strike-type combat missions, the characteristic parameters should also focus on the weapon load characteristic parameters under the constraints of cabin volume and payload weight; for air support-type combat missions, the characteristic parameters should also focus on flight time, combat radius, fuel and other characteristic parameters.

[0075] In addition, assuming that the various aerodynamic configurations covered in the equipment model package are A1, A2, A3, A4, A5..., the design of the associators between the two aerodynamic configurations is completed to characterize the association between different aerodynamic configurations: A1-A2 aerodynamic configuration associator, representing that the two configurations A1-A2 can be switched during combat application; A3-A5 aerodynamic configuration associator, representing that the two configurations A3-A5 can be switched during combat application; and so on.

[0076] Step (3), preliminarily encapsulate multiple groups of combat application modes to form a combat equipment package.

[0077] Step (4) preliminarily forms a set of corresponding combat concepts and combat scenarios based on multiple groups of combat application modes of combat equipment packages.

[0078] Among them, the combat concept includes: background conditions, action style, winning strategy and basic connotations.

[0079] The designed combat concept should cover all typical flight states of the advanced aerodynamic layout aircraft, of which there should be no less than 3 typical flight states. For any typical flight state, there should be no less than 1 corresponding flight mode (aerodynamic configuration), such as Figure 2 shown.

[0080] The combat scenario is the concretization of the combat concept. That is, on the basis of the formed combat concept, a description of battlefield characteristics, a combat environment design, and force deployment are formed, and then displayed with the help of campaign-level simulation software and war game simulation software.

[0081] Step (5): According to the combat concept and combat scenario, the combat equipment package and the combat application mode are matched, and the battlefield positioning of the combat equipment package is refined. Specifically:

[0082] Based on the overall parameters, appearance parameters, and configured load conditions such as weapon load, reconnaissance load, fuel or batteries of the advanced layout aircraft, feasible combat actions and segmented flight routes are formed under the envisioned combat scenarios; when facing typical combat missions such as forward reconnaissance, battlefield support, firepower strike, maritime patrol, and combat damage assessment, the execution of one of them is determined based on the flight route characteristics and configured load conditions of the advanced layout aircraft under the current combat concepts and combat scenarios.

[0083] Step (6) brings the battlefield positioning of the refined combat equipment package into the combat concept formed in step (4), modifies the combat concept and combat scenario, and initially forms a set of combat simulation scenarios. Specifically:

[0084] Using war game simulation software and campaign-level simulation software, combined with battlefield feature description, combat environment design, and force deployment, battlefield site selection, force deployment design, combat regulations design, specific red and blue force action design, and total action time design are carried out on the map to complete the design of combat simulation scenarios;

[0085] Among them, in the combat simulation scenario, the combat action time accuracy of the combat equipment package formed by the advanced aerodynamic layout aircraft is no more than 10 1 Seconds level, the combat action time accuracy of the combat equipment package formed by other equipment is no higher than 10 2 Seconds.

[0086] Step (7): for the combat simulation scenario in step (6), use weapon simulation software to conduct a confrontation simulation between the red and blue systems, and conduct an effectiveness evaluation based on the combat simulation results.

[0087] Among them, the red and blue systems confrontation simulation is carried out, based on the combat equipment package, the flight profile formed according to the change of combat operation mode is designed according to the aerodynamic configuration associator, and finally {A i -T j}, as shown in Table 2;

[0088] Table 2 Characterization of flight profile using {Ai-Tj} linearization

[0089]

[0090] A1-T1 means that for the first flight state, the aerodynamic configuration used is A1, and the application time is T1; A3-T2 means that for the second flight state, the aerodynamic configuration used is A3, and the application time is T2; and so on, a complete flight profile is formed; conduct confrontation simulations between the red and blue systems to form multiple complete flight profiles.

[0091] During the performance evaluation process, the impact of multiple groups of flight trajectories is compared. Based on factors such as combat damage results and combat mission completion, the expert scoring method and TOPSIS method are used to conduct system contribution rate analysis on demand satisfaction and performance improvement, carry out performance evaluation, and form multiple groups of results.

[0092] In this embodiment, effectiveness evaluation is carried out according to the combat simulation results, as follows:

[0093] Construct an indicator system containing N indicators. First, multiple experts use the hierarchical analysis method to obtain the ranking vectors of the N indicators, and then use expert cluster analysis to obtain the weight of each indicator. According to the obtained indicator weights and ranking vectors, the performance evaluation is completed using the ADC performance evaluation method, TOPSIS method or weighted summation.

[0094] A preferred implementation is as follows:

[0095] The comprehensive assessment unit is responsible for inviting multiple experts to participate in the weight determination process. The participating experts are required to have a research background in combat effectiveness assessment technology, and the experts cannot be from the same unit or have a clear interest relationship with the comprehensive assessment unit (the inviting unit). The number of assessors should be around 10.

[0096] Among them, the calculation process of the hierarchical analysis method for a single expert is as follows: Figure 3 .

[0097] Experts fill in the evaluation index importance comparison table. For each level of indicators, fill in the evaluation index importance comparison table. Here, we take the four indicators of the same level, A, B, C, and D, as an example to illustrate the operation process. Compare the indicators two by two, and use the five importance ratings of equally important, slightly important, obviously important, strongly important, and extremely important to express the relative importance relationship between the two indicators. Fill in the importance comparison table accordingly, as shown in the table below. For the four indicators, a total of Comparison.

[0098] Table 3 illustrates this method.

[0099] Table 3 Comparison of the importance of the four indicators

[0100]

[0101] Taking the comparison between system construction capability and intelligent capability as an example, if the system construction capability is considered to be "obviously important" compared to the intelligent capability, then "<" will be used in the obviously important box to indicate their relative relationship, and other indicators are relatively similar.

[0102] The comprehensive assessment unit designs a judgment form for each level of indicators. Before filling in the form, the experts need to be informed of the operation process of the hierarchical analysis method and the precautions for filling in the form.

[0103] The calculation method for constructing the judgment matrix is:

[0104] After collecting the importance comparison and judgment table from the experts, the subsequent operations will be carried out by the comprehensive assessment unit. First, fill in the indicator comment set table, as shown in the table below. The comment set table corresponds to a 4*4 matrix, the diagonal elements of the matrix are 1, the product of the elements symmetrical to the diagonal is 1, and the values ​​of the non-diagonal elements are determined according to the importance comparison and judgment table. Each row of elements represents the importance of the "row label" of the row relative to the "column label". If the task achievement capability is "obviously important" relative to the system construction capability, then in the row representing the "task achievement capability", find the corresponding column of the "system construction capability" and fill in the value 5, corresponding to the 2nd row and the 1st column. Correspondingly, fill in 1 / 5 in the 1st row and the 2nd column symmetrical about the diagonal, and the filling process of other elements is similar. As shown in Table 4.

[0105] Table 4 Index review set

[0106] A-ability B-Capability C Features D-Capability A-ability 1 1 / 5 1 / 3 1 B-Capability 1 1 3 3 C Features 3 1 / 5 1 3 D-Capability 1 1 / 3 1 / 3 1

[0107] Therefore, the judgment matrix can be obtained from the indicator comment set table.

[0108] Solve the judgment matrix eigenvalues ​​and eigenvectors:

[0109] The square root method is used to find the maximum eigenvalue of the matrix, and the corresponding eigenvector is:

[0110] 1. Calculate the product of each row of the judgment matrix obtained from the indicator comment set table:

[0111]

[0112] where a ij is the element of the judgment matrix;

[0113] 2. Calculate the product M of each row element i The fourth root of:

[0114]

[0115] 3. Normalize and solve for the eigenvector:

[0116]

[0117] W i This is the desired eigenvector.

[0118] 4. Using the eigenvector, calculate the maximum eigenvalue:

[0119]

[0120] Where A is the judgment matrix obtained from the indicator comment set table, W is the feature vector W i The 4*1 matrix formed.

[0121] This eigenvector is called the ranking vector. The judgment matrix and ranking vector are the basic parameters for experts to participate in the expert weighting algorithm.

[0122] Consistency judgment:

[0123] The purpose of consistency judgment is to avoid logical errors such as "A is more important than B, B is more important than C, and C is more important than A" in the process of comparing relative importance.

[0124] The consistency index is expressed as CI. Definition

[0125]

[0126] Where n is the number of indicators. When the order of the judgment matrix is ​​greater than 2, the ratio of the consistency index CI of the judgment matrix to the average random consistency index RI of the same order is called the random consistency ratio of the judgment matrix, denoted as CR. When CR = CI / RI < 0.1, the judgment matrix has satisfactory consistency, otherwise the judgment matrix needs to be adjusted.

[0127] Table 5 Average random consistency index of 1-9 order matrices

[0128] Degree 1 2 3 4 5 6 7 8 9 RI 0.00 0.00 0.58 0.90 1.12 1.24 1.32 1.41 1.45

[0129] In this example, when calculating CI, if CR < 0.1 is obtained, the consistency of the judgment matrix is ​​acceptable. Generally, experts have a clear understanding of the relative importance of each indicator, and logical errors are less likely to occur when the number of indicators is small. When consistency is not met, it is necessary to return to modify the comparison judgment table of evaluation indicator importance.

[0130] Thus, we can obtain the ranking vectors of the four indicators: A capability, B capability, C characteristics, and D capability.

[0131] Calculation method combined with expert empowerment process:

[0132] Empowering experts combines two approaches:

[0133] First, weights are assigned based on the consistency of the judgment matrix given by the experts. The better the consistency of the judgment matrix, the clearer the logic of the experts, and the greater the weight of the corresponding experts.

[0134] The second is to cluster and weight the expert evaluation results based on the majority principle. The more experts’ ranking plans are similar, the higher the degree of consensus among the experts, the more accurate the corresponding evaluation, and the greater the weight of such experts.

[0135] The expert weight is determined by a method that combines weighting based on the consistency of the judgment matrix and weighting based on expert clustering. The specific method is to use a certain algorithm to classify (cluster) experts according to the results of the expert ranking vector. The ranking schemes of experts in the same category are similar and the same inter-class weights are assigned. At the same time, different intra-class weights are assigned to experts in the same category according to the consistency of their respective judgment matrices. The expert weight (intermediate quantity) can be obtained from the inter-class weight and the intra-class weight, and the final indicator weight can be determined from the expert weight. The process of expert weighting is as follows: Figure 4 .

[0136] Similarly, the same process can be used for each level of indicators under the four first-level indicators of A capability, B capability, C feature, and D capability. After solving the weights of each level of indicators, select the TOPSIS method, ADC performance evaluation method, or weighted summation to complete the performance evaluation calculation.

[0137] Step (8), comparing the multiple groups of combat effectiveness evaluation results formed by the multiple groups of flight trajectories, and selecting the combat application mode of the advanced aerodynamic layout aircraft with the best effectiveness evaluation value.

[0138] Step (9), based on the selected combat operation mode, change the number and position deployment of the Red Army's troop units, design battlefield actions of multiple groups of Red Army equipment units, form multiple sets of combat simulation scenarios and conduct large-sample simulations, and select the combat simulation scenario corresponding to the best performance evaluation result as the final combat simulation scenario. Specifically:

[0139] The combat simulation scenario is completed using commercial simulation software. On the battlefield map, battlefield site selection, force deployment design, combat rules design, and specific force action design for both the red and blue sides are completed to form an executable program for scenario simulation.

[0140] Carry out large sample simulation based on multiple combat simulation scenarios in step (9), as follows:

[0141] Change the details of the force deployment design in the combat simulation scenario, including the number of equipment, location, and action sequence, to form several sets of combat simulation scenarios. For the multiple sets of combat simulation scenarios formed, use the expert scoring method and TOPSIS method to analyze the system contribution rate of demand satisfaction and efficiency improvement, and carry out a series of simulations. Then, according to the statistical efficiency evaluation results, select the combat simulation scenario corresponding to the best result, that is, determine the final combat simulation scenario.

[0142] Step (10): for the final combat simulation scenario, determine whether the aerodynamic configuration and its corresponding mode in the equipment model package are feasible based on the climb rate limit, thermal protection limit, usage cost and stealth limit. If feasible, obtain the final equipment model package; if not feasible, proceed to step (2).

[0143] The present invention investigates and analyzes the equipment characteristics of advanced aerodynamic layout aircraft, and uses the positioning and simulation results of advanced aerodynamic layout aircraft in the combat concept to extract the characteristic elements of the equipment unit of the advanced aerodynamic layout aircraft. The characteristics of the equipment unit of the advanced aerodynamic layout aircraft and the aerodynamic layout\overall characteristics of the new concept equipment are combined for iterative design, which effectively supports the aerodynamic parameters\overall layout design of the new concept equipment.

[0144] Compared with the fine-grained packaging method for advanced aerodynamic layout aircraft, the granularity of the original aircraft equipment model library is mostly coarse, and the simulation results cannot have a significant impact on the overall parameters and indicators of the new concept equipment. The present invention creatively utilizes the fine-grained packaging method and combines it with the aerodynamic layout of advanced aerodynamic layout aircraft\the overall design of the aircraft. By adopting the method of designing, simulating, and correcting at the same time, the overall design of advanced aerodynamic layout aircraft, combat simulation deduction, and the preparation of the model library of advanced aerodynamic layout aircraft are organically tightly coupled, which meets the urgent engineering needs of organically integrating the overall\aerodynamic design of the aircraft, the equipment model library of the aircraft, combat simulation, combat concepts, and combat scenarios to the greatest extent.

[0145] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0146] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A fine-grained model packaging method for advanced aerodynamic layout aircraft, characterized in that: The following steps are involved: (1) An advanced aerodynamic configuration aircraft is selected as the target object, and its overall parameters and multiple groups of appearance parameters are initially formed. The appearance parameters are used to establish a number of digital models corresponding to the aerodynamic configurations. Each digital model corresponds to a mode. Several modes are aggregated to form an equipment model package of the advanced aerodynamic configuration aircraft. Combined with the overall parameters and the characteristics of battlefield applications, a variety of battlefield usage modes are initially formed; (2) for each battlefield use mode, screening specific characteristic parameters of the advanced aerodynamic configuration aircraft equipment, and selecting at most two of the multiple battlefield use modes as a set of combat operation modes for the advanced aerodynamic configuration aircraft equipment; (3) Preliminarily encapsulating multiple groups of combat operation modes to form combat equipment packages; (4) Preliminarily form a set of corresponding combat concepts and combat scenarios based on multiple sets of combat operation modes; (5) According to the combat concept and combat scenario, the combat equipment package and the combat application mode are matched, and the battlefield positioning of the combat equipment package is refined; (6) Bringing the battlefield positioning of the refined combat equipment package into the combat concept formed in step (4), revising the combat concept and combat scenario, and initially forming a set of combat simulation scenarios; (7) Conducting a combat simulation of the Red and Blue systems in response to the combat simulation scenario in step (6), and conducting an effectiveness evaluation based on the combat simulation results; (8) comparing multiple groups of combat effectiveness evaluation results formed by multiple groups of flight trajectories, and selecting the combat operation mode of the advanced aerodynamic layout aircraft with the best effectiveness evaluation value; (9) Based on the selected combat operation mode, the number and position deployment of the Red Army’s troop units are changed, and battlefield operations of multiple groups of Red Army equipment units are designed to form multiple sets of combat simulation scenarios and conduct large-sample simulations. The combat simulation scenario corresponding to the best effectiveness evaluation result is selected as the final combat simulation scenario; (10) For the final combat simulation scenario, determine whether the aerodynamic configuration and its corresponding mode in the equipment model package are feasible based on the climb rate limit, thermal protection limit, usage cost and stealth limit. If feasible, obtain the final equipment model package. If not feasible, proceed to step (2).

2. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 1 is characterized in that: The overall parameters in step (1) include maximum take-off weight, fuselage internal volume, fuel weight, thrust-to-weight ratio, climb rate, take-off taxi distance, and landing taxi distance; The shape parameters include fuselage length, wing span, aspect ratio, wing twist angle, leading edge sweep angle, and dihedral angle; The various battlefield usage methods formed include forward reconnaissance, battlefield support, firepower strike, and damage assessment.

3. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 2 is characterized in that: The flight trajectory in the battlefield usage mode in step (2) is specifically: Based on the quantitative description of the various battlefield usage methods formed, the usage of advanced layout aircraft on the battlefield is divided into the following stages: ① Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area phase flight - mission return phase flight - landing phase; ② Take-off phase flight - flight to the mission area phase flight - mission execution phase flight in the mission area - suicide attack or self-destruction; The flight process of each stage is further segmented and linearized to form the corresponding flight trajectory.

4. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 3 is characterized in that: The specific characteristic parameters of the advanced aerodynamic layout aircraft equipment are screened in step (2), as follows: Determine the flight altitude, speed, fuel consumption, stealth characteristics RCS, and distance to the blue target of the advanced layout aircraft during each stage of flight; for reconnaissance-type combat missions, the characteristic parameters also include the reconnaissance load characteristic parameters under the constraints of cabin volume and payload weight; for penetration and strike-type combat missions, the characteristic parameters also include the weapon load characteristic parameters under the constraints of cabin volume and payload weight; for air support-type combat missions, the characteristic parameters also include flight time, combat radius, and fuel.

5. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 4 is characterized in that: Step (2) further includes: Assuming that the various aerodynamic configurations covered in the equipment model package are A1, A2, A3, A4, A5..., complete the design of the associators between the two aerodynamic configurations to characterize the association between different aerodynamic configurations: A1-A2 aerodynamic configuration associator, representing that the two configurations A1-A2 can be switched during combat application; A3-A5 aerodynamic configuration associator, representing that the two configurations A3-A5 can be switched during combat application; and so on.

6. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 5 is characterized in that: Step (4) initially forms a set of corresponding combat concepts and combat scenarios, as follows: The operational concept includes: background conditions, action style, winning strategy, and basic connotations; The combat scenario is the concretization of the combat concept. That is, on the basis of the formed combat concept, a description of battlefield characteristics, a combat environment design, and force deployment are formed, and then displayed with the help of campaign-level simulation software and war game simulation software.

7. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 6 is characterized in that: In step (5), according to the combat concept and combat scenario, the combat equipment package and the combat application mode are matched, and the battlefield positioning of the combat equipment package is refined, as follows: Based on the overall parameters, appearance parameters and configured load conditions of the advanced layout aircraft, feasible combat actions and segmented flight routes are formed under the envisioned combat scenarios; when facing typical combat missions, one of the executions is determined based on the flight route characteristics and configured load conditions of the advanced layout aircraft under the current combat concept and combat scenario; wherein the typical combat missions include forward reconnaissance, battlefield support, firepower strike, maritime patrol, and battle damage assessment.

8. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 7 is characterized in that: In step (6), the operational concepts and operational scenarios are modified to initially form a set of operational simulation scenarios, which are as follows: Combined with battlefield feature description, combat environment design, and force deployment, battlefield site selection, force deployment design, combat rules design, specific red and blue force action design, and total action time design are carried out on the map to complete the design of combat simulation scenarios; Among them, in the combat simulation scenario, the combat action time accuracy of the combat equipment package formed by the advanced aerodynamic layout aircraft is no more than 10 1 Seconds, the combat action time accuracy of the combat equipment package formed by other equipment is no higher than 10 2 Seconds.

9. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 8, characterized in that: Step (7) of the red and blue systems confrontation simulation is carried out based on the combat equipment package, and the flight profile formed according to the change of the combat operation mode is designed according to the aerodynamic configuration associator, and finally {A i -T j }; the flight profile form is specifically: {A1-T1,A3-T2,A4-T3,A2-T4,……} A1-T1 means that for the first flight state, the aerodynamic configuration used is A1 and the application time is T1; A3-T2 means that for the second flight state, the aerodynamic configuration used is A3 and the application time is T2; and so on, a complete flight profile is formed; the red and blue system confrontation simulation is carried out to form multiple complete flight profiles; The effectiveness evaluation is carried out according to the combat simulation results, as follows: Construct an indicator system containing N indicators, use the hierarchical analysis method to obtain the ranking vector of N indicators, and then use cluster analysis to obtain the weight of each indicator. According to the obtained indicator weights and ranking vectors, use the ADC performance evaluation method, TOPSIS method or weighted summation to complete the performance evaluation.

10. The fine-grained model packaging method for advanced aerodynamic layout aircraft according to claim 9, characterized in that: The combat simulation scenario formed in step (9) is specifically: On the battlefield map, complete battlefield site selection, force deployment design, combat rules design, and specific force action design for both the red and blue sides, forming an executable program for scenario simulation; Carry out large sample simulation based on multiple combat simulation scenarios in step (9), as follows: Changes are made to the details of the force deployment design in combat simulation scenarios, including changes to the number, location, and order of action of equipment, to form several sets of combat simulation scenarios. For the multiple sets of combat simulation scenarios formed, the expert scoring method and TOPSIS method are used to analyze the system contribution rate of demand satisfaction and efficiency improvement, and a series of deductions and simulations are carried out.

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