CN118004441A - Brake defect analysis and result evaluation method and device based on flight comment - Google Patents

Abstract

The invention provides a brake defect analysis and result evaluation method and device based on flight comments, wherein the method comprises the following steps: determining a brake association problem according to the flight comment information, classifying, and carrying out problem cause and defect analysis to obtain equipment and indexes for solving the brake association problem; developing a verification task scene design of the brake to obtain a verification scene; under the verification scene, taking the progressive property and the comprehensiveness of defect verification into consideration, forming a four-dimensional verification method; and performing verification to form aircraft defect verification conclusion and design improvement suggestion. And establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion, and determining the result grade of each element result grade for indicating the flight operation of the pilot. The method has strong operability, can simply, accurately and closely correlate flight comment information to the analysis of the brake defects and the prediction of the results of the aircraft, is beneficial to improving the flight test efficiency and the flight safety of the aircraft, and is used for the horizontal improvement of the aircraft design and the combat of armies.

Description

Brake defect analysis and result evaluation method and device based on flight comment

Technical Field

The invention relates to the field of aircraft defect analysis, in particular to a brake defect analysis and result evaluation method and device based on flight comments.

Background

After the flight mission of the pilot is finished, comprehensive comments on the use feelings of various systems, man-machine (software and hardware) coordination, man-ring interaction, man-dress combination and the like of the aircraft are required, and the comprehensive comments are collectively called post-flight comment information. The post-flight comment information of the pilot relates to various contents such as a software and hardware interface, functional performance, artificial efficiency and the like of the aircraft, can directly and comprehensively reflect various problems existing or potential in the aircraft, and has great significance on test flight efficiency and flight safety.

However, the post-flight comment information is qualitative and fuzzy flight comment information, such as too strong pause and feel when stepping on a brake, larger power consumption when manipulating a handle, and the like, and the situation that the airborne equipment involved in the flight comment information is too much, the airborne equipment which needs to be specifically adjusted cannot be positioned, or the problem defect that the airborne equipment needs to be adjusted cannot be directly determined, or the problem defect cannot be reflected by performance function parameters, is caused, so that the utilization rate of the flight comment information is low, the defect is affected, the flight efficiency is directly affected, the workload of a pilot is increased, the problem of human errors is caused, and even the flight safety accident is possibly caused.

How to trace and locate from qualitative and fuzzy flight comment information to the defect analysis and the result evaluation of an airplane specific system at present, and related researches are almost blank.

Disclosure of Invention

The invention aims to solve the technical problems that: the method and the device for analyzing the brake defects and evaluating the results based on the flight comments are provided, the post-flight comment information of the pilot is fully mined, the qualitative information is traced back to the system defect analysis, the defect result evaluation and the follow-up improvement suggestion are given, the flight test safety and efficiency of the aircraft are ensured, the design level of the aircraft is improved, and the service troops are used for fighting.

The technical scheme of the invention is as follows: the first aspect of the invention provides a brake defect analysis method based on flight comments, which comprises the following steps:

S101, determining brake association problems according to flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

S102, according to the characteristics of the equipment and the airplane fight use task, a verification task scene design for developing braking based on the combination of personnel and equipment is obtained;

S103, under a verification scene, taking the progressive property and the comprehensiveness of defect verification into consideration to form a four-dimensional verification method;

S104, performing verification by adopting a four-dimensional verification method to obtain a verification result, and comparing and analyzing the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

Optionally, the types of the brake related problems include: brake operability, brake failure warning, brake temperature, and brake noise.

Optionally, the task scenario design element includes: the device features of the braking system in the transverse dimension, the aircraft combat mission and the mission use requirements, and the man-machine combination in the longitudinal dimension relates to three layers of pilot operation, aircraft equipment and mission environment.

Optionally, the four-dimensional verification method includes: on-board parameter measurement, simulator test verification, ground sliding operation verification and air test flight verification are combined with qualitative and quantitative indexes to develop special and combined test flight verification.

Optionally, the verified pedal usability evaluation index includes pedal size rationality, pedal space rationality, pedal force suitability, seat and pedal matchability.

Optionally, the validated results are compared with similar models, where similar models refer to a series of modified aircraft with similar mission and mission profiles, similar equipment platform structures.

The second aspect of the invention provides a brake defect consequence evaluation method based on flight comments, which comprises the following steps:

S105, establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

wherein the aircraft defect verification conclusion is reached using the method of any one of the first aspects;

S106, determining the severity and possibility of the defect result for each element in the defect result evaluation factor set;

And S107, determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set, wherein the result grade is used for indicating the flight operation of the pilot.

Optionally, the determining the defect result probability for each element in the defect result evaluation factor set includes:

and determining the probability of the defect result according to all the associated historical flight comment information of each element in the defect result evaluation factor set.

Optionally, the defect result evaluation factor set includes: the impact of equipment and metrics on the situational awareness, workload, functional implementation, performance level, and ergonomic performance of pilot driving operations.

Optionally, specific instructions and handling advice are provided from dimensions affecting flight safety, aircraft systems, pilot operation, for different levels of defect consequences determined.

A third aspect of the present invention provides a brake defect analysis device based on flight comments, including:

The problem and defect analysis unit is used for determining brake association problems according to the flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

The verification scene design unit is used for obtaining a verification scene based on the verification task scene design of combining the equipment and the airplane with the airplane combat use task and carrying out braking based on the personnel;

The verification method selection unit is used for considering the progressive property and the comprehensiveness of defect verification under a verification scene to form a four-dimensional verification method;

And the verification result comparison unit adopts a four-dimensional verification method to implement verification to obtain a verification result, and compares and analyzes the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

According to a fourth aspect of the present invention, there is provided an apparatus for evaluating a brake defect consequence based on an aircraft review, comprising:

The factor set acquisition unit is used for establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

Wherein the aircraft defect verification conclusion is obtained by the method according to any one of claims 1-3;

A result analysis unit for determining a severity and a likelihood of a defect result for each element in the defect result evaluation factor set;

The result grade obtaining unit is used for determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set; the outcome level is used to indicate pilot flight operations.

The application has the beneficial effects that: 1) Subjective comment information of the pilot is fully utilized and submerged, and the flight test efficiency is improved;

2) Determining a system typical problem according to the flight comment information, carrying out problem cause and defect analysis from four dimensions of 'system-function-equipment-index', and associating aircraft defects to realize the traceability from subjective qualitative information to objective defect analysis;

3) Aiming at equipment use and combat demands, a verification task scene is designed based on a man-machine combination angle, a four-dimensional verification method is formed, improvement suggestions are provided, and the design level of an airplane is effectively improved;

4) The verification planning and implementation are carried out by combining specific test subjects, and verification results are compared and analyzed with similar machine types, so that the effectiveness and operability of the method are verified;

5) The defect result evaluation grade is established, and the severity and possibility dual-grade analysis of the defect result is convenient for pilots to sense and avoid subsequent flight risks, so that the flight safety is better ensured, and the service troops are used for combat.

Drawings

FIG. 1 is a schematic flow chart of aircraft defect analysis and consequences evaluation based on flight comments.

Detailed Description

The application is described in further detail below with reference to the drawings of embodiments.

FIG. 1 is a schematic flow chart of brake defect analysis and outcome evaluation based on flight comments in accordance with an embodiment of the present invention. The method comprises the following steps as shown in fig. 1:

S101, determining brake association problems according to flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

S102, according to the characteristics of the equipment and the airplane fight use task, a verification task scene design for developing braking based on the combination of personnel and equipment is obtained;

S103, under a verification scene, taking the progressive property and the comprehensiveness of defect verification into consideration to form a four-dimensional verification method;

S104, performing verification by adopting a four-dimensional verification method to obtain a verification result, and comparing and analyzing the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

S105, establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

S106, determining the severity and the probability level of the defect result for each element in the defect result evaluation factor set;

And S107, determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set, wherein the result grade is used for indicating the flight operation of the pilot.

The invention is described by taking a certain airplane brake system in a pilot flight stage as an example, and specifically comprises the following steps:

Step 1: typical problem cause and defect analysis

The method is characterized in that after multiple test flights, multiple post-voyage comments can be obtained, 34 problems related to the braking system, which are mentioned in the multiple post-voyage comments of the aircraft unit, are included, the comment content of a pilot on the braking system is analyzed, the problems of the braking system are classified, and the method can be particularly divided into 4 major categories, namely, brake operability, brake failure and alarm, brake temperature and brake noise.

And if the performance index parameters are normal, the defect problem cannot be directly or intuitively determined.

For the brake association problem related to the function type with normal performance index, the invention develops problem cause and defect analysis from four dimensions of system-function-equipment-index.

For example, from the aspect of system dimension, other systems involved in post-voyage comments can be subjected to relevance analysis with the braking system, the braking system has stronger independence, and if no strong relevance system exists, the functional dimension is entered, and the defect of searching the braking system is considered.

The problem that pilots reflect most frequently and have the greatest influence on the current brake use is the problem of brake operability, namely, the brake is difficult to control accurately, the sliding speed is difficult to grasp accurately, the pilot is easy to feel a jerky feeling in the braking process, and the pilot feels uncomfortable.

By researching the functional characteristics of the on-board equipment or products related to the brake operability problem and combining the use time and scene of pilots, key equipment corresponding to the brake system operability function is analyzed from four dimensions of the system, the function, the equipment and the index, the adaptability key index is used by the analysis equipment, and the brake use defect is associated.

The brake design and the use characteristics are fully analyzed, and the reasons such as a relation curve of brake pedal travel and brake pressure, brake pedal force, pedal size and space position are found to influence the brake operation difficulty, wherein the key equipment is a brake pedal. And analyzing and screening the defects related to the use of the brake pedal through the problem reasons, and establishing a brake pedal usability evaluation index.

Step 2: verification of task scene design

Based on the combination of personnel and equipment, three layers such as pilot operation, aircraft equipment, task environment and the like are started, pilot sample selection (default of the aircraft fixed unit), braking mode (quick/soft), braking mode (normal/backup/emergency), sliding speed (30 kn/60kn/100 kn) and airport runway environment (dry/wet runway) are determined as key influence factors, and 36 verification scenes with different dimensions can be designed and constructed according to the arrangement and combination of the key influence factors.

Step 3: verification method selection

Based on the coincidence verification method, the progressive and comprehensive defect verification is analyzed according to the characteristics of the test flight stage, so that a four-dimensional verification method is formed, and the four-dimensional verification method specifically comprises on-board parameter measurement, simulator test verification, ground operation verification and aerial test flight verification.

Aiming at the brake operability defect of the model machine, the on-board index measurement, the subjective evaluation of ground operation (evaluation elements comprise pedal size rationality, pedal space rationality, pedal force suitability degree and seat and pedal matching), the brake parameter measurement (comprising brake pressure, brake pedal stroke, wheel speed and airplane ground speed) and the subjective evaluation of a pilot (combining daily flight verification and brake special taxiing verification) are determined by combining pedal usability evaluation indexes.

Step 4: verification implementation and result analysis

The comprehensive evaluation system is formed by integrating task coordination before verification implementation, ground verification and air flight verification, taking personnel samples such as a flight unit, a flight test engineer and the like into consideration, and performing ground and air test evaluation by combining specific flight test tasks.

And (3) verifying the preliminary comment result on the machine, comparing the preliminary comment result with similar machine types and historical machine types, comparing the pedal length with the pedal initial angle, and verifying the validity of the result.

Step 5: analysis and evaluation of defect consequences

The human-computer combined concept is used, a result evaluation factor set is established from the aspects of situation awareness, workload, function realization, performance level, work efficiency performance and the like, defect result severity evaluation grades are given, and the defect result severity evaluation grades correspond to 5 grades, 4 grades, 3 grades, 2 grades and 1 grade respectively, namely, are not serious, are general, are serious and are very serious, and the adaptability improvement is needed by combining the feedback of a pilot in a flight test stage and the condition of airplane equipment.

The occurrence of defects is generally closely related to pilot use, and the more occasions and scenes are used, the more frequent the use is, the higher the probability of occurrence of defects is. Considering the severity of the consequences of the defect (very severe, relatively severe, general, less severe, corresponding to indices 1-5) and the likelihood of occurrence of the consequences (frequent, likely, occasional, rare, very few, corresponding to indices 1-5), five classes, class i, class ii, class iii, class iv, class v, corresponding to indices 1-6, 7-10, 11-15, 16-19, 20-25 were evaluated based on the expansively established outcome index matrix, corresponding to the consequences, specific instructions were given for the different classes from affecting flight safety, aircraft system, pilot operation multidimensional, and whether to form a defect report or problem ticket, see in particular table 1 below.

TABLE 1

In a second aspect, an embodiment of the invention provides a brake defect analysis and result evaluation device based on flight comments. Wherein the brake defect analysis device includes: the problem and defect analysis unit is used for determining brake association problems according to the flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

The verification scene design unit is used for obtaining a verification scene based on the verification task scene design of combining the equipment and the airplane with the airplane combat use task and carrying out braking based on the personnel;

The verification method selection unit is used for considering the progressive property and the comprehensiveness of defect verification under a verification scene to form a four-dimensional verification method;

And the verification result comparison unit adopts a four-dimensional verification method to implement verification to obtain a verification result, and compares and analyzes the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

The brake defect result evaluation device comprises:

The factor set acquisition unit is used for establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

A result analysis unit for determining a severity and a likelihood of a defect result for each element in the defect result evaluation factor set;

The result grade obtaining unit is used for determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set; the outcome level is used to indicate pilot flight operations.

Claims (10)

1. The brake defect analysis method based on the flight comment is characterized by comprising the following steps of:

S101, determining brake association problems according to flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

S102, according to the characteristics of the equipment and the airplane fight use task, a verification task scene design for developing braking based on the combination of personnel and equipment is obtained;

S103, under a verification scene, taking the progressive property and the comprehensiveness of defect verification into consideration to form a four-dimensional verification method;

S104, performing verification by adopting a four-dimensional verification method to obtain a verification result, and comparing and analyzing the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

2. The method of claim 1, wherein the type of brake related problem comprises: brake operability, brake failure warning, brake temperature, and brake noise.

3. The method of claim 1, wherein the task scenario design element comprises: the device features of the braking system in the transverse dimension, the aircraft combat mission and the mission use requirements, and the man-machine combination in the longitudinal dimension relates to three layers of pilot operation, aircraft equipment and mission environment.

4. The method of claim 1, wherein the verified pedal usability assessment criteria include pedal size rationality, pedal space rationality, pedal force suitability, seat to pedal fit.

5. The method for evaluating the brake defect consequences based on the flight comments is characterized by comprising the following steps of:

S105, establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

wherein the aircraft defect verification conclusion is obtained by the method according to any one of claims 1-4;

S106, determining the severity and possibility of the defect result for each element in the defect result evaluation factor set;

And S107, determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set, wherein the result grade is used for indicating the flight operation of the pilot.

6. The method of claim 5, wherein said determining the likelihood of a defect outcome for each element in the set of defect outcome evaluation factors comprises:

and determining the probability of the defect result according to all the associated historical flight comment information of each element in the defect result evaluation factor set.

7. The method of claim 5, wherein the set of defect outcome evaluation factors comprises: the impact of equipment and metrics on the situational awareness, workload, functional implementation, performance level, and ergonomic performance of pilot driving operations.

8. The method of claim 5, wherein specific instructions and handling advice are provided from dimensions affecting flight safety, aircraft systems, pilot operation, for different determined levels of defect consequences.

9. Brake defect analysis device based on flight commentary, characterized by comprising:

The problem and defect analysis unit is used for determining brake association problems according to the flight comment information, classifying all the brake association problems according to functions, and carrying out problem cause and defect analysis from four dimensions of a system, a function, equipment and an index for the brake association problems related to the function type with normal performance indexes to obtain equipment and indexes for solving the brake association problems;

The verification scene design unit is used for obtaining a verification scene based on the verification task scene design of combining the equipment and the airplane with the airplane combat use task and carrying out braking based on the personnel;

The verification method selection unit is used for considering the progressive property and the comprehensiveness of defect verification under a verification scene to form a four-dimensional verification method;

And the verification result comparison unit adopts a four-dimensional verification method to implement verification to obtain a verification result, and compares and analyzes the verification result with a similar model to form an aircraft defect verification conclusion and a design improvement suggestion.

10. Brake defect result evaluation device based on flight commentary, characterized by comprising:

The factor set acquisition unit is used for establishing a defect result evaluation factor set according to equipment and indexes in the aircraft defect verification conclusion;

Wherein the aircraft defect verification conclusion is obtained by the method according to any one of claims 1-3;

A result analysis unit for determining a severity and a likelihood of a defect result for each element in the defect result evaluation factor set;

The result grade obtaining unit is used for determining the result grade of each element according to the severity and possibility of the defect result of each element in the defect result evaluation factor set; the outcome level is used to indicate pilot flight operations.