CN112862328B - Method for evaluating external field-level repairability maintenance parameters of airplane - Google Patents
Method for evaluating external field-level repairability maintenance parameters of airplane Download PDFInfo
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- CN112862328B CN112862328B CN202110189779.6A CN202110189779A CN112862328B CN 112862328 B CN112862328 B CN 112862328B CN 202110189779 A CN202110189779 A CN 202110189779A CN 112862328 B CN112862328 B CN 112862328B
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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q10/20—Administration of product repair or maintenance
Abstract
A method for evaluating the field-level repairability maintenance parameters of an airplane comprises the steps of collecting the service life cycle of the airplane and the parameter data of each field replaceable unit, establishing a field-level repairability maintenance operation model of the field replaceable unit of the airplane according to the field-level repairability maintenance operation of the field replaceable unit of the airplane, and training to obtain the field-level repairability maintenance average repair time of the field replaceable unit of the airplane; and establishing an aircraft outfield-level repairability maintenance total time calculation model through the outfield-level repairability maintenance average repair time of the aircraft outfield replaceable unit, and finally inputting the obtained parameter data into the aircraft outfield-level repairability maintenance total time calculation model to obtain the aircraft outfield-level repairability maintenance total time so as to judge the outfield-level repairability maintenance cost and further adjust the reliability index of the aircraft, so that the evaluation on the aircraft outfield-level repairability maintenance parameters is realized, and the comprehensiveness of the aircraft maintainability evaluation are effectively improved.
Description
Technical Field
The invention relates to the technical field of aviation general quality characteristic design, in particular to an aircraft outfield-level repairability maintenance parameter evaluation method.
Background
At present, parameters related To the repairability Repair Time of the aircraft outfield-level repairability assessment mainly comprise Mean Time To Repair (MTTR) and Maximum Repair Time To Repair (Tmax xct), and reference standards mainly comprise GJB/Z57 Repair distribution and prediction handbook and GJB/Z145 Repair modeling guide. However, the mean repair time (MTTR) and the maximum repair time (tmax ct) can only reflect the speed of the repair speed of the aircraft after the fault occurs, the total time consumed by the field-level repairability repair of the aircraft cannot be obtained, and the frequency of the field-level repairability repair of the aircraft cannot be controlled, so that the maintainability assessment is not comprehensive and sufficient.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method for evaluating an outfield-level repairability maintenance parameter of an aircraft, so as to solve the above problems in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme:
an aircraft outfield-level repairability maintenance parameter evaluation method comprises the following specific steps:
1) Collecting the life cycle of the airplane and the operation ratio, fault rate and other parameter data of each outfield replaceable unit
The life cycle of the airplane is obtained according to the requirements of the overall technical scheme of the airplane;
the operating ratio of the aircraft outfield replaceable unit is determined according to the operating time of the aircraft outfield replaceable unit at each flight hour of the aircraft;
calculating the failure rate of the replaceable unit of the external field of the airplane according to the reliability prediction result MTBF of the replaceable unit of the external field of the airplane by taking the reciprocal;
2) Establishing an external field grade repairability maintenance operation model of replaceable unit of an external field of an airplane
The outfield-level repairability maintenance operation of the replaceable unit of the outfield of the airplane comprises preparation, fault isolation, decomposition, replacement, assembly, adjustment, inspection and starting;
preparation time T 1 : the time it takes to complete equipment preparation before fault isolation occurs;
time of fault isolation T 2 : time required to isolate the fault to proceed with the repair level;
decomposition time T 3 : time required to disassemble the apparatus to reach the outfield replaceable unit determined during fault isolation;
time of replacement T 4 : the time required to replace a failed or suspected failed line replaceable unit;
time of assembly T 5 : time required to reassemble the device after the field replaceable unit has been replaced;
adjusting the time T 6 : time required to adjust the system or the outfield replaceable unit after troubleshooting;
test time T 7 : checking whether the fault is eliminated and whether the system runs for the required time;
starting time T 8 : the time required to restore the system to the operational state prior to the occurrence of the fault immediately after verifying that the fault has been cleared and that the system is operational;
outfield-level reparative repair mean repair time for LRU of aircraft
The sum of the time of each basic maintenance operation is as follows:
establishing an external field grade repairability maintenance operation model of the external field replaceable unit of the airplane according to external field grade repairability maintenance operation of the external field replaceable unit of the airplane;
3) Establishing a model for calculating total repair time of the outfield grade of the airplane
Collecting various outfield-level repairability maintenance operation time, training the outfield-level repairability maintenance operation model of the replaceable unit of the aircraft outfield established in the step 2) to obtain the average repair time of the outfield-level repairability maintenance of the replaceable unit of the aircraft outfield
The obtained mean repair time of the outfield-level repairability maintenance of the replaceable unit of the outfield of the airplane
Substituting the calculated time into a formula (2) to establish a total time calculation model of the outer field grade repairability maintenance of the airplane;
in the formula (2), M trt -total time for outfield-level reparative maintenance of the aircraft;
l-total life of the aircraft;
D i -run ratio of LRU of i-th kind;
λ i -the failure rate of the i-th LRU,
Q i -number of LRUs of the i-th kind;
4) Assessing total time for field-level restorative maintenance of an aircraft
Inputting the parameter data obtained in the step 1) into the total time calculation model of the repair of the outfield grade of the airplane established in the step 3), so as to obtain the total time of the repair of the repairability of the outfield grade of the airplane, judging whether the total time base of the repair of the outfield grade of the airplane is in an acceptable range or not according to the total time base of the repair of the outfield grade of the airplane, and further adjusting the reliability index-average fault interval flight hour of the airplane, thereby realizing the evaluation of the repair parameters of the repairability of the outfield grade of the airplane.
Has the beneficial effects that: the method brings the Total Time TRT (Total Repair Time) of the outfield-level repairability maintenance of the airplane into a maintainability assessment parameter system, further establishes a balance relation between the maintainability index of the airplane and the reliability and economic index, and assists a user to judge whether the outfield-level repairability maintenance cost is in an acceptable range through the parameter, so that the reliability index-mean fault interval flight Time (MFHBF) of the airplane is adjusted, the comprehensiveness and comprehensiveness of the maintainability assessment of the airplane are effectively improved, and the maintainability, the reliability and the economic efficiency of the airplane are favorably coordinated with one another.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
An aircraft outfield-level repairability maintenance parameter evaluation method comprises the following specific steps:
1) Collecting data of parameters such as life cycle of the aircraft and operation ratio and fault rate of each Line Replaceable Unit (LRU)
The life cycle of the airplane is obtained according to the requirements of the overall technical scheme of the airplane;
the running ratio of the LRU of the airplane is determined according to the running time of the LRU per flight hour of the airplane;
the fault rate of the LRU of the airplane is obtained by calculating the reciprocal of the reliability prediction result MTBF of the LRU of the airplane;
2) Establishing an aircraft (LRU) outfield-level repairability maintenance operation model
The outfield-level repairability maintenance operation of the LRU of the airplane comprises preparation, fault isolation, disassembly, replacement, assembly, adjustment, inspection and starting;
preparation time T 1 : the time it takes to complete equipment preparation before fault isolation occurs;
time of fault isolation T 2 : time required to isolate the fault to proceed to repair the hierarchy;
decomposition time T 3 : time required to disassemble the device to reach the LRU determined in the fault isolation process;
time of replacement T 4 : the time required to replace a LRU that failed or is suspected of failing;
assembly time T 5 : time required to reassemble the equipment after the LRU has been replaced;
adjusting the time T 6 : time required to adjust the system or LRU after troubleshooting;
test time T 7 : checking whether the fault is eliminated and whether the system runs for the required time;
starting time T 8 : the time required to restore the system to the operational state prior to the occurrence of the fault immediately after verifying that the fault has been cleared and that the system is operational;
outfield-level reparative repair mean repair time for LRU of aircraft
The sum of the time of each basic maintenance operation is as follows:
establishing an LRU (line of Party) outfield-level repairability maintenance operation model of the aircraft according to outfield-level repairability maintenance operation of the LRU of the aircraft;
3) Establishing a model for calculating total repair time of outfield-level repairability of the airplane
Collecting various field-level repairability maintenance operation time, training the airplane LRU field-level repairability maintenance operation model established in the step 2) to obtain the field-level repairability maintenance average repair time of the airplane LRU
The obtained average repair time of the repair maintenance of the external field level of the LRU of the airplane is
Substituting the calculated time into a formula (2) to establish a total time calculation model of the external field-level repairability maintenance of the airplane;
in formula (2), M trt -total time for outfield-level restorative maintenance of the aircraft;
l-total life of the aircraft;
D i -run ratio of LRU of i-th kind;
λ i -the failure rate of the ith LRU,
Q i -number of LRUs of the i-th kind;
4) Assessing total time for field-level restorative maintenance of an aircraft
Inputting the parameter data obtained in the step 1) into the aircraft outfield-level repairability maintenance total time calculation model established in the step 3), so as to obtain the aircraft outfield-level repairability maintenance total time, judging whether the outfield-level repairability maintenance cost is within an acceptable range according to the aircraft outfield-level repairability maintenance total time base number, and further adjusting the reliability index-mean fault interval flight time (MFHBF) of the aircraft, so as to realize the evaluation of the aircraft outfield-level repairability maintenance parameters.
Claims (7)
1. The method is characterized by comprising the steps of firstly collecting the service life cycle of an airplane and parameter data of each outfield replaceable unit, then establishing an outfield repairability maintenance operation model of the airplane outfield replaceable unit according to outfield repairability maintenance operation of the airplane outfield replaceable unit, and training the outfield repairability maintenance operation model to obtain the outfield repairability maintenance average repair time of the airplane outfield replaceable unit; establishing an aircraft outfield-level repairability maintenance total time calculation model through outfield-level repairability maintenance average repair time of the aircraft outfield replaceable unit, and finally inputting the obtained parameter data into the aircraft outfield-level repairability maintenance total time calculation model to obtain the aircraft outfield-level repairability maintenance total time so as to judge outfield-level repairability maintenance cost and further adjust reliability index-average fault interval flight hours of the aircraft, so that the assessment of the aircraft outfield-level repairability maintenance parameters is realized; the method comprises the following specific steps:
1) Collecting the life cycle of the airplane and the parameter data of each outfield replaceable unit, wherein the parameter data comprises an operation ratio and a failure rate;
2) Establishing an external field grade repairability maintenance operation model of replaceable unit of an external field of an airplane
Establishing an outfield-level repairability maintenance operation model of the replaceable outfield unit of the airplane according to outfield-level repairability maintenance operation of the replaceable outfield unit of the airplane, wherein the outfield-level repairability maintenance operation of the replaceable outfield unit of the airplane comprises preparation, fault isolation, decomposition, replacement, assembly, adjustment, inspection and starting;
3) Establishing a model for calculating total repair time of outfield-level repairability of the airplane
Collecting various outfield-level repairability maintenance operation time, training the outfield-level repairability maintenance operation model of the replaceable unit of the aircraft outfield established in the step 2) to obtain the average repair time of the outfield-level repairability maintenance of the replaceable unit of the aircraft outfield
The average repair time of the outfield grade repairability maintenance of the replaceable unit of the outfield of the airplane is obtained
Substituting the calculated time into a formula (2) to establish a total time calculation model of the outer field grade repairability maintenance of the airplane;
in the formula (2), M trt -total time for outfield-level reparative maintenance of the aircraft;
l-total life of the aircraft;
D i -operating ratio of the i-th aircraft outfield replaceable unit;
λ i -failure rate of the i-th aircraft outfield replaceable unit,
Q i -number of outfield replaceable units of the ith aircraft;
4) Assessing total time for field-level restorative maintenance of an aircraft
Inputting the parameter data obtained in the step 1) into the total time calculation model of the repair of the outfield grade of the airplane established in the step 3), so as to obtain the total time of the repair of the repairability of the outfield grade of the airplane, judging whether the total time base of the repair of the outfield grade of the airplane is in an acceptable range or not according to the total time base of the repair of the outfield grade of the airplane, and further adjusting the reliability index-average fault interval flight hour of the airplane, thereby realizing the evaluation of the repair parameters of the repairability of the outfield grade of the airplane.
2. The method for evaluating the aircraft outfield-level repairability maintenance parameters according to claim 1, wherein in the step 1), the life cycle of the aircraft is obtained according to the requirements of the overall aircraft technical scheme.
3. The method of claim 1, wherein in step 1), the operating ratio of the aircraft field replaceable unit is determined based on the operating time of the aircraft field replaceable unit per flight hour of the aircraft.
4. The method for evaluating the parameters for repairing an aircraft outfield grade according to claim 1, wherein in step 1), the failure rate of the replaceable unit of the aircraft outfield is calculated according to the reliability prediction result MTBF of the replaceable unit of the aircraft outfield.
5. The method for evaluating the field-level repairability maintenance parameters of the aircraft according to claim 1, wherein in the step 2), the field-level repairability maintenance operation of the replaceable unit of the aircraft field comprises preparation, fault isolation, disassembly, replacement, assembly, adjustment, inspection and starting.
6. The method of claim 5, wherein the method further comprises the step of evaluating the outfield-level repairability repair parameters,
preparation time T 1 : the time it takes to complete equipment preparation before fault isolation occurs;
time of fault isolation T 2 : time required to isolate the fault to proceed with the repair level;
decomposition time T 3 : time required to disassemble the apparatus to reach the outfield replaceable unit determined during fault isolation;
time of replacement T 4 : the time required to replace a failed or suspected failed line replaceable unit;
assembly time T 5 : time required to reassemble the device after the field replaceable unit has been replaced;
adjusting the time T 6 : time required to adjust the system or field replaceable unit after troubleshooting;
test time T 7 : checking whether the fault is eliminated and whether the system runs for the required time;
starting time T 8 : after verifying that the fault has been cleared and the system is operational, the time required to restore the system to the operational state prior to the fault is immediately.
7. The method of claim 6, wherein the average time to repair the outfield-level repairability repair of the replaceable unit of the outfield is the average repair time of the outfield-level repairability repair of the replaceable unit of the aircraft outfield
The sum of the time of each basic maintenance operation is as follows:
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0622376D0 (en) * | 2005-11-29 | 2006-12-20 | Boeing Co | Line replaceable systems and methods |
| CN105260529A (en) * | 2015-09-30 | 2016-01-20 | 西安航空制动科技有限公司 | Aircraft braking system MTTR (mean time to repair) authentication method |
| CN107103368A (en) * | 2017-04-05 | 2017-08-29 | 北京航空航天大学 | A kind of importance appraisal procedure of product function structure and capability of maintenance design key element |
| CN111428889A (en) * | 2019-01-08 | 2020-07-17 | 北京航空航天大学 | Device and method for dividing external field replaceable unit L RU |
-
2021
- 2021-02-18 CN CN202110189779.6A patent/CN112862328B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0622376D0 (en) * | 2005-11-29 | 2006-12-20 | Boeing Co | Line replaceable systems and methods |
| CN105260529A (en) * | 2015-09-30 | 2016-01-20 | 西安航空制动科技有限公司 | Aircraft braking system MTTR (mean time to repair) authentication method |
| CN107103368A (en) * | 2017-04-05 | 2017-08-29 | 北京航空航天大学 | A kind of importance appraisal procedure of product function structure and capability of maintenance design key element |
| CN111428889A (en) * | 2019-01-08 | 2020-07-17 | 北京航空航天大学 | Device and method for dividing external field replaceable unit L RU |
Non-Patent Citations (1)
| Title |
|---|
| 维修性的定量设计;刘玉明;《舰船电子工程》;20031020(第5期);第4-6节 * |
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