Design,production,testing,and operation of reusable launch vehicles are promising areas of development and theoretical research in the field of systems for the maintenance,repair,restoration,and operation of aircraft,...Design,production,testing,and operation of reusable launch vehicles are promising areas of development and theoretical research in the field of systems for the maintenance,repair,restoration,and operation of aircraft,including reusable transport rocket and space systems,are relevant.The article is aimed at harmonizing the design solutions of technical systems related to measures for their maintenance during storage.The purpose of the article is to develop methods and algorithms that allow matching performance characteristics and design solutions.The scientific problem is solved by compiling and analyzing the state graph of maintenance models using the Kolmogorov system of differential equations.As a result,the models obtained make it possible to predict the performance of maintenance of complex technical systems during storage and explore the possibility of reducing downtime for maintenance without a significant decrease in the quality of maintenance,namely:to evaluate the optimal maintenance period,to agree on the reserve ratio and maintenance period(costs maintenance depending on the ratio of the reserve),choose the optimal strategy for scheduled maintenance,taking into account the continuous monitoring of the technical condition of the aircraft,evaluate the intensity of failure recovery during continuous and periodic monitoring,and justify the most appropriate ways to improve the quality of service,provided that downtime for maintenance is limited and predict the probability of detecting faults during maintenance.展开更多
Reliability is an applied scientific direction.Here,the methods of research of systems under conditions of occurrence and elimination of random events are used and developed:failures of components of these systems.Bas...Reliability is an applied scientific direction.Here,the methods of research of systems under conditions of occurrence and elimination of random events are used and developed:failures of components of these systems.Basic research methods and conclusions of reliability theory are of general nature and can be applied in any field of engineering.In this paper,a team of authors considered an urgent problem of modern production,which is an overestimated number of full-scale tests,which entails an increase in the cost of products.The aim of the work is to create a method for evaluating complex technical systems based on the results of testing its elements,in particular electrical circuits.The practical significance of the work is expressed in the application of the method in analytical calculations of the reliability of component parts based on test data in the design of new complex technical systems and complexes.Also,in the work,the types of system failures are briefly considered and classified,and a method for experimental assessment of system reliability is given.The most significant factors for the stage of statistical processing are considered and analyzed.The following is a review of the literature on the issue under study and several examples of the use of the method in practice,with confirmation of the accuracy of the result by practical testing.As a result of the work,it was obtained that if the estimates of the probabilities of failure-free operation of all elements of the system are the same,then the estimates of the probabilities of the states of systems with a failure of the same number of elements are also the same.As a conclusion,practical recommendations on the application of the method are presented,but also the experience of the authors in the operation of complex technical systems shows that the operational reliability is almost always lower than the level obtained from the calculation results.The inaccuracy is explained by the imperfection of the production technology and the low reliability of reference information.展开更多
文摘Design,production,testing,and operation of reusable launch vehicles are promising areas of development and theoretical research in the field of systems for the maintenance,repair,restoration,and operation of aircraft,including reusable transport rocket and space systems,are relevant.The article is aimed at harmonizing the design solutions of technical systems related to measures for their maintenance during storage.The purpose of the article is to develop methods and algorithms that allow matching performance characteristics and design solutions.The scientific problem is solved by compiling and analyzing the state graph of maintenance models using the Kolmogorov system of differential equations.As a result,the models obtained make it possible to predict the performance of maintenance of complex technical systems during storage and explore the possibility of reducing downtime for maintenance without a significant decrease in the quality of maintenance,namely:to evaluate the optimal maintenance period,to agree on the reserve ratio and maintenance period(costs maintenance depending on the ratio of the reserve),choose the optimal strategy for scheduled maintenance,taking into account the continuous monitoring of the technical condition of the aircraft,evaluate the intensity of failure recovery during continuous and periodic monitoring,and justify the most appropriate ways to improve the quality of service,provided that downtime for maintenance is limited and predict the probability of detecting faults during maintenance.
文摘Reliability is an applied scientific direction.Here,the methods of research of systems under conditions of occurrence and elimination of random events are used and developed:failures of components of these systems.Basic research methods and conclusions of reliability theory are of general nature and can be applied in any field of engineering.In this paper,a team of authors considered an urgent problem of modern production,which is an overestimated number of full-scale tests,which entails an increase in the cost of products.The aim of the work is to create a method for evaluating complex technical systems based on the results of testing its elements,in particular electrical circuits.The practical significance of the work is expressed in the application of the method in analytical calculations of the reliability of component parts based on test data in the design of new complex technical systems and complexes.Also,in the work,the types of system failures are briefly considered and classified,and a method for experimental assessment of system reliability is given.The most significant factors for the stage of statistical processing are considered and analyzed.The following is a review of the literature on the issue under study and several examples of the use of the method in practice,with confirmation of the accuracy of the result by practical testing.As a result of the work,it was obtained that if the estimates of the probabilities of failure-free operation of all elements of the system are the same,then the estimates of the probabilities of the states of systems with a failure of the same number of elements are also the same.As a conclusion,practical recommendations on the application of the method are presented,but also the experience of the authors in the operation of complex technical systems shows that the operational reliability is almost always lower than the level obtained from the calculation results.The inaccuracy is explained by the imperfection of the production technology and the low reliability of reference information.
