Wszystkie pola: availability - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Approach to increase both operators' safety and devices' availability under operation
Autorzy:: Gliwiński, M.
Szpytko, J.
Powiązania:: https://bibliotekanauki.pl/articles/246134.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: availability
operator
devices
Opis:: The paper is focusing on increasing both operators' safety and devices' availability under operation. Each process supported by any composition of the man-devices set it is possible to present and described by selected operation (exploitation) parameters, which can be a subject of monitoring. With use process operation parameters set the target-oriented production Key Performance Indicator has been proposed. Base on Key Performance Indicator both operators' safety and devices' availability analysis is possible in practice. Paper composition contains: solution description, good practice examples discussion and conclusions. Safety of man/ operators and availability of devices are very important for everybody and using preventive one solution we can increase and protect both. Additional process operation parameters monitoring, as well as measuring, are an important factors increases people 's awareness. Two different approaches of the same process have been described on examples coming from manufacture. The following approaches have been taken under consideration: traditional one based on reactive maintenance and new approach based on preventive maintenance. The comparison of both scenarios was discussed. For human's safety and dependability of devices, responsibility of all involved employees in practice is equal.
Źródło:: Journal of KONES; 2010, 17, 1; 143-147
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Method for assessment and control of availability of executive subsystem of a transportation system
Autorzy:: Woropay, M.
Migawa, K.
Powiązania:: https://bibliotekanauki.pl/articles/246869.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
availability
operation and maintenance process
Opis:: In this work, a method for assessment and control of availability of executive subsystem consisting of elementary subsystems of the type has been presented. The goal of the executive subsystem is to perform the assigned transport tasks over set routes, with a given frequency, according to a set schedule. A proper accomplishment of the transport task is possible only if the required number of technical objects (transport means) is prepared to perform the assigned task in a given time. Among many significant criteria used for assessment of a transport system operation there is one of special importance that is availability of the executive subsystem to perform the assigned tasks. Availability of the executive system to perform the assigned tasks depends on availability of particular technical objects (transport means) used in the system of transportation and their number. On the basis of the above statement, it can be said that control of the executive subsystem availability can be carried out both by selecting technical objects with the required availability and matching the required number of the objects which are to be used in the system in order to ensure proper accomplishment of the transport tasks. In this work there has been discussed a method for determination of the required availability of a single object as well as the required number of technical objects indispensable to perform appropriately the assigned transport task, on the basis of the transportation system availability assessment. Availability of the transportation system is determined on the basis of a mathematical model of the operation and maintenance process of technical objects, in the studied transportation system. Exemplary results have been presented on the basis of experimental data, obtained from the tests carried out in a real operation and maintenance system of transport means.
Źródło:: Journal of KONES; 2012, 19, 3; 491-498
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Availability of a technical object determined in a finite time interval
Autorzy:: Woropay, M.
Migawa, K.
Bojar, P.
Szubartowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247070.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
operation process
semi-Markov model
availability
Opis:: In the article, a method for determination of the technical object availability, GO (r) in a finite time interval x, defined by the time of the transport task duration, has been discussed. All of the study has been presented on the example of a selected system of technical object operation - a system of transport means operation, in a big urban complex (more than 400 thousand inhabitants). Direct performance of the transport tasks in the analyzed system is the responsibility of an executive system consisting of elementary subsystems of the type operator- transport means. Availability of transport means elementary subsystems is crucial for efficient accomplishment of transport tasks. The presented method involves determination of the technical object availability, on the basis of a mathematical model of the operation process which takes place in the studied system, taking into consideration the technical object reliability characteristics. For this purpose, significant states of the transport means operation have been determined and they have been classified in terms of the availability criterion. Basing on this, an event and mathematical models of transport means operation process have been developed, with the semi Markov homogenous model serving as a mathematical model of the studied operation process. Also, values of the analyzed characteristics have been determined.
Źródło:: Journal of KONES; 2011, 18, 4; 555-562
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Engineering availability of aircrafts
Autorzy:: Lewitowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/242226.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
aircraft
diagnostic
failure
Opis:: Engineering availability and operational readiness of an aircraft are requisites for its ability to operate. After the aircraft has been supplied, both features determine airworthiness of the aircraft, in compliance with the ARC (Airworthiness Review Certificate). Improvement in methods of maintaining the aircraft availability proceeds in compliance with the MSG (Maintenance Steering Group) rules. The paper has been intended to outline the process of maintaining the engineering availability of the aircraft, with account taken of: aircraft maintainability, importance of the engineering diagnostics, and evaluation ratesfor dijferent maintenance patterns. Maintaining technical ability/ airworthiness of an aircraft, ground service of aircrafts, service-friendliness of an aircraft, unfitness and damages to an aircraft, ground diagnostic andprovision equipment for A-380, computer aided verification of an inspection of a front undercarriage (B) of an aircraft (A) and service of the B-787 aircraft (C), percentage for composite material portion in the structure of some aircrafts and helicopters, positions of composite material airframe elements in B-75 7/7 67, B-777, B-787 are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 2; 255-262
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The method of evaluation of the availability of the transport system for the realization of the assigned transport task
Autorzy:: Woropay, M.
Migawa, K.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/247624.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
technological availability
threshold structure
semi-Markovian model
Opis:: The article presents the method of evaluation of the availability of the utilization subsystem in a transport system. The method includes the defining and comparison of the values of the availability of the utilization subsystem to the value of the required availability. The article also deals with the way of defining the minimum availability of an individual technological object (means of transport) as well as the minimum number of technological objects used in the system, in order for the obtained value of the availability of the utilization subsystem to exceed the value of the required availability determined by the parameters of transport task. The values of the availability of the utilization subsystem are defined according to the availability of an individual technological object, the number of objects used in the system as well as the structure by which the individual technological objects are linked. The availability of the individual technological object was defined on the basis of a constructed mathematical model of the utilization process realized in the tested transport system. Then, for the utilization data obtained during tests conducted in an existing transport system, the values of the analyzed characteristics were defined. The presented results are the effect of research conducted as part o f a larger research project pertaining to the creation o f a decision-making model of controlling the availability of a transport system.
Źródło:: Journal of KONES; 2010, 17, 3; 505-512
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Security of telecommunications systems in transport
Autorzy:: Siergiejczyk, M.
Gago, S.
Powiązania:: https://bibliotekanauki.pl/articles/242473.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: security
transport
telecommunications
reliability
availability
Opis:: The article presents the selected elements affecting reliability and security of the telecommunications networks, which support transport services. In terms of telecommunications security, the selected methods and mechanisms, which allow providing the required level of reliability and availability of the telecommunications networks, in the fault-free operation and emergency modes, were discussed. In the article, attention was paid to the impact of a way of operation and maintenance on security of the telecommunications networks, and also on a correlation between the telecommunications system security and the security culture within the administrative and decision-making bodies. The telecommunications networks used in transport ensure the broadly understood safe provision of data transmission services. Telecommunications networks consist of hardware and software systems, and the data transmission security depends both on hardware and software. It is a set of methods and mechanisms, which provides a high level of the system’s reliability and availability by selecting the appropriate system structure.
Źródło:: Journal of KONES; 2017, 24, 3; 253-260
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Transport device operator stress features analysis
Autorzy:: Woźniak, D.
Rumian, S.
Szpytko, J.
Powiązania:: https://bibliotekanauki.pl/articles/247496.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: man operator
stress
availability
anthropocentric system
Opis:: The paper is focusing on known publications review concerning the transport device operator stress features and identification possible and their influence at man decision making process. The paper composition include: stress phenomenon analysis, human features and stress interaction analysis, human availability models including stress factors, and stress analysis tools analysis. Stress has been recognized as a major influential factor to affect the operator's health, safety, and productivity. Stress is subjective and express man reaction from external to potential reactions. The operator stress is often expressed as quality of life indicators related to satisfaction with a given domain of functioning and have influence at the human operation potential (health). Studies on the role of the state of mental and physiological functions are an important part of the theory of operators working reliability and a cause-and-effect relationship between the functional state and their availability. The review on known selected publications concerning the transport device operator stress features and others, including own research, helps to identify possible stressors acting at man and their influence at decision making process. The measure possible stress parameters: physiological, subjective and behavioural types have also been discussed. The transport devices' operator fatigue remains to be one of the important factors that contribute to possible accidents accompanying transportation processes. The problem of availability and reliability of human operators activities are today more practically oriented crucial and a branch of applied psycho-physiological research.
Źródło:: Journal of KONES; 2011, 18, 4; 577-586
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Method of availability control of the transport means
Autorzy:: Woropay, M.
Migawa, K.
Neubauer, A.
Powiązania:: https://bibliotekanauki.pl/articles/247367.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: semi-Markov processes
control decisions
genetic algorithm
Opis:: The problems presented in this article deal with operation and maintenance process control in complex systems of technical object operation and maintenance. The article presents the description of the method concerning the control availability for technical objects (means of transport) on the basis of the mathematical model of the operation and maintenance process with the implementation of the decisive processes by semi-Markov. The presented method means focused on the preparing the decisive for the operation and maintenance process for technical objects (semi-Markov model) and after that specifying the best control strategy (optimal strategy) from among possible decisive variants in accordance with the approved criterion (criteria) of the activity evaluation of the system of technical objects operation and maintenance. In the presented method specifying the optimal strategy for control availability in the technical objects means a choice of a sequence of control decisions made in individual states of modelled operation and maintenance process for which the function being a criterion of evaluation reaches the extreme value. In order to choose the optimal control strategy the implementation of the genetic algorithm was chosen. Depending on one’s needs, the genetic algorithm including the obtained model of operation and maintenance process may be implemented for mathematic formulation and solution of a wide array of problems connected with control of complex systems of technical object operation and maintenance. It pertains mostly to the economic analysis, safety management and controlling availability and reliability of complex systems. The opinions were presented on the example of the operation and maintenance process of the means of transport implemented in the real system of the bus municipal transport.
Źródło:: Journal of KONES; 2013, 20, 4; 485-492
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Non-suitable device technical state replacement results maintenance approach
Autorzy:: Szpytko, J.
Gliwinski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247072.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dependability
safety
monitoring
availability
production process
synergy effect
Opis:: Paper presents the methodology of maintaining dependability of devices used in process with use particular scheduled methods of maintenance. Presented in paper methods are dedicated for particular area and included there machines, devices, auxiliary system or tools. Presented in paper selected method and area are connected and have influence for each other. Methods are combination of operators experience, recommendation of production line supplier and engineers approach. Selected areas enfold both, operating and maintenance issues. From production process point of view, operating area which is mostly focused on steering of the process and maintenance area which is mostly focused on maintaining dependability of included into process machines and devices on satisfy level, should be treated with the same importance. Situation whit taking care about operational issues and forgetting about maintenance issues can work out only for very short time. Opposite situation is not possible to imagine. Operational area and maintenance area are interconnected and can be beneficial only in cooperation. Another problem connected with that is peoples' understanding, they have to accept that their jobs in their areas can be profitable with strongly and proper cooperation with jobs and positive attitude of people from other area. Production process consist from operation and maintenance area as well and only with this approach can be profitable for owners and all employees. Presented in paper methods touches both operational and maintenance areas as well. Paper is summarizing by results of experiment coming from practice.
Źródło:: Journal of KONES; 2011, 18, 4; 481-492
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Dependability shaping approach of devices used in production process
Autorzy:: Szpytko, J.
Gliwinski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247074.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: availability
production process
OEE indicator
synergy effect
constantly improvement
Opis:: Paper presents the methodology of shaping dependability of devices used in process with use key performance indicators for increasing Overall Equipment Efficiency (OEE) which are a subject of devices' parameters monitoring under operation. Value of Overall Equipment Efficiency describes the technical state of devices included into production process. Value itself can be different for different production lines even in one industry. For engineers it is important to put all possible effort to increasing values of particular key performance indicators which are building Overall Equipment Efficiency. Values of particular key performance indicators, shows to experienced engineer real technical state of whole production line. Presented in paper selected indicators are connected and have influence for each other, moreover operation parameters of devices' are characterizing production process. Key performance indicators presented in paper represents three the most important aspects of the production process: handling of the process, operators' area of responsibility, management of the process, managers' area of responsibility and optimization of the process, planners' area of responsibility. Only proper cooperation of these three groups of people can benefits requested result. From owners point of view, presented areas have the same importance, problems created in one of them can negatively influence for overall income of whole enterprise.
Źródło:: Journal of KONES; 2011, 18, 4; 493-502
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Critical assessment of ERTMS systems reliability based on the example of the GSM-R system
Autorzy:: Siergiejczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/241558.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exploitation
reliability
availability
ERTMS
GSM-R
Opis:: It can be assumed that at least some of the systems associated with the train traffic operation work in the “mission” mode, i.e. their availability and operational dependability are related to safe “move” of a train through the strictly defined section of the railway line, i.e. systems (devices) must operate reliably during “mission”. In the remaining time, operation of devices does not affect the safe train traffic operation. For example, it is possible to list crossing signalling systems or the GSM-R system, which along with the ETCS 2/3 system, constitutes the ERTMS system. In the article, the GSM-R system operation analysis, in terms of the above-mentioned factors, is presented. In general, it can be assumed that the GSM-R system devices (e.g. BTS base stations) should be efficient within the specific periods, i.e. during the train passing through the relevant section of the railway line. According to the authors’ calculations, it is stated that within longer periods, the selected GSM-R system devices (BTS stations) cannot be fully efficient, i.e. possible failures occurred and removed in these periods will not affect the safe train running.
Źródło:: Journal of KONES; 2016, 23, 4; 461-470
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Initial model of transport means availability of real city transport system
Autorzy:: Woropay, M.
Migawa, K.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/242151.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: city transport system
Markov's model
technical object
Opis:: The article presents a determination method of transport means service ability in a real city transport system. The considerations have been demonstrated on the basis of a real city bus transport system in a chosen agglomeration. The executive subsystem consisting of elementary subsystems of the type human - technical object (operator - transport means) whose service ability and reliability have a direct influence on capability to perform the transport task is directly responsible for accomplishment of the city transport system tasks. In order to develop a model of means of transport serviceability there were determined significant states of the operational use process and there was made a division and reduction of the number of states in terms of the availability criterion. On this basis, an event model of the process of transport means operational use, and then a mathematical model of this process, were built with the assumption that its model is a homogenous Markov 's process X(t). Next, boundary values of availability coefficient for the distinguished availability levels of transport means used in the city transport system were determined for operational data obtained from a real city bus transport system. The discussed model for determination of transport means availability is an initial one, developed on the basis of a nine-state model of operational use. In further part of the paper, there will be developed a resultant model of transport means availability determination (semi-Markov 's sixteen-state model), being a component of a wider, decision model for creation and assessment of transport means availability.
Źródło:: Journal of KONES; 2009, 16, 2; 495-502
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Evaluation of operational availability of municipal transport system
Autorzy:: Woropay, M.
Bojar, P.
Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/949488.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
simulation
combustion engines
air pollution
environmental protection
Opis:: The primary subject of research is the procedure leading to safe, efficient, reliable and timely completion of transport tasks. The tasks, assigned to the transport system, are carried out by an operative subsystem, comprised of elementary subsystems of the man – technical object (operator-vehicle) type. The timely and safe completion of the tasks is influenced by the level of availability and reliability of elementary subsystems. Those in control of the process of the use of means of transport (vehicles) should undertake control decisions in such a way that would correctly evaluate the efficiency of process completion. In the area of public transport, technical availability of buses constitutes an important criterion of the evaluation of transport system. As a result, the transport company should provide continuous surveillance of the process of vehicle use in order to achieve running availability of the whole system. The requirements expected from devices and machines used head towards servicing via preventive method taking into account the technical condition of the system. Such an approach is a transformation towards technical system servicing process management. Correct completion of transport tasks is possible when the required traffic safety is met, taking into consideration the technical condition of the means of transport. The municipal transport systems should ensure the quality of the services provided to meet the expectations of the users. In the set of characteristics of the researched transport system, the following ones stand out: regularity, availability, reliability, course frequency, travel comfort, timeliness, speed, service complexity, competitive cost of transport service, and safety.
Źródło:: Journal of KONES; 2017, 24, 4; 355-361
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Impact of the construct type on the availability of the selected groups of technical objects
Wpływ konstrukcji na gotowość wybranych grup obiektów technicznych
Autorzy:: Pilch, Robert
Smolnik, Maksymilian
Powiązania:: https://bibliotekanauki.pl/articles/38921883.pdf
Data publikacji:: 2024
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: availability
complex technical object
construct
design
gotowość
obiekt złożony
konstrukcja
Opis:: The paper concerns the quantitative assessment of the availability of the groups of machines of the two different types of construct /design/ – traditional and modular, which perform the same functions and in the analyzed groups constitute koon-type reliability structures. The main aim is to determine the size of the differences in the availability and reliability of such groups of machines at different values of the characteristics regarding the failure rate and renewal of their subassemblies and modules. The solution to the problem was obtained through digital simulation, for which the model and assumptions were developed by the authors. The obtained results indicate that the groups of the machines of modular construct /design/ are characterized by better reliability and availability, which may constitute one of the guidelines in the process of making investment decisions and planning the use and maintenance of this type of machines.
Artykuł dotyczy ilościowej oceny gotowości grup maszyn o dwóch różnych typach konstrukcji: tradycyjnej i segmentowej, które pełnią te same funkcje i w analizowanych grupach tworzą struktury niezawodnościowe typu kzn. Głównym celem jest określenie, jak duże są różnice w gotowości i niezawodności takich grup maszyn przy różnych wartościach charakterystyk dotyczących awaryjności i odnowy ich podzespołów i segmentów. Rozwiązanie problemu uzyskano na drodze symulacji cyfrowej, do której model i założenia opracowali autorzy. Uzyskane wyniki wskazują, że lepszą niezawodnością oraz gotowością charakteryzują się grupy maszyn o konstrukcji segmentowej, co może stanowić jedną ze wskazówek w procesie podejmowania decyzji inwestycyjnych i planowania eksploatacji tego typu maszyn.
Źródło:: Journal of KONBiN; 2024, 54, 1; 133-155
1895-8281
2083-4608
Pojawia się w:: Journal of KONBiN
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: How to formulate rates to assess operational effectiveness of military aircraft - an introduction
Autorzy:: Tomaszek, H.
Kaleta, R.
Zieja, M.
Powiązania:: https://bibliotekanauki.pl/articles/246720.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dependability
availability
effectiveness
survivability
service life
Opis:: The paper has been intended to deliver a brief introduction to the forecast on the potential military advantages for some selected aircraft using data from the TURAWA and SAMANTA computer-based systems for tracking aircraft operation and maintenance. The term "operational effectiveness" of a military aircraft may be read as a sum of effects gained from particular sorties by this aircraft. In the simplest case, the operational effectiveness is nothing more but the number of destroyed hostile targets. The number of destroyed hostile targets is a random variable. With account taken of hostile counteractions and unreliability of engineered systems, the number of possible sorties by one aircraft is also a random variable. Therefore, the assessment of predicted operational effects gained by the aircraft may result from, either: a single operational (combat) flight (sortie) by one aircraft or flights (sorties) within some assumed time interval (time of an air mission), or the aircraft's total lifetime (service life). Findings of the study may find their application in an attempt to use the data collected in the TURAWA and SAMANTA systems to construct rates of aircraft effectiveness in the forms of: expected value of effects gained from a single sortie, expected value of effects gained from some assumed time interval (flying time), expected value of effects gained throughout the aircraft’s service life. All the relationships gained may then be applied to forecast the effectiveness of operating some selected types of aircraft using data collected throughout the service, and verified under field conditions while performing exercises.
Źródło:: Journal of KONES; 2012, 19, 2; 525-530
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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