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Volume 52 (2022): Issue 4 (December 2022)

Volume 52 (2022): Issue 3 (September 2022)

Volume 52 (2022): Issue 2 (June 2022)

Volume 52 (2022): Issue 1 (March 2022)

Volume 51 (2021): Issue 4 (December 2021)

Volume 51 (2021): Issue 3 (October 2021)

Volume 51 (2021): Issue 2 (June 2021)

Volume 51 (2021): Issue 1 (March 2021)

Volume 50 (2020): Issue 4 (December 2020)

Volume 50 (2020): Issue 3 (October 2020)

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Volume 50 (2020): Issue 1 (March 2020)

Volume 49 (2019): Issue 4 (December 2019)

Volume 49 (2019): Issue 3 (October 2019)

Volume 49 (2019): Issue 2 (June 2019)

Volume 49 (2019): Issue 1 (March 2019)

Volume 48 (2018): Issue 1 (December 2018)

Volume 47 (2018): Issue 1 (December 2018)

Volume 46 (2018): Issue 1 (June 2018)

Volume 45 (2018): Issue 1 (March 2018)

Volume 44 (2017): Issue 1 (December 2017)

Volume 43 (2017): Issue 1 (October 2017)

Volume 42 (2017): Issue 1 (June 2017)

Volume 41 (2017): Issue 1 (March 2017)

Volume 40 (2016): Issue 1 (December 2016)

Volume 39 (2016): Issue 1 (October 2016)

Volume 38 (2016): Issue 1 (October 2016)

Volume 37 (2016): Issue 1 (July 2016)

Volume 36 (2015): Issue 1 (December 2015)

Volume 35 (2015): Issue 1 (November 2015)

Volume 34 (2015): Issue 1 (September 2015)

Volume 33 (2015): Issue 1 (September 2015)

Volume 32 (2014): Issue 1 (December 2014)

Volume 31 (2014): Issue 1 (September 2014)

Volume 30 (2014): Issue 1 (June 2014)

Volume 29 (2014): Issue 1 (March 2014)

Volume 27 (2014): Issue 1 (February 2014)

Volume 26 (2013): Issue 1 (June 2013)

Volume 25 (2013): Issue 1 (March 2013)

Volume 24 (2012): Issue 1 (December 2012)

Volume 23 (2012): Issue 1 (September 2012)

Volume 22 (2012): Issue 1 (June 2012)

Volume 21 (2012): Issue 1 (March 2012)

Volume 20 (2012): Issue 1 (January 2012)

Volume 14-15 (2010): Issue 2010 (December 2010)

Volume 13 (2010): Issue 1 (January 2010)

Volume 11-12 (2009): Issue 1 (December 2009)

Volume 9-10 (2009): Issue 1 (January 2009)

Volume 8 (2008): Issue 1 (December 2008)

Volume 7 (2008): Issue 4 (December 2008)

Volume 6 (2008): Issue 3 (September 2008)

Volume 5 (2008): Issue 2 (June 2008)

Volume 4 (2008): Issue 1 (March 2008)

Volume 3 (2007): Issue 2007 (January 2007)

Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

Volume 49 (2019): Issue 1 (March 2019)

Journal Details
Format
Journal
eISSN
2083-4608
First Published
26 Feb 2008
Publication timeframe
4 times per year
Languages
English

Search

22 Articles
Open Access

The Effective Identification of Objects in Selected Areas of Transport Transhipment

Published Online: 20 Jun 2019
Page range: 7 - 30

Abstract

Abstract

The dynamic evolution of techniques and networking technologies finds its application not only in the traditional networks and IT systems but is also possible to be successfully implemented in highly professional implementations of the logistics sector. The authors conducted a multi-faceted analysis and focused on the technical aspect associated with the selected components of logistics, i.e. storage, handling and transport. Ensuring efficient transhipment, with possible numerous and unwanted anomalies is particularly difficult when there may be numerous and unwanted anomalies. Technical objects and people changing the means of transport should achieve this in a reliable and safe way. Hence the need for continuous and effective monitoring of ongoing processes, based on a highly reliable monitoring system (MS). The article presents the concept of using a complex MS for the purpose of effective identification of objects and events.

Keywords

  • surveillance
  • identification
  • reliability
  • UAV
Open Access

Dynamic Bayesian Network for Reliability of Mechatronic System with Taking Account the Multi-Domain Interaction

Published Online: 20 Jun 2019
Page range: 31 - 46

Abstract

Abstract

This article presents a methodology for reliability prediction during the design phase of mechatronic system considered as an interactive dynamic system. The difficulty in modeling reliability of a mechatronic system is mainly due to failures related to the interaction between the different domains called Multi-domain interaction. Therefore in this paper, after a presentation of the state of the art of mechatronic systems reliability estimation methods, we propose a original approach by representing multi domain interactions by influential factors in the dysfunctional modeled by Dynamic Bayesian Networks. A case study demonstrates the interest of the proposed approach.

Keywords

  • Predictive Reliability
  • Quantitative modeling
  • Dynamic Hybrid System
  • Mechatronics
  • Multi-domain Interactions
  • Dynamic Bayesian Network
Open Access

Safety of Sea Vessels in the Aspect of Model Research

Published Online: 20 Jun 2019
Page range: 47 - 68

Abstract

Abstract

The article presents a modern method of modeling stability and unsinkability of vessels using physical models of warships and merchant ships. Model tests of watercraft are carried out primarily to assess their marine properties in various operational states. The purpose of this research is to create technically useful calculation methods for forecasting the behavior of a vessel at sea in various meteorological conditions. The main role played by model tests and measurements on real objects is the verification of these methods. Both types of experiments are also a source of inspiration for creating new modified mathematical models and accounting methods based on them. These tests can contribute to the improvement of the safety of vessels at sea.

Keywords

  • model research
  • ship
  • ship stability
Open Access

Evaluation of Train Crews Schedule in Terms of Robustness

Published Online: 20 Jun 2019
Page range: 69 - 94

Abstract

Abstract

The evaluation of team work schedules in complex rail transport conditions is related to the robustness of individual solutions. In rail systems there are many aims that are important for users. One of the most important aims is to find a feasible solution. It is characterized by the non-conflicting schedule with another train, minimizing the travel time of the trainset and taking into account the priority of train. The problem of responding to delays in terms of reorganisation of work, prevention of delay propagation and real-time schedule changes is important. Schedules are built in a way that ensures the best use of work time. This has a negative impact on critical situations. The study analysed the changes of the conductor’s team to another train depending on the buffer time provided in work plan, real time needed for change and train delays.

Keywords

  • scheduling
  • robustness
  • rating
Open Access

Risk Assessment of Remotely Piloted Aircraft Systems

Published Online: 20 Jun 2019
Page range: 95 - 106

Abstract

Abstract

The intensive growth in the popularity of Remotely Piloted Aircraft Systems (RPAS) used for recreational, sporting and other purposes, may lead to an increase in accidents and incidents involving them. Therefore, it is advisable to raise the awareness of all users, related to safety issues, to harmonize standards and procedures applicable at international and national level. The article presents the legal conditions for unmanned operations and the risk assessment methods used in areas of human activity. On this basis, an original method of risk assessment in unmanned systems was proposed. The method can be part of the operating instructions of the RPAS operator. At the end, final conclusions were drawn up.

Keywords

  • remotely piloted aircraft system
  • risk assessment
  • operational instruction
Open Access

Use of Faultlessness Indicator to Rate Human Reliability in Human – Operating Aircraft System

Published Online: 20 Jun 2019
Page range: 107 - 124

Abstract

Abstract

In the M–T–E (man – technology – environment) system, human has a main influence on aircraft. In the article focused on M–T relations, which means human – technology, more accurately on a man impact on a plane, which is specify as human factor [3]. The role of human in this system can lead to an accident, caused by human mistake. In this article fa main question is how man effects on maintenance aircraft. To purpose the analysis the research was made with use of technical object – a simulator, which is located in Simulator Research Laboratory in Institute of Combustion Engines and Transport at Poznan University of Technology. The subject of analysis was a correctness of performing procedures, which every pilot is obligated to make before start operation. Based on tabular research result the analysis of chosen area was made.

Keywords

  • human mistake
  • aircraft support
  • faultlessness indicator
Open Access

Exploitation of Electronic Devices - Selected Issues

Published Online: 20 Jun 2019
Page range: 125 - 142

Abstract

Abstract

The paper presents basic issues regarding the operation of the electronic device (ED). Electronic device - is a collection of packages (e.g. integrated circuits, processors, memories, etc.) and (or) passive and active electronic components (e.g. resistors, capacitors, transistors, diodes, etc.) that are related to each other in a functional way. By cooperating with each other, they implement a selected useful function that results from the purpose of a given device. The operation process includes technical, administrative and logistical tasks that are undertaken during the ED’s lifetime. The most important goal of all activities is to correctly perform all the functions useful for a given technical object, in this case the ED.

Keywords

  • exploitation
  • electronic devices
  • damage
  • electronic components
Open Access

Analysis of the Electronic Device Exploitation Process – Research Results

Published Online: 20 Jun 2019
Page range: 143 - 163

Abstract

Abstract

The paper presents an analysis of the operation process of the selected electronic device (ED) like tablet type X. The damage of ED is caused by environmental exposure or use contrary to the applicable operating instructions. The damage initiates the process of changing many or one of the usable features of a specific ED. This usually leads to damage, i.e. changes in the properties of components of a specific ED (e.g. touch screen, compact systems, resistors, capacitors, battery cells, etc.). The basic operational indicators of the ED were determined based on the analysis of the type of damage to all devices that were reported to the service center – 2 391 notifications. The research was carried out on the company’s website, and the duration was 15 months from the time of the introduction of the ED to the market.

Keywords

  • damage
  • warranty repair
  • average repair time
Open Access

Reliability and Operating Analysis of Transmission of Alarm Signals of Distributed Fire Signaling System

Published Online: 20 Jun 2019
Page range: 165 - 174

Abstract

Abstract

The article presents basic issues regarding the operation process and analysis of the reliability of the fire alarm and transmission system in the distributed fire alarm system. Signals of fire and fault alarms generated from the fire alarm system (SSP) send fire monitoring. Fire monitoring consists of sending, with the confirmation, an automatic fire alarm and a fault signal to the appropriate alarm receiving centers (ACO). The reliability structure of the fire and fault alarm transmission system is presented. An analysis of reliability of independent SSP system information transmission paths was performed.

Keywords

  • reliability structures
  • fire signalling system
Open Access

Analysis of Selected Parameters of the GPS Receiver Using the Sonex LL Aircraft

Published Online: 20 Jun 2019
Page range: 175 - 207

Abstract

Abstract

This article presents the preparation and performance of tests of a GPS receiver in terms of confirming the selected technical parameters. Due to impossibility to carry out the tests with the use of classic ground methods, an unconventional method that uses a Sonex LL air platform was developed.

Keywords

  • flight tests
  • GPS receiver
  • overload
Open Access

Three-Dimensional Reconstruction of Hand Using Stereoscopic Images

Published Online: 20 Jun 2019
Page range: 209 - 228

Abstract

Abstract

This article is devoted to works on using natural user interfaces (NUI) in computer support systems of aircraft service. The concept of such interfaces involves the usage in human-machine communication the same measures as in the communication between people, that is sound or gesture. In the case of gesture communication, it is indispensable to adopt methods related to computer vision algorithms. One of them is a three-dimensional reconstruction of objects based on processing techniques of a pair of two-dimensional images. The above method and the results of its application were presented to obtain a three-dimensional cloud of points describing the hand shape. The obtained software will constitute an element of gesture classifier based on the analysis of the spatial location of the acquired points of the cloud.

Keywords

  • service of aircraft
  • NUI interfaces
  • computer vision
  • stereoscopy
  • image detection
  • OpenCV library
Open Access

Analysis of the Impact of the Target Illumination Time on the Effectiveness of the Flight Trajectory Correction System

Published Online: 20 Jun 2019
Page range: 229 - 253

Abstract

Abstract

This paper presents method of flight simulations for released laser guided bomb. Calculations were performed using six-degrees-of-freedom mathematical model of a bomb motion. Aerodynamics of the bomb was calculated using commercial software. Control laws were determined on the basis of signals detected by two pairs of laser sensors. Exemplary results of numerical calculations are submitted and conclusions focused on the main factors influencing on bombing accuracy are shown.

Keywords

  • exterior ballistics
  • guided munitions
  • flight control
Open Access

Skid Resistance Properties of Airfield Pavements in the Light of Applicable Normative Rules

Published Online: 20 Jun 2019
Page range: 255 - 280

Abstract

Abstract

Skid resistance properties of airfield pavements substantially affect the safety of the conducted aircraft operations. The evaluation of these properties is not limited to the measurements of friction coefficient defining the friction state of pavement, but also includes the measurements of texture depth of pavement (micro- and macro-texture). The authors focused on the currently applied research methods used to assess the skid resistance properties of airfield pavements. In addition, the requirements in this field and the assessment criteria of the obtained results were also addressed. Example results of field tests and their short analysis were also presented. Besides, it was stressed the direction of further works conducted by the authors, which concerns the development of the research method used to assess the skid resistance properties of airfield pavements, precisely in the field of the measurement of texture depth of pavements.

Keywords

  • airfield pavement
  • surface texture
  • roughness
  • skid resistance properties
Open Access

The Analysis of Using Structural Solutions in Cybersecurity Based on Orchard Operation

Published Online: 20 Jun 2019
Page range: 281 - 298

Abstract

Abstract

The modern battlefield seems to be nothing without the electronic infrastructure. The susceptibility of specific systems to threats from electronic countermeasures or hackers has a substantial influence on the potential conflict. This article describes the measures used by the state of Israel in the field of cybersecurity. Development level of their systems is very high since their relations with neighbours are hostile, constant threat extorted the development of efficient solutions, which were tested on the battlefield. In addition, the article presented the potential course of Orchard operation to demonstrate the correct usage of offensive measures in cyberspace.

Keywords

  • cybersecurity
  • electronic warfare
  • Orchard operation
Open Access

Electromagnetic Interference Issue in Safety Systems Applied at Airports

Published Online: 20 Jun 2019
Page range: 299 - 312

Abstract

Abstract

The proper operation of electronic devices used in transport facilities is possible by protecting them against the effect of adverse electromagnetic fields. At present, all kinds of facilities, including critical infrastructure facilities, intended for functioning in peace conditions and emergency states, are equipped with power systems and numerous electronic devices, including electronic safety systems. On the basis of observing the process of their operation, it can be concluded that an artificially generated intended or unintended electromagnetic field, within various frequency ranges, may negatively affect the operation of electronic devices. It was found that the operation of the electronic safety systems applied at airports may be subject to interference as a result of the impact of adverse electromagnetic fields. Therefore, it is necessary to analyse the impact of electromagnetic interference on the operation of these systems. This article presents a developed author’s operation process model including electromagnetic interference within low frequencies. The reliability and operation analysis of the electronic safety systems carried out by the authors allows for numerical assessment of various types of solutions – both technical and organisational ones. As a result, they can be implemented, in order to minimise the impact of electromagnetic interference on the system functioning. This is a new approach to this issue, as there are currently designed and installed security systems at airports, but there is no analysis of the impact of electromagnetic interference on their functioning. In further research concerning this issue, the authors plan to further develop reliability-operational models, which will differentiate between the states of partial fitness. It will allow for more accurate mapping of the operation of the electronic safety systems which are applicable at airports.

Keywords

  • operation
  • electromagnetic interference
  • safety systems
  • modelling
Open Access

Technology Improving Safety of Crowdfunding Platforms Functioning in the Context of the Protection of the Start-Up Investors in the Financial and Transport Sectors

Published Online: 20 Jun 2019
Page range: 313 - 330

Abstract

Abstract

The information technology models improving security functioning of crowdfunding platforms and advice on a new type of business were developed. The article solves the problem of safety of crowdfunding platform functioning based on developed models: rating assignment system of unified assessment crowdfunding platforms; startup projects assessment; startup projects risk assessment concerning their financing safety level and criminal law protection of investors against the financial fraud. The models are based on the correct usage of fuzzy logic and fuzzy set device to reveal the uncertainty of experts’ consideration that insures authenticity of scientific results.

Keywords

  • crowdfunding platform
  • safety
  • risks
  • criteria, expert evaluation
  • protection of interests
Open Access

Pricing Policy Aspects in Competitive Fight Between Low-Cost Airlines on Kosice Airport

Published Online: 20 Jun 2019
Page range: 331 - 342

Abstract

Abstract

Wizzair was the first low-cost airline to operate at Kosice Airport. From the beginning, it has shown exceptionally good results and the occupancy of its lines has been over 80%. The situation that took place in Vienna forced Wizzair to cancel the base in Kosice and to move the fleet to Vienna. Ryanair takes advantage of this change and enters the market with practically the same line as Wizzair from Kosice to London. The aim of this paper is to describe the situation at Kosice airport. The competitive fight between these two companies is visible from the very first moment when Ryanair introduced its flights at a much better price than Wizzair. The paper also focuses on the comparing these prices and fares as well as the profit over the period under review.

Keywords

  • Ryanair
  • Wizzair
  • competition
  • fare
Open Access

Identification and Analysis of Information Surplus in Aeronautical Systems

Published Online: 20 Jun 2019
Page range: 343 - 368

Abstract

Abstract

This article is a continuation of the Authors’ study on issues concerning safety of aeronautical data and information. This time, however, the main focus was placed on identification and analysis of information surplus in aeronautical systems. After a short introduction the redundant reliability structure was characterised and types of excesses used in aeronautical systems were distinguished. Special attention was paid to the title information surplus. Then, aeronautical data and information were described – the purpose and forms of their publication and the fundamental categories of aeronautical data and information were identified. In the following part of the publication, information surpluses for indicated categories of aeronautical data and information, published in various forms, were identified and the risk profile of information surplus appearance was analysed. The whole article was summed up with conclusions. Analysed issues will be the subject of Authors’ further study.

Keywords

  • information surplus
  • aeronautical data and information
  • safety
  • reliability
Open Access

Rapid Prototyping and Tooth Contact Analysis of Eccentric Cycloid Gear Mesh

Published Online: 20 Jun 2019
Page range: 369 - 382

Abstract

Abstract

This paper presents a mathematical model and tooth contact analysis of eccentric cycloid gear mesh. Numerical simulations aimed at generating contact pattern for a sample gear pair were performed. Contact pattern was also determined for gear wheels made by additive fabrication from transparent light-activated resin.

Keywords

  • tooth contact analysis
  • eccentric cycloid gear engagement
  • rapid prototyping
Open Access

Selected Practical Aspects of Communication Diagnosis in the Industrial Network

Published Online: 20 Jun 2019
Page range: 383 - 404

Abstract

Abstract

Industrial networks combine elements of distributed control systems: process stations, operator stations and engineering stations. DCS stations often communicate using a dedicated, closed communication protocol. The industrial networks can be also used to manage communication between the stations of various systems, separate in terms of configuration. The process station communicates here with an external operator station, that is the SCADA system. For this purpose, the process stations and the SCADA systems can also communicate according to standard communication protocols, e.g. Modbus TCP. The paper examines the selected variants of diagnosing the communication status between the process station and the external operator station conducted according to the Modbus TCP protocol. The practical methods of finding the communication system unfitness causes are discussed.

Keywords

  • communication diagnosis
  • data transmission system
  • industrial network
Open Access

An Analysis and Testing of Functional Availability Military Vehicles, in the Aspect of Reliability

Published Online: 20 Jun 2019
Page range: 405 - 423

Abstract

Abstract

The paper pertains to matters related to the quantification of functional availability of military vehicles, with reference to exploitation intensity and reliability aspects. The conducted exploitation research paved the way for elaborating methods of determining functional availability for military vehicles, in particular focusing on exploitation intensity and reliability. The essential research was conducted using the developed mathematical model based on the probabilistic, stochastic Markov process, which allowed modelling the process of changes in the exploitation states of military vehicles. In the course of the research, which enabled the authors to estimate the functional availability value, four-layered probes of the military vehicles were used (different types and makes), from the second exploitation phase, with varied mileage from the beginning of the exploitation and average mileage per year.

Keywords

  • military vehicle
  • availability
  • reliability
Open Access

Predicting Costs of City Buses’ Incapacity Risk

Published Online: 20 Jun 2019
Page range: 425 - 448

Abstract

Abstract

The paper describes operational efficiency research of city buses from two manufacturers during the 6 years of operation under real conditions. The presented operational efficiency assessment model includes unplanned incidental repairs costs, downtime costs, as well as the likelihood of losing customer-passenger’s trust. The results of the efficiency calculations were used to estimate the expected costs of buses’ incapacity risk. It has been demonstrated that the operational efficiency and incapacity risk costs can be a criterion for the optimal period of operation, as well as the criterion of comparison of bus makes in a transport company.

Keywords

  • reliability
  • public transport
  • operational efficiency
22 Articles
Open Access

The Effective Identification of Objects in Selected Areas of Transport Transhipment

Published Online: 20 Jun 2019
Page range: 7 - 30

Abstract

Abstract

The dynamic evolution of techniques and networking technologies finds its application not only in the traditional networks and IT systems but is also possible to be successfully implemented in highly professional implementations of the logistics sector. The authors conducted a multi-faceted analysis and focused on the technical aspect associated with the selected components of logistics, i.e. storage, handling and transport. Ensuring efficient transhipment, with possible numerous and unwanted anomalies is particularly difficult when there may be numerous and unwanted anomalies. Technical objects and people changing the means of transport should achieve this in a reliable and safe way. Hence the need for continuous and effective monitoring of ongoing processes, based on a highly reliable monitoring system (MS). The article presents the concept of using a complex MS for the purpose of effective identification of objects and events.

Keywords

  • surveillance
  • identification
  • reliability
  • UAV
Open Access

Dynamic Bayesian Network for Reliability of Mechatronic System with Taking Account the Multi-Domain Interaction

Published Online: 20 Jun 2019
Page range: 31 - 46

Abstract

Abstract

This article presents a methodology for reliability prediction during the design phase of mechatronic system considered as an interactive dynamic system. The difficulty in modeling reliability of a mechatronic system is mainly due to failures related to the interaction between the different domains called Multi-domain interaction. Therefore in this paper, after a presentation of the state of the art of mechatronic systems reliability estimation methods, we propose a original approach by representing multi domain interactions by influential factors in the dysfunctional modeled by Dynamic Bayesian Networks. A case study demonstrates the interest of the proposed approach.

Keywords

  • Predictive Reliability
  • Quantitative modeling
  • Dynamic Hybrid System
  • Mechatronics
  • Multi-domain Interactions
  • Dynamic Bayesian Network
Open Access

Safety of Sea Vessels in the Aspect of Model Research

Published Online: 20 Jun 2019
Page range: 47 - 68

Abstract

Abstract

The article presents a modern method of modeling stability and unsinkability of vessels using physical models of warships and merchant ships. Model tests of watercraft are carried out primarily to assess their marine properties in various operational states. The purpose of this research is to create technically useful calculation methods for forecasting the behavior of a vessel at sea in various meteorological conditions. The main role played by model tests and measurements on real objects is the verification of these methods. Both types of experiments are also a source of inspiration for creating new modified mathematical models and accounting methods based on them. These tests can contribute to the improvement of the safety of vessels at sea.

Keywords

  • model research
  • ship
  • ship stability
Open Access

Evaluation of Train Crews Schedule in Terms of Robustness

Published Online: 20 Jun 2019
Page range: 69 - 94

Abstract

Abstract

The evaluation of team work schedules in complex rail transport conditions is related to the robustness of individual solutions. In rail systems there are many aims that are important for users. One of the most important aims is to find a feasible solution. It is characterized by the non-conflicting schedule with another train, minimizing the travel time of the trainset and taking into account the priority of train. The problem of responding to delays in terms of reorganisation of work, prevention of delay propagation and real-time schedule changes is important. Schedules are built in a way that ensures the best use of work time. This has a negative impact on critical situations. The study analysed the changes of the conductor’s team to another train depending on the buffer time provided in work plan, real time needed for change and train delays.

Keywords

  • scheduling
  • robustness
  • rating
Open Access

Risk Assessment of Remotely Piloted Aircraft Systems

Published Online: 20 Jun 2019
Page range: 95 - 106

Abstract

Abstract

The intensive growth in the popularity of Remotely Piloted Aircraft Systems (RPAS) used for recreational, sporting and other purposes, may lead to an increase in accidents and incidents involving them. Therefore, it is advisable to raise the awareness of all users, related to safety issues, to harmonize standards and procedures applicable at international and national level. The article presents the legal conditions for unmanned operations and the risk assessment methods used in areas of human activity. On this basis, an original method of risk assessment in unmanned systems was proposed. The method can be part of the operating instructions of the RPAS operator. At the end, final conclusions were drawn up.

Keywords

  • remotely piloted aircraft system
  • risk assessment
  • operational instruction
Open Access

Use of Faultlessness Indicator to Rate Human Reliability in Human – Operating Aircraft System

Published Online: 20 Jun 2019
Page range: 107 - 124

Abstract

Abstract

In the M–T–E (man – technology – environment) system, human has a main influence on aircraft. In the article focused on M–T relations, which means human – technology, more accurately on a man impact on a plane, which is specify as human factor [3]. The role of human in this system can lead to an accident, caused by human mistake. In this article fa main question is how man effects on maintenance aircraft. To purpose the analysis the research was made with use of technical object – a simulator, which is located in Simulator Research Laboratory in Institute of Combustion Engines and Transport at Poznan University of Technology. The subject of analysis was a correctness of performing procedures, which every pilot is obligated to make before start operation. Based on tabular research result the analysis of chosen area was made.

Keywords

  • human mistake
  • aircraft support
  • faultlessness indicator
Open Access

Exploitation of Electronic Devices - Selected Issues

Published Online: 20 Jun 2019
Page range: 125 - 142

Abstract

Abstract

The paper presents basic issues regarding the operation of the electronic device (ED). Electronic device - is a collection of packages (e.g. integrated circuits, processors, memories, etc.) and (or) passive and active electronic components (e.g. resistors, capacitors, transistors, diodes, etc.) that are related to each other in a functional way. By cooperating with each other, they implement a selected useful function that results from the purpose of a given device. The operation process includes technical, administrative and logistical tasks that are undertaken during the ED’s lifetime. The most important goal of all activities is to correctly perform all the functions useful for a given technical object, in this case the ED.

Keywords

  • exploitation
  • electronic devices
  • damage
  • electronic components
Open Access

Analysis of the Electronic Device Exploitation Process – Research Results

Published Online: 20 Jun 2019
Page range: 143 - 163

Abstract

Abstract

The paper presents an analysis of the operation process of the selected electronic device (ED) like tablet type X. The damage of ED is caused by environmental exposure or use contrary to the applicable operating instructions. The damage initiates the process of changing many or one of the usable features of a specific ED. This usually leads to damage, i.e. changes in the properties of components of a specific ED (e.g. touch screen, compact systems, resistors, capacitors, battery cells, etc.). The basic operational indicators of the ED were determined based on the analysis of the type of damage to all devices that were reported to the service center – 2 391 notifications. The research was carried out on the company’s website, and the duration was 15 months from the time of the introduction of the ED to the market.

Keywords

  • damage
  • warranty repair
  • average repair time
Open Access

Reliability and Operating Analysis of Transmission of Alarm Signals of Distributed Fire Signaling System

Published Online: 20 Jun 2019
Page range: 165 - 174

Abstract

Abstract

The article presents basic issues regarding the operation process and analysis of the reliability of the fire alarm and transmission system in the distributed fire alarm system. Signals of fire and fault alarms generated from the fire alarm system (SSP) send fire monitoring. Fire monitoring consists of sending, with the confirmation, an automatic fire alarm and a fault signal to the appropriate alarm receiving centers (ACO). The reliability structure of the fire and fault alarm transmission system is presented. An analysis of reliability of independent SSP system information transmission paths was performed.

Keywords

  • reliability structures
  • fire signalling system
Open Access

Analysis of Selected Parameters of the GPS Receiver Using the Sonex LL Aircraft

Published Online: 20 Jun 2019
Page range: 175 - 207

Abstract

Abstract

This article presents the preparation and performance of tests of a GPS receiver in terms of confirming the selected technical parameters. Due to impossibility to carry out the tests with the use of classic ground methods, an unconventional method that uses a Sonex LL air platform was developed.

Keywords

  • flight tests
  • GPS receiver
  • overload
Open Access

Three-Dimensional Reconstruction of Hand Using Stereoscopic Images

Published Online: 20 Jun 2019
Page range: 209 - 228

Abstract

Abstract

This article is devoted to works on using natural user interfaces (NUI) in computer support systems of aircraft service. The concept of such interfaces involves the usage in human-machine communication the same measures as in the communication between people, that is sound or gesture. In the case of gesture communication, it is indispensable to adopt methods related to computer vision algorithms. One of them is a three-dimensional reconstruction of objects based on processing techniques of a pair of two-dimensional images. The above method and the results of its application were presented to obtain a three-dimensional cloud of points describing the hand shape. The obtained software will constitute an element of gesture classifier based on the analysis of the spatial location of the acquired points of the cloud.

Keywords

  • service of aircraft
  • NUI interfaces
  • computer vision
  • stereoscopy
  • image detection
  • OpenCV library
Open Access

Analysis of the Impact of the Target Illumination Time on the Effectiveness of the Flight Trajectory Correction System

Published Online: 20 Jun 2019
Page range: 229 - 253

Abstract

Abstract

This paper presents method of flight simulations for released laser guided bomb. Calculations were performed using six-degrees-of-freedom mathematical model of a bomb motion. Aerodynamics of the bomb was calculated using commercial software. Control laws were determined on the basis of signals detected by two pairs of laser sensors. Exemplary results of numerical calculations are submitted and conclusions focused on the main factors influencing on bombing accuracy are shown.

Keywords

  • exterior ballistics
  • guided munitions
  • flight control
Open Access

Skid Resistance Properties of Airfield Pavements in the Light of Applicable Normative Rules

Published Online: 20 Jun 2019
Page range: 255 - 280

Abstract

Abstract

Skid resistance properties of airfield pavements substantially affect the safety of the conducted aircraft operations. The evaluation of these properties is not limited to the measurements of friction coefficient defining the friction state of pavement, but also includes the measurements of texture depth of pavement (micro- and macro-texture). The authors focused on the currently applied research methods used to assess the skid resistance properties of airfield pavements. In addition, the requirements in this field and the assessment criteria of the obtained results were also addressed. Example results of field tests and their short analysis were also presented. Besides, it was stressed the direction of further works conducted by the authors, which concerns the development of the research method used to assess the skid resistance properties of airfield pavements, precisely in the field of the measurement of texture depth of pavements.

Keywords

  • airfield pavement
  • surface texture
  • roughness
  • skid resistance properties
Open Access

The Analysis of Using Structural Solutions in Cybersecurity Based on Orchard Operation

Published Online: 20 Jun 2019
Page range: 281 - 298

Abstract

Abstract

The modern battlefield seems to be nothing without the electronic infrastructure. The susceptibility of specific systems to threats from electronic countermeasures or hackers has a substantial influence on the potential conflict. This article describes the measures used by the state of Israel in the field of cybersecurity. Development level of their systems is very high since their relations with neighbours are hostile, constant threat extorted the development of efficient solutions, which were tested on the battlefield. In addition, the article presented the potential course of Orchard operation to demonstrate the correct usage of offensive measures in cyberspace.

Keywords

  • cybersecurity
  • electronic warfare
  • Orchard operation
Open Access

Electromagnetic Interference Issue in Safety Systems Applied at Airports

Published Online: 20 Jun 2019
Page range: 299 - 312

Abstract

Abstract

The proper operation of electronic devices used in transport facilities is possible by protecting them against the effect of adverse electromagnetic fields. At present, all kinds of facilities, including critical infrastructure facilities, intended for functioning in peace conditions and emergency states, are equipped with power systems and numerous electronic devices, including electronic safety systems. On the basis of observing the process of their operation, it can be concluded that an artificially generated intended or unintended electromagnetic field, within various frequency ranges, may negatively affect the operation of electronic devices. It was found that the operation of the electronic safety systems applied at airports may be subject to interference as a result of the impact of adverse electromagnetic fields. Therefore, it is necessary to analyse the impact of electromagnetic interference on the operation of these systems. This article presents a developed author’s operation process model including electromagnetic interference within low frequencies. The reliability and operation analysis of the electronic safety systems carried out by the authors allows for numerical assessment of various types of solutions – both technical and organisational ones. As a result, they can be implemented, in order to minimise the impact of electromagnetic interference on the system functioning. This is a new approach to this issue, as there are currently designed and installed security systems at airports, but there is no analysis of the impact of electromagnetic interference on their functioning. In further research concerning this issue, the authors plan to further develop reliability-operational models, which will differentiate between the states of partial fitness. It will allow for more accurate mapping of the operation of the electronic safety systems which are applicable at airports.

Keywords

  • operation
  • electromagnetic interference
  • safety systems
  • modelling
Open Access

Technology Improving Safety of Crowdfunding Platforms Functioning in the Context of the Protection of the Start-Up Investors in the Financial and Transport Sectors

Published Online: 20 Jun 2019
Page range: 313 - 330

Abstract

Abstract

The information technology models improving security functioning of crowdfunding platforms and advice on a new type of business were developed. The article solves the problem of safety of crowdfunding platform functioning based on developed models: rating assignment system of unified assessment crowdfunding platforms; startup projects assessment; startup projects risk assessment concerning their financing safety level and criminal law protection of investors against the financial fraud. The models are based on the correct usage of fuzzy logic and fuzzy set device to reveal the uncertainty of experts’ consideration that insures authenticity of scientific results.

Keywords

  • crowdfunding platform
  • safety
  • risks
  • criteria, expert evaluation
  • protection of interests
Open Access

Pricing Policy Aspects in Competitive Fight Between Low-Cost Airlines on Kosice Airport

Published Online: 20 Jun 2019
Page range: 331 - 342

Abstract

Abstract

Wizzair was the first low-cost airline to operate at Kosice Airport. From the beginning, it has shown exceptionally good results and the occupancy of its lines has been over 80%. The situation that took place in Vienna forced Wizzair to cancel the base in Kosice and to move the fleet to Vienna. Ryanair takes advantage of this change and enters the market with practically the same line as Wizzair from Kosice to London. The aim of this paper is to describe the situation at Kosice airport. The competitive fight between these two companies is visible from the very first moment when Ryanair introduced its flights at a much better price than Wizzair. The paper also focuses on the comparing these prices and fares as well as the profit over the period under review.

Keywords

  • Ryanair
  • Wizzair
  • competition
  • fare
Open Access

Identification and Analysis of Information Surplus in Aeronautical Systems

Published Online: 20 Jun 2019
Page range: 343 - 368

Abstract

Abstract

This article is a continuation of the Authors’ study on issues concerning safety of aeronautical data and information. This time, however, the main focus was placed on identification and analysis of information surplus in aeronautical systems. After a short introduction the redundant reliability structure was characterised and types of excesses used in aeronautical systems were distinguished. Special attention was paid to the title information surplus. Then, aeronautical data and information were described – the purpose and forms of their publication and the fundamental categories of aeronautical data and information were identified. In the following part of the publication, information surpluses for indicated categories of aeronautical data and information, published in various forms, were identified and the risk profile of information surplus appearance was analysed. The whole article was summed up with conclusions. Analysed issues will be the subject of Authors’ further study.

Keywords

  • information surplus
  • aeronautical data and information
  • safety
  • reliability
Open Access

Rapid Prototyping and Tooth Contact Analysis of Eccentric Cycloid Gear Mesh

Published Online: 20 Jun 2019
Page range: 369 - 382

Abstract

Abstract

This paper presents a mathematical model and tooth contact analysis of eccentric cycloid gear mesh. Numerical simulations aimed at generating contact pattern for a sample gear pair were performed. Contact pattern was also determined for gear wheels made by additive fabrication from transparent light-activated resin.

Keywords

  • tooth contact analysis
  • eccentric cycloid gear engagement
  • rapid prototyping
Open Access

Selected Practical Aspects of Communication Diagnosis in the Industrial Network

Published Online: 20 Jun 2019
Page range: 383 - 404

Abstract

Abstract

Industrial networks combine elements of distributed control systems: process stations, operator stations and engineering stations. DCS stations often communicate using a dedicated, closed communication protocol. The industrial networks can be also used to manage communication between the stations of various systems, separate in terms of configuration. The process station communicates here with an external operator station, that is the SCADA system. For this purpose, the process stations and the SCADA systems can also communicate according to standard communication protocols, e.g. Modbus TCP. The paper examines the selected variants of diagnosing the communication status between the process station and the external operator station conducted according to the Modbus TCP protocol. The practical methods of finding the communication system unfitness causes are discussed.

Keywords

  • communication diagnosis
  • data transmission system
  • industrial network
Open Access

An Analysis and Testing of Functional Availability Military Vehicles, in the Aspect of Reliability

Published Online: 20 Jun 2019
Page range: 405 - 423

Abstract

Abstract

The paper pertains to matters related to the quantification of functional availability of military vehicles, with reference to exploitation intensity and reliability aspects. The conducted exploitation research paved the way for elaborating methods of determining functional availability for military vehicles, in particular focusing on exploitation intensity and reliability. The essential research was conducted using the developed mathematical model based on the probabilistic, stochastic Markov process, which allowed modelling the process of changes in the exploitation states of military vehicles. In the course of the research, which enabled the authors to estimate the functional availability value, four-layered probes of the military vehicles were used (different types and makes), from the second exploitation phase, with varied mileage from the beginning of the exploitation and average mileage per year.

Keywords

  • military vehicle
  • availability
  • reliability
Open Access

Predicting Costs of City Buses’ Incapacity Risk

Published Online: 20 Jun 2019
Page range: 425 - 448

Abstract

Abstract

The paper describes operational efficiency research of city buses from two manufacturers during the 6 years of operation under real conditions. The presented operational efficiency assessment model includes unplanned incidental repairs costs, downtime costs, as well as the likelihood of losing customer-passenger’s trust. The results of the efficiency calculations were used to estimate the expected costs of buses’ incapacity risk. It has been demonstrated that the operational efficiency and incapacity risk costs can be a criterion for the optimal period of operation, as well as the criterion of comparison of bus makes in a transport company.

Keywords

  • reliability
  • public transport
  • operational efficiency

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