Temat: Aviation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A study of aviation incidents involving military aircraft
Autorzy:: Jemielniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/246574.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation accident investigation
aviation-related events
Opis:: This paper presents a flight safety analysis over the past a dozen or so years. The analysis was mostly conducted on the basis of statistical data recorded by units responsible for flight safety in the Armed Forces of the Republic of Poland. The first part of the paper presents a brief historic outline and basic flight safety-related definitions. It also describes basic elements of flight safety formulated by the International Civil Aviation Organisation, ICAO. It presents theories providing reasons for the occurrence of aviation incidents and1 the role of a human factor in flight safety and at the same time makes known so called James Reason's Model that explains why aviation accidents occur. In addition, it includes a few examples of the occurrence of serious accidents caused by the human factor. It also emphasises the importance of the system of aviation-related events reporting and investigation and the planning of preventive actions to be taken. The paper also stresses the need to change the way of thinking about aviation accident prevention, where the most important questions are not what or who, but why and how. The second part of the paper presents flight safety analysis in the Armed Forces for the previous year.
Źródło:: Journal of KONES; 2014, 21, 2; 127-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Advantages of compressor downstream air partial bleed and supplying it downstream of the turbine in a turbojet engine
Autorzy:: Ćwik, D.
Kowalski, M.
Stężycki, P.
Powiązania:: https://bibliotekanauki.pl/articles/247092.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation engine operating parameters
jet engine designs
aviation engine air bleed
Opis:: The research article discusses the advantages of using compressor downstream air partial bleed and supplying it downstream of the turbine, which was applied in a prototype of a “bypass” turbojet engine. The objective of such a turbo engine structural solution was discussed along with its elements and principle of operation. Further part of the article determines the impact of such partial air bleed on the value of achieved basic operating parameters of the engine, i.e., unit thrust and unit power consumption. The presented attempt to compare these parameters with the parameters achieved for a turbojet, single flow engine is very important; in the first case without air bleed, and in the second, with air bleed to the environment. Further sections of the article compared these parameters relative to a turbojet, turbofan engine with a jet mixer. Such comparisons enabled to determine the actual benefits of using compressor downstream air partial bleed and supplying it downstream of the turbine, which may constitute an intermediate solution between single flow turbine engines and turbo fan engines. Wide possibilities for the application of such structural solutions were shown, which was summarised in the conclusions.
Źródło:: Journal of KONES; 2018, 25, 4; 501-508
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of selected parameters influence on failure in metal-composite mechanical joint
Autorzy:: Puchała, K.
Powiązania:: https://bibliotekanauki.pl/articles/242244.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanical joint
CRFP
aviation
FEM
Opis:: The never-ending attempt to obtain as low mass as possible is the reason for using material of high specific strength (stiffness) in the aerospace industry. High strength titanium or aluminium alloys (e.g. 2024T3) and composite laminates (e.g. CFRP or Glare) are the examples of such materials. Despite a large number of composite types, fibre reinforced composites in the form of laminates are commonly used in aircraft structures. One-half of modern aircrafts is made of composites. However, the second one is still made of metallic alloys. The usage of different materials in aircraft structures results in the necessity of joining composite and metallic components. There are three connection methods for aircraft primary structures: mechanical (riveting, bolting), adhesive (bonding) and hybrid where both mentioned methods are used. The paper deals with metal-composite mechanical joint. Although fibre reinforced composites have high tensile strength, the load transfer in mechanical joints of such components is limited. Strength of composite laminates is dependent on the joint geometry; however, it is strongly influenced by laminate lay-up. There are five global failure modes for mechanically fastened composite laminates: tension, bearing, shear-out, cleavage and pull-through. The bearing failure mechanism is a safe progressive mechanism not leading to catastrophic failure and therefore it is acceptable. Problems with strength assessment of composite mechanical joints are drawn. Some geometrical (joint width), material (bolt material, stacking sequence) as well as numerical parameters (failure criterion) are analysed.
Źródło:: Journal of KONES; 2014, 21, 1; 223-232
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: About mechanical joints design in metal - composite structure
Autorzy:: Puchała, K.
Szymczyk, E.
Jachimowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/246795.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanical joint
adhesive joint
FEA
aviation
Opis:: Riveting is still one of the main joining methods of thin-walled aircraft structures. Such features as simplicity of implementation, possibility of two different material connection (e.g. metallic with non-metallic ones) and the fact that is it a well-known (reliable) method causes popularity of riveting. The never-ending attempt to obtain as low mass as possible (mainly to reduce fuel consumption) is the reason for using material of high specific strength in the aerospace industry. High strength titanium or aluminium alloys (e.g. 2024T3) and composite laminates (e.g. CFRP or Glare) are examples of such materials. The article deals with methods of connecting various materials. The paper presents advantages and disadvantages of different/selected connection types. Strength prediction and failure modes of mechanical joints are described for metallic as well as for composite components. Composites are complex materials having an anisotropic structure (and anisotropic mechanical properties) leading to various failure mechanisms. Main principles for appropriate joint design of composite laminate panels (laminate configuration and typical/specific geometrical dimensions) are indicated/specified. The bearing failure mechanism is accepted to be a safe progressive one. Mechanism of bearing (generally compressive) load transfer into composite laminates by shear of the matrix is analysed. Some examples of improvement bearing strength of laminates are presented according to literature. On the base of presented examples and bearing load transfer analysis, some conclusions for an appropriate solution of this problem are drawn.
Źródło:: Journal of KONES; 2012, 19, 3; 381-390
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analysis of hazards occurring during the use of hydrazine
Autorzy:: Janeba-Bartoszewicz, E.
Rojewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/246926.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation fuel
hydrazine
airport rescue group
Opis:: The article presents the safety issue bonded to the Polish Air Force F-16 multirole aircraft. The authors pointed out the issue of fuel used for emergency supply system of these aircrafts. The article emphasized the fact that these aircrafts require special fuel with designation H-70, which is 70% aqueous solution of toxic hydrazine. For this reason, the rescue services of Polish Air Force bases where Polish F-16 are stationed had to be adjusted accordingly. Just as importantly, authors noticed that in the event of an emergency landing of this aircraft at different airports could receive difficulties associated with the possible leakage of hydrazine, or its neutralization in the absence of specialized Hydrazine Response Team, which are part of the Airport Rescue Group. After the introduction of new aircraft for use in the Polish Air Force (in this case F-16 multirole aircraft), it is necessary to analyse the safety of their use in the context of potential places on which they can land. This is related, among others, to the safety of managing liquid fuels. In the case of F-16 aircraft, one must bear in mind besides the F-34 fuel, also hydrazine (H- 70). The article presents a functional diagram of EPU system of emergency power supply EPS of F-16 multirole aircraft.
Źródło:: Journal of KONES; 2018, 25, 4; 149-154
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Field repairs of aircraft engines
Autorzy:: Cwojdziński, L.
Lewitowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/241779.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
aviation
aircraft
field repairs
optimization
Opis:: The challenge to the manufacturer or service provider is how to assess and define true customer expectations and then how to design, manufacture and sell the product to best meet those expectations. Each product must provide operational capabilities, which allow military forces to maintain technical and logistic superiority over a potential adversary even if it is just natural or induced environment, which can be expected over the operating and maintenance portion of life cycle. Battle damage repair is a critical factor in managing operation. We acknowledge that traditional cost minimizing measures are not always central and other performance measures such as time of repair, reliability and availability become more relevant. Assessing aircraft damages in the field and making appropriate decisions on the reparability, making repairs at the lowest repair level possible and evaluating airworthiness of subsequent repairs is critical to the air forces maintaining its force projection capability. Among other, combat damage of helicopters, damaged areas and erosion on leading edges of the compressor first stage rotor blades, achievable and optimum solution, goal function – duration minimisation, goal function – cost minimisation are presented in the paper.
Źródło:: Journal of KONES; 2012, 19, 4; 131-138
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Butanol/biobutanol as a component of an aviation and diesel fuel
Autorzy:: Dzięgielewski, W.
Gawron, W.
Kaźmierczak, U.
Kulczycki, A.
Powiązania:: https://bibliotekanauki.pl/articles/247384.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation
diesel fuels
biocomponents
CO2 emission
Opis:: This paper describes the analysis and conclusions regarding the use of butanol/biobutanol as a component of conventional mineral fuels employed in different areas of transportation. Butanol from biomass - biobutanol is interesting as biocomponent of gasoline, diesel fuel as well as aviation fuels. This is especially important in case of air transport, which is the carbon dioxide emission source of the fastest growth. Biobutanol is tested as biocomponent of gasoline, including aviation ones, but there are no information about biobutanol added to mineral Jet fuel as well as diesel fuel. Direction of research conducted by leading aviation companies indicates that hydrocarbon biocomponent will be main biofuel used as aviation turbine fuel. One of reported technology is focused on use of butane-1-ol as semi-finished products for isoparaffinic hydrocarbons generation that then would be used for aviation turbine fuels production. In order to do such analysis the preliminary lab testing of blends of butanol isomers with aviation fuel Jet A-1 and diesel fuel were performed. The paper contains the results of standard tests for blends of mineral fuels with butane-1-ol and butane-2-ol added in concentration of 0-20 %(V/V). Both the advantages and disadvantages regarding the use of such component of mineral fuels are presented. Butanol decreases value of flash point and significantly influence on conductivity of Jet fuel. In case of aviation fuel for turbine engines, and diesel fuel, the restrictions regarding direct use of butanol are important. However, butanol can be treated as semi-finished material for synthesizing of biohydrocarbons used in above applications.
Źródło:: Journal of KONES; 2014, 21, 2; 69-75
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Flight path management of an aircraft in emergency situation
Autorzy:: Majka, A.
Powiązania:: https://bibliotekanauki.pl/articles/248107.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: general aviation
flight path optimization
flight safety
Opis:: A distress event i.e. loss of engine power, structural damage etc., creates a major emergency situation in General Aviation (GA) aircraft. It requires location of a safe-to-land runway within reach, and immediately planning and executing an effective flight path towards it. Currently, technological development in avionics allows creating a flight deck decision support tool for trajectory planning of GA aircraft in emergency situation. Principal part of the system constitutes flight path optimization module. The automated path-planning algorithm generates within seconds an optimized trajectory to be followed by the pilot to safe landing. The trajectory planning is formulated as an optimal control problem, with the aircraft kinematics and dynamics expressed by the state equations, and objective functional that may capture the time, length, energy loss, etc. Obstacles and restricted or prohibited zones are represented as constraints on the positional state variables. The purpose of the paper is to present the method of flight path optimization of an aircraft in emergency, after a distress event, which makes impossible continuation of the original flight. The methods allow determining optimal escape flight path from special protection areas (e.g. cities etc.) or danger zones, as well. The simplified realization of the Ritz-Galerkin method was used in this work, which uses an approximate solution to boundary value problems for determining the optimal flight trajectory. The method allows determining the optimal trajectory of the flight satisfying the initial/final conditions and control functions and path constrains for an aircraft.
Źródło:: Journal of KONES; 2014, 21, 4; 327-334
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Application of a magnetorheological elastomer in an aviation structure
Autorzy:: Skalski, P.
Powiązania:: https://bibliotekanauki.pl/articles/241999.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: magnetorheological elastomer
aviation structure
experiments
test stand
Opis:: Magnetorheological elastomers have properties that can be altered by magnetic field. Many materials were invented more than 30 years ago, but their development and improvement over the past three decades has led to new, more varied uses of these adaptable materials. The main goal of the paper is to present and investigate the application of a magnetorheological elastomer in an aviation structure. The potential advantage of this solution is a possibility to adjust the shape of the wing during the flight by altering the magnetic field strength, which in turn causes deflection of a magnetorheological elastomer. For the purpose of the investigations, an E214 aerofoil has been selected. The original, carbon composite model set a reference value of both lift and drag coefficient for an E214 profile. A thin layer of magnetorheological elastomer was placed on the upper side of the reversed wing. In order to fully understand the effect of such structural change on an aerial profile, the new research stand was designed and manufactured for the purpose of this research in the Institute of Aviation. Experiments were conducted due to evaluate the influence of magnetorheological elastomer on the overall performance. Results of investigations were presented and discussed.
Źródło:: Journal of KONES; 2016, 23, 3; 449-455
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: 2019Gyroplane rotor hubs strength tests
Autorzy:: Wojtas, Małgorzata
Sobieszek, Agnieszka
Powiązania:: https://bibliotekanauki.pl/articles/242059.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gyroplane
strength tests
rotor hub
aviation regulations
Opis:: In this article a review of rotor,hub constructions were presented. Discussed rotor’s hub ismade of composite or aluminum alloys materials. Two types of rotor hub were presented (four-blades and two-blades teetering rotor hub), each of them are dedicated to gyroplanes. Typical gyroplane main rotors are characterized by simple design, especially in case of rotors forlight gyroplanes. In the following part of the article thetype of strength tests required by certification process were shown. The test programs based on legal aspects of admission to the flight tests taking into account legislation such as CS 27 (Subpart C – Strength Requirements), CAP 643 British Civil Airworthiness requirements Section T Light gyroplanes, ASTM F2972. Furthermore, this articlediscusses strength tests of gyroplane rotor hub such as measured parameters, methodology of measurement, types of sensors, course of test, test stands, and limit loads. The loads during “pull-up from level flight” manoeuvreare limit loads during tests. Required additional processes, like averification the same parameters by two types of method were shown i.e.deformation of structure were tested by strain gauges and reverse engineering.Strength tests had to be made before flight test, based on results of them aircrafts are flight authorized. In conclusion,the results of tests were presented and fulfilment of legal assumptions and requirements were shown.
Źródło:: Journal of KONES; 2019, 26, 3; 265-270
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Python programming language as a tool for creating three-dimensional figures of glider aerobatics
Autorzy:: Linka, A.
Wróblewska, A.
Powiązania:: https://bibliotekanauki.pl/articles/241817.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aerobatics
general aviation
fly trajectory
mathematical programming
Opis:: The article presents the possibilities and validity of the implementation in the field of developing mathematical models for aerobatics trajectory. Proposing a catalogue of three-dimensional figures and those described mathematically will allow improving judging and scoring level, as well as the art of piloting in aerobatics. In the first chapter, article describes the processes of aerobatic flight, judge evaluation method and the current state of technology supporting the scoring process. The second chapter presents the capabilities of the Python programming language, which will be a tool for the construction of three-dimensional models. The third chapter of this article is a description of the comparative analysis of ideal trajectories and obtained in real flight. This chapter also demonstrates the validity and necessity of introducing new standards for assessing aerobatic flights. Aerobatics flights and judging, intelligent system to control aerobatic flights, three-dimensional models of aerobatic flights are presented in the article. The article concerns on use modern technologies to support the judges during the competition. The introduction of ASSD + PL system and the possibility of implementing designed models of aerobatic figures open new paths for improving the art of pilotage and arbitration.
Źródło:: Journal of KONES; 2018, 25, 4; 247-253
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The analysis of chosen technological parameters in the process of manufacturing components of landing gear of structural post aircraft
Autorzy:: Boś, P.
Hakim, M.
Budzik, G.
Rybak, M.
Powiązania:: https://bibliotekanauki.pl/articles/950100.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
aviation
landing gear
measuring method
engineering
Opis:: High quality of components used in constructions of Landing Gears forces the manufacturers to choose appropriate technologies in order to manufacture and control dimensions of particular details. It is especially difficult to predict how the elements of huge dimensions will act during heat treat and chemical processing. The changes in size and. shape of the elements of suspension of STRUCTURAL POST aircraft are connected with hardening stresses. This requires accurate determining of allowance of final machining. The analysis of processing parameters and manufacturing of a precise component is possible with the use of high-tech coordinate measuring techniques based on touch and untouched measurements . The highest quality of machines used in manufacturing and measuring as well as innovative technologies used during the process of manufacturing STRUCTURAL POST components result in effects assumed by the designing engineer. The aim of this article is to present issues connected with technological process of manufacturing STRUCTURAL POST components as well as the analysis of particular parameters of manufacturing process which have an impact on the accuracy of dimensions and shape of the final product. These parameters are also responsible for functionality, operational reliability and safety of the Landing Gear.
Źródło:: Journal of KONES; 2013, 20, 1; 23-28
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Complex management system of the aviation training process
Autorzy:: Jemielniak, M.
Kowalski, M.
Powiązania:: https://bibliotekanauki.pl/articles/245390.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation training system
pilot training
pilot education system
Opis:: This paper concerns the issue of management and assessment of the aviation training process, which takes into account the elements changing over time: the state of training, its level, quality and mechanisms rationalising the organisational activities and costs. The elements of the complex management system of the aviation training process, which includes probabilistic models for projecting the reliable, safe and effective aviation training, taking into account the requirements imposed by rules, standards and regulations of civil and military aviation, were discussed. In general, its structure, internal modules and exemplary tables of the analysis and assessment of the aviation personnel updates and the validity of permissible breaks during flight by aviation personnel. A schematic diagram of introducing the input data, main parameters, statistical data and expected results in the form of the training schedule, the schedule of the aircraft necessary moving, indicators of the training analysis and assessment, safety and reliability, were mentioned. The mathematical notations of input data and examples of the offered training indicator of aviation personnel were presented. The criterion global function, which exposes the maximisation of the aviation personnel training, as well as the maximisation of the performed flying time of a given type of aircraft, and the minimisation of operating costs of the specific aviation training, was determined. The paper was completed with a conclusion that shows the advantages of the proposed complex management system of the aviation training process.
Źródło:: Journal of KONES; 2016, 23, 3; 233-240
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Research of the dynamic properties of structures the models of interpretation
Autorzy:: Wiśniowski, W.
Powiązania:: https://bibliotekanauki.pl/articles/243504.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
aviation
vibration
structure testing
resonance analysis
modal analysis
Opis:: Experimental research of the dynamic properties of structures is performed during of prototype perfectioning, current exploitation and even after the withdrawal from the exploitation for the estimation of the residual durabilities. The aim for research of the dynamic properties of structures is the assurance of its safety, reliability, economic management and comfort. Researcher records the amplitudes of vibrations in the function of the actuation frequencies. Local raise of the amplitude is qualified as resonance. From the researcher point of view, the shape of resonance curves justifies the discrimination of two types of phenomena's: „single resonance" and „close frequencies resonance". For better understanding of these occurrences „the models of interpretation" were proposed. Up to three models of interpretation were assigned to the single resonance: one-degree-of-freedom system, one-degree-of-freedom system with share of the backlashes, two one-degree-of-freedom systems with the same frequencies. From above reasoning, the conclusion results that researcher can expect that the preliminary isolated single resonance belongs to one from the three, mentioned above cases. The judgment of these occurrences, just as the disentanglement of relations in the resonance pair with close frequencies, determines next challenge for the researcher.
Źródło:: Journal of KONES; 2008, 15, 3; 561-565
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Aviation piston engines : flight parameter analysis
Autorzy:: Boguszewicz, P.
Glowacki, P.
Powiązania:: https://bibliotekanauki.pl/articles/245160.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation piston engine
on-condition maintenance
engine flight parameter
Opis:: A program and tools enabling general aviation operators in our country the exploitation of the piston engines oncondition has been developed in the Institute of Aviation. Apart from the existing and strictly supervised engine manuals tasks, the program introduces, among other things, new maintenance mandatory activities like engine parameter monitoring during cruise and climb and a way of assignation diagnostic tolerance limits for them. That has never been performed in the aviation piston engines maintenance practice. In order to improve such analysis a flight data recorder (FDR) EDM 900 has been installed on the DA20- C1 „Katana” aircraft equipped with IO-240-B engine, which will allow elimination of the pilot's read errors and examination of the changes in the parameters during the entire flight. This will enable estimating if at a certain time of the flight a specified engine parameter is not exceeding the permissible values. Parameters from cruise have to be recorded in the similar range of the engine rpm’s. The parameters are oil pressure, oil temperature, cylinder head temperature, EGT, fuel flow, outside air temperature, rpm and altitude. Lower and upper acceptable limit values should be set, in which they can be contained throughout engine life. Engineers should also observe the trend of their changes. This article shows results of the aviation piston engine parameters analysis taken from FDR for ground runs, take-offs and cruise flight phases.
Źródło:: Journal of KONES; 2016, 23, 3; 41-48
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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