Autor: (T.M.). - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Model of hydraulic single-acting driye for valves of internal combustion engine
Autorzy:: Smoczyński, M.
Szydłowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/246097.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road transport
simulation
internal combustion engines
hydraulic drive
camless valve drive
Opis:: This paper shows the conception and the model of hydraulic single-acting valve drive for internal combustion engines. This drive should give free control for valve lift, valve opening and valve closing time. It consists of parts: electric control valve and hydraulic actuator, whose piston is connected with engine valve and return spring. One of the basic components of high pressure HEUI injector for the Diesel engine - electric valve with solenoid was chosen as electric control valve. Principle of operation, physical and mathematical model of this drive is to be presented in this paper. Presented model consists of electrical, mechanical and hydraulic subsystems: slide of control valve with solenoid coil, power piston of hydraulic actuator with return spring and hydraulic components. Describe the dynamic behaviour of the solenoid was based on non-linear magnetic circuit model. Movement of valve slide and power piston of actuator was based on the motion equation. Description of hydraulic subsystems was based of one-dimensional, compressible flow model. After full system identification basic parameters of this drive (like supply oil pressure or valve lift) will be calculated and analyzed for better load exchange in internal combustion engines.
Źródło:: Journal of KONES; 2009, 16, 1; 465-472
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: The influence of technological parameters process burnishing on the reduce roughness steel shaft
Autorzy:: Dyl, T.
Nikonowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/246902.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing
reduce roughness
smoothness processing
Opis:: The processing is burnishing one from the methods of processing finishing off the metals, depending on utilization the local plastic deformation, produced in top layer of object as a result of definite, meeting co-operation hard the and smooth tool from worked surface. The plastic deformations are called out by arrangement of strengths causing the superficial crossing the value of tension pressures of the making plastic material worked. Set them on cold causing except moving the unevenness also the cold work in top layer of worked object. The effect of moving ("flowing") the unevenness of surface, as a result of influence on worked surface smooth the and hard tool, it is the decrease of roughness of surface worked, however the effect the cold work - the principal change of property of top layer object. Phenomena these, though they step out the most often simultaneously, can have different intensity, according from demanded main effect of processing. It can be with main aim of applying processing the burnishing in technology of machines: the smoothness processing - the definite decrease the height not the equality of surface after previous processing burnishing; the strengthening processing - the producing of definite changes of physical properties of material in top layer of object, causing immunizing him on working such exploational factors how fatigue, abrasive waste, corrosion and different; the processing the dimensional - smoothness - the definite enlargement the dimension exactitude from simultaneous decrease to required value the roughness of surface. The determination of influence of technological parameters process burnishing on quality of surface of rolls from stainless and unalloyed steel is the aim of work.
Źródło:: Journal of KONES; 2010, 17, 2; 97-102
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Simulation research of the hydraulic drive for valves of internal combustion engine
Autorzy:: Szydłowski, T.
Smoczyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/950113.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: camless engine
hydraulic actuator
internal combustion engine
servovalve
Opis:: This paper describes simulation research of single-acting hydraulic drive for valves of internal combustion engines. The proposed drive was composed of commercial servovalve and typical hydraulic single-acting actuator. Research was performed for the prepared and verified model of this drive. In the paper mainly analysed was the impact of control signals on course of valve lift and its characteristic parameters like: delay of start of valve movement in opposition to the start of the control signal, the time of opening and closing of the valve, the valve lifting time, the course of valve lift, fill factor of the area under the valve lift curve and velocity of the valve subsidence. Special attention was given to the closing movement of the valve. Drive control was limited to step control signal. In the final phase of closing the valve, the control method had to slow down and stop the valve, but without a significant influence on the valve closing phase. During research the fill factor of the area under the valve lift curve was calculated and compared with values obtained for the classic drive with cam. A number of simulations allowed to determine the optimal control signal for the course with deceleration of the valve. Based on simulation studies it was found that comparable fill factors of the area under the valve lift curve for cam drive and analyzed electrohydraulic drive were obtained up to over 4000 rpm speed. Above this speed the factor was significantly smaller for hydraulic drive. For low engine speeds the values of factor were acceptable and amounted to about 0.7. Unfortunately for the valve opening times for engine speed 6000 rpm, tested drive did not provide the full opening of the valve and the fill factor of the area under the valve lift curve was unsatisfactory. In this research, the frequency characteristics of the servovalve published by their manufacturers were used. It demonstrated that because of the delay and response speed of the valve is necessary to use units generating a control signal ahead in relation to the desired moment of opening the valve.
Źródło:: Journal of KONES; 2013, 20, 2; 385-391
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Modelling the structural dynamics of chosen components of the horizontal axis wind turbine
Autorzy:: Pawlak, M.
Jureczko, M.
Czapla, T.
Powiązania:: https://bibliotekanauki.pl/articles/242224.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: HAWT
hub
Planet Carrier
Blade Element Momentum theory
Opis:: As the horizontal axis wind turbines are getting larger, their dynamic behaviour is becoming more important. Dynamic analysis gives knowledge how to improve efficiency and safety also in small wind turbines. This article describes numerical models of chosen components of upwind, three-bladed wind turbine. Geometry of each component is generated separately and then assembled together by transformation matrices. Material of the blades is composite, the hub is assumed to be made of steel and material of the planet carrier is casted iron. These mentioned components are modelled by shell elements. The numerical model of the hub takes into account aerodynamic and gravity loads of blades, inertia forces due to rotation of the rotor and aerodynamic damping. The aerodynamic loads, calculated according to the modified Blade Element Momentum theory, are attached to aerodynamic centres. Wind conditions were assumed for I-class wind turbine according to Germanischer Lloyd. Stress Reserve Factors were calculated for DLC 6.1 load case according to Germanischer Lloyd, too. As a first step, numerical strength analysis with using AnSYS software was performed with maximum values of principal stresses as an output. Then, based on FEM analysis results, Stress Reserve Factors were calculated. SRF values show that analyzed hub and planet carrier have sufficient strength for extreme loads. Methodology of safety margin evaluation presented in this paper allows assessing if the object fulfils relevant standards demanding.
Źródło:: Journal of KONES; 2011, 18, 2; 349-354
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Measuring driver behaviour - indicators for traffic safety
Autorzy:: Niezgoda, M.
Kamiński, T.
Kruszewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242966.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: traffic safety indicators
driver behaviour
accidents
Opis:: Over one million people die each year on the roads and about 20-50 million are injured. Traffic safety is a global problem that needs interdisciplinary scientific approach to develop methodology for safety studies that will lead to valid conclusions and in the end to suitable preventive measures. It is difficult to define what a safe and unsafe behaviour is. Transportation research tries to find relation between significant variables and traffic safety in the triangle of interaction between human, vehicle and environment. Raw accidents data excludes ex-ante evaluations and is insufficient due to the rare frequency and difficulty with investigating causes. There is still lack of consensus between researchers on usage of the traffic safety indicators and their cut-off values. Article presents different methods for measuring driver behaviour and objective behavioural indicators that are commonly used as traffic safety measures e.g. time to collision, post-encroachment-time, deceleration rate, time headway, red-light violations, lane deviations, gap acceptance and others. The aim of the paper is to provide general framework for exploring valid and reliable variables in the traffic safety studies.
Źródło:: Journal of KONES; 2012, 19, 4; 503-511
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Effective methods for drivers research with use of a driving simulator
Autorzy:: Niezgoda, M.
Kamiński, T.
Ucińska, M.
Kruszewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/246065.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
driver behaviour
driving simulator
Opis:: Paper describes possibilities to use advanced vehicles simulator combined with additional supporting research devices for measuring drivers' behaviour. Analyzing drivers' behaviour with driving simulators is a rapidly growing field of research, which also demands the interdisciplinary approach from different science disciplines like psychology and simulation engineering. Paper presents modern research methods in transport safety researches and devices that are used to understand better driver's behaviour inside the driving simulator, e.g. Vienna Test System and mobile eye-tracker. Paper also explains a problem of simulator sickness that frequently occurs during the studies inside the driving simulators. Main advantage of using simulators is possibility to achieve full standardization of research conditions. Visualization system based on set of four projectors and cylindrical screen with 200 degrees of vision range, which allows to completely cover the range of sight of the driver to enhance driving reality. The view in the car mirrors is presented on three LCD screens which sizes are very close to the mirrors used in real car mirrors. The scenery generated by computer simulation is moving according to the car speed in the simulation. Similarly to the passenger car simulator, simulator of truck and bus is build based on visualization system which is composed of cylindrical screen, with two hundred degrees of horizontal range of view. Simulator gives the ability to trace functioning of few different types of vehicles.
Źródło:: Journal of KONES; 2011, 18, 3; 309-316
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Experimental research of properties of hydraulic drive for valves of internal combustion engines
Autorzy:: Szydłowski, T.
Smoczyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/245475.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: camless engine
hydraulic actuator
internal combustion engine
servovalve
Opis:: This paper describes a research stand and results of experimental research of single-acting hydraulic drive for valves of internal combustion engines. The research stand of the hydraulic valve drive was consisted of: typical valve drive for high-speed internal combustion engine, commercial hydraulic actuator, commercial hydraulic accumulator and electrically controlled hydraulic distributor, which controlled the flow of oil supply to the hydraulic actuator. Rexroth commercial servovalve was used as hydraulic distributor for this valve drive. Components of hydraulic valve drive were mounted to specially designed research sleeve. On this sleeve complete drive, which consisted of a hydraulic cylinder and servovalve, was mounted. Drive control was performed in an open loop with a use of rectangular control signal. Displacement of the valve was measured by an optical displacement sensor. Tests were performed for constant lift of the valve, supply pressure set in the range of 6 to 10 MPa and at fixed temperature of the working medium and different initial deflections of valve spring. The behaviour of the drive was researched for bipolar and a rectangular control signals. Such range of measurements was to determine inter alia: the impact of the supply pressure and the control signals values on the drive work. Obtained results were used to verify the simulation model in a wide range of variation of the characteristic parameters of the electro-hydraulic actuator. The results of experimental measurements like valve movement and pressures in the drive were shown and analysed in this paper. With a reference to the valve movement, a detailed calculations of the valve kinematics were performed. Special attention was given to the opening and closing velocities of the valve, depending on the servo control signal. Subsidence valve velocity during its return movement was calculated. This subsidence valve velocity is an important parameter in terms of the applicability of this drive for the internal combustion engines. Valve opening time delay in opposition to the current control signal was also specified and discussed. Obtained results allowed to conclude that the proposed drive provides acceptable kinematic parameters for high-speed engines at supply pressures of at least 8 to 10 MPa. During the measurements acceptable valve subsidence speeds were obtained. It was found that there is a possibility of adjustment of this parameter by setting the slider servovalve negative overlap. Results became the basis of development of the model of this type of the drive. Further simulation studies will allow to evaluate the applicability of such valve drive for internal combustion engines. Further simulation studies allow to compare the proposed solution with known literature hydraulic valve drives.
Źródło:: Journal of KONES; 2013, 20, 1; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Model of hydraulic double-acting drive for valves of internal combustion engine
Autorzy:: Szydłowski, T.
Smoczyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/246081.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engine
servovalve
hydraulic actuator
camless engine
Opis:: The article presents the idea and the model of electrohydraulic double-acting valve drive for internal combustion engine. In this solution to control the position of the engine valve used Rexroth's servovalve and the double-acting actuator. This drive should give free control of valve lift, valve open andvalve close time. In the article the principles of the operation and the mathematical model of the drive are described. Submitted model gives bases to the initial value definition of the main parameters of the hydraulic drive. It lets execute the analysis of the features of such drive and point necessary modifications for the correct realization of the process of the gas exchange in internal combustion engine. The first results from the simulation showed that proposed solution allows obtaining desirable run of lift of valve in the wide range of engine speed. Comparisons of valve lift proceedings driven hydraulically and mechanically by the use of harmonic cam, for two engine speeds, obtained from simulations are presented in the article. These comparisons show that at greatest engine speeds it is indispensable the use of pressures of the working liquid exceeding 10 MPa to obtain nearing results to the classical mechanical timing gear. Preliminary simulation test results indicate that it may ensure desired run of lift of valve in the wide range of engine speed
Źródło:: Journal of KONES; 2009, 16, 1; 487-494
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: The WOLA marine high-speed diesel engines diagnostics using vibro-acoustic methods
Autorzy:: Kluczyk, M.
Lus, T.
Powiązania:: https://bibliotekanauki.pl/articles/241671.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
maritime transport
combustion engines
vibroacoustic diagnostics
Opis:: In the paper, some results achieved during the tests of high-speed marine diesel engine WOLA 57H6Aa type are presented. This type of engine is still broadly use on Polish Navy vessels and on some civilian ships built in Polish shipyards, mostly as auxiliary or emergency generator. Several types of engine malfunction had been simulated especially in fuel injection system and in valve gear mechanism. The malfunctions were connected with fuel valve opening pressure, intake and exhaust valves clearances. During the tests engine speed and load had been changed in tolerant operation range. The tests were devoted to prepare some new diagnostic methods, which could be used on these types of marine diesel engines. Diagnostic methods, which based on vibration and acoustic signals analysis are usually sensitive on engine load and speed changes. During the tests, different methods based on vibration and acoustic signals processing in frequency domain were used. Set of applications possible to use by B&K PULSE system together with acoustic and vibration sensors were applied to analyse of signals changing by different types of simulated malfunctions. Aim of the research was to check if the acoustic and vibration signals generated by the engine systems and components analysed by B&K PULSE system with CPB measurement give possibility to find such parameters, which are unequivocal, strongly connected with different object structure parameters, easy to asses and measure.
Źródło:: Journal of KONES; 2014, 21, 4; 225-231
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Influence of a surface friction on the deformation process of ring made of nonlinear properties material
Autorzy:: Wegner, T.
Kokot, M.
Powiązania:: https://bibliotekanauki.pl/articles/243889.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hyperelastic material
surface friction
energy methods
energy-based finite element
Opis:: The paper presents application of an energy-based finite element and a local relaxation method to computer calculation of deformation of a ring made of hyperelastic material. The present study considers a surface friction mechanism. This mechanism is a physical phenomenon counteracting the relative motion of the contacting bodies. Friction causes loss of energy the dissipation of which is a result of wearing out of the bodies' surfaces and heat emission. This directly affects the shape of the deformed body. The above statements are confirmed by the results of computer calculation performed for rubber ring with rectangular cross-section. Rubber is a nearly incompressible material and, therefore, requires application of special mechanical models of the material properties as well as proper calculation methods. Implementation of energy-based finite element and local relaxation method enables studying the ring deformation with consideration of nonlinear properties of rubber and its displacements in the platering contact plane, according to the value of a friction coefficient between rubber and the plate material. Application of energy method resulted in determination of the work of friction forces and the energy density distribution of volumetric and deviatoric strain. It also simplified energy analysis of the surface friction mechanism and influence of the friction coefficient value on the process of the ring deformation.
Źródło:: Journal of KONES; 2010, 17, 1; 465-478
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: The identification of damping and stiffness parameters of a driver model on the basis of crash tests
Autorzy:: Jaśkiewicz, M.
Stańczyk, T.
Powiązania:: https://bibliotekanauki.pl/articles/244137.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: passive safety
crashes
parameter identification
protection
head injuries
Opis:: The following paper presents the identification of damping and stiffness parameters o f a man model on the basis of crash tests conducted in PIMot. The frame analysis of the film with a registered crash test was conducted. On the basis of this analysis there were prepared the characteristics of horizontal and vertical displacements in time function and a movement trajectory for each part of the dummy. Theses characteristics were used in an identification procedure. The values of identified parameters were stipulated in the work. The correctness of obtained results has been illustrated by the comparison of results of tests and a computer simulation conducted with the use o f a dynamic man model and identified parameters values. Obtained results were used to conduct simulations which show the influence of an age weakened muscle structure of a man (manifested with the decrease of the values of damping and stiffness parameters) onto the man movement during a crash. Additionally it has been illustrated the conformity of obtained test results through the presentation of frames of the film from the test with a model outline from computer simulation. Conducted simulations demonstrate that more serious injuries during car crashes with elderly people may be caused not only by a age decreasing man body strength.
Źródło:: Journal of KONES; 2009, 16, 1; 229-238
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Expedient repair of hydro-pneumatic pipes with adhesives
Autorzy:: Smal, T.
Rośkowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/244447.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: military logistics
maintenance
expedient repairs
strength of pipes
composite adhesives
Opis:: The paper presents research on expedient repairs, including battle damage repair methods of hydro-pneumatic pipes with adhesives. According to analyzed publications concerning battle damage of military equipment, various pipes and lines, which are used in military vehicles and aircrafts, are one of the most often damaged parts during combat operations. During experimental tests, the efficiency of damaged pipes repair was researched. Various methods of repair depending on pressure in the pipe and sort of damage were considerate. To conduct experimental tests of repair two kind of adhesive were used. It was composite adhesive Belzona 1111, which is used by many armies of NATO, and epoxy adhesive Epidian 57 hardened with Z-1. The conducted experiments proofed that both low pressure and even high pressure hydro-pneumatic pipes can be repaired in the field conditions with considered adhesives. Presented methods of repairs can be very useful especially during combat operations when the access to spare parts and disposal time is limited. Using to repair the manufacturer’s composite adhesive without any strengthening should be limited to low pressure pipes. The specific properties of epoxy adhesives must be considered before applying to repair, especially change of mechanical and utilitarian features at higher temperature.
Źródło:: Journal of KONES; 2011, 18, 1; 573-578
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: The effect of exhaust gas recirculation on the process of combustion in the self-ignition engine
Autorzy:: Ambrozik, T.
Kosno, M.
Powiązania:: https://bibliotekanauki.pl/articles/950109.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exhaust gas recirculation (EGR)
diesel engine
start of combustion
nitrogen of oxides
Opis:: The paper compares the basic parameters of the process of combustion in the Fiat MultUet 1.3 SDE 90 KM with and without an exhaust gas recirculation system, running according to load characteristics with the following engine crankshaft rotational speeds: n=l200 ipm, 1750 rpm and 3000 rpm. During testing, the engine was supplied with commercial diesel oil. The tested engine was provided with external exhaust gas recirculation consisting in supplying a specific amount of exhaust gas back to the cylinder via an EGR electric solenoid valve. The exhaust gas delivered to the cylinder was cooled. Exhaust gas is composed of inert gases that do not take part in the combustion process. This causes, above all, a lower rate of pressure increase in the cylinder and a lower heat release rate. Thanks to exhaust gas recirculation, lower maximal temperatures prevail in the cylinder, and the engine's operation is "softer." During experimental testing, the variation of cylinder pressure and chamber pressure, the injector operation control current magnitude, effective power, torque and the hourly fuel consumption, as well as the exhaust gas recirculation rate. Actual indicator diagrams plotted were used for determining the heat release characteristics, based on which the percentage fractions of the burned out fuel charge injected during one engine running cycle namely 5, 10, 50 and 90% fractions were determined. In addition, the indicator indices were determined. The paper has demonstrated the effect of exhaust gas recirculation on the processes occurring inside the cylinder in the self ignition internal combustion engine.
Źródło:: Journal of KONES; 2014, 21, 2; 7-14
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Preliminary research of microgasturbine injection ring
Autorzy:: Czarnecki, M.
Orkisz, M.
Wołoszyn, T.
Powiązania:: https://bibliotekanauki.pl/articles/247528.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gasturbine
rc gasturbine
propulsion
fuel supply
Opis:: Fuel supply systems used in microgasturbines are designed in experimental way. In literature they exist as geometrically prescribed that is proper in general. In commercial aeroengines injection system is the most vulnerable part which failure generates high thermal loads and causes overheating of whole "hot section " or part of it. Microgasturbines are subjected to overheating due to relative short combustion section and uneven fuel distribution in injection points. Presented article contains preliminary research of fuel injector ring designed for microgasturbine turbojet. Tested fuel collector is supplied from the single source and feeds five vaporizers. Investigations are focused on mass flow measurement from each supply point. Research methodology is similar to supervisory tests carried out on commercial aeroengines. Injector was tested with two types of microfuelpumps: JetCAT A60I405 and FlightWorks 200C. As a working liquid the JET A l kerosene was used For each probe constant volume of liquid was pumped through the system. Pumps were tested infull operational range of voltage. Electric power characteristics were obtained for fuel pump and whole fuel system. The strong influence of throttling on stability of microfuelpumps was affirmed. As a conclusion there is a modernization proposal that aims on quality and quantity of fuel distribution.
Źródło:: Journal of KONES; 2010, 17, 4; 117-122
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Concept of swimming flat - bottomed evacuation platform
Autorzy:: Kamiński, T.
Niezgoda, M.
Kruszewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242796.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
rescue
evacuation boat
Opis:: This article presents the concept of rescue airboat with the elements of a laboratory stand. The boat consist of a hull made of composites, reinforced by replaceable, 30 mm thick, polyethylene boards. The boards will protect the boat hull and will provide low value of friction parameter and protection against effects of fire exposure and dangerous liquids. The final optimal shape of the boat’s hull will be achieved by numerical simulations. The boat will be equipped with electronic steering, communication and lighting systems as well as sophisticated navigation system (GPS and a module for checking depth of the water). Due to special catches on board, it will be possible to install folding seats for passengers as well as platforms for transportation of goods. Our evacuation boat should present higher parameters of safety and more functionalities than standard evacuation boats providing possibility to move even over short segments of roads and terrain out of the water. The propulsion system will be mounted above the board and will consist of pushing engine with power of 600 KM and three blades propeller. The airflow will be directed properly by two or three moveable surfaces. The research element of the project will be constructing special equipment to measure linear and angular speed and acceleration parameters, as well as position of boat and depth of water below.
Źródło:: Journal of KONES; 2013, 20, 3; 215-219
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "(T.M.)." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język