Temat: aviation engine - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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: 2.

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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Skocz do pozycji: 3.

Tytuł:: Method of preliminary evaluation of biocomponents influence on the process of biofuels combustion in aviation turbine engines
Autorzy:: Kaźmierczak, U.
Kulczycki, A.
Powiązania:: https://bibliotekanauki.pl/articles/247673.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel
aviation turbine engines
biofuel
synthetic hydrocarbons
engine test
Opis:: The aim of this article is presentation of the new method of preliminary evaluation of biocomponents influence on the process of biofuels combustion in aviation turbine engines. This method is based on the tests of evaluated biofuels on engine stand MiniJetRig equipped with small turbine engine. The idea of this new method is to compare the combustion process of evaluated biofuel with the combustion of reference fuels. The reference fuel used in presented research was mineral Jet A1. Two compositions of pure hydrocarbons were blended with Jet A1 fuel and tested using MiniJetRig. The main criterion of combustion process assessment was CO concentration in exhaust gases. As the final criterion of evaluated biofuel the ΔCO = [COWx – COJet] was adopted, where COWx – the concentration of CO in exhaust gases emitted during combustion of evaluated fuel and COJet – the concentration of CO in exhaust gases emitted during combustion of Jet A1 fuel. This method was preliminary verified using HEFA biofuel previously accepted for aviation application. The obtained results qualify this biofuel as similar to Jet A1 ones – the DCO was within limits –30 – +20. The presented method needs further research, using much more evaluated fuels, to confirm their usefulness for laboratory pre-selection of new biofuels.
Źródło:: Journal of KONES; 2017, 24, 4; 83-90
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Jet aircraft data acquisition systems
Autorzy:: Rojewski, A.
Bartoszewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/243996.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft
safety
jet engine
aviation
samolot
bezpieczeństwo
silnik odrzutowy
lotnictwo
Opis:: The article presents systems, which record parameters of flight in modern aircraft F-16, which was delivered to Polish Airforce in 2006. With the current level of technical development of the aviation industry, data acquisition systems are an important element of all aircrafts. These systems are responsible for the flight safety, allow reading and storing the most important flight parameters, and combined with digital control and safety systems allow to counteract dangerous situations, which especially can happen often in the case of military aircraft such as the F-16 due to their combat purpose. Systems records basics parameters of plane and engine, as specific fuel consumption or height of flight provides video and audio recording, and aerial combat assistance. These systems record even failures of a braking system during landing. Thanks to modern technology, and devices like those described in this article, F-16 is one of the best fighters in the world. The amount of data provided by analogue and digital sensors is so large that it requires the partitioning of parameters and use of several basic recorders of the entire system is the unit called DAU, or Data Acquisition Unit, which records the most important flight parameters, such as flight time, engine speed, or altitude.
Źródło:: Journal of KONES; 2018, 25, 1; 333-338
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Silnik lotniczy jako obiekt badań tribologicznych
Aero-engine as the object of tribological research
Autorzy:: Nidzgorska, Adrianna
Witoś, Mirosław
Perczyński, Jerzy
Kułaszka, Artur
Powiązania:: https://bibliotekanauki.pl/articles/38933889.pdf
Data publikacji:: 2023
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: lotnictwo
tarcie
diagnostyka
badanie tribologiczne
silnik lotniczy
instalacja olejowa
aviation
friction
diagnostics
tribological testing
aero-engine
oil system
Opis:: Podczas pracy silników lotniczych (turbinowych i tłokowych) występują procesy zużycia w węzłach tribologicznych, które w znaczny sposób wpływają na niezawodność i bezpieczeństwo eksploatacji statków powietrznych. W artykule przedstawiono aspekty diagnostyki tribologicznej silników lotniczych bazującej na okresowych badaniach próbek środka smarnego w laboratoriach. Na początku przedstawiono obiekt badań z uwzględnieniem cech konstrukcyjnych, parametrów pracy i stosowanych środków smarnych oraz podstawy teoretyczne badań tribologicznych. Następnie opisano metody badań stosowane w diagnostyce tribologicznej silników lotniczych, uwzględniając procesy starzenia i zanieczyszczenia środków smarnych, normy, metodyki badawcze i doświadczenia eksploatacyjne opisane w literaturze, w tym krzywą podatności eksploatacyjnej. Możliwości metod badawczych zobrazowano wynikami z okresowych badań tribologicznych silników turbinowych, uzyskanymi w akredytowanym laboratorium diagnostyki systemów tribologicznych. W dalszej części wskazano rolę analizy trendu i kryteriów statystycznych w procesie diagnozowania i zarządzania ryzykiem eksploatacji silników lotniczych, eksploatowanych zarówno według stanu technicznego, jak i planowanych obsług technicznych (resursów). Zasygnalizowano możliwość poprawy wiarygodności diagnostyki tribologicznej silników lotniczych na bazie doświadczeń z przemysłu – monitorowania wybranych parametrów tribologicznych w czasie rzeczywistym. W podsumowaniu wskazano na wysoką efektywność i rolę diagnostyki tribologicznej w utrzymaniu bezpieczeństwa eksploatacji floty różnych typów statków powietrznych.
During the operation of aero-engines (turbine and piston engines), wear processes occur in tribological nodes, which significantly affect the reliability and safety of flight operations. This paper presents aspects of tribological diagnostics of aircraft engines based on periodic testing of lubricant samples in laboratories. Firstly, the object of research with its design features, operating parameters and used lubricants is presented, as well as the theoretical basis of tribological testing. This was followed by a description of the testing methods used in tribological diagnostics of aero-engines, taking into account lubricant degradation and contamination processes, standards, testing methodologies and operating experience described in the literature, including the machine failure curve. Next, the capabilities of the testing methods are illustrated with results from periodic tribological testing of turbine engines, obtained at an accredited tribological systems diagnostics laboratory. In the following section, the role of trend analysis and statistical criteria in the process of diagnosing and managing the risk of operation of aero-engines, exploited according to both their technical condition and planned maintenance, was indicated. Then, the possibility of improving the reliability of tribological diagnostics of aero-engines on the basis of experience from industry - real-time monitoring of selected tribological parameters - was signalled. In conclusion, the high efficiency and role of tribological diagnostics in maintaining the operational safety of a fleet of different aircraft types is indicated.
Źródło:: Journal of KONBiN; 2023, 53, 3; 87-128
1895-8281
2083-4608
Pojawia się w:: Journal of KONBiN
Dostawca treści:: Biblioteka Nauki

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