Temat: engine maintenance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Researches of the dynamic characteristics of the turbine jet engine in flight based on its ground tests
Autorzy:: Golak, K.
Lindstedt, P.
Grądzki, R.
Powiązania:: https://bibliotekanauki.pl/articles/247300.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: jet engine
adjustment
ground tests
engine condition
aircraft engine maintenance
Opis:: Turbine jet engines maintenance (adjustment) actions are performed during standard ground tests, but they are used during the flight. It turns out that the characteristics of the engine determined during the ground tests from the input value "w" introduced by the engine control lever DSS are significantly different from those obtained from disturbance “z" operating in the engine during the aircraft flight. It is noticed, that improvement of the engine control state made by mechanic during aircraft ground tests may cause the deterioration of the engine performance, which is felt by the pilot. The article presents a method that allows determining the basic characteristics of the engine in flight based only on the signals measured during testing ground. This method is based on measurement the major engine signals n – engine rpm, p4 – turbine discharge total pressure, p2 – low pressure compressor inlet, mp – fuel usage, then the designation of synthetic signals y=n/p4 (which describes the engine output), u=mp/p2 (describes engine input) and further their own and cross correlation function. Next, the power spectral density functions of these synthetic signals were calculated. Power spectral density functions is a basis to determine the spectral transfer function HW(jω) (during the ground tests) and HZ(jω) (in flight) which are the basis to determine the characteristics (step response) of the turbine jet engine in flight and during ground tests.
Źródło:: Journal of KONES; 2016, 23, 3; 151-156
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:: New diagnostic methods of alternative LPG/CNG injection systems
Autorzy:: Flekiewicz, B.
Flekiewicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/242343.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CNG
LPG
SI engine
maintenance
fuel injection
Opis:: Diagnostic methods of gas alternative feeding systems were presented in this paper. Methods of validation for properly cooperation between OEM petrol systems and gas injection system were described. Procedures allowing the analysis ofproper operation of both petrol and alternative feeding systems were presented. A detailed study has been done on seąuential injection system, as a solution fulfilling restricted requirements of new SI engines. Obtaining both satisfactory emission reduction level and minimal power drop for alternative engine gas operating is only possible with all diagnostic procedures especially ones connected with system prototyping phase being done with high precision equipment characterized by low inertia of transducers. Sensors output signals reąuire acquisition with the use of more complex and faster systems. Proper choice of test equipment at each step, guarantees repeatability and what results also reliability ofrealized diagnostic procedures. Influence of alternative gas fuelling systems on mixture adaptation, transfer function, diagnostic methods for prototyping phase, diagnostic procedures for alternatively powered vehicle operation, diagnosis of sequential gas injection system during normal system maintenance are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 2; 109-116
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Influence of the selected exploitation tasks on airline operating cost and flight safety taking as an example turbofan engine
Autorzy:: Glowacki, P.
Powiązania:: https://bibliotekanauki.pl/articles/242859.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft engine
maintenance
exploitation cost
flight safety
Opis:: The total cost of the aircraft maintenance was in 2012 about $ 80 billion, including maintenance, repair and overhaul, ie. MRO market (Maintenance, Repairs and Overhaul), the operators of these aircraft have spent about $ 60.7 billion – of which 40% were direct maintenance costs of the engines. It can be concluded that main influencer on airline direct maintenance costs are spending for power plants. The article shows that the appropriate exploitation of the engine, leading not only to the total operating costs (mainly the cost of fuel and maintenance) reduction. Also through continuously engine health monitoring, resulting in a higher reliability, and thereby increases the safety of flying and – what is now especially important – by decreasing fuel consumption reduces greenhouse gas and exhaust toxic components emissions. The modern aircraft engine and its basic performances were described. Based on data, analysis from approximately twenty thousand flights of the specific operator and self-experience, the benefits from the use of specific maintenance and operational tasks are presented. Results of the calculations were demonstrated which proved that engine life extension between overhaul (TBO) has impact on the operator’s maintenance reserves reduction, positive cash flow and fuel cost savings. The article confirms that it need not be contradiction between aircraft operator economic effect, and the improvement of safety of flying.
Źródło:: Journal of KONES; 2016, 23, 2; 129-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Electric fuel injection engine reliability problems in developing countries, cape verde case study
Autorzy:: Monteiro Tavares, C. M.
Szpytko, J.
Powiązania:: https://bibliotekanauki.pl/articles/247049.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: electric fuel injection engine
maintenance
reliability
developing countries
Opis:: Due to the need to reduce greenhouse gas emission rate, nowadays vehicles are manufactured in different types of fuel injection, one example is the engines with electronic injection and management. This vehicles present several advantages for the environment and it reduces the amount of fuel used in the vehicle, becoming more economic, what is also important due to the prediction for decrease of the available quantity of fossil fuel. The mechanical injection vehicles are no longer manufactured what make the electronic fuel injection engines to begin to be introduced in Cape Verde. The biggest problem in Cape Verde, when it comes to maintenance of vehicles, is the fact that the majority of mechanics working in vehicles maintenance, learned with the practice, very few of them had the opportunity to study. These new vehicles require staff with a certain level of knowledge. Mechanics and workers generally have an elementary school education; or have never finished high school. Many of them began working as apprentices and were trained on the job by more experienced staff. As a result, most of their skills were acquired on the job in practical “hands-on” contexts without any theoretical training. This paper aim to study the state of the art related to maintenance problems and strategies in electronic fuel injection engines, as well as the study of problems faced in Cape Verde with the maintenances. This paper will propose a solution for a reliable maintenance, for these devices in countries with lack of technical support focusing in the study of case in Prai city, Cape Verde.
Źródło:: Journal of KONES; 2016, 23, 4; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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