Fatigue Test Optimization for the Aircraft Engine Based on the Life Cycle Information Support and Modeling

Author(s):  
N. Kondratyeva ◽  
S. Valeev
Mechanik ◽  
2018 ◽  
Vol 91 (3) ◽  
pp. 230-232
Author(s):  
Leszek Bielenda ◽  
Wojciech Obrocki ◽  
Maciej Masłyk ◽  
Jan Sieniawski

Results of comparison research of various sensors types used in the fatigue tests for aircraft engine compressor blade vibration amplitude measurement were analysed. Sensors under tests: inductive, capacitive, eddy-current, laser and vibration. Presented were sensors characteristics and their faults. Additional test stand instrumentation was designed and performed, including mounting bracket.


Author(s):  
L.V. Chyzhevska

Management reporting is an important element of both corporate governance and internal processes that are carried out in the enterprise’s controlling system. The primary purpose of management reporting is to provide information support for management decisions, which includes financial planning, financial reporting, financial analysis, management accounting, budgeting, controlling, and management reporting. Obstacles to the implementation of an effective financial reporting management system are the lack of formalized rules for the formation, submission, preparation, correction, and control of management reports. In order to overcome this shortcoming, the article introduces the term «life cycle of a management report», which is understood as a period of time that includes the development, implementation, and use of a management report until it meets user information requests. At the same time, the following stages of the management report life cycle are proposed: identifying a request from the user; identifying responsible persons and the working group participants for developing the report form; identifying reporting objects that correspond to the user’s request; defining accounting and analytical sources of information; finding out the degree of aggregation of indicators; automating data submission for updating reports; visualizing the reporting form, testing the form; identifying necessary corrections; formulating recommendations for decision-making guidance; identifying new requests. This approach will help to solve the key problem of information support for the management decision-making process, namely, the lack of coordination between user information requests and the availability of information sources to ensure them.


2021 ◽  
Vol 51 (3) ◽  
pp. 65-73
Author(s):  
Serhii Pashchenko ◽  
Artem Shulhin ◽  
Volodimyr Samuleev ◽  
Оleksandr Lobunko ◽  
Оleg Dobridenko

Abstract The operational technique for the major components of the fighter aircraft engine rotors has been introduced basing on the real conditions of their cyclic loading in each flight or ground test and a priori information on their previous operation. It has been confirmed that the obtained technical solutions not only conform to the current methods of accounting for the depletion of the life cycle of the Afterburning Turbofan Engine (ATE) but also introduce additional opportunities to consider individual characteristics and conditions of their cyclic loading throughout the overall operating time. A method for estimating the depletion of the life cycle in accordance with the Total Accumulated Cycle (TAC) has been proposed. It allows us to compare the actual operating time of the ATE in hours and the accumulated value of cyclic damage to the engine and its major components (within the TAC parameter) during the previous operation.


Author(s):  
V. F. Kornushko ◽  
A. V. Panov ◽  
I. V. Bogunova ◽  
O. M. Nikolayeva ◽  
A. A. Flid

The article considers the application of the system approach for constructing informational support for the life cycle of the production of medicinal products. The principal difficulties of creating a single informational system of the entire life cycle are considered in this article. A brief analysis of the information and computer support of individual links in the life cycle is given. Particular attention is paid to the use of a systematic approach to the creation of information support for the pharmaceutical development of medicines. The principle of QbD - “Quality planned for development” - was taken as a basis. For the implementation the QbD principle on the basis of the system approach, it is proposed to use the Shewhart-Deming iteration cycle to create an information support for a sustainable search for the optimal version (the program) of the conducted studies. The possibility of combining the PDCA cycle and the methodology of the system approach is shown. On its basis, system-theoretic multiple models of nformation support for pharmaceutical development in the graphic-analytical nomination were constructed. The method of applying the criterial approach for the formation of global and local criteria for managing research and the construction of system management models in the Melentiev’s brackets nomination are presented. The information modeling of the stage of pharmaceutical development has been carried out. Functional models have been constructed in the IDEF0 nomination.


Author(s):  
E. J. Reed ◽  
R. R. Horton ◽  
J. B. Fyfe

A major portion of the Life Cycle Cost (LCC) of a modern high technology weapon system is determined by design decisions made very early in the development process. Many of these decisions are so fundamental that later changes become impractical. As a result, a usage-sensitive, interactive aircraft engine LCC model has been developed by Pratt & Whitney Aircraft to evaluate and prioritize potential technology candidates during conceptual/preliminary design. This paper discusses the development of the EAGLE (Engine/Airframe Generalized LCC Evaluator) model, its validation using results from the Advance Technology Engine Studies (ATES), and includes an example engine technology evaluation.


Author(s):  
Alexander Klevtsov ◽  
Vladislav Inyushev

Safety assessment of Instrumentation and Control systems (I&C systems) of NPP is performed during expert reviews of nuclear and radiation safety in the framework of the licensing process at all life cycle stages of I&C systems. Life cycle stages of NPP I&C systems, which are determined by current guides, rules, and standards of Ukraine, are considered in the chapter. A short overview of the main principles of safety regulation of nuclear facilities, licensing, and expert review of nuclear and radiation safety is presented. Specific safety assessments of NPP I&C systems at different life cycle stages are analyzed (in particular, a list of documents proving NPP I&C safety that should be submitted for expert review at each stage is given). Such assessment is a labor-intensive process that requires processing considerable amounts of a variety of information. Hence, it is reasonable to provide experts with information support for assessing the safety of NPP I&C systems. The chapter gives suggestions and examples of practical implementation of the automated system for support of expert activities and considers the knowledge base for I&C systems.


Author(s):  
Michael Schneider ◽  
Jens Dickhoff ◽  
Karsten Kusterer ◽  
Wilfried Visser

Abstract In the recent decades, civil aviation was growing 4.7% per annum. In order to reduce emissions promoting the global warming process, alternative propulsion systems are needed. Full-electric propulsion systems in aviation might have the potential for emission-free flights using renewable energy. However, several research efforts indicate electric propulsion only seems feasible for small aircraft. Especially due to the low energy density of batteries compared to fossil fuels. For this reason, hybrid propulsion systems came into focus, combining the benefits of all-electric and conventional propulsion system concepts. It is also considered as bridging technology, system test and basis for component development — and therewith paves the way towards CO2 free aviation. In the ‘HyFly’ project (supported by the German Luftfahrtforschungsprogramm LuFo V-3), the potential of a hybrid electric concept for a short/mid-range 19 PAX aircraft is assessed — not only on system but also on single component basis. In a recent study, the propulsion architecture and the operating mode of the gas turbine and the electric components have been defined [1]. In this paper, the advantages of the hybrid propulsion architecture and a qualitative assessment of component life are presented. Methods for life time prediction for the aircraft engine, the electric motor, the reluctance generator and the battery are discussed. The impact of turbine inlet temperature on life consumption is analyzed. The life cycle of the aircraft engine and the electric components including gradual component deterioration and consequent performance degradation is simulated by using an in-house gas turbine simulation tool (GTPsim). Therefore, various effects on electric propulsion system can be predicted for the entire drivetrain system in less than one hour.


10.12737/1761 ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 76-81 ◽  
Author(s):  
Стариков ◽  
Aleksandr Starikov ◽  
Брыкин ◽  
Aleksey Brykin

The advantages of using light CAD system in the production of furniture are investigated. They allow providing rapid product develop-ment, as well as carrying out all necessary engineering calculations. In addition, it is possible efficiently and as quickly as possible to prepare the product for production. The basic stages of informational support through the product life cycle with reference to automated systems are described. There are the advantages of the use of transparent information to support the product in the conditions of order manufacturing.


2006 ◽  
Vol 110 (1107) ◽  
pp. 265-288 ◽  
Author(s):  
S. Raghunathan ◽  
E. Benard ◽  
J. K. Watterson ◽  
R. K. Cooper ◽  
R. Curran ◽  
...  

AbstractCustomer requirements and vision in aerospace dictate that the next generation of civil transport aircraft should have a strong emphasis on increased safety, reduced environmental impact and reduced cost without sacrificing performance. In this context, the School of Mechanical and Aerospace Engineering at the Queen’s University of Belfast and Bombardier have, in recent years, been conducting research into some of the key aerodynamic technologies for the next generation of aircraft engine nacelles. Investigations have been performed into anti-icing technology, efficient thrust reversal, engine fire zone safety, life cycle cost and integration of the foregoing with other considerations in engine and aircraft design. A unique correlation for heat transfer in an anti-icing system has been developed. The effect of normal vibration on heat transfer in such systems has been found to be negligible. It has been shown that carefully designed natural blockage thrust reversers without a cascade can reduce aircraft weight with only a small sacrifice in the reversed thrust. A good understanding of the pressure relief doors and techniques to improve the performance of such doors have been developed. Trade off studies between aerodynamics, manufacturing and assembly of engine nacelles have shown the potential for a significant reduction in life cycle cost.


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