Intelligent Situational Control of Small Turbojet Engines

Abstract

Improvements in reliability, safety, and operational efficiency of aeroengines can be brought in a cost-effective way using advanced control concepts, thus requiring only software updates of their digital control systems. The article presents a comprehensive approach in modular control system design suitable for small gas turbine engines. The control system is based on the methodology of situational control; this means control of the engine under all operational situations including atypical ones, also integrating a diagnostic system, which is usually a separate module. The resulting concept has been evaluated in real-world laboratory conditions using a unique design of small turbojet engine iSTC-21v as well as a state-of-the-art small turbojet engine TJ-100. Our results show that such advanced control system can bring operational quality of an engine with old turbocompressor core iSTC-21v on par with state-of-the-art engines. Dedicated to the memory of Ladislav Madarász

Intelligent Thermal Imaging-Based Diagnostics of Turbojet Engines

“…In order to design an infrared imaging-based diagnostic system for use with turbojet engines and to construct a working knowledge base, a small iSTC-21v turbojet engine, developed in the Laboratory of Intelligent Control Systems of Aircraft Engines at the Faculty of Aeronautics, Technical University of Košice (Figure 9), was used [62]. This is a single-stream, single-shaft turbojet engine with a single-stage one-sided radial compressor, an annular combustion chamber, and a single-stage non-cooled gas turbine with a variable exhaust nozzle with full authority intelligent electronic digital control system developed from the TS-21 engine (Ljulka-Saturn, Rybinsk, Russia).…”

Virtual Design of Advanced Control Algorithms for Small Turbojet Engines

“…The function f represents the function of the adaptor and Ke, Te are the parameters of the internal model as defined in (1) and Figure 3. The resulting adaptive control system architecture therefore represents an adaptive control system with an internal model [28,29,30].…”

“…The table shows that the Naslin adaptive controller performs as the best followed by the neural network adaptive algorithm, nonadaptive and the last is the performance quadratic adaptive controller, although it has also achieved acceptable control quality. To prove the validity of the concept, the triple loop control architecture was employed in laboratory conditions using the iSTC-21v engine [1,35,39]. The simulations are compared to the real data obtained in an experiment as shown in Figure 11, where the Naslin adaptor has been employed in the triple loop control system architecture.…”

“…Digital control systems allow updating control algorithms as software packages, which can quickly and effortlessly improve fundamental operational characteristics of an engine. There are many approaches, which are today applied to fulfil this task [1,2,3,4]. Apart from the classical PID control systems, which are quite effective [5,6], more progressive approaches in control of turbojet engines can be taken [7,8].…”

Knowledge Alliance as Education Services: Updated Content of Integrated Flight Preparation and Training of Pilots

“…The selected theoretical frameworks of the Knowledge Alliance within the issues of Simulation and modelling of Security can be found within the work by Fuchs et al (2010) focused on the simulation of dangerous substance outflows into the environment a result of traffic accidents by dangerous substances transport; in the study by Dvorak et al (2010) on the enhancing of security on critical accident locations using telematics support; in the work by Balatka et al (2011) on the exposure of the environment and surface water todangerous liquids -the slop outflow model; in the study by Kelemen and Blišťanová (2014) on the applied knowledge in logistic modelling to handle the threat of floods with aviation logistic support; in the study by Kompis et al (2011) on the parallel computational models for composites reinforced by CNT-fibres for personal and vehicle protection materials; in the work by Vágner and Papová 2014) on the comparison of Radar Simulator for Air Traffic Control used also for the education of new Air Traffic Controllers; in the work by Pavolová and Tobisová (2013) on the model of supplier quality management in the transport company applied for air transport; in the study by Kuzma et al (2016) on the use of the CAX System as a tool for modeling construction elements in the aviation industry; or in the work by Fözö et al (2009) on the advanced anytime control algorithms and the modeling of turbojet engines etc. The selected theoretical frameworks of the Knowledge Alliance within the Applied Technical Sciences are within the work by on the call for more security in the technology revolution: in the work by Bučka and Kelemen (2009) on the analysis of the specific requirements related to the Slovak Air Force; in the book by Hovanec (2016) on the digital factory as a prerequisite for successful application in the area of ergonomics and the human factor; in the study by Andoga et al (2018)…”