Pevnev V.,National Aerospace University - Kharkiv Aviation Institute
CEUR Workshop Proceedings | Year: 2017
The analysis of existing methods of construction of prime numbers is carried out in the presented paper. New concepts related to pseudoprime numbers are introduced. Theorems are formulated and proved on the basis of which such numbers are constructed. Using pseudoprime numbers can significantly reduce the number of candidates viewed as primes. The proposed corollaries of the theorems allow to significantly increase the ranges of unambiguous determination of such candidates. The results of the conducted experiments are presented, their analysis is carried out. The most important result of applying pseudoprime numbers is the estimation of the number of numbers to be checked. For large numbers with a size of more than 200 decimal signs, they make up less than 8 percent of the numbers on a given interval, and as the size of the numbers increases, this percentage decreases. Based on experimental data, basic properties of pseudoprime numbers are formulated.
Radomskyi O.,National Aerospace University - Kharkiv Aviation Institute
Advances in Intelligent Systems and Computing | Year: 2018
The article describes control synthesis for mobile walking robot, which has an interval mathematical model. We proposed proof of concept for mobile walking robot, carrying load up to sixty percents of robot’s mass. Control system includes a computing unit, seven servos, a three-axis accelerometer and a moving camera operating in a visible optical range. Results of interval algorithms synthesis are shown for robot as an object of automatic control (OAC), with interval mathematical model. We defined the operational mode range of the system, its structure and interval parameters of mathematical model. It is shown that setting of interval values allows adequate modeling and description of processes in dynamic systems such as mobile walking robots. Main goal of this paper is to show possibility of classical Bode Diagram modification and application for the synthesis of interval control. © Springer International Publishing AG 2018.
Porunov O.,National Aerospace University - Kharkiv Aviation Institute
CEUR Workshop Proceedings | Year: 2017
Modern big web-services should be developed with scalability and high availability. Modern high-load projects must cope with the loss of a server, rack of servers, data center or several data centers. It is not acceptable when a big business stops because of server overload or loss of any of the network elements. Also, small businesses, which aim is to grow in the near future, have to design their architecture to be easily scalable. The most non-trivial task is to construct a data warehouse because it is the stateful service and lots of servers need to be managed to have a storage which is big enough to store all users' data. The paper describes methods which might be taken to scale OpenStack object storage. Particular attention will be drawn to the automation of the object storage scalability. The solutions of scaling OpenStack Swift are suggested.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: SPA-2007-2.2-02 | Award Amount: 4.87M | Year: 2008
The objective of the research program is to design, optimize and develop a space plasma thruster based on helicon-radio-frequency technology and its application to a nano-satellite for attitude and position control. Moreover a detailed feasibility study will be also conducted to evaluate the possibility of using the plasma thruster to heat and decompose a secondary propellant. The feasibility study will asses the possibility of building up a combined-two-mode-thruster able to operate in the low-thrust high-efficiency plasma-mode and high-thrust low-efficiency secondary-propellant-plasma-enhanced mode. Only the plasma thruster will be developed and fully tested during this study. The main characteristics of the thruster are: Power 50 W Weight within 1.5 kg Thrust >1.5 mN Specific Impulse (Isp) >1200 s The program will develop thought the following steps: a) Deep numerical-theoretical investigation through dedicated plasma-simulation tools. b) Extensive experimental campaign to validate codes, to investigate the physics phenomena involved and to proof thruster performance. c) The development of a thruster-prototype to be mounted on board of a mini-satellite to demonstrate technology feasibility, d)The study of all the critical issues related to the application to a mini-satellite e) the design and manufacturing of the mini-satellite mock up including all critical components f) analysis of scaling law to lower and higher power. As a final results of the project, a detailed analysis will be conducted in order to evaluate the possible application of the thruster in space missions requiring low thrust accurate attitude and position control.
Agency: European Commission | Branch: FP7 | Program: CSA-SA | Phase: AAT.2008.7.0.6. | Award Amount: 210.16K | Year: 2009
Ukraine has a proud heritage in aeronautics dating from the Soviet era. It is one of the few countries in the world to have research, engineering and production capabilities across a wide range of aeronautics technologies. Despite these strengths, the participation of Ukrainian aeronautics actors in the ECs research framework programmes is very low (e.g. only 4 contracts were won under FP6-AEROSPACE). Consequently, the main aim of AERO-UKRAINE is to facilitate research co-operation between aeronautics actors from the EU and Ukraine. The project will achieve this via a range of activities: 1. Assessing and publicising the aeronautics collaboration potential between the EU and Ukraine. This involves mapping the Ukrainian aeronautics actors; reporting on opportunities for Ukrainian aeronautics actors in the EU; and production of a White Paper on aeronautics R&D in the Ukraine; 2. Raising awareness and understanding of EU aeronautics collaborative research. On the one side, this involves organising FP7 aeronautics events in Ukraine that combine awareness-raising, training and networking with EU aeronautics actors. On the other side, it involves Ukrainian aeronautics actors presenting their aeronautics research at aeronautics events in the EU; 3. Supporting participation in FP7 aeronautics research. This involves establishing an FP7 Aeronautics NCP in Ukraine and supporting Ukrainian aeronautics organisations to join consortia preparing FP7 research proposals. AERO-UKRAINEs measurable results include: a. White Paper on aeronautics R&D in the Ukraine; b. Website and publicly available information about 50\ aeronautics actors in Ukraine; c. Organisation of 2 FP7 aeronautics events in Ukraine; d. Participation in 3 aeronautics events in the EU; e. Establishment of an FP7 Aeronautics NCP in Ukraine; f. Support to 6\ Ukrainian aeronautics actors to join consortia preparing FP7 research proposals; g. Organisation of final dissemination conference in Kiev.
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: AAT.2013.4-4. | Award Amount: 5.59M | Year: 2013
CORSAIR project is a wide investigation concerning the capabilities of Cold Spray Technology for maintenance and repair of aeronautic frames and components. Today, deep and systematic investigation in Cold Spray is required to better understand the capabilities and fully validate the technology in aeronautics. In this scenario, the activities planned in CORSAIR project are (1) Explore the real capabilities of Cold Spray in several practical examples of aeronautic repair applications; real components to be repaired will be selected by aeronautic companies and cold spray repair protocols defined during the project. A condensed list of the parts and repairs considered during the project includes the Repairs of New Parts: castings and machined parts exhibiting different kind of defects; and the Restoration of Serviced Parts and components. The Base and deposition Materials are Light Alloys such as Al, Ti and Mg alloys. Homogeneous Repair (repair where the deposited material is the same of the base material) and Heterogeneous Repair (repair where the deposited material is different with respect to the base material) will be considered. (2) deep investigate the coating and repair characteristics (mechanical, microstructural, thermal and chemical properties) in order to finely tune and define where Cold Spray could be further applied for maintenance and repair in aeronautics. (3) deep investigate the effect and the characteristics of feedstock materials required for deposition (4) to give the required reliability to the coating deposition and repair processes to validate the technology for aeronautic industry. (5) To surpass the actual technological limitations of line-in-sight Cold Spray deposition process developing new nozzles for out-of-view surfaces. (6) To develop a New Industrial Portable Cold Spray Unit to extend the capabilities of in situ maintenance and repair applications. CORSARI has been previously submitted to AAT-2012-RTD-1 obtaining a score of 13/15.
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: AAT.2010.1.1-2.;AAT.2010.4.1-2. | Award Amount: 4.34M | Year: 2011
Aeronautics is a key asset for the future of Europe, but nowadays the industry has to face the challenge of More Affordable, Safer, Cleaner and Quieter while at the same time accounting for a demand that will triple over the next 20 years. WASIS project aims to rise to this challenge with the development of a composite fuselage structure based on the lattice stiffening concept, optimizing geometrical and mass properties of transition zones of fuselage structural joints. Project overall concept is focused on simultaneous meeting environmental demands and rising safety coupled with design and manufacturing cost-efficiency improvement. The lattice approach allows composites to obtain more efficient mechanical behaviour, reducing weight and optimizing structure performance, which will be proved by comparative simulations against other approaches. This will be combined with specially designed semi-loop and micro-pin joining elements to provide the ability of innovative non-regular lattice structure manufacturing, save aircraft weight, avoid fuselage section weakening due to cutting reinforcement fibres. Furthermore, the structure will also be developed to better withstand worst situation loadings, assessing safety through the large adoption of simulation and virtual testing from the very first design stages to analyze explosions and material damping. Developed innovative fuselage section design will be merged with high-productive filament winding technology to reduce manufacturing costs and time, and samples will be manufactured in order to prove how the different concepts fit together. Complete testing of the samples will be applied to prove the wafer approach. As a result of this project integrated approach sufficient fuselage weight savings, manufacturing cost/time efficiency and safety increasing are to be achieved.
Agency: European Commission | Branch: H2020 | Program: CSA | Phase: MG-1.5-2016-2017 | Award Amount: 1.00M | Year: 2016
The overall aim of the AERO-UA project is to stimulate aviation research collaboration between the EU and Ukraine through strategic and targeted support. AERO-UA is focused solely on Ukraine, because the country has a huge aerospace potential but a low level of aviation research collaboration with the EU. Ukraines aerospace sector spans the full spectrum of systems and components development and production with OEMs, Tier 1 and 2 suppliers, aeroengine manufacturers, control systems manufacturers, R&D institutions, aeronautic universities, and SMEs. This is also reflected in the sectors important contributor to the countrys economy (e.g. aircraft production of 1,9 billion in 2011). Ukrainian aerospace organisations possess unique know-how that can help Europe address the challenges identified in the ACARE SRIA / Flightpath 2050 Report. Furthermore, following the signing of the Agreement for the Association of Ukraine to Horizon 2020 in March 2015, Ukrainian organisations are eligible to participate in Clean Sky 2 and H2020 Transport on the same funding terms as those from EU member states. Equally, genuine commercial opportunities exist for European aviation organisations to help modernise Ukraines aerospace sector. The AERO-UA project will achieve its overall aim via four high-level objectives: 1. Identifying the barriers to increased EU-UA aviation research collaboration; 2. Providing strategic support to EU-UA aviation research collaboration; 3. Supporting EU-UA aviation research knowledge transfer pilot projects; and 4. Organising awareness-raising and networking between EU-UA stakeholders. The AERO-UA consortium is comprised of key EU and UA aviation organisations that will implement WPs closely mapped to the high-level objectives. The consortium will be supported by an Advisory Board involving Airbus, DLR, Min. Education and Science of Ukraine, Ukrainian State Air Traffic Services Enterprise and retired Director of EADS Jean-Pierre Barthlemy.
Agency: European Commission | Branch: H2020 | Program: CSA | Phase: MG-1.5-2016-2017 | Award Amount: 2.00M | Year: 2016
Aviation is a vital industrial sector of Europes society and economy. For several historical reasons the economic activities in this field are unevenly distributed across Europe. Statistics show that also the R&D effort, which always comes along with the aviation, mirrors this allocation. On one hand, there are countries and regions featuring low involvement in aviation research and also low participation in the EU Framework Programmes; on the other some regions are heavily involved in aviation R&D and are origin of wealth and prosperity. RADIAN is a multi-step project which intends to overcome this misbalance by identification of barriers for international collaboration in aviation research at EU level and by subsequent development and verification of solutions and measures on level of the European regions. The initial step is to assess the impact of regional, national and international environment on aviation actors. An impact is considered to become a barrier in case it has a detrimental nature or significantly differs from the pan-European average. By systematically comparing single impact scenarios for various actors located in different European regions, barriers for cooperation will be identified. Having this verified knowledge, 12 target regions are identified to derive, verify and execute tailored activity plans aiming at the enhancement of the actors ability to cooperate by reducing the disadvantageous impact or by the advancement of actors own assets, knowledge and abilities. Another field of work of RADIAN is a self-sustaining collaboration platform which acts as a host for transnational exchange. The platform aims at becoming a live portal, for providing personalised information related to the users interests such as open calls, available funding schemes, recent advancements etc.
Agency: European Commission | Branch: FP7 | Program: CSA-SA | Phase: INCO.2011-6.1 | Award Amount: 551.26K | Year: 2011
The overall aim of the KhAI-ERA project is to integrate the National Aerospace University (KhAI) into ERA, by reinforcing its cooperation capacities and twinning with European research and innovation organisations in its 3 strongest aerospace and IT research topics: A) Composite Materials, B) Advanced Manufacturing for Aircraft Assembly, and C) Dependable Embedded Systems. These are topics highly relevant to the FP7 Transport, Space, ICT and Research for SMEs work programmes. KhAI is the only university in Ukraine providing the full cycle of higher education in aerospace science. It has over 1146 researchers, 700 teachers and 12,000 students. The university has strong relationship with aerospace and machine-building industry in Kharkiv region and key Ukrainian enterprises. KhAI participates in many national and international R&D projects with public and private partners (e.g. STCU, Tempus, Boeing, Sukhoy, etc). Also, KhAI is scheduled to become the FP7 Aeronautics NCP for Ukraine. The KhAI-ERA project will build upon KhAIs existing strengths as a high-quality research institution via twinning and capacity building activities with the following 4 excellent European research and innovation organisations: Institute of Aerospace Engineering, Brno University of Technology, Fraunhofer Institute for Factory Operation and Automation, Centre for Integrated Electronic Systems and Biomedical Engineering, Tallinn University of Technology, and Intelligentsia Consultants. The capacity building activities will involve knowledge exchange, setting up joint experiments, and training development for KhAI researchers focused on composite materials, advanced manufacturing for aircraft assembly,dependable embedded systems, and the FP7 programme. Also, it will involve dissemination and strategy development to support the KhAI organisation. KhAI-ERA will be overseen by a steering committee involving the consortium partners plus members of the Ukrainian government, Airbus and ASD.