Multi-disciplinary optimization in aeronautical engineering

2017 ◽  
Vol 231 (12) ◽  
pp. 2305-2313 ◽  
Author(s):  
Tomasz Goetzendorf-Grabowski
Keyword(s):  
Aircraft Design ◽  
Stability Control ◽  
Multidisciplinary Optimization ◽  
Air Transport ◽  
Special Focus ◽  
Significant Progress ◽  
Propulsion Systems ◽  
High Quality ◽  
Technical Aspects ◽  
Aeronautical Engineering

Nowadays, optimization is a very popular tool used to improve existing projects. The optimization covers different disciplines by linking them into multidisciplinary process of design. Existing software tools allow to very effectively solve particular problems giving high quality solutions which were previously very hard to achieve. Aeronautical engineering is a domain/field which links many disciplines: aerodynamics, stability, control, structural analysis, materials, propulsion systems, avionics, etc. Therefore, the multidisciplinary optimization results in very significant progress not only in aircraft design but also in air transport, which links technical aspects with economical questions. The paper presents selected aspects of using the multidisciplinary optimization in aeronautical engineering with special focus on multidisciplinary aircraft design.

scholarly journals A SHORT HISTORY OF SEMINARS ON “RECENT RESEARCH AND DESIGN PROGRESS IN AERONAUTICAL ENGINEERING AND ITS INFLUENCE ON EDUCATION”

Aviation ◽  
2007 ◽  
Vol 11 (1) ◽  
pp. 3-5 ◽  
Author(s):  
Zdobyslaw Goraj ◽  
Jonas Stankunas ◽  
Martinsh Kleinhofs ◽  
Villu Mikita ◽  
Antonin Pištek
Keyword(s):  
Mutual Influence ◽  
Aircraft Design ◽  
University Education ◽  
Common Interest ◽  
Special Focus ◽  
Area Of Interest ◽  
Aeronautical Engineering ◽  
Aeronautical Science ◽  
Research And Education ◽  
Research And Design

The aeronautical sciences and aerospace industry are by nature international. Coming from this thesis, we decided in 1994 to organise an international meeting, further called the Seminar, devoted to “RECENT RESEARCH AND DESIGN PROGRESS IN AERONAUTICAL ENGINEERING AND ITS INFLUENCE ON EDUCATION”. The objective of that first Seminar and following ones was to organise a multinational forum for discussion and interchange of aeronautical issues and subjects, focusing on their influence on university education. Other goals included promoting international co-operation in the study of the problems in aeronautical science and technology in which there was a common interest and facilitating personal contacts between scientists, university lecturers, and industrial engineers. Our area of interest was aeronautical technology, as it is widely understood. The special focus of our Seminars was concentrated on Aircraft Design, Aircraft Oriented Aerodynamics, Flight Dynamics, Helicopter Dynamics, Computational Fluid Dynamics, Materials and Structures, Control and Flight Tests. All these topics and their influence on the teaching process at a technical university were considered — what we believe is a specific feature of our Seminars. We notice a mutual influence between contemporary research and education; it is impossible to deliver a modern university lecture without conducting one’s own serious research or design, and it is almost impossible to become a serious, successful researcher or designer without being a graduate of a good, contemporary university. The other specific feature of our Seminars is a student session. An international jury of professors and deans from aerospace faculties all over the world observes the sessions and awarded the best student papers diplomas (sometimes with small prizes contributed by different institutions). We believe that the student sessions promote personal contacts between students and foreign lecturers and encourage students to work harder in the future. For all of us, it is the promise of a new generation of engineers, designers and scientists.

scholarly journals THE FUTURE OF PASSENGER AIR TRANSPORT – VERY LARGE AIRCRAFT AND OUT KEY HUMAN FACTORS AFFECTING THE OPERATION AND SAFETY OF PASSENGER AIR TRANSPORT

2017 ◽  
Vol 12 ◽  
pp. 104
Author(s):  
Petra Skolilova
Keyword(s):  
Human Factors ◽  
Human Error ◽  
Operating Cost ◽  
Aircraft Design ◽  
Air Transport ◽  
Final Decision ◽  
Factors Affecting ◽  
Fuel Burn ◽  
The Future ◽  
The Impact

The article outlines some human factors affecting the operation and safety of passenger air transport given the massive increase in the use of the VLA. Decrease of the impact of the CO2 world emissions is one of the key goals for the new aircraft design. The main wave is going to reduce the burned fuel. Therefore, the eco-efficiency engines combined with reasonable economic operation of the aircraft are very important from an aviation perspective. The prediction for the year 2030 says that about 90% of people, which will use long-haul flights to fly between big cities. So, the A380 was designed exactly for this time period, with a focus on the right capacity, right operating cost and right fuel burn per seat. There is no aircraft today with better fuel burn combined with eco-efficiency per seat, than the A380. The very large aircrafts (VLAs) are the future of the commercial passenger aviation. Operating cost versus safety or CO2 emissions versus increasing automation inside the new generation aircraft. Almost 80% of the world aircraft accidents are caused by human error based on wrong action, reaction or final decision of pilots, the catastrophic failures of aircraft systems, or air traffic control errors are not so frequent. So, we are at the beginning of a new age in passenger aviation and the role of the human factor is more important than ever.

scholarly journals Air transport liberalisation in the European Union and its impact on development of the civil aviation sector in Poland

2009 ◽  
Vol 12 (3) ◽  
pp. 45-58 ◽  
Author(s):  
Renata Pisarek
Keyword(s):  
European Union ◽  
Market Structure ◽  
European Community ◽  
Air Traffic ◽  
Air Transport ◽  
Civil Aviation ◽  
Special Focus ◽  
The European Union ◽  
Traffic Dynamics ◽  
Structure Changes

The objective of this paper is to present an overview of the process of air transport liberalisation within the European Community and its influence on development of the aviation market in Poland. The paper describes the stages of air transport liberalisation in the European Community and its implementation to the Polish market. The special focus is given to problems of existing effects of air transport liberalisation and perspectives of its development. The study primarily intends to examine market structure changes of the Polish civil aviation sector and air traffic dynamics over the years of Polish integration with the European Union, presenting the most up-to-date available statistics

scholarly journals Development of the Low Toxic Cross Polar Air Transport using Innovative Hydrogen Projection for Large Aircraft and Airships

2021 ◽  
Vol 2 (6) ◽  
pp. 1-4
Author(s):  
Ponyaev L
Keyword(s):  
International Law ◽  
Low Cost ◽  
Minimum Weight ◽  
Aircraft Design ◽  
Air Transportation ◽  
Air Transport ◽  
Airport Infrastructure ◽  
Design Options ◽  
Transportation Routes ◽  
Large Aircraft

The new shortly and low cost Regular Airlines Cargo & PAX directions via Arctic Cross Polar Air Transportation Routes of the future High Ecology Efficiency and Safety ICAO Strategy will be base on the more perspective for Trans Continental Airlines Operations by IATA International Law Regulations and World Climate Protect Law. Using the more shortly directions of Trans Polar Flight for Long-Haul Aircrafts (LHA) Routes by leader Airlines Sky Teams with Aeroflot are request to find new Geometrical Layout of Aircraft Design Industrial Projections & Products Lines. The increase in the dimension of LHA came into conflict with modern Airport Infrastructure and led to the search for alternative Arctic Planes & Dirigibles Options for constructively layout circuit solutions with protection of minimum weight and drag issues in order to deal with this contradiction. Computer Digital Aircraft Structural-Parametric Analysis of the influence of Aviation Infrastructure Constraints in the basing of LHA on the choice of alternative Design Options for Lift Fuselage Body or Flying-V layout was carried out.

Condition Monitoring of Ship Propulsion Systems: State-of-the-Art, Development Trend and Role of Digital Twin

2021 ◽  
Author(s):  
Amir R. Nejad ◽  
Etienne Purcell ◽  
Mostafa Valavi ◽  
Roman Hudak ◽  
Benjamin Lehmann ◽  
...  
Keyword(s):  
Condition Monitoring ◽  
Performance Monitoring ◽  
State Of The Art ◽  
Development Trend ◽  
The Arctic ◽  
Special Focus ◽  
Shipping Industry ◽  
Propulsion Systems ◽  
Digital Twin ◽  
Ship Propulsion

Abstract This paper describes the current implementations and development trends of condition monitoring as it pertains to ship propulsion systems. In terms of total incidents in the shipping industry in the last five years, failures relating to the propulsion system represent the majority. Condition monitoring offers effective early detection of failure which translates to increased reliability and decreased maintenance costs. Current industrial practices are often limited to performance monitoring rather than condition monitoring. Special focus is afforded to how condition monitoring is implemented on board ships, which regulatory codes are relevant and the summary of state-of-the-art research in marine machinery. Moreover, operation and monitoring in extreme environmental conditions, such as the Arctic and Antarctic with ice impact on the propulsion has been discussed. The new developments, in particular, digital twin approaches in health and condition monitoring have been highlighted, considering its pros and cons and potential challenges.

scholarly journals Perovskite-molecule composite thin films for efficient and stable light-emitting diodes

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Heyong Wang ◽  
Felix Utama Kosasih ◽  
Hongling Yu ◽  
Guanhaojie Zheng ◽  
Jiangbin Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Degradation Mechanism ◽  
Deep Understanding ◽  
Significant Progress ◽  
High Quality ◽  
Composite Thin Films ◽  
Light Emitting

AbstractAlthough perovskite light-emitting diodes (PeLEDs) have recently experienced significant progress, there are only scattered reports of PeLEDs with both high efficiency and long operational stability, calling for additional strategies to address this challenge. Here, we develop perovskite-molecule composite thin films for efficient and stable PeLEDs. The perovskite-molecule composite thin films consist of in-situ formed high-quality perovskite nanocrystals embedded in the electron-transport molecular matrix, which controls nucleation process of perovskites, leading to PeLEDs with a peak external quantum efficiency of 17.3% and half-lifetime of approximately 100 h. In addition, we find that the device degradation mechanism at high driving voltages is different from that at low driving voltages. This work provides an effective strategy and deep understanding for achieving efficient and stable PeLEDs from both material and device perspectives.

Practical problems of numerical optimization in aerospace sciences

2017 ◽  
Vol 89 (4) ◽  
pp. 570-578 ◽  
Author(s):  
Jacek Mieloszyk
Keyword(s):  
Design Process ◽  
Numerical Optimization ◽  
Optimization Problems ◽  
Aircraft Design ◽  
Lessons Learned ◽  
Multidisciplinary Optimization ◽  
Content Type ◽  
Design Procedures ◽  
Industry Practice

Purpose The paper aims to apply numerical optimization to the aircraft design procedures applied in the airspace industry. Design/methodology/approach It is harder than ever to achieve competitive construction. This is why numerical optimization is becoming a standard tool during the design process. Although optimization procedures are becoming more mature, yet in the industry practice, fairly simple examples of optimization are present. The more complicated is the task to solve, the harder it is to implement automated optimization procedures. This paper presents practical examples of optimization in aerospace sciences. The methodology is discussed in the article in great detail. Findings Encountered problems related to the numerical optimization are presented. Different approaches to the solutions of the problems are shown, which have impact on the time of optimization computations and quality of the obtained optimum. Achieved results are discussed in detail with relation to the used settings. Practical implications Investigated different aspects of handling optimization problems, improving quality of the obtained optimum or speeding-up optimization by parallel computations can be directly applied in the industry optimization practice. Lessons learned from multidisciplinary optimization can bring industry products to higher level of performance and quality, i.e. more advanced, competitive and efficient aircraft design procedures, which could be applied in the industry practice. This can lead to the new approach of aircraft design process. Originality/value Introduction of numerical optimization methods in aircraft design process. Showing how to solve numerical optimization problems related to advanced cases of conceptual and preliminary aircraft design.

scholarly journals Sports and Health as Cornerstones of Tourism Development: Case Study of Montenegro

2020 ◽  
Author(s):  
Anđela Jakšić-Stojanović ◽  
Neven Šerić
Keyword(s):  
Natural Resources ◽  
Driving Force ◽  
Tourism Development ◽  
International Market ◽  
The Other ◽  
Special Focus ◽  
Health Tourism ◽  
High Quality

The modern phenomenon of tourism is more focused on specific forms of tourism in which sports and health tourism play a very important role. That fact is not surprising having in mind that they represent interconnected activities that complement each other and give each other completely new dimension. On one side, sports and health represent very important content of tourist offer because of the fact they enable tourists to become active participants in various activities, and on the other side, they represent important driving force for visiting particular destination. The idea of this chapter is to provide a theoretical and practical framework of this issue with a special focus on case study of Montenegro. According to the results of the research that was carried out, the general conclusion is that Montenegro has extremely valuable natural resources and potentials for the development of sports and health tourism, but there are still a lot of challenges that should be faced in the future in order to improve the quality of tourist offer and the level of tourists’ satisfaction as well as to create completely new image of the destination and position it as high-quality sports and health tourist destination on international market.

scholarly journals Culinary events in the Slovenian countryside: Visitors’ motives, satisfaction, and views on sustainability

2021 ◽  
Vol 61 (1) ◽  
Author(s):  
Maja Topole ◽  
Primož Pipan ◽  
Primož Gašperič ◽  
Matjaž Geršič ◽  
Peter Kumer
Keyword(s):  
Cultural Heritage ◽  
Public Transport ◽  
Large Scale ◽  
Main Theme ◽  
Significant Progress ◽  
High Quality ◽  
Visitor Satisfaction ◽  
Main Challenge ◽  
Sustainable Materials ◽  
University Degree

This paper focuses on five culinary events on Slovenia’s Karst Plateau (Kras). It presents visitors’ motives for attending these events, their satisfaction with them, and their views on sustainability. These traditional culinary events, which take place in the same gastronomic region, differ in their scale, theme, character, and history. A survey was conducted among 244 visitors, approximately 50% of whom had a university degree. The most important motives for their visit include local cuisine; experiencing something new, different, or special; and exploring natural heritage and especially cultural heritage. Visitor satisfaction is the greatest at boutique culinary events, where the main theme is highlighted more strongly than at large-scale culinary events. The main challenge in terms of the sustainability of culinary events is public transport access to the venues. Significant progress would be made by reducing the amount of disposable packaging made from non-sustainable materials. The key to successful culinary events is high-quality services and ingredients, where the word local is key.

Sign in / Sign up

Export Citation Format

Share Document