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Purpose This study aims to determine the distance and duration to reach airports mixing height of 3,000 feet limit. Airport operations significantly contribute to the aircraft landing and take-off (LTO) cycle. Eurocontrol’s SO6 data sets comprise several abutted segment data to analyse the duration and distance for specific flights. Design/methodology/approach Two consequential methods have been used to calculate the distance and destination from the SO6 databases. First, SQL filtering and pivot tables were formed for the required data. Second, over 583,000 data lines for a year of Boeing 747–400 aircraft routes were calculated and filtered for the monthly assessments. Findings LTO cycles’ durations have deviated −24% to 76% from the ICAO assumptions. Distance facts determined for specific airports as 2.57 to 3.66 nm for take-off and 5.02 to 23.25 nm for the landing. The average duration of the aircraft’s in mentioned airport take-off are 66 to 74 s and 40 to 50 s; averages have been calculated as 70 to 44 s. Landing durations have been calculated for four different airports as 173 to 476 s. Practical implications This study provides a re-evaluation chance for the current assumptions and helps for better assessments. Each airport and aircraft combinations have their duration and distance figures. Originality/value This study has calculated the first LTO distances in the literature for the aerodrome. This method applies to all airports, airline fleets and aircraft if the segmented SO6 data are available.

Purpose The world society as a whole and Ukraine are realizing that climate change and decarbonization are critical issues. This study aims to determine whether the aviation and transportation industries in Ukraine have rearranged their priorities as a result of this investigation. The process of decarbonization and adaptation begins with a legislative point of view and then moves on to technology, improvements, infrastructure, energy and emissions stages to meet the primary goals. Design/methodology/approach An analysis of the content of the literature about decarbonization and the legislation and application processes for airport de-carbonization in Ukraine. The study focuses on the landing and take-off cycle of the airports. The statistics on the transportation of the Ukrainian territory have been looked at over time to determine whether or not there have been any shifts. Findings There are significant reduction figures found in the Poltava region. Double-figure emissions reductions in four years of series are 5.9%, 41.0% and 19.3%, in the respective years of 2018, 2019 and 2020, which is a 55.3% reduction compared with 2020 to 2017. Practical implications Because the transportation industry and aviation generate a significant amount of carbon dioxide, steps must be taken to cut emissions. The decarbonization process ought to proceed in the form of a series of actions to achieve carbon reduction goals with a broader range of participants. In addition, an aviation subsidy for biofuels may be required to initiate the shift by having the taxation change. Originality/value As far as the literature surveys, to the best of the authors’ knowledge, this is the first comprehensive Ukrainian decarbonization analysis that considers legislation, technology, improvements, infrastructure, energy and emissions in addition to just those four categories.

The rapid growth of airlines over the last period has led to the development of the aviation industry, resulting in increased requirements for ancillary services. Nowadays, the demand for the use of paper-based documents is increasing day by day as airlines encourage passengers to use more ancillary products. One of the most important issues in the aviation industry is flight safety. The procedures and instructions required for all aviation operations are organized in accordance with the regulations and printed on paper in accordance with the demands. For this reason, since it is mandatory to keep all aircraft maintenance, repair, and operation records on printed paper and to keep them for a certain period of time, aircraft fly with almost their entire weight on paper. Considering the global hazards in the world, although the aviation sector is the least environmentally damaging of all transportation sectors, new solutions have been sought to make aviation operations less harmful to the environment, minimize errors and risks, allow for faster communication, and be safer and more sustainable. In order to meet the demands, studies on reducing the use of paper have been brought to the agenda. In this study, after a literature review, real data from a maintenance, repair, and overhaul organization are used to suggest digital conveniences that can save costs, increase productivity, save space, facilitate documentation and information sharing, keep personal information more secure, and help the environment through paperless living.

Purpose This study aims to investigate the aviation, energetic, exergetic, environmental, sustainability and exergoeconomic performances of a micro turbojet engine used in unmanned aerial vehicles at four different modes. Design/methodology/approach The engine data were collected from engine test cell. The engine performance calculations were performed for four different operation modes. Findings According to the results, maximum energy and exergy efficiency were acquired as 19.19% and 18.079% at Mode 4. Total cost rate was calculated as 6.757 $/h at Mode-1, which varied to 10.131 $/h at Mode-4. Exergy cost of engine power was observed as 0.249 $/MJ at Mode-1, which decreased to 0.088 $/MJ at Mode-4 after a careful exergoeconomic analysis. Originality/value The novelty of this work is the capability to serve as a guide for similar systems with a detailed approach in the thermodynamic, thermoeconomic and environmental assessments by prioritizing efficiency, fuel consumption and cost formation. This investigation intends to establish a design of the opportunities and benefits that the thermodynamic approach provides to turbojet engine systems.

Rubber is one of the rare materials that can be used in many sectors and for multiple purposes. It can be used in a wide range of frameworks, from very simple coating materials to very complex spacecraft parts. Apart from natural rubber, compounds are also used for different purposes in rubber production. For a product with such a wide range of uses, the sustainability of its compounds is particularly important. The objective of this study is to investigate environmentally friendly and sustainable alternatives for rubber and some compounds, such as fillers and softeners. By doing this research with an academic method, the most suitable option is determined by taking the weights of the factors affecting this decision into consideration. As a result, the most suitable rubber, filler, and softener options are presented.

Purpose The use of unmanned aerial vehicles (UAVs) has significantly increased in the past decade and nowadays is being used for various purposes such as image processing, cargo transport, archaeology, agriculture, manufacturing, health care, surveillance and inspections. For this reason, using the appropriate image processing method for the intended use of UAVs increases the study’s success. This study aims to determine the most suitable one among the innovative methods that constitute the image processing system for a UAV to be used for surveillance purposes. Design/methodology/approach Analytical hierarchy process has been used in the solution of the decision problem to be handled in three stages, namely, platform, architecture and method. The most suitable alternative and the effect weights of these criteria results were determined at each stage. Findings As a result of this study, Jetson TX2 was determined as the most suitable embedded platform, ResNet is the optimum architecture and Faster R-convolutional neural networks was the best method in the image processing layer for a system that will provide surveillance with image processing method using UAV. Practical implications In UAV designs, where multiple hardware and software choices and system combinations exist, multi-criteria decision-making (MCDM) approaches can be used as a system decision mechanism. Originality/value The novelty of this work comes from the application of MCDM methods that are used as a multi-layered decision mechanism in UAV design.

To ensure all this, researchers from around the world work together on materials and aircraft component development testing, wind tunnel testing, emissions and combustion testing, computational modeling and simulations. [...]the human need for speedy transportation between continents and the living century’s pressure on effective production, air transportation must be sustained environmentally. The symposium welcomed a large number of topics, including civil aviation, sustainable aviation and aerospace vehicle, environmental modeling and software, air conditioning and refrigeration applications of aircraft, energy, exergy, performance analysis, flight mechanics and computational fluid dynamics, avionics and auto control, design, management, planning, development, aircraft maintenance, repair and overhaul; airworthiness, reliability/safety and so on.

Bu çalışmada, havaalanlarında enerji tüketimine bağlı çevresel sürdürülebilirlik için yöntemsel bir yaklaşım geliştirmiştir. Geliştirilen yöntem havaalanı yerleşkesindeki enerji tüketiminin çevresel etkilerini anlaşılabilir bir yol ile hesaplamaya çalışmış ve \"Methodology and Determinations for Airport Sustainability\" (MDAS – Havaalanı Sürdürülebilirliği için Tanımlar ve Yöntem) şeklinde isimlendirilmiştir. MDAS Yöntemi havalimanındaki enerji odaklarını uçaklar, yer hizmetleri, terminal binaları ve diğer binalar olmak üzere dört kümeye, uçak hareketlerine bağlı ve günlük tüketime bağlı olarak iki gruba ayırır. Uçak hareketleri, uçağın aldığı hizmetler ve uçağın hareketi ile kullanılan enerjiyi kapsamakta iken, günlük enerji tüketimi yerleşke içerisindeki terminal binaları ile diğer binalar ile ifade edilir. Yöntem, yolcu, uçak ve günlük işletim gibi büyüklükleri kullanarak anahtar gösterge değerleri tanımlamaktadır. Bu yöntem, çalışma içinde dört küme ile belirlenmiş olan uçak ve havaalanı için çevresel etkilerinin hesaplanması ve anlaşılması için bir başlama noktasıdır. Bununla birlikte, çalışma dışı tutulmuş genel ve askeri havacılık ile yolcuların havalimanına ulaşımları gibi önemli boyutlar da bulunmaktadır.

Havacılık, bakım yapılma zorunluluğu olan ve işletmeciliği son derece zahmetli bir sektördür. Hava araçlarındaki güvenlik önlemleri teknik işlerin ve uçuş güvenliğinin üzerinde yoğunlaşmıştır. Teknik önlemler bakım yapılması ve bakımın kalitesi üzerinde yoğunlaşmaktadır. Yapılan bakımların daha sonraları incelenmesi ve bunlardan yararlanılması gerekebilir. Kayıtlar çok dikkatli saklanmalı ve gerektiğinde bu kayıtlara çabuk ulaşılabilmelidir. Bilgisayarlı bakım yönetim sistemleri bu sorunlar için bir çözüm olmaktadır. Gelişen internet olanaklarının havacılık şirketlerinin sorunlarının bir çoğunu çözümleyeceği düşünülürse bu bakım yönetim sistemlerinin uygun bir şekilde diğer ihtiyaçlar ile birlikte internet üzerinden kullanımı gündeme gelmiştir. İnternet ile havacılığın ileride yollarının kesişeceği düşünülürse bakım kayıtlarının internet üzerinde saklanması ve işlenmesi kaçınılmaz olmaktadır. Yapılan bu çalışmada internet ile uçak bakımının nasıl birbirine yaklaştığı incelenmiş ve örnek bir programlama yapılmaya çalışılmıştır.