Search results
1 – 5 of 5Tahir Hikmet Karakoç, Can Özgür Colpan, Ozge Yetik and Alper Dalkıran
Andriy Mishchenko, Alper Dalkıran, Iryna Novakovska, Liliia Skrypnyk and Nataliia Ishchenko
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…
Abstract
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.
Details
Keywords
Ozgur Balli, Alper Dalkıran and Tahir Hikmet Karakoç
This study aims to investigate the aviation, energetic, exergetic, environmental, sustainability and exergoeconomic performances of a micro turbojet engine used in unmanned aerial…
Abstract
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.
Details
Keywords
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…
Abstract
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.
Details
Keywords
Since 2004, Turkish cinema has been witnessing an emergence of horror genre, now flooded with stories of possession by malevolent jinn, as transgressive, volatile figures of…
Abstract
Since 2004, Turkish cinema has been witnessing an emergence of horror genre, now flooded with stories of possession by malevolent jinn, as transgressive, volatile figures of abjection. These female-centred narratives rely both on Islamic cosmology and myths and folktales of pre-Islamic Anatolian oral culture. The chapter will first explore the reasons horror has been neglected in the century-long history of cinema in Turkey and move on to highlight the socio-economic, cultural, and political contexts that were catalysts for the horror genre’s emergence. Then, the chapter will discuss the codes and conventions of the genre and explore the unique place of Alper Mestçi’s 2007 film Haunted (Musallat), among its contemporaries in terms of the ways in which the film challenges these established codes and conventions. In analysing Haunted, the chapter will use the theoretical framework of Barbara Creed, Carol J. Clover and Julia Kristeva to discuss the monstrous-feminine and masculinity as abjection.
Details