Abstract

The concept of 4D trajectory management relies on the prediction of aircraft trajectories in time and space. Due to changes in atmospheric conditions and complexity of the air traffic itself, the reliable prediction of system states is an ongoing challenge. The emerging uncertainties have to be modeled properly and considered in decision support tools for efficient air traffic flow management. Therefore, the subjacent causes for uncertainties, their effects on the aircraft trajectory and their dependencies to each other must be understood in detail. Besides the atmospheric conditions as the main external cause, the aircraft itself induces uncertainties to its trajectory. In this study, a cause-and-effect model is introduced, which deals with multiple interdependent uncertainties with different stochastic behavior and their impact on trajectory prediction. The approach is applied to typical uncertainties in trajectory prediction, such as the actual take-off mass, non-constant true air speeds, and uncertain weather conditions. The continuous climb profiles of those disturbed trajectories are successfully predicted. In general, our approach is applicable to all sources of quantifiable interdependent uncertainties. Therewith, ground-based trajectory prediction can be improved and a successful implementation of trajectory-based operations in the European air traffic system can be advanced. Document type: Article

Abstract

An innovative framework has been developed for teamwork of two quadcopter formations, each having its specified formation geometry, assigned task, and matching control scheme. Position control for quadcopters in one of the formations has been implemented through a Linear Quadratic Regulator Proportional Integral (LQR PI) control scheme based on explicit model following scheme. Quadcopters in the other formation are controlled through LQR PI servomechanism control scheme. These two control schemes are compared in terms of their performance and control effort. Both formations are commanded by respective ground stations through virtual leaders. Quadcopters in formations are able to track desired trajectories as well as hovering at desired points for selected time duration. In case of communication loss between ground station and any of the quadcopters, the neighboring quadcopter provides the command data, received from the ground station, to the affected unit. Proposed control schemes have been validated through extensive simulations using MATLAB®/Simulink® that provided favorable results. Document type: Article

Abstract

Weather events have a significant impact on airport performance and cause delayed operations if the airport capacity is constrained. We provide quantification of the individual airport performance with regards to an aggregated weather-performance metric. Specific weather phenomena are categorized by the air traffic management airport performance weather algorithm, which aims to quantify weather conditions at airports based on aviation routine meteorological reports. Our results are computed from a data set of 20.5 million European flights of 2013 and local weather data. A methodology is presented to evaluate the impact of weather events on the airport performance and to select the appropriate threshold for significant weather conditions. To provide an efficient method to capture the impact of weather, we modelled departing and arrival delays with probability distributions, which depend on airport size and meteorological impacts. These derived airport performance scores could be used in comprehensive air traffic network simulations to evaluate the network impact caused by weather induced local performance deterioration. Document type: Article

Abstract

TriControl is a controller working position (CWP) prototype developed by German Aerospace Center (DLR) to enable more natural, efficient, and faster command inputs. The prototype integrates three input modalities: speech recognition, eye tracking, and multi-touch sensing. Air traffic controllers may use all three modalities simultaneously to build commands that will be forwarded to the pilot and to the air traffic management (ATM) system. This paper evaluates possible speed improvements of TriControl compared to conventional systems involving voice transmission and manual data entry. 26 air traffic controllers participated in one of two air traffic control simulation sub-studies, one with each input system. Results show potential of a 15% speed gain for multimodal controller command input in contrast to conventional inputs. Thus, the use and combination of modern human machine interface (HMI) technologies at the CWP can increase controller productivity. Document type: Article

Abstract

"jats:p"A Fatigue Monitoring Tool (FMT) model was constructed for an operational airline in order to manage the fatigue levels of their crews in accordance with Fatigue Risk Management System (FRMS) practices. This article describes the implementation of the Fatigue Monitoring Tool model and the airline’s aims to put the recent scientific findings on aviation fatigue into practical use. The model consists of proxy points allotted to various duties and rest periods. Document type: Article

Abstract

ksandrs Urbahs  / Rima Mickevičienė / Vasilij Djačkov / Kristīne Carjova / Valdas Jankūnas / Mindaugas Zakarauskas / Natalia Panova / Dita Lasmane Published Online: 2017-03-14 | DOI: https://doi.org/10.1515/tae-2016-0012 Abstract The paper gives brief description of the conventional and innovative hydrography survey methods and constraints connected with the realization. Proposed hydrographic survey system based on the use of Unmanned Aerial and Maritime systems provides functionality to conduct hydrographic measurements and environment monitoring. System can be easily adapted to fulfil marine safety and security operations, e.g. intrusion threat monitoring, hazardous pollutions monitoring and prevention operations, icing conditions monitoring. Document type: Article

Abstract

"jats:p" This article presents a mathematical model estimating the probability of successful completion of the aircraft’s flight in case of aviation equipment failure in flight. This paper shows the relationship between the aircraft’s automatic control system and flight safety. The calculations of probability are made for the successful completion of the flight on Boeing 737 aircraft when the automatic control system has failed. Document type: Article

Abstract

"jats:p"Aircraft crew training corresponds to the interactive learning models of sensorimotor skill acquisition, and the dynamics of skill acquirement can be approximated by the exponential trend. A model of 5-grade assessment of separate exercises is offered. It helps to calculate a resulting evaluation, in accordance with which the progress level of a discrete exercise is evaluated. Such an evaluation forms one of the points for the analytical construction of a learning curve using the Gaussian method. Possible applications of the learning curve are covered. Document type: Article

Abstract

"jats:p" Most flight delays in aviation enterprises are related to air traffic management and technical centers. This can happen for various reasons: untimely removal of defects, lack of spare parts, deficiencies in maintenance scheduling, etc. Another reason may be inefficient management in the system of preparing the aircraft for departure. The article suggests a possible option of such an assessment as well as the results obtained from the use of this methodology applied to a specific airline. Document type: Article

Abstract

The Development of Fatmawati Airport in Supporting Visit Wonderful Bengkulu 2020: This research is conducted with regard to the strategy of Fatmawati Airport Bengkulu development in supporting Visit Bengkulu 2020. The purpose of this research is not only related to the development strategy of Fatmawati Airport Bengkulu in supporting Visit Bengkulu 2020 but also to determine the accessibility of the airport to the tourism sites. Primary and secondary data was used in this study. Data analysis was exercised using SWOT method and qualitative descriptive. The results of research indicate four Strength Opportunity (SO) strategies for the development of Fatmawati Airport Bengkulu, namely the need for increased investment cooperation and partnership with other agencies as the impact of the establishment of Fatmawati Airport Bengkulu as a BLU, airport development to serve the increase of air transport through the operation of wide body aircraft, increased commitment of excellent service by Fatmawati Airport Bengkulu with the support from the Ministry of Transportation and Local Government in the construction of airport facilities and increased accessibility from and to the tourist attraction sites due to its strategic location in the city center while has also become the main node of transportation, and availability of connecting transportation modes to support the accessibility to and from the airport among others two BRT corridors of “Trans Rafflesia” which is planned to cross the tourism sites in Bengkulu City where corridor 1 will getting passengers to Panjang Beach and Marlborought Port and corridor 2 to Dendam Lake. Penelitian ini dilakukan terkait dengan strategi pengembangan Bandar Udara Fatmawati Bengkulu dalam mendukung program Visit Wonderful Bengkulu 2020. Tujuan penelitian ini adalah untuk mengetahui strategi pengembangan Bandar Udara Fatmawati Bengkulu dalam mendukungan visit Bengkulu 2020, dan untuk mengetahui ketersediaan aksesibilitas (moda lanjutan) dari bandar udara Fatmawati Bengkulu ke obyek wisata dan sebaliknya. Penelitian menggunakan data primer dan sekunder. Analisis data dengan metode analisis SWOT dan deskriptif kualitatif. Hasil penelitian menunjukkan terdapat 4 (empat) Strength Opportunity (SO) strategi dalam pengembangan Bandar Udara Fatmawati Bengkulu, yaitu perlunya peningkatan kerjasama investasi dan kemitraan dengan instansi lain sebagai dampak dari penetapan Bandar udara Fatmawati sebagai BLU, pengembangan bandar udara untuk dapat melayani peningkatan angkutan udara melalui pengoperasian pesawat berbadan besar (wide body), peningkatan komitmen pelayanan prima bandar udara Fatmawati dengan dukungan Kementerian Perhubungan dan Pemerintah Daerah dalam pembangunan fasilitas bandar udara dan peningkatan aksesibilitas dari dan ke objek wisata karena letak bandar udara yang strategis di pusat kota dan menjadi simpul utama transportasi. Ketersedian moda lanjutan untuk mendukung aksesibilitas dari dan ke bandar udara antara lain 2 (dua) koridor BRT “Trans Rafflesia” yang direncanakan akan melintasi obyek wisata di Kota Bengkulu yaitu koridor 1 melewati pantai Panjang dan benteng Marlborough serta koridor 2 yang melewati obyek wisata danau Dendam. Document type: Article