NEXTOR II

Sustainability Feasibility: A Framework for Greenhouse Gas Emissions Mitigation for Midsized U.S. Airports

Monsalud, Andrew
Ho, Denny
Rakas, Jasenka
2013

In recent years a significant amount of research has been conducted with the objective of improving efficiency of aircraft operations through optimized aircraft trajectories, thereby reducing harmful greenhouse gas (GHG) emissions such as CO2. However, as we look at the aviation system more holistically, we discover that there is a serious lack of comprehensive research that addresses reduction of GHG emissions at airports. Although the need for reduction in airport GHG emissions clearly exists, only a few US state or federal policies require airport operators to reduce such...

System and Method for Configuring Airport Terminals Using Mobile Terminal Gates

Rakas, Jasenka
2019

An airport terminal, having mobile terminal gates which are maneuverable to enable a controlling entity to configure the arrangement of terminal gate by quantity, type and/or spacing.

Trends in Aircraft Sizing and Fleet Mix

Rakas, Jasenka
2007

This paper analyzes current trends in aircraft characteristics and fleet mix and the implications of these trends on airport design. The airline industry is continuously exploring new ways of efficiently and economically operating their fleets in order to overcome the economic and financial pressures of a competitive operating environment. In response to these challenges, airlines are introducing aircraft into their fleets with lower fuel consumption and geometric characteristics to improve aircraft performance and efficiency. In the near future, the efficiency of gate operations and other...

Urban Air Mobility and Manned eVTOLs: Safety Implications

Bauranov, Aleksandar
Rakas, Jasenka
2019

New propulsion systems, artificial intelligence, sensor technology, and operational system autonomy are transforming the short to mid-range aviation industry. Electric vertical takeoff and landing (eVTOL) aircraft offer new possibilities for Urban Air Mobility (UAM). However, these developments will create operational issues and safety concerns, especially in the socalled transition period when these aircraft are expected to be manned by pilots, and assisted by onboard automation systems. In this transition period, different aircraft will have different systems for flying. Additionally,...

User Request Evaluation Tool and Controller–Pilot Data Link Communications: Integration Benefits Assessment

Rakas, Jasenka
Hansen, Mark
Jirajaruporn, Wanjira
Bolic, Tatjana
2003

Explored are the benefits of integrating User Request Evaluation Tool (URET) and Controller-Pilot Data Link Communications (CPDLC). Controller-pilot voice-communication messages and aircraft traffic flows and conflicts are analyzed in great detail in one representative, URET-operating en route sector. On the basis of the mapped URET data and the real-world communication messages, a base case and two alternative scenarios were analyzed to estimate the number of clearances that are given to pilots to resolve aircraft conflicts a sufficient time before the start of the conflict, and to...

Urban Surface and Air Mobility Control: A Microsimulation Integrating Intelligent Fly-Drive Vehicles Into Surface Traffic

Gavric, Slavica
Stevanovic, Aleksandar
Mitrovic, Nikola
Netjasov, Fedja
Rakas, Jasenka
2025

The emergence of the urban air mobility (UAM) concept promises to leverage a new generation of electrical vertical takeoff and landing (eVTOL) aircraft to provide three-dimensional and comprehensive transportation services. However, UAM does not provide door-to-door service and often requires other transportation modes to travel from origin to destination. To address this problem, study proposes the Urban Surface and Air Mobility (USaAM) concept that enables door-to-door travel, utilizing the same fly-drive vehicle for both surface and airborne transportation. The proposed USaAM concept...