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Item type:Publication, Access status: without files , Betriebliche Maßnahmen zur Reduktion der Klimawirkung des Luftverkehrs: ein Vergleich(Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), 2026); Publicationtype: Doctoral Thesis18 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Eine System of Systems Analyse drohnen- und satellitengestützter Inspektionsverfahren für ausgedehnte NetzinfrastrukturenThis dissertation investigates the techno-economic suitability of drone- and satellite-based remote sensing methods for the inspection of extensive network infrastructures, such as power grids, gas pipelines, and railway lines. The objective of the work is to develop a methodology for a System-of-Systems conceptualization that compares various sensor carrier platforms regarding their efficiency and cost-effectiveness, with a particular focus on Unmanned Aerial Vehicles (UAVs) and satellites. The study begins with an analysis of the inspection requirements for these infrastructures, including the necessary data quality and frequency. Subsequently, the fundamentals of remote sensing sensor technology (e.g., LiDAR, RADAR, Infrared) as well as the characteristics of drones (fixed-wing, VTOL, multicopter) and satellites are explained. A central component is the development of a route optimization algorithm and a cost model that considers factors such as flight frequency (and the resulting utilization), range, operating bases, and fixed costs. The methodology is applied to two case studies: the German railway network and the U.S. natural gas transmission pipeline network. For the railway network, it is shown that highly automated VTOL (Vertical Take-Off and Landing) drones offer the most cost-efficient solution, provided that a sufficiently large range can be achieved with this configuration. When surveying the significantly larger area of the U.S. pipeline system, highly automated fixed-wing UAVs can more easily leverage their range advantages, as the requirements for efficient route planning are higher in this context. In both cases, satellites are economically competitive with drone systems of limited range capabilities, primarily when resolution requirements are low. In particular, the study highlights the economic added value of incremental range in drone aircraft design within a specific range spectrum. The results illustrate that through automation and scalability, drone systems can outperform traditional inspection methods (e.g., helicopters), although the choice of platform depends heavily on the infrastructure and specific requirements. The work concludes with a discussion of alternative approaches and an outlook on future research, particularly regarding increasing UAV range and their integration into hybrid systems with satellites.Publicationtype: Doctoral Thesis59 37 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Bewertung von Flugzeugentwürfen anhand der globalen Flugzeug-Routen-Zuordnung(2025); Publicationtype: Doctoral Thesis24 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Nutzwertanalyse neuartiger Datenlinktechnologie im Lufttransportsystem(Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), 2025); Publicationtype: Doctoral Thesis9 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , An ATS-based approach for the operational assessment of takeoff and landing assisting technologyPublicationtype: Doctoral Thesis22 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Treibstoffpreissicherung in der Luftfahrtindustrie: ein Modell zur Analyse, Planung und Gestaltung von Treibstoffpreissicherungsstrategien(Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR), 2025); Publicationtype: Doctoral Thesis31 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , An exploratory research on European ATM Network resilience through supervised learningPublicationtype: Doctoral Thesis15 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , An intelligent time and performance efficient algorithm for aircraft design optimizationPublicationtype: Doctoral Thesis58 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Entwicklung und öko-temporale Analyse von Ansätzen zur Regulierung von FlugfrequenzenIn this thesis, different approaches to regulate flight frequency (number of daily flights on a route) are analyzed according to ecologic-economic-temporal criteria. For this purpose, a two-step model for frequency reduction (FRED) is developed. The first step consists of 8 alternative frequency regulation approaches. In the second step, a fleet mix is assigned to frequency-reduced routes by keeping the available seat capacity constant. As a result of operating larger aircraft and fewer flights, minor (aircraft direct operating cost, fuel consumption) to notable (delays) efficiency gains are possible, however, these are limited by aircraft type availability, seasonal demand and regulatory risks.Publicationtype: Doctoral Thesis147 575 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Ansatz zur Modellierung generischer Flughäfen im globalen LufttransportsystemPublicationtype: Doctoral Thesis74