Refine
Year of publication
Document Type
- Article (95)
- Conference Proceeding (45)
- Book (31)
- Part of a Book (16)
- Bachelor Thesis (1)
- Patent (1)
- Report (1)
Keywords
- Blitzschutz (4)
- Lightning protection (4)
- Literaturanalyse (3)
- Digitale Transformation (2)
- Digitalisierung (2)
- Erneuerbare Energien (2)
- Forschungsprozess (2)
- Hybridsystem (2)
- Robotic Process Automation (2)
- Text Analytics (2)
- cyber physical production system (2)
- digital shadow (2)
- photovoltaic system (2)
- renewable energy (2)
- wind turbine (2)
- 3D-Printing (1)
- Actuator disk modelling (1)
- Aeroelasticity (1)
- Alternative Energiequelle (1)
- Antarctica (1)
Institute
- Fachbereich Energietechnik (60)
- Fachbereich Elektrotechnik und Informationstechnik (54)
- Fachbereich Luft- und Raumfahrttechnik (21)
- Solar-Institut Jülich (17)
- Fachbereich Maschinenbau und Mechatronik (12)
- Fachbereich Medizintechnik und Technomathematik (12)
- ECSM European Center for Sustainable Mobility (9)
- IfB - Institut für Bioengineering (5)
- Fachbereich Wirtschaftswissenschaften (4)
- Fachbereich Bauingenieurwesen (3)
- INB - Institut für Nano- und Biotechnologien (3)
- Fachbereich Chemie und Biotechnologie (2)
- Fachbereich Gestaltung (2)
- Sonstiges (2)
- Nowum-Energy (1)
Nowadays, the most employed devices for recoding videos or capturing images are undoubtedly the smartphones. Our work investigates the application of source camera identification on mobile phones. We present a dataset entirely collected by mobile phones. The dataset contains both still images and videos collected by 67 different smartphones. Part of the images consists in photos of uniform backgrounds, especially collected for the computation of the RSPN. Identifying the source camera given a video is particularly challenging due to the strong video compression. The experiments reported in this paper, show the large variation in performance when testing an highly accurate technique on still images and videos.
The aerodynamic performance of propellers strongly depends on their geometry and, consequently, on aeroelastic deformations. Knowledge of the extent of the impact is crucial for overall aircraft performance. An integrated simulation environment for steady aeroelastic propeller simulations is presented. The simulation environment is applied to determine the impact of elastic deformations on the aerodynamic propeller performance. The aerodynamic module includes a blade element momentum approach to calculate aerodynamic loads. The structural module is based on finite beam elements, according to Timoshenko theory, including moderate deflections. Several fixed-pitch propellers with thin-walled cross sections made of both isotropic and non-isotropic materials are investigated. The essential parameters are varied: diameter, disc loading, sweep, material, rotational, and flight velocity. The relative change of thrust between rigid and elastic blades quantifies the impact of propeller elasticity. Swept propellers of large diameters or low disc loadings can decrease the thrust significantly. High flight velocities and low material stiffness amplify this tendency. Performance calculations without consideration of propeller elasticity can lead to decreased efficiency. To avoid cost- and time-intense redesigns, propeller elasticity should be considered for swept planforms and low disc loadings.