Refine
Year of publication
- 2007 (312) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (57)
- Fachbereich Wirtschaftswissenschaften (48)
- Fachbereich Bauingenieurwesen (41)
- Fachbereich Elektrotechnik und Informationstechnik (39)
- IfB - Institut für Bioengineering (33)
- Fachbereich Luft- und Raumfahrttechnik (31)
- Fachbereich Energietechnik (24)
- Fachbereich Maschinenbau und Mechatronik (24)
- Fachbereich Chemie und Biotechnologie (20)
- INB - Institut für Nano- und Biotechnologien (19)
Document Type
- Article (176)
- Conference Proceeding (67)
- Book (28)
- Part of a Book (17)
- Patent (6)
- Diploma Thesis (4)
- Report (4)
- Part of a Periodical (3)
- Contribution to a Periodical (2)
- Doctoral Thesis (2)
Keywords
- Aachen / Fachhochschule Aachen (4)
- Aachen University of Applied Sciences (4)
- Kanalisation (4)
- Fachhochschule Aachen (3)
- Führung (3)
- Leadership (3)
- Corporate Design (2)
- Finite-Elemente-Methode (2)
- Kanalisierung (2)
- Kanalnetz (2)
Stahlbau
(2007)
Stahlbau
(2007)
Solar Sail Kinetic Energy Impactor Trajectory Optimization for an Asteroid-Deflection Mission
(2007)
Kennwortgeschützter Zugang nur für Studierende bei Prof. Dr. Klaus-Peter Kämper. Sommersemester 2007. Version 2.3 vom 27.02.2007 I-8, 484 S.: Ill.; graph. Darst. Inhaltsverzeichnis: 1 Einführung: Was ist Mikrotechnik? 2 Fertigung im Reinraum 3 Der Werkstoff Silizium 4 Dünnschichttechnologie 5 Photolithographie 6 Ätztechnologie 7 „Bulk Micromachining“ 8 „Surface Micromachining“ 9 Trockenätzen tiefer Mikrostrukturen 10 LIGA-Technik 11 Mikrofunkenerosion 12 Laser in der Mikrotechnik 13 Mechanische Mikrofertigung 14 Photostruktuierbares Glas 15 Aufbau- und Verbindungstechnik
Siedlungswasserwirtschaft
(2007)
Siedlungswasserwirtschaft
(2007)
By DLR-contact, sample return missions to the large main-belt asteroid “19, Fortuna” have been studied. The mission scenario has been based on three ion thrusters of the RIT-22 model, which is presently under space qualification, and on solar arrays equipped with triple-junction GaAs solar cells. After having designed the spacecraft, the orbit-to-orbit trajectories for both, a one-way SEP mission with a chemical sample return and an all-SEP return mission, have been optimized using a combination of artificial neural networks with evolutionary algorithms. Additionally, body-to-body trajectories have been
investigated within a launch period between 2012 and 2015. For orbit-to-orbit calculation, the launch masses of the hybrid mission and of the all-SEP mission resulted in 2.05 tons and 1.56 tons, respectively, including a scientific payload of 246 kg. For the related transfer
durations 4.14 yrs and 4.62 yrs were obtained. Finally, a comparison between the mission scenarios based on SEP and on NEP have been carried out favouring clearly SEP.