Conference Proceeding
Refine
Year of publication
- 2009 (85) (remove)
Document Type
- Conference Proceeding (85) (remove)
Keywords
- Blitzschutz (3)
- Fließgewässer (3)
- Geodatenbank (3)
- Geodatenhaltung (3)
- Geoinformationen (3)
- Geoinformationssystem (3)
- Renaturierung <Ökologie> (2)
- Spacecraft (2)
- Stickstoffmonoxid (2)
- Wasserwirtschaft (2)
- nitric oxide gas (2)
- Aachen / Fachhochschule Aachen ; Graduierter ; Promotionsstudium (1)
- Adsorption (1)
- Autofluoreszenzverfahren (1)
- Biophoton (1)
- Biosensor (1)
- Blitzeinschlag (1)
- Braunkohlenbergbau (1)
- Breitband Markt (1)
- Bundesnetzagentur (1)
Institute
- Fachbereich Bauingenieurwesen (18)
- Fachbereich Maschinenbau und Mechatronik (16)
- Solar-Institut Jülich (14)
- Fachbereich Luft- und Raumfahrttechnik (11)
- IfB - Institut für Bioengineering (10)
- Fachbereich Energietechnik (8)
- Fachbereich Elektrotechnik und Informationstechnik (7)
- Fachbereich Medizintechnik und Technomathematik (7)
- Fachbereich Architektur (3)
- Kommission für Forschung und Entwicklung (3)
- ECSM European Center for Sustainable Mobility (2)
- FH Aachen (1)
- Fachbereich Wirtschaftswissenschaften (1)
The so-called "compound solar sail", also known as "Solar Photon Thruster" (SPT), is a solar sail design concept, for which the two basic functions of the solar sail, namely light collection and thrust direction, are uncoupled. In this paper, we introduce a novel SPT concept, termed the Advanced Solar Photon Thruster (ASPT). This model does not suffer from the simplified assumptions that have been made for the analysis of compound solar sails in previous studies. We present the equations that describe the force, which acts on the ASPT. After a detailed design analysis, the performance of the ASPT with respect to the conventional flat solar sail (FSS) is investigated for three interplanetary mission scenarios: An Earth-Venus rendezvous, where the solar sail has to spiral towards the Sun, an Earth-Mars rendezvous, where the solar sail has to spiral away from the Sun, and an Earth-NEA rendezvous (to near-Earth asteroid 1996FG3), where a large orbital eccentricity change is required. The investigated solar sails have realistic near-term characteristic accelerations between 0.1 and 0.2mm/s2. Our results show that a SPT is not superior to the flat solar sail unless very idealistic assumptions are made.
The absence of a general method for endotoxin removal from liquid interfaces gives an opportunity to find new methods and materials to overcome this gap. Activated nanostructured carbon is a promising material that showed good adsorption properties due to its vast pore network and high surface area. The aim of this study is to find the adsorption rates for a carboneous material produced at different temperatures, as well as to reveal possible differences between the performance of the material for each of the adsorbates used during the study (hemoglobin, serum albumin and lipopolysaccharide, LPS).