TY - CHAP A1 - Schartner, Karl-Heinz A1 - Loeb, H. W. A1 - Dachwald, Bernd A1 - Ohndorf, Andreas T1 - Perspectives of electric propulsion for outer planetary and deep space missions T2 - European Planetary Science Congress 2009 N2 - Solar-electric propulsion (SEP) is superior with respect to payload capacity, flight time and flexible launch window to the conventional interplanetary transfer method using chemical propulsion combined with gravity assists. This fact results from the large exhaust velocities of electric low–thrust propulsion and is favourable also for missions to the giant planets, Kuiper-belt objects and even for a heliopause probe (IHP) as shown in three studies by the authors funded by DLR. They dealt with a lander for Europa and a sample return mission from a mainbelt asteroid [1], with the TANDEM mission [2]; the third recent one investigates electric propulsion for the transfer to the edge of the solar system. All studies are based on triple-junction solar arrays, on rf-ion thrusters of the qualified RIT-22 type and they use the intelligent trajectory optimization program InTrance [3]. Y1 - 2009 N1 - European Planetary Science Congress 2009, 13-18 September, Potsdam, Germany SP - 416 EP - 416 ER - TY - CHAP A1 - Brandes, Sinja A1 - Epple, U. A1 - Gligorevic, Snjezana A1 - Schnell, Michael A1 - Haindl, Bernhard A1 - Sajatovic, Miodrag T1 - Physical layer specification of the L-band Digital Aeronautical Communications System (L-DACS1) T2 - Integrated Communications, Navigation and Surveillance Conference : ICNS '09 : 13 - 15 May 2009, Arlington, Va. Y1 - 2009 SN - 978-1-4244-4733-6 ; 978-1-4244-4734-3 SP - 1 EP - 12 ER - TY - CHAP A1 - Schlenkhoff, Andreas A1 - Bung, Daniel B. T1 - Prediction of oxygen transfer in self-aerated skimming flow on embankment stepped spillways T2 - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada Y1 - 2009 SN - 9789078046080 SP - 1 CD-ROM ER - TY - CHAP A1 - Kern, Alexander A1 - Dikta, Gerhard T1 - Probability of damage of electrical and electronic systems due to indirect lightning flashes - investigation of data from German insurance companies N2 - In the presented paper data collected from the field related to damage statistics of electrical and electronic apparatus in household are reported and investigated. These damages (total number approx. 74000 cases), registered by five German insurance companies in 2005 and 2006, were adviced by customers as caused by lightning overvoltages. With the use of stochastical methods it is possible, to reasses the collected data and to distinguish between cases, which are with high probability caused by lightning overvoltages, and those, which are not. If there was an indication for a direct strike, this case was excluded, so the focus was only on indirect lightning flashes, i.e. only flashes to ground near the structure and flashes to or nearby an incoming service line were investigated. The data from the field contain the location of damaged apparatus (residence of the policy holder) and the distances of the nearest cloud-to-ground stroke to the location of the damage registered by the German lightning location network BLIDS at the date of damage. The statistical data along with some complementary numerical simulations allow to verify the correspondence of the Standards rules used for IEC 62305-2 with the field data and to define some correction needs. The results could lead to a better understanding whether a damage reported to an insurance company is really caused by indirect lightning, or not. KW - Blitzschutz KW - lightning flash Y1 - 2009 ER - TY - CHAP A1 - Hellmanns, Mark A1 - Hartung, I. A1 - Dilger, Klaus A1 - Böhm, Stefan T1 - Quality assurance of manual guided joining and welding devices T2 - Proceedings of the IIW International Conference on Advances in Welding and Allied Technologies : July 16 - 17, 2009, Singapore Y1 - 2009 SN - 9789810832605 SP - 219 EP - 222 PB - International Institute of Welding CY - Roissy ER - TY - CHAP A1 - Epple, U. A1 - Brandes, Sinja A1 - Gligorevic, Snjezana A1 - Schnell, Michael T1 - Receiver optimization for L-DACS1 T2 - IEEE/AIAA 28th Digital Avionics Systems Conference : 23-29 Oct. 2009 : Orlando, Fla. Y1 - 2009 SN - 978-1-4244-4078-8 SP - 4B1-1 EP - 4B1-12 ER - TY - CHAP A1 - Hartung, I. A1 - Dilger, Klaus A1 - Hellmanns, Mark A1 - Böhme, Stefan T1 - Repair of non-weldable steel structures to extend the life cycle T2 - Proceedings of the IIW International Conference on Advances in Welding and Allied Technologies : July 16 - 17, 2009, Singapore. (Welding in the world ; 53.2009, special issue) Y1 - 2009 SN - 978-981-08-3259-9 SP - 569 EP - 574 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Starke, Günther T1 - Robotertechnik für individuelle Automatisierungslösungen und unterschiedlichste Prozessanwendungen : 17. Internationale Fachmesse „Schweißen & Schneiden 2009“ – Stand und Entwicklungstendenzen T2 - Schweissen und Schneiden Y1 - 2009 SN - 0036-7184 (Print) SP - N 13 (nach Seite 716) PB - DVS - Deutscher Verband für Schweißen und Verwandte Verfahren e.V. ER - TY - CHAP A1 - Platzbecker, Frank T1 - Rückbau von drei Indewehren bei Eschweiler/Weisweiler – Renaturierung unter schwierigen Bedingungen N2 - Dipl.-Ing. Frank Platzbecker - Ingenieurbüro H. Berg & Partner GmbH, Aachen. 17 Folien (S. 92-108). Beitrag zum 2. Aachener Softwaretag in der Wasserwirtschaft <2, 2009, Aachen>. Praxisbericht zum Rückbau von drei Wehren an der Inde in Eschweiler-Weisweiler. KW - Renaturierung <Ökologie> KW - Stauanlage Y1 - 2009 ER - TY - CHAP A1 - Gligorevic, Snjezana A1 - Jost, T. A1 - Walter, M. T1 - Scatterer based airport surface channel model T2 - IEEE/AIAA 28th Digital Avionics Systems Conference : DASC '09 ; 23 - 29 [i.e. 25 - 29] Oct. 2009, Orlando, Fla. Y1 - 2009 SN - 978-1-4244-4078-8 SP - 4C2-1 EP - 4C2-10 ER - TY - CHAP A1 - Bung, Daniel B. A1 - Schlenkhoff, Andreas A1 - Oertel, M. T1 - Self-aerated skimming flow on embankment stepped spillways T2 - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada Y1 - 2009 SN - 9789078046080 SP - 1 CD-ROM ER - TY - CHAP A1 - Ferrein, Alexander A1 - Potgieter, Anet A1 - Steinbauer, Gerald T1 - Self-aware robots - What do we need from learning, deliberation, and reactive control? T2 - HYCAS 2009 : International Workshop on Hybrid Control of Autonomous Systems : Integrating Learning, Deliberation and Reactive Control : Pasadena, Calif., 13 July 2009 Y1 - 2009 SP - 1 EP - 5 PB - AAAI Pr. ER - TY - CHAP A1 - Behrens, Jörg A1 - Frentzel, Ralf A1 - Kern, Alexander T1 - Simulation der transienten Spannungsverläufe im Eigenbedarfsnetz eines Großkraftwerks bei einem kraftwerksnahen Blitzeinschlag in die Hochspannungs-Freileitung T1 - Simulation of transient voltage curve of a house-load operation net-work of large power plant by a lightning strike in a high-voltage over-head line closed to the power plant N2 - 8. VDE/ABB-Blitzschutztagung, 29. - 30. Oktober 2009 in Neu-Ulm. Blitzschutztagung <8, 2009, Neu-Ulm> Berlin : VDE Verl. 2009 Großkraftwerke können durch Blitzentladungen mit potentiellen Auswirkungen auf deren Verfügbarkeit und Sicherheit gefährdet werden. Ein sehr spezielles Szenario, welches aus aktuellem Anlass zu untersuchen war, betrifft den kraftwerksnahen Blitzeinschlag in die Hochspannungs-Freileitung am Netzanschluss der Anlage. Wird nun noch ein sogenannter Schirmfehler unterstellt, d.h. der direkte Blitzeinschlag erfolgt in ein Leiterseil des Hoch- bzw. Höchstspannungsnetzes und nicht in das darüber gespannte Erdseil, so bedeutet dies eine extreme elektromagnetische Einwirkung. Der vorliegende Beitrag befasst sich mit der Simulation eines solchen Blitzeinschlages und dessen Auswirkungen auf den Netzanschluss und die Komponenten der elektrischen Eigenbedarfsanlagen eines Kraftwerks auf den unterlagerten Spannungsebenen. Die dabei gewonnenen Erkenntnisse lassen sich ohne Einschränkungen auf Industrieanlagen mit Mittelspannungs-Netzanschluss und ohne eigener Stromversorgung übertragen. N2 - Lightning discharge can endanger large power plants with potential influence on their availability and reliability. A very special scenario, which was currently to analyse, is the lightning strike close to the high-voltage overhead line at the grid of the power plant. Supposing a failure of shielding and that the lightning strike goes directly into the line then the elec-tromagnetic effect is extremely high. The following article gives attention to the simulation of lightning strike and their effects to the connection with the grid and the components of the house-load operation of a large power plant especially to the lower voltage level sections. These results are transferable to industrial plants which have no own power supply. KW - Blitzschutz KW - Blitzeinschlag KW - lightning strike Y1 - 2009 SN - 978-3-8007-3197-8 ER - TY - CHAP A1 - Alexopoulos, Spiros A1 - Hoffschmidt, Bernhard A1 - Rau, Christoph A1 - Schwarzbözl, Peter T1 - Simulation results for a hybridization concept of a small solar tower power plant T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Schwarzer, Klemens A1 - Schwarzer, Tarik T1 - Stand und Entwicklung der Meerwasserentsalzung T2 - Neue Herausforderungen und Chancen in der Wasserversorgung : Seminar des Fachgebiets Wasserversorgung und Grundwasserschutz im Rahmen des 1. Darmstädter Ingenieurkongresses Bau und Umwelt am 14. und 15.09.2009. Schriftenreihe WAR. 205 Y1 - 2009 SN - 978-3-940897-01-5 SP - 99 EP - 120 PB - Inst. WAR CY - Darmstadt ER - TY - CHAP A1 - Fissabre, Anke A1 - Niethammer, Bernd T1 - The Invention of Glazed Curtain Wall in 1903 – The Steiff Toy Factory T2 - Proceedings of the Third International Congress of Construction History, TU Cottbus 20.-24. Mai 2009, Vol 2 Y1 - 2009 SN - 978-3-936033-31-1 SP - 595 EP - 602 PB - Neunplus1 CY - Berlin ER - TY - CHAP A1 - Koll, Gerrit A1 - Schwarzbözl, Peter A1 - Hennecke, Klaus A1 - Hartz, Thomas A1 - Schmitz, Mark A1 - Hoffschmidt, Bernhard T1 - The Solar Tower Jülich - a research and demonstration plant for central receiver systems T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Hirsch, Tobias A1 - Abel, Dirk A1 - Bohn, Dieter A1 - Diehl, Moritz A1 - Hoffschmidt, Bernhard A1 - Pitz-Paal, Robert T1 - The Virtual Institute for Central Receiver Power Plants - vICERP T2 - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings Y1 - 2009 SN - 9783000287558 PB - Deutsches Zentrum f. Luft- u. Raumfahrt CY - Stuttgart ER - TY - CHAP A1 - Fellin, Wolfgang A1 - King, Julian A1 - Kirsch, Ansgar A1 - Oberguggenberger, Michael T1 - Uncertainty modelling and sensitivity analysis of tunnel face stability T2 - Safety, reliability and risk of structures, infrastructures and engineering systems : proceedings of the tenth International Conference on Structural Safety and Reliability (ICOSSAR 2009), Osaka, Japan, 13-17 September 2009 / ed.: Hitoshi Furuta ... Y1 - 2009 SN - 978-0-415-47557-0 SP - 112 EP - 114 PB - CRC Pr. CY - Boca Raton, Fla. [u.a.] ER - TY - CHAP A1 - Funke, Harald A1 - Esch, Thomas A1 - Roosen, Peter ED - Bartz, Wilfried J. T1 - Using motor gasoline for aircrafts - coping with growing bio-fuel-caused risks by understanding cause-effect relationship T2 - Fuels 2009 : mineral oil based and alternative fuels ; 7th international colloquium ; January 14 - 15, 2009 N2 - The utilisation of vehicle-oriented gasoline in general aviation is very desirable for both ecological and economical reasons, as well as for general considerations of availability. As of today vehicle fuels may be used if the respective engine and cell are certified for such an operation. For older planes a supplementary technical certificate is provided for gasoline mixtures with less than 1 % v/v ethanol only, though. Larger admixtures of ethanol may lead to sudden engine malfunction and should be considered as considerable security risks. Major problems are caused by the partially ethanol non-withstanding materials, a necessarily changed stochiometric adjustment of the engine for varying ethanol shares and the tendency for phase separation in the presence of absorbed water. The concepts of the flexible fuel vehicles are only partially applicable in the view of air security. Y1 - 2009 SN - 978-3-924813-75-8 SP - 237 EP - 244 PB - Technische Akademie Esslingen (TAE) CY - Ostfildern ER -