TY - CHAP A1 - Konrad, M. A1 - Chudoba, Rostislav A1 - Butenweg, Christoph A1 - Bruckermann, O. T1 - Textile reinforced concrete. Part II: Multi-level modeling concept T2 - Digital proceedings / IKM 2003, proceedings 16th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering [Elektronische Ressource : 10. - 12. Juni 2003, Weimar] / Bauhaus-Universität Weimar. Ed.: K. Gürlebeck; L. Hempel; C. Könke Y1 - 2003 SP - 1 EP - 11 PB - IKM CY - Weimar ER - TY - CHAP A1 - Chudoba, Rostislav A1 - Butenweg, Christoph A1 - Pfeiffer, Frank T1 - Textile reinforced concrete. Part I: Process model for collaborative research and development T2 - Digital proceedings / IKM 2003, proceedings 16th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering [Elektronische Ressource : 10. - 12. Juni 2003, Weimar] / Bauhaus-Universität Weimar. Ed.: K. Gürlebeck; L. Hempel; C. Könke Y1 - 2003 SP - 1 EP - 8 PB - IKM CY - Weimar ER - TY - JOUR A1 - Weigand, Christoph T1 - Technically Optimal Inspection Policy with Arithmetical Adaption JF - IMA Journal of Management Mathematics. 14 (2003), H. 4 Y1 - 2003 SN - 1471-678X N1 - weitere ISSN 1471-6798 (E) SP - 357 EP - 371 ER - TY - JOUR A1 - Simonis, A. A1 - Lüth, H. A1 - Wang, J. A1 - Schöning, Michael Josef T1 - Strategies of miniaturised reference electrodes integrated in a silicon-based „one chip“ pH sensor JF - Sensors. 3 (2003), H. 9 Y1 - 2003 SN - 1424-8220 SP - 330 EP - 339 ER - TY - JOUR A1 - Selmer, Thorsten A1 - Darley, Dan J. A1 - Clegg, William A1 - Harrington, Ross W. T1 - Stereocontrolled Synthesis of (2R,3S)-2-Methylisocitrate, a Central Intermediate in the Methylcitrate Cycle / Darley, Dan J. ; Selmer, Thorsten ; Clegg, William ; Harrington, Ross W. ; Buckel, Wolfgang ; Golding, Bernardt JF - Helvetica chimica acta. 86 (2003), H. 12 Y1 - 2003 SN - 1522-2675 SP - 3991 EP - 3999 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Dylla, Frank A1 - Lakemeyer, Gerhard T1 - Specifying Multirobot Coordination in ICPGolog - From Simulation towards Real Robots / Dylla, Frank ; Ferrein, Alexander ; Lakemeyer, Gerhard Y1 - 2003 N1 - AOS-4 at IJCAI-03 SP - 1 EP - 10 ER - TY - CHAP A1 - Seboldt, Wolfgang A1 - Dachwald, Bernd T1 - Solar sails for near-term advanced scientific deep space missions T2 - Proceedings of the 8th International Workshop on Combustion and Propulsion N2 - Solar sails are propelled in space by reflecting solar photons off large mirroring surfaces, thereby transforming the momentum of the photons into a propulsive force. This innovative concept for low-thrust space propulsion works without any propellant and thus provides a wide range of opportunities for highenergy low-cost missions. Offering an efficient way of propulsion, solar sailcraft could close a gap in transportation options for highly demanding exploration missions within our solar system and even beyond. On December 17th, 1999, a significant step was made towards the realization of this technology: a lightweight solar sail structure with an area of 20 m × 20 m was successfully deployed on ground in a large facility at the German Aerospace Center (DLR) at Cologne. The deployment from a package of 60 cm × 60 cm × 65 cm with a total mass of less than 35 kg was achieved using four extremely light-weight carbon fiber reinforced plastics (CFRP) booms with a specific mass of 100 g/m. The paper briefly reviews the basic principles of solar sails as well as the technical concept and its realization in the ground demonstration experiment, performed in close cooperation between DLR and ESA. Next possible steps are outlined. They could comprise the in-orbit demonstration of the sail deployment on the upper stage of a low-cost rocket and the verification of the propulsion concept by an autonomous and free flying solar sail in the frame of a scientific mission. It is expected that the present design could be extended to sail sizes of about (40 m)2 up to even (70 m)2 without significant mass penalty. With these areas, the maximum achievable thrust at 1 AU would range between 10 and 40 mN – comparable to some electric thrusters. Such prototype sails with a mass between 50 and 150 kg plus a micro-spacecraft of 50 to 250 kg would have a maximum acceleration in the order of 0.1 mm/s2 at 1 AU, corresponding to a maximum ∆V-capability of about 3 km/s per year. Two near/medium-term mission examples to a near-Earth asteroid (NEA) will be discussed: a rendezvous mission and a sample return mission. KW - solar sail KW - low-thrust KW - near-Earth asteroid KW - sample return KW - solar system Y1 - 2003 N1 - Proceedings of the 8th International Workshop on Combustion and Propulsion. Pozzuoli, Italy, 16 - 21 June 2002. ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar sailcraft of the first generation technology development / Seboldt, Wolfgang ; Dachwald, Bernd Y1 - 2003 N1 - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-S.03 ER - TY - JOUR A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - Solar sailcraft of the first generation mission applications to near-earth asteroids Y1 - 2003 N1 - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-Q.5.06 ER - TY - JOUR A1 - Schwarzer, Klemens A1 - Silva, Maria Eugênia Vieira da T1 - Solar cooking system with or without heat storage for families and institutions JF - Solar energy. 75 (2003), H. 1 Y1 - 2003 SN - 0038-092x N1 - 2. ISSN: 0375-9865 SP - 34 EP - 41 ER -