35 research outputs found

    Interviewereffekte: zusammenfassende Darstellung von Arbeiten, die im Rahmen zweier von ZUMA betreuter Projekte entstanden sind

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    Intervieweffekte: zusammenfassende Darstellung von Arbeiten, die im Rahmen zweier von ZUMA betreuten Projekte entstanden sind

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    Ausgangspunkt ist die Erkenntnis, daß das Antwortverhalten von Befragten von nicht-intendierten Einflüssen mitabhängig ist (Einfluß des Interviewers und der Situation). Die Arbeit geht den Fragen nach, welchen Einfluß derartige Faktoren überhaupt haben und welches die erklärungskräftigsten Interviewermerkmale sind (sozialstrukturelle Merkmale, spezifische Einstellungs- und Verhaltensweisen der Interviewer o.ä.). Entsprechende Hypothesen werden anhand zweier vom ZUMA betreuten Erhebungen überprüft. Als besonders erklärungskräftig werden drei Faktoren ausgewiesen: Einstellungs- und Verhaltensmerkmale des Interviewers, seine Erfahrung und seine An- bzw. Abwesenheit während des Interviews. Demographischen Faktoren kam demgegenüber keine erhöhte, erst recht keine systematische Bedeutung zu. (AR

    High Power Electric Propulsion: MARS plus EUROPA – Already Beyond 2025!

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    It’s mid-term realization plus global strategic investments: the results of the European Russian DEMOCRITOS project (Horizon 2020) related to the MW class INPPS (International Nuclear Power and Propulsion System) flagship will be described. INPPS flagship includes high power electric thrusters cluster, supplied electric power by the nuclear reactor (successfully tested in Russia) and a solar power ring. Two INPPS versions were studied – the wide and arrow wing versions. Both versions have a futuristic design with standardized interfaces for several flagship subsystems. Especially the high payload mass of INPPS allows the transport of – for example – up to 12 t to JUPITER moon EUROPA and about 18 t to MARS – as a function of specific impulse of electric thrusters. INPPS flagship not only allows scientific, but especially commercial and communication payloads as well. This means industrial-scale production of space flight systems for robotic and human space exploration. International cooperation related to INPPS realization are necessary within an International High Power Space Transportation program to realize the DEMOCRITOS core, ground and space components until 2025. DEMOCRITOS project included partners from Europe, Russia and a Brazilian guest observer and received several inputs from NASA Cleveland and JAXA Tokyo

    Humans to Mars: by MARS- plus EUROPA-INPPS Flagship Mission

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    The first non-human INPPS (International Nuclear Power and Propulsion System) flagship flight with orbits Earth-Mars-Earth-Jupiter/Europa (after 2025) is the most maximal space qualification test of INPPS flagship to carry out the second INPPS flagship flight to Mars with humans (in the 2030th). This high power space transportation tug is realistic because of A) the successful finalization of the European-Russian DEMOCRITOS and MEGAHIT projects with their three concepts of space, ground and nuclear demonstrators for INPPS realization (reached in 2017), B) the successful ground based test of the Russian nuclear reactor with 1MWel plus important heat dissipation solution via droplet radiators (confirmed in 2018), C) the space qualification of the Russian reactor by 2025 and D) the perfect celestial constellation for a Earth-Mars/Phobos-Earth-Jupiter/Europa trajectory between 2026 and 2035. Therefore the talk sketches the preparation status of INPPS flagship with its subsystems. Critical performance will be studied by parallel realizations of the ground and nuclear demonstrators of DEMOCRITOS (until 2025). The space qualification of INPPS with all subsystems including the nuclear reactor in the middle of the 2020th plus the INPPS tests for about one to two years - first in high Earth orbit robotic assembly phase of INPPS and later extended in nearby Earth space environment flight - means a complete concepts driven approval for all applied INPPS space subsystem technologies. It is also important to consider wider aspects for the overall mission implementation phase. Component like the nuclear reactor as the power source for the propulsion system will have to agree with the 1992 UN principles relevant to the use of nuclear power sources (NPS) in outer space. Therefore this talk will look into the legal and policy issues of nuclear space systems related to the international realization of mission design, requirements of associated safety regulations (including AI applications in the subsystems) and new aspects for INPPS flagship commercialization and new media communication on board
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