Titlebook: VIIIth International Astronautical Congress Barcelona 1957 / VIII. Internationaler Astronautischer K; F. Hecht Book 1958 Springer-Verlag W

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,Instrumented Comets—Astronautics of Solar and Planetary Probes,piter are presented and evaluated. A classification of unmanned space vehicle systems is proposed. A number of instrumented comet systems is investigated and specific mission proposals made, such as the exploration of interplanetary plasma characteristics by solar-triggered thermonuclear probes and

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,Pilotage d’un astronef par des moyens radioélectriques,parabolo?de émetteur récepteur doit être inférieur à 20 mètres..Ce parabolo?de sera orientable vers l’émetteur de l’engin par un procédé analogue à celui utilisé généralement dans les radars. Le calcul de la liaison faite dans ces conditions, montre la possibilité de communiquer à un million de kilo

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,Space Law—The Development of Jurisdictional Concepts,is the so-called “. Primary Jurisdiction Line” where the conditions for accomplishing aerial flight end. He deplores the use of the London Disarmament Conference (1957) as the forum for the first international consideration of the question of space law jurisdiction. This important question should be

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Gravitational and Related Constants for Accurate Space Navigation,hat are alternative to those used in the foregoing determinations are compared with them in the appendix..The moon’s parallax, as an alternate source of .., is shown to be inferior to ... A new value of the dynamical parallax is ascertained to be .. Other possible sources are considered; the effects

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Bj?rn Bergqvisty work on sociological institutionalism emerged. Even though the facts that CSDP is intergovernmentally constructed and that the member states remain the main actors in this policy field are not contested, the chapter highlights the extent to which rationalist approaches are unable to capture the fu