997 resultados para Mariana, Juan de , S.I., 1536-1624-Comentarios


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Sign. : [A]-Z8, Aa8, Bb3

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Indice

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Relatively short electrodynamic tethers can use solar power to "push" against a planetary magnetic field to achieve propul sion without expenditure of propellant. The groundwork has been laid for this type of propulsion. Recent important milestones include retrieval of a tether in space (TSS-1, 1992), successful deployment of a 20-km-long tether in space (SEDS-1, 1993), and operation of an electrodynamic tether with tether current driven in both directions (PMG, 1993). The planned Propulsive Small Expendable Deployer System (ProSEDS) experiment will use the flight-proven Small Expendable Deployer System (SEDS) to deploy a 5-km bare copper tether from a Delta II upper stage to achieve -0,4 N drag thrust, thus deorbiting the stage, The experiment will use a predominantly "bare" tether for current collection in lieu of the endmass collector and insulated tether approach used on previous missions, Theory and ground-based plasma chamber testing indicate that the bare tether is a highly efficient current collector. The flight experiment is a precursor to utilization of the technology on the International Space tation (JSS) for reboost and the electrodynamic tether pper stage demonstration misión which will be capable of orbit raising, lowering, and inclination changes—all using electrodynamic thrust. In addition, the use of this type of propulsion may be attractive for future missions to Jupiter.

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Sign.: []4, B-C4, D2

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Sign. : [calderón], 2[calderón]4, 3[calderón]6, A-Z4, 2A-2Z4, 3A-3Z4, 4a-4z4, 5A-5D4, 5E2

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Signed: Juan A. Palazuelos.

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Vol. 1: Parte I, Tratado primero, De la providencia de Dios en el repartimiento de los estados, oficios y suertes de vida, que tiene la republica christiana, y de la perfeccion propia de cada uno --Vol. 2: Parte II, Tratado segundo, De la providencia de Dios cerca de las tentaciones contra la perfeccion en todos los estados, y el modo de vencerlas.

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T. 15: Tratado sexto, De la perfecta guarda de los tres votos de pobreza, castiad y obediencia, segun las reglas.

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Mode of access: Internet.

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Mode of access: Internet.