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The Koon shot of Operation Castle was a test of a thermonuclear device designed at the University of California Radiation Laboratory (UCRL), now Lawrence Livermore National Laboratory (LLNL). The "dry" two-stage device was known as "Morgenstern", and had a highly innovative secondary stage. It was tested on April 7, 1954. The predicted yield was between 0.33 and 3.5 megatons, with an expected yield of 1 megaton. The actual yield was 110 kilotons. Morgenstern was thus a fizzle.

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  • Castle Koon (en)
  • قلعة كون (ar)
  • Castle Koon (es)
  • Castle Koon (pt)
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  • قلعة كون هي بمثابة اختبار لمختبر جامعة كاليفورنيا للإشعاع الذي أصبح اسمه الآن لمختبر لورانس ليفرمور الوطني والذي صمملإنتاج جهاز نووي حراري. (ar)
  • Castle Koon foi uma bomba termonuclear dos Estados Unidos da América. Apresentava um design inovador, que elevaria a potência. As previsões variavam de 0,33 megatons a 3,5 megatons, com rendimento real de 110 quiloton, sendo que 100 kt vieram do primário e cerca de 10 kt a partir da fusão. O teste foi considerado um fiasco termonuclear: o defeito estava no aquecimento prematuro do núcleo secundário pelo fluxo de nêutrons do núcleo primário. (pt)
  • The Koon shot of Operation Castle was a test of a thermonuclear device designed at the University of California Radiation Laboratory (UCRL), now Lawrence Livermore National Laboratory (LLNL). The "dry" two-stage device was known as "Morgenstern", and had a highly innovative secondary stage. It was tested on April 7, 1954. The predicted yield was between 0.33 and 3.5 megatons, with an expected yield of 1 megaton. The actual yield was 110 kilotons. Morgenstern was thus a fizzle. (en)
  • La toma Koon de Operación Castle fue una prueba de un dispositivo termonuclear diseñado en el Universidad de California (UCRL) ahora Laboratorio Nacional Lawrence Livermore (LLNL). El dispositivo "Dry" de dos etapas bomba nuclear Mark 22 se conocía como "Morgenstern", y tenía una etapa secundaria muy innovadora. Fue probado el 7 de abril de 1954. El rendimiento previsto fue de entre 0,33 y 3,5 megatones, con un rendimiento esperado de 1 megatón. El rendimiento real fue de 110 kilotones. Morgenstern era, por tanto, un Fizzle. (es)
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  • Castle Koon (en)
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  • United States (en)
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  • قلعة كون هي بمثابة اختبار لمختبر جامعة كاليفورنيا للإشعاع الذي أصبح اسمه الآن لمختبر لورانس ليفرمور الوطني والذي صمملإنتاج جهاز نووي حراري. (ar)
  • The Koon shot of Operation Castle was a test of a thermonuclear device designed at the University of California Radiation Laboratory (UCRL), now Lawrence Livermore National Laboratory (LLNL). The "dry" two-stage device was known as "Morgenstern", and had a highly innovative secondary stage. It was tested on April 7, 1954. The predicted yield was between 0.33 and 3.5 megatons, with an expected yield of 1 megaton. The actual yield was 110 kilotons. Morgenstern was thus a fizzle. Post-shot analysis showed that the failure was due to the premature heating of the secondary by the neutron flux of the primary. This was a simple design defect, and not related to the unique geometry of the secondary. The UCRL's other shot, the "wet", i.e., cryogenic, Ramrod device, originally scheduled for the Echo shot, was cancelled because it shared the same design defect. The name "Morgenstern" (German for Morning Star) was chosen because of the shape of the secondary. The secondary consisted of a central sphere from which spikes were radiating, resembling a morning star / mace. The spikes may have been an idea from Teller and colleagues to use implosive jets to compress the thermonuclear core. It was more than two decades before weapons were designed that utilized a secondary concept similar to that first tested in the Koon shot. (en)
  • La toma Koon de Operación Castle fue una prueba de un dispositivo termonuclear diseñado en el Universidad de California (UCRL) ahora Laboratorio Nacional Lawrence Livermore (LLNL). El dispositivo "Dry" de dos etapas bomba nuclear Mark 22 se conocía como "Morgenstern", y tenía una etapa secundaria muy innovadora. Fue probado el 7 de abril de 1954. El rendimiento previsto fue de entre 0,33 y 3,5 megatones, con un rendimiento esperado de 1 megatón. El rendimiento real fue de 110 kilotones. Morgenstern era, por tanto, un Fizzle. El análisis posterior al disparo mostró que la falla se debió al calentamiento prematuro del secundario por el flujo de neutrones del primario. Este fue un simple defecto de diseño y no relacionado con la geometría única del secundario. El otro disparo de la UCRL, el dispositivo Ramrod "húmedo", es decir, criogénico, originalmente programado para el disparo "Echo", se canceló porque compartía el mismo defecto de diseño. Se eligió el nombre "Morgenstern" (estrella de la mañana en alemán) debido a la forma de la secundaria. La secundaria consistía en una esfera central desde la que se irradiaban picos, que se asemejaba a una estrella de la mañana/maza. Los picos pueden haber sido una idea de Teller y sus colegas para utilizar chorros implosivos para comprimir el núcleo termonuclear. Pasarían más de dos décadas antes de que se diseñaran armas que utilizaran un concepto secundario similar al que se probó por primera vez en el disparo de Koon. (es)
  • Castle Koon foi uma bomba termonuclear dos Estados Unidos da América. Apresentava um design inovador, que elevaria a potência. As previsões variavam de 0,33 megatons a 3,5 megatons, com rendimento real de 110 quiloton, sendo que 100 kt vieram do primário e cerca de 10 kt a partir da fusão. O teste foi considerado um fiasco termonuclear: o defeito estava no aquecimento prematuro do núcleo secundário pelo fluxo de nêutrons do núcleo primário. (pt)
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