This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. View more global usage of this file. From Wikimedia Commons, the free media repository. File information. Structured data. Captions English Add a one-line explanation of what this file represents. Hundreds of high ranking Armed Forces officers and members of Congress are present. The fireball ascending. Deutsch: Operation Upshot-Knothole - Grable
Operation Upshot—Knothole was a series of eleven nuclear test shots conducted in at the Nevada Test Site. It followed Operation Ivy and preceded Operation Castle. Over 21, soldiers took part in the ground exercise Desert Rock V in conjunction with the Grable shot. From Wikipedia, the free encyclopedia. See also: List of nuclear weapons tests of the United States. The Grable test, with the Atomic Annie artillery piece used to fire the warhead. Play media. Word translations into English in parentheses unless the name is a proper noun.
The codename Grable was chosen because the letter Grable is phonetic for G, as in "gun", since the warhead was a gun-type fission weapon. As a shell, or artillery-fired atomic projectile AFAP , the device was the first of its kind. The test remains the only nuclear artillery shell ever actually fired in the U. Grable was the second of only four gun-type warheads ever detonated the first was Little Boy , the weapon used against Hiroshima , the last two were test firings of the W33 ; all other atomic weapons were implosion-type weapons. The shell, designated a Mark 9 nuclear weapon, had a diameter of mm The detonation of Grable occurred 19 seconds after its firing.
Through the fifties, every year or every other year if a pacific test series intervened a series of several shots was fired at the NPG over a period of three or four months to address a wide variety of objectives. Upshot-Knothole was just such a scatter-shot effort. Technical information to assist in weapon design was obtained in several tests. Efforts to prepare the U.