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RDS-6s (Russian: РДС-6с, from the Soviet codename for their atomic bombs Russian: Реактивный Двигатель Специальный, lit. 'special jet engine'; American codename: Joe 4) was the first Soviet attempted test of a thermonuclear weapon that occurred on August 12, 1953, that detonated with an energy equivalent to 400 kilotons of TNT.
The initial explosion catapulted the 740-ton silo door away from the silo and ejected the second stage and warhead. Once clear of the silo, the second stage exploded. The W53 thermonuclear warhead landed about 100 feet (30 m) from the launch complex's entry gate. Its safety features prevented any loss of radioactive material or nuclear detonation.
Nuclear bomb damaged in crash [34] During a simulated takeoff, a wheel casting failure caused the tail of a USAF B-47 carrying a Mark 36 Mod 1 nuclear bomb to hit the runway, rupturing a fuel tank and sparking a fire which burned for some 7 hours. [35] The weapon used in-flight insertion and the weapon was in its retracted, unarmed state. [36]
The operation consisted of 29 explosions, of which only two did not produce any nuclear yield.Twenty-one laboratories and government agencies were involved. While most Operation Plumbbob tests contributed to the development of warheads for intercontinental and intermediate range missiles, they also tested air defense and anti-submarine warheads with smaller yields.
Sometime after midnight on 14 February 1950, a Convair B-36B, United States Air Force Serial Number 44-92075 assigned to the US 7th Bombardment Wing, Heavy at Carswell Air Force Base in Texas, crashed in northwestern British Columbia on Mount Kologet after jettisoning a Mark 4 nuclear bomb. [1] This was the first such nuclear weapon loss in ...
The recovered thermonuclear bomb displayed on the fantail of the submarine rescue ship USS Petrel after it was located by DSV Alvin and recovered by CURV-I, pictured, at a depth of 2,500 feet (760 m) Alvin located the bomb again on 2 April, this time at a depth of 2,900 feet (880 m). [ 15 ]
In October 2018, the Mod 12 guided tail-kit assembly received Milestone C approval to enter the production phase; the TKA went through the traditional test program in under 11 months, achieving a 100% success rate for all 31 bomb drops. [57] The B61-12 nuclear bomb completed its successful flight tests with the US Air Force's F-15E in June 2020.
A second set of tests was scheduled, with testing recommencing in September 1957. The first test was based on a "… new simpler design. A two-stage thermonuclear bomb that had a much more powerful trigger". This test Grapple X Round C was exploded on 8 November and yielded approximately 1.8 Mt (7.5 PJ).