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THE MOST POWERFUL BOMB EVER CONSTRUCTED

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The Most Powerful Bomb Ever Constructed • Damn Interesting



On October 30, 1961, the most powerful weapon ever constructed by mankind was exploded over the island of Novaya Zemlya in the Arctic Sea. The device was code-named "Ivan," and it was a multi-stage hydrogen bomb which was built in only fifteen weeks by engineers in the USSR, using off-the-shelf nuclear weapon components.

It was intended as a display of Soviet superiority during a period of grave tension between the USSR and the United States. The Russians had erected the Berlin wall only two months earlier, and they had just ended a shaky, three-year moratorium on atmospheric nuclear weapons testing. Before Ivan, the largest explosion the world had seen was an incredible 15 megatons, an event which caused a mushroom cloud five kilometers across. Ivan's explosion was over three times more powerful, despite the fact that the device was deliberately prevented from operating to its full potential.

The completed weapon weighed 27 metric tons, and though it was technically "aircraft-deliverable," it was too large to fit inside the bomb bay of the largest soviet bomber of that era, the Tu-95. Consequently, a Tu-95 was specially modified for the task, including the removal of the bomb bay doors to allow the bomb to protrude from the plane, and a coating of a special reflective paint to minimize the heat damage it would sustain from the fireball. Ivan was also attached to a parachute to prevent it from descending too rapidly, thereby giving the bomber adequate time to get out of range of the blast.



Because the project had been rushed, much of the mathematical analysis was skipped, and estimations were used instead. This led to uncertainties about the system performance, and last-minute design modifications. Doubts and uncertainties notwithstanding, on October 30, 1961 the Tu-95 dropped Ivan from an altitude of 34,500 feet over the Mityushikha Bay Nuclear Testing Range at Novaya Zemlya. The weapon's on-board barometric sensors detonated the bomb at approximately 13,000 feet at 11:32am.

Despite the cloudy weather, the flash of light was visible as far as 1,000 kilometers distant, though the sound of the blast would not reach that far for forty-nine minutes, in the form of an indistinct, heavy blow. The giant fireball reached from ground-level to about 34,000 feet into the air, violently releasing 3800 times more explosive energy than the Hiroshima bomb-- equivalent to fifty million metric tons of TNT. One hundred kilometers from ground zero the heat would have inflicted third degree burns. Atmospheric focusing produced areas of destruction hundreds of kilometers from ground zero, including wooden structures which were completely destroyed, and some shattered windows in Finland. The explosion's atmospheric shockwave traveled around the Earth three times before it dissipated.

The mushroom cloud which followed the blast was enormous in scale. It stretched sixty kilometers into the sky, and had a diameter of about forty kilometers. Ionization from the explosion disrupted radio communications for the better part of an hour.



Some time after the explosion, a team was dispatched to ground zero to take photographs. One witness reported: "The ground surface of the island has been levelled, swept and licked so that it looks like a skating rink. The same goes for rocks. The snow has melted and their sides and edges are shiny. There is not a trace of unevenness in the ground... Everything in this area has been swept clean, scoured, melted and blown away." Analysis of the explosion showed that the area of complete destruction had a radius of twenty-five kilometers from ground zero.

Naturally, the United States was outraged, and responded by rattling its nuclear sabre in return. The U.S. soon followed suit with an extensive series of nuclear weapons tests.

Ivan-- sometimes referred to as "Tsar Bomba" or "King of Bombs"-- was originally designed to yield a 100 megaton explosion, but the soviets decided that such a blast would create too great a risk of nuclear fallout, and an almost certain chance that the release plane would be unable to reach safety before detonation. Prior to testing, the engineers replaced a portion of the radioactive uranium with a lead tamper, cutting its explosive potential in half, to a "mere" 50 megatons. Later analysis showed that the fallout from a 100 megaton detonation would have resulted in lethal levels of radioactive fallout over an enormous area.

Even at half strength, Ivan was so powerful that it was completely impractical. Much of the explosion's energy radiated upwards into space, and that which didn't was so excessive that using the device on any populated targets world would have resulted in adverse effects on Russian interests. It served as nothing more than a show of force, and in that respect, it served its purpose well. Thankfully, no other weapon with the massive destructive power of Tsar Bomba has ever been built.



Written by Alan Bellows, posted on 13 January 2006. Alan is the founder/designer/head writer/managing editor of Damn Interesting.
 
Tsar Bomba - Wikipedia, the free encyclopedia

Tsar Bomba (Russian: Царь-бомба; "Tsar Bomb") is the nickname for the AN602 hydrogen bomb, the most powerful nuclear weapon ever detonated. Its October 30, 1961, test remains the most powerful artificial explosion in human history. It was also referred to as Kuz'kina Mat' (Russian: Кузькина мать, Kuzka's mother),[1] referring to Nikita Khrushchev's promise to show the United States a "Kuz'kina Mat'" at the 1960 United Nations General Assembly. The famous Russian idiom, which has been problematic for translators, literally meaning “to show somebody Kuzka's mother”, equates roughly with the English “We’ll show you!” Developed by the Soviet Union, the bomb had the yield of 50 to 58 megatons of TNT (210 to 240 PJ). Only one bomb of this type was ever officially built and it was tested on October 30, 1961, in the Novaya Zemlya archipelago, at Sukhoy Nos.[2][3][4]

The remaining bomb casings are located at the Russian Atomic Weapon Museum, Sarov (Arzamas-16), and the Museum of Nuclear Weapons, All-Russian Research Institute of Technical Physics, Snezhinsk (Chelyabinsk-70). Neither of these casings has the same antenna configuration as the device that was tested.

Many names are attributed to the Tsar Bomba in the literature: Project 7000; product code 202 (Izdeliye 202); article designations RDS-220 (РДС-220), RDS-202 (РДС-202), RN202 (PH202), AN602 (AH602); codename Vanya; nicknames Big Ivan, Tsar Bomba, Kuz'kina Mat'. The term "Tsar Bomba" was coined in an analogy with two other massive Russian objects: the Tsar Kolokol (Tsar Bell) and the Tsar Pushka (Tsar Cannon). The CIA denoted the test as "JOE 111".[4]


A Tsar Bomba-type casing on display at Sarov
The Tsar Bomba was a three-stage Teller–Ulam design hydrogen bomb with a yield of 50 to 58 megatons of TNT (210 to 240 PJ).[5] This is equivalent to about 1,350–1,570 times the combined power of the bombs that destroyed Hiroshima and Nagasaki,[6] 10 times the combined power of all the conventional explosives used in World War II, or one quarter of the estimated yield of the 1883 eruption of Krakatoa, and 10% of the combined yield of all nuclear tests to date. A three-stage H-bomb uses a fission bomb primary to compress a thermonuclear secondary, as in most H-bombs, and then uses energy from the resulting explosion to compress a much larger additional thermonuclear stage. There is evidence that the Tsar Bomba had several third stages rather than a single very large one.[7]

The initial three-stage design was capable of yielding approximately 100 Mt, but it would have caused too much radioactive fallout. To limit fallout, the third stage and possibly the second stage had a lead tamper instead of a uranium-238 fusion tamper (which greatly amplifies the reaction by fissioning uranium atoms with fast neutrons from the fusion reaction). This eliminated fast fission by the fusion-stage neutrons, so that approximately 97% of the total energy resulted from fusion alone (as such, it was one of the "cleanest" nuclear bombs ever created, generating a very low amount of fallout relative to its yield). There was a strong incentive for this modification since most of the fallout from a test of the bomb would have ended up on populated Soviet territory.[7][8]

The components were designed by a team of physicists headed by Academician Yulii Borisovich Khariton and including Andrei Sakharov, Victor Adamsky, Yuri Babayev, Yuri Smirnov, and Yuri Trutnev. Shortly after the Tsar Bomba was detonated, Sakharov began speaking out against nuclear weapons, which culminated in his becoming a dissident.[2][8]

Test[edit]

The Tsar Bomba was flown to its test site by a specially modified Tu-95V release plane, flown by Major Andrei Durnovtsev. Taking off from an airfield in the Kola Peninsula, the release plane was accompanied by a Tu-16 observer plane that took air samples and filmed the test. Both aircraft were painted with a special reflective white paint to limit heat damage.

The bomb, weighing 27 metric tons, was so large (8 metres (26 ft) long by 2 metres (6.6 ft) in diameter) that the Tu-95V had to have its bomb bay doors and fuselage fuel tanks removed. The bomb was attached to an 800 kilogram parachute, which gave the release and observer planes time to fly about 45 kilometres (28 mi) away from ground zero. When detonation occurred, the Tu-95V fell one kilometer from its previous altitude due to the shock wave of the bomb.





The Tsar Bomba's fireball, about 8 kilometres (5.0 mi) in diameter, was prevented from touching the ground by the shock wave, but nearly reached the 10.5 kilometres (6.5 mi) altitude of the deploying Tu-95 bomber.
The Tsar Bomba detonated at 11:32 (Moscow time) on October 30, 1961, over the Mityushikha Bay nuclear testing range (Sukhoy Nos Zone C), north of the Arctic Circle over the Novaya Zemlya archipelago in the Arctic Sea. The bomb was dropped from an altitude of 10.5 kilometres (6.5 mi); it was designed to detonate at a height of 4 kilometres (2.5 mi) over the land surface (4.2 kilometres (2.6 mi) over sea level) by barometric sensors.[2][7][8]

The original, November 1961 A.E.C. estimate of the yield was 55–60 Mt, but since 1991 all Russian sources have stated its yield as 50 Mt. Khrushchev warned in a filmed speech to the Supreme Soviet of the existence of a 100 Mt bomb (technically the design was capable of this yield). Although simplistic fireball calculations predicted the fireball would impact the ground, the bomb's own shock wave reflected back and prevented this.[9] The fireball reached nearly as high as the altitude of the release plane and was visible at almost 1,000 kilometres (620 mi) away from where it ascended. The subsequent mushroom cloud was about 64 kilometres (40 mi) high (over seven times the height of Mount Everest), which meant that the cloud was above the stratosphere and well inside the mesosphere when it peaked. The base of the cloud was 40 kilometres (25 mi) wide. All buildings in the village of Severny (both wooden and brick), located 55 kilometres (34 mi) from ground zero within the Sukhoy Nos test range, were destroyed. In districts hundreds of kilometers from ground zero wooden houses were destroyed, stone ones lost their roofs, windows and doors; and radio communications were interrupted for almost one hour. One participant in the test saw a bright flash through dark goggles and felt the effects of a thermal pulse even at a distance of 270 kilometres (170 mi). The heat from the explosion could have caused third-degree burns 100 km (62 mi) away from ground zero. A shock wave was observed in the air at Dikson settlement 700 kilometres (430 mi) away; windowpanes were partially broken to distances of 900 kilometres (560 mi).[10] Atmospheric focusing caused blast damage at even greater distances, breaking windows in Norway and Finland. The seismic shock[verification needed] created by the detonation was measurable even on its third passage around the Earth.[11] Its seismic body wave magnitude was about 5 to 5.25.[9] The energy yield was around 8.1 on the Richter scale but, since the bomb was detonated in air rather than underground, most of the energy was not converted to seismic waves. The TNT equivalent of the 50 Mt test could be represented by a cube of TNT 312 metres (1023 feet) on a side, approximately the height of the Eiffel Tower.

Analysis[edit]

The Tsar Bomba is the single most physically powerful device ever used by mankind.[12] By contrast, the largest weapon ever produced by the United States, the now-decommissioned B41, had a predicted maximum yield of 25 Mt, and the largest nuclear device ever tested by the United States (Castle Bravo) yielded 15 Mt (this was due to an unexpected runaway lithium-7 reaction; the design yield was approximately 5 Mt). The largest weapons deployed by the Soviet Union were also around 25 Mt, as in the SS-18 Mod. 2 ICBM warheads.

The weight and size of the Tsar Bomba limited the range and speed of the specially modified bomber carrying it and ruled out its delivery by an ICBM. Much of its high-yield destructiveness was inefficiently radiated upwards into space. It has been estimated that detonating the original 100 Mt design would have released fallout amounting to about 25 percent of all fallout emitted since the invention of nuclear weapons.[13] Hence, the Tsar Bomba was an impractically powerful weapon. It was decided that a full 100 Mt detonation would create too great a risk of nuclear fallout, as well as a near certainty that the release plane (and crew) would be destroyed before it could escape the blast radius.[14]

The Tsar Bomba was the culmination of a series of high-yield thermonuclear weapons designed by the Soviet Union and the United States during the 1950s (examples include the Mark-17[15] and B41). Such bombs were designed because:
The nuclear bombs of the day were large and heavy, regardless of yield, and could only be delivered by strategic bombers. Hence yield was subject to dramatic economies of scale;
It was feared that many bombers would fail to reach their targets because their size and low speed made detection and interception easy. Hence maximizing the firepower carried by any single bomber was considered vital;
Before satellite intelligence each side lacked precise knowledge of the location of the other's military and industrial facilities;
A bomb dropped without benefit of advanced inertial navigation systems could easily miss its intended target. Parachute retardation would only worsen the bomb's accuracy.

Thus certain bombs were designed to destroy an entire large city even if dropped five to ten kilometers from its center. This objective meant that yield and effectiveness were positively correlated, at least up to a point. However, the advent of ICBMs accurate to 500 meters or better made such yields unnecessary. Subsequent nuclear weapon design in the 1960s and 1970s focused primarily on increased accuracy, miniaturization, and safety. The standard practice for many years has been to employ multiple smaller warheads (MIRVs) to "carpet" an area, resulting in greater ground damage. With the nuclear bomb being so powerful at 100 megatons more of the explosion went upwards instead of outwards to affect more of that designated area, instead radiation would be sent into the atmosphere and in turn affect the country that originally launched the bomb.

Films[edit]


Zone of total destruction of the Tsar Bomba (as an example – over a map of Paris): red circle = total destruction (radius 35 kilometres (22 mi)), yellow circle = fireball (radius 3.5 kilometres (2.2 mi)).Footage from a Soviet documentary about the bomb is featured in Trinity and Beyond: The Atomic Bomb Movie (Visual Concept Entertainment, 1995), where it is referred to as the Russian monster bomb.[16] The movie states that the Tsar Bomba project broke the voluntary moratorium on nuclear tests. In fact Soviets restarted their tests and broke the unilateral voluntary moratorium two months before Tsar Bomba, and since the moratorium was unilateral there was no multilateral legal obstacle (earlier the U.S. also declared a one year unilateral moratorium on nuclear tests and as that year expired the US had already announced that it considered itself free to resume testing without further notice but had not resumed tests until the aftermath of Tsar Bomba).[17]
A one hour episode of the PBS documentary series Secrets of the Dead – "World's Biggest Bomb" (2011; Blink Films & WNET) – chronicles the events leading to the detonations of Castle Bravo and the Tsar Bomba, which is viewable online (not in all countries due to copyright).
 
One day the mankind will be destroyed by their own weapons which were made for their security.


The precise reason. why I posted this article and video !

It is a grave reminder of dangers lurking around ....

One day the mankind will be destroyed by their own weapons which were made for their security.

US , Russia have been through this stupid ...arms race !

Now Russia needs assistance to dismantle this exorbitant nuclear arsenal ....


There are precious lessons to be learnt from history of mankind ...


Hope India and Pakistan and other such countries learn this lesson before it is too late ....
 
^^^ It wasn't Russia ..... the country which this bomb was intended to protect was USSR.

And the bomb could not save its demise.
 
The precise reason. why I posted this article and video !

It is a grave reminder of dangers lurking around ....



US , Russia have been through this stupid ...arms race !

Now Russia needs assistance to dismantle this exorbitant nuclear arsenal ....


There are precious lessons to be learnt from history of mankind ...


Hope India and Pakistan and other such countries learn this lesson before it is too late ....

The world lives on hope. Let's hope no one gets into nuclear war.
 
If you do not like nuclear weapons - why would you, India and Pakistan, have done and continue to do it?
 
If you do not like nuclear weapons - why would you, India and Pakistan, have done and continue to do it?

Don't know about India but we did so India will think thrice time before attacking Pakistan. That's all
 
If you do not like nuclear weapons - why would you, India and Pakistan, have done and continue to do it?

Sometimes we have to do things even if you don't like it ....

India conducted first nuclear test in 1974 ....but did not weaponise till very recently ....

India was forced to weaponise due to Chinese threat ...

Similarly Pakistan was forced to weaponise due to Indian threat ...

Our nuclear weapons are strictly for deterrence purpose ...and so I guess is case about China's or Pakistan's ...

USSR is to be blamed for proliferation of nukes to China ....China in turn to be blamed for nuclear proliferation to Pakistan ....and Pakistan in turn to be blamed for Nukes that North korea possesses ....

I hope nuclear weapons will never be used ....
 
You see, you have developed nuclear weapons to defend yourself. Similarly done and the USSR. But the USSR defended itself against the most dangerous country in the world. From a country that never ceases to make wars. Therefore, the weapon had to be worthy to this threat.
 
So we can blame US for all this ****.

This is not question who to blame for what ....

we can't undo past ...

But we can conduct ourselves well by taking lessons from past ...


All I am saying that despite building and testing "The Biggest Bomb In World till date " it took USSR nowhere ...

so this race to build more nukes ....more powerful nukes ....bigger nukes ....must stop !
 

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