The B57 nuclear bomb was a low-yield tactical nuclear weapon used by the United States during the Cold War. The mushroom cloud of the atomic bombing of Nagasaki, Japan, in 1945 lifted nuclear fallout some 18 km (60,000 feet) above the epicenter. ... Jump to: navigation, search The mushroom cloud of the atomic bombing of Nagasaki, Japan, 1945, rose some 18 km (11 mi) above the hypocenter. ... Jump to: navigation, search For the generic term for a high-tension struggle between countries, see cold war (war). ...

Entering production in 1963 as the Mk 57, the bomb was designed for carriage by high-speed tactical aircraft. It had a streamlined casing capable of withstanding supersonic flight speeds. It was 3 m (9 ft 10 in) long, with a diameter of about 37.5 cm (14.75 in). Basic weight was about 227 kg (500 lb). Jump to: navigation, search 1963 was a common year starting on Tuesday (link will take you to calendar). ...

Some versions of the B57 were equipped with a parachute retarder (a 3.8 m/12.5 ft diameter nylon/Kevlar chute) to slow the weapon in its descent, giving the aircraft a chance to escape the blast (or to allow the weapon to survive impact with the ground in laydown mode) at altitudes as low as 15 m (50 ft). Various fusing modes were available, including a hydrostatic fuse for use as a depth charge for anti-submarine use. Jump to: navigation, search Kevlar (poly-paraphenylene terephthalamide) is the DuPont Company’s brand name for a synthetic material constructed of para-aramid fibers that the company claims is five times stronger than the same weight of steel, while being lightweight, flexible and comfortable. ... Laydown delivery is a mode of deploying a free-fall nuclear weapon in which the bombs fall is slowed by parachute so that it actually lands on the ground before detonating. ... Hydrostatic pressure is the pressure exerted by a fluid due to its weight. ... Depth Charge used by U.S. Navy later in World War II The depth charge is the oldest anti-submarine weapon. ... Jump to: navigation, search Royal Navy Vanguard class submarine USS Los Angeles A submarine is a specialized watercraft that can operate underwater. ...

The B57 was produced in six versions (mods) with explosive yields ranging from 5 to 20 kilotons. Mod 0 was 5 kT, Mod 1 and Mod 2 were 10 kT, Mod 3 and Mod 4 were 15 KT, and Mod 5 was 20 kT. The depth bomb version for the US Navy was 10 kT. A megaton or megatonne is a unit of mass equal to 1,000,000 metric tons, i. ... The United States Navy (USN) is the branch of the United States armed forces responsible for naval operations. ...

The B57 was produced from 1963 to 1967. After 1968 the weapon became known as B57 rather than Mk 57. 3,100 weapons were built, the last of which was retired in June 1993. Jump to: navigation, search 1963 was a common year starting on Tuesday (link will take you to calendar). ... Jump to: navigation, search 1967 was a common year starting on Sunday of the Gregorian calendar. ... Jump to: navigation, search 1968 (MCMLXVIII) was a leap year starting on Monday (the link is to a full 1968 calendar). ... Jump to: navigation, search 1993 (MCMXCIII) is a common year starting on Friday of the Gregorian calendar and marked the Beginning of the International Decade to Combat Racism and Racial Discrimination (1993-2003). ...

The B57 could be deployed by most U.S. fighter, bomber and Navy Patrol aircraft (P-3 Orion), or by some US Navy helicopters. A fighter aircraft is a military aircraft designed primarily for attacking other aircraft, as opposed to a bomber, which is designed to attack ground targets, primarily by dropping bombs. ... Jump to: navigation, search A bomber is a military aircraft designed to attack ground targets, primarily by dropping bombs. ... Jump to: navigation, search P-3 Orion The Lockheed P-3 Orion is a patrol aircraft of the United States military used primarily for anti-submarine warfare. ... The United States Navy (USN) is the branch of the United States armed forces responsible for naval operations. ... Jump to: navigation, search The Bell 206 of Canadian Helicopters they are very fun Robinson Helicopter Company (USA) R44, a four seat development of the R22 A helicopter is an aircraft which is lifted and propelled by one or more horizontal rotors (propellers). ...