Gub-57a / B: the giant of bomb industry -- the giant earth penetrating bomb

 Gub-57a / B: the giant of bomb industry -- the giant earth penetrating bomb

It is 6.2m long, 0.8m in diameter, 13600kg in weight and 2300kg in weight. The shell of its warhead is made of nickel drill steel alloy, and its attack accuracy is within 1.2 meters. It can be used to destroy large underground targets. As the Big Mac in the bomb, its high-strength alloy shell is filled with more than two tons of high explosive, which makes it capable of destroying the fortress 60 meters deep underground. The explosive power is more than 10 times that of the largest ground penetrating bomb in active service, comparable to small nuclear weapons, and the title of the father of bombs is worthy of the name.

R & D process

The growth history of giant earth penetrating bombs dates back to the Iraq war in 2003. In order to meet the operational needs of the U.S. Army, the U.S. has finalized the plan to develop giant earth penetrating bombs.

On November 1, 2004, the U.S. Department of Defense announced that the air force research laboratory at ingrain air force base had signed a contract with Boeing for the development of giant earth penetrating bombs. The research project is divided into three phases. In May 2005, Boeing successfully completed the first phase of the giant earth penetrating missile technology demonstration. In the second stage, from June 2005, the static test of the ground, the anti damage effect test of the load and the demonstration of the explosion power of hitting the actual tunnel target are carried out. On March 14, 2007, in the weapon tunnel facility of Baisha missile range, the giant earth penetrating projectile successfully completed the static tunnel power test. Before the test, the staff placed the bomb in the predetermined position in the test tunnel in advance, and then remotely detonated it to test the explosion effect and collect the test data. This phase ended in November 2007. So far, the research and development of the giant earth penetrator is basically finished, and the technical outline is basically determined. The third stage starts from December 2007 and lasts until July 2008. In this stage, we carried out the mount test, flight and delivery test of the giant earth penetrating bombs on B-52 and B-2 stealth bombers.

In 2011, Jack Miller, a spokesman for the U.S. air force, said the air force had signed an order with Boeing for a total of $32 million on August 2 to purchase eight heavy earth penetrating bombs from Boeing. In September, the U.S. Air Force began to receive them.