The Bomb, Medium Capacity, 22,000 lb (Grand Slam) was a 22,000 lb (10,000 kg) earthquake bomb used by RAF Bomber Command against German targets towards the end of the Second World War. The bomb was originally called Tallboy Large until the term Tallboy got into the press and the code name was replaced by "Grand Slam".

On 13 March 1945 the largest bomb ever dropped by British forces, during WWII, was first tested ‘live’ in the New Forest at Ashley Walk Bombing Range. The Grand Slam was a 22,000-lb MC high explosive deep-penetration bomb designed by Barns Wallis following on from his creation of the smaller Tallboy (a 12,000-lb MC deep-penetration bomb).

On March 14, 1945, a British Lancaster heavy bomber dropped a bomb known as the “Grand Slam,” a 22,000 lb behemoth that was the largest and most powerful bomb ever used up to that time. For years, only a nuclear bomb would be more powerful.

Oct 10, 2023 · The Grand Slam bomb, developed by Britain during World War II, is one of the largest conventional bombs ever used in combat, designed to break the sound barrier on its way to the ground and punch through meters of concrete and soil.

The Grand Slam was a 22,000 lb (10,000 kg) earthquake bomb used by RAF Bomber Command against strategic targets during the Second World War. Known officially as the Bomb, Medium Capacity, 22,000 lb, it was a scaled-up version of the Tallboy bomb and closer to the original size that the bombs...

Mar 17, 2023 · Two earthquake bombs eventually went into production late in the war: the 12,000-pound Tallboy in 1944 and the 22,000-pound Grand Slam the following year. Modified four-engine Avro Lancasters were the only airplanes powerful enough to carry the weapons, the largest conventional bombs of World War II.

In one raid on 27 March 1945, against the U-Bootbunkerwerft "Valentin" submarine pens near Bremen, 2 Grand Slams penetrated 7 meters (23 feet) of reinforced concrete, bringing down the roof. In...

The 'Grand Slam' was the heaviest bomb developed by any nation in WW2. It was the brainchild of Barnes Wallis (of Dambusters fame) and was designed to be dropped from great altitude. The theory was that instead of relying on a direct hit, a near miss by such a weapon would produce a subterannian pressure wave that would shake a target to pieces.

Jun 8, 2015 · The Grand Slam was a 22,000 lb. bomb designed by Barnes Wallis, the same man who developed the smaller Tallboy bomb. An ‘earthquake bomb,’ its designed purpose was to hit the ground and go as far down without exploding, only to detonate underground, creating an earthquake effect.

The Grand Slam carried slightly less than twice the explosive material as Tallboy but is said to have been five times as powerful. Grand Slam was by far the most powerful, non-atomic bomb used during the Second World War. 617 was the only squadron to deliver the Grand Slam.