Reply to post: Grand Slam

Bombing raids during WWII sent out shockwaves powerful enough to alter the Earth's ionosphere

Stoneshop Silver badge

Grand Slam

"The bombs carried by the Allied Forces’ planes were four times heavier than the ones carried by Germany’s Luftwaffe. One in particular, the Grand Slam bomb carried by the RAF, was a whopping 10,000 kilograms, and was nicknamed the “Ten Ton Tess.”"

This suggests that Grand Slams were commonly used in bombing raids, but only a hundred or so were made of which 42 were actually dropped in raids against particular hardened targets. Its predecessor, the Tallboy, got up to 850; it too was mainly used against particular 'hard' targets, among them the battleship Tirpitz, U-boat docks and railway bridges and tunnels. Both had the weight and strength to penetrate reinforced concrete bunker domes, or penetrate the ground next to a target and explode underneath it, wrecking the foundations.

The 4000 to 12000 lb HC "blockbuster" bombs were the ones that were often used in bombing raids, and in numbers totalling about 90.000 (nearly all of that being the 4000 lb type). These were used for their blast wave effect where the Tallboy and Grand Slam were considered 'earthquake' bombs.

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