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Unlike the Tallboy, the Grand Slam was designed to penetrate concrete roofs and was more effective against fortifications than earlier bombs. [55] By the end of the war, 41 Grand Slams had been dropped on operations although in 2004, Stephen Flower wrote of 42 bombs, a figure he repeated in his 2013 publication. [56] in 1947 Sir Arthur Harris ...
Tallboy or Bomb, Medium Capacity ... was designed to be able to carry a bomb load that could include a load of two Tallboys internally, or one Grand Slam plus ...
The T-12 was a further development of the concept initiated with the United Kingdom's Tallboy and Grand Slam weapons developed by British aeronautical engineer Barnes Wallis during the Second World War: a hardened, highly aerodynamic bomb of the greatest possible weight designed to be dropped from the highest possible altitude. Penetrating ...
B.I Special loaded with a Grand Slam 32 Aircraft were adapted to take first the super-heavy "Tallboy" and then "Grand Slam" bombs. Up-rated engines with paddle-bladed propellers gave more power, and the removal of gun turrets reduced weight and gave smoother lines. For the Tallboy, the bomb bay doors were bulged; for the Grand Slam, they were ...
Later in the war, Barnes Wallis made bombs based on the "earthquake bomb concept", such as the 6-ton Tallboy and then the 10-ton Grand Slam, although these were never dropped from more than about 25,000 feet (7.6 km). Even from this relatively low altitude, the earthquake bomb had the ability to disrupt German industry while causing minimum ...
Led by 617 Squadron, the Group often engaged in special missions, using new weapons, such as Barnes Wallis's bouncing bombs, and two type of "earthquake bomb": Tallboy and Grand Slam. 1939 – 1945. From 11 September 1939 until 22 November 1940, Air Vice Marshal (AVM) Arthur Harris was in charge.
Bombs tested included the Tallboy and the Grand Slam (both British and US-made versions), the American 22,000-pound (10,000 kg) Amazon and 2,000-pound (910 kg) M103 SAP bombs, and the Disney. The bombs dropped on Valentin were inert, as the objective was not to observe the effects of bomb explosions, but rather to test concrete penetration and ...
The inventor of the first such bomb was the British engineer Barnes Wallis, whose "Upkeep" bouncing bomb was used in the RAF's Operation Chastise of May 1943 to bounce into German dams and explode underwater, with an effect similar to the underground detonation of the later Grand Slam and Tallboy earthquake bombs, both of which he also invented.