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The bomb was originally called Tallboy Large until the term Tallboy got into the press and the code name was replaced by "Grand Slam". The bomb was similar to a large version of the Tallboy bomb but a new design and closer to the size that its inventor, Barnes Wallis, had envisaged when he developed the idea of an earthquake bomb. It was the ...
14 March: A railway viaduct at Bielefeld is destroyed by the first Grand Slam bomb to be dropped in combat by an Avro Lancaster. The attack by No. 617 Squadron RAF succeeds after 54 attacks using smaller bombs had failed. [47] 17 March: Adolf Hitler orders the SS to fire V-2 rockets at the Ludendorff Bridge during the Battle of Remagen. All 11 ...
The viaducts were attacked by 617 and 9 squadrons with Tallboys and the first Grand Slams. The Arnsberg viaduct withstood the attack but 100 m (330 ft) of the Bielefeld viaduct collapsed through the 'earthquake effect' of the Grand Slams and Tallboys. [33] 15 March 1945 – Arnsberg viaduct Arnsberg viaduct was attacked again by 9 Squadron.
The 9th Bomb Squadron is a squadron of the United States Air Force. It is assigned to the 7th Operations Group , Global Strike Command , stationed at Dyess Air Force Base , Texas. The squadron is equipped with the Rockwell B-1B Lancer bomber.
[4] [3] The new bomber also possessed an enlarged fuselage that accommodated increased fuel and bomb loads and allowed up to 11 tons of various armaments and equipment fittings including the Grand Slam bomb to be carried. It had a higher operational ceiling and longer range than its Lancaster predecessor, being capable of a maximum altitude of ...
The squadron went on to drop the Tallboy and Grand Slam bombs and attacked the German battleship Tirpitz, using an advanced bomb sight, which enabled the bombing of small targets with far greater accuracy than conventional bomb aiming techniques.
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.
Nearly 50 years later, No. 617 Squadron transferred to Lossiemouth and was based there between 1993 and 2014. During that time examples of the Tallboy, Grand Slam and Up Keep (bouncing bomb) were on display within the squadron site. [17]