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Barnes Wallis developed a backspin mechanism for the bouncing bomb by attaching a backspin generator to the bomb to stabilize it during its approach towards the target. The backspin created lift and allowed the bomb to skip over the water's surface before reaching its target, increasing the chances of breaching a dam.
What else can I help you with?
What year was the bouncing bomb made?
The bouncing bomb was developed in 1943 during World War II by British engineer Barnes Wallis. It was used in Operation Chastise in May 1943 by the Royal Air Force to disrupt German dams.
Where did they test the bouncing bomb?
The bouncing bomb, designed by Barnes Wallis, was tested at Reculver on the north Kent coast, using a rotating drum apparatus to simulate the bouncing effect on water. The final tests were conducted at Reculver due to its top-secret nature and distance from potential German detection.
How fast did the bouncing bomb have to spin?
The bouncing bomb developed during World War II had to spin at about 500 revolutions per minute (rpm) for optimal performance. This spinning motion helped the bomb to skip across the water and hit its target accurately.
How much did the bouncing bomb cost?
During World War II, each bouncing bomb used by the Royal Air Force (RAF) cost around £1,844 to produce. These bombs were primarily used during the famous Dambusters raid in 1943.
Where did they do practice runs on the bouncing bomb?
Practice runs for the bouncing bomb were done at the Derwent Reservoir in England by the Royal Air Force's 617 Squadron in May 1943. These runs were part of the training exercises in preparation for the famous Operation Chastise against German dams during World War II.
Who created he bouncing bomb?
Barnes Wallis was the inventor of the 'bouncing bomb'.
In which year was the bouncing bomb first used?
The year in which the first bouncing bomb was used was in 1943. The inventor of the bouncing bomb was the British engineer Barnes Wallis.
Where did Barnes Wallis develop the bouncing bomb?
Advanced testing was on the north Kent coast near Herne Bay.
How did Barnes Wallis get the idea to make a bouncing bomb?
He got the idea while 'skipping' flat stones across a lake.
What year was the bouncing bomb made?
The bouncing bomb was developed in 1943 during World War II by British engineer Barnes Wallis. It was used in Operation Chastise in May 1943 by the Royal Air Force to disrupt German dams.
Where did they test the bouncing bomb?
The bouncing bomb, designed by Barnes Wallis, was tested at Reculver on the north Kent coast, using a rotating drum apparatus to simulate the bouncing effect on water. The final tests were conducted at Reculver due to its top-secret nature and distance from potential German detection.
Where did Barnes Wallis get the idea for the bouncing bomb?
Never thought about it before, but I imagine that Wallis was inspired by the pastime of skipping stones across the water, and he expounded on the principle.
Advantages and disadvantages of the bouncing bomb?
vuyhn6dy6
What did the bouncing bomb blow up?
The bouncing bomb blew up the dam in Berlin so that Berlin was under water. This took 4 attempts.
Who invented the Grand Slam bomb?
Dr Barnes Wallis was a brilliant engineer and aircraft designer who designed the Wellington bomber, the dam busting 'bouncing bomb' (a mine), the 12 000-lb Tallboy bomb, and the 22 000-lb Grand Slam bomb. The Tallboy and Grand Slam bombs could only be carried by specially-modified Lancaster bombers.
Why did Barnes Wallace decide to spin the dambusters bomb backwards?
The backspin was used to ensure contact with the dam underwater. If they imparted forward spin on the bomb it would hit the dam and shoot skyward when it hit, just like if you rolled a bicyle tire at the curb, it wants to keep going. Wallace reasoned that in order to get the bomb to counteract the forward velocity of the aircraft, the bomb would have to be spun backwards at a rapid velocity during flight. He also reasoned that would have to calculate (using the drop distance from the dam, the forward velocity of the aircraft, and the elevation of the aircraft), how many bounces the bomb would achieve on the water before reaching the dam, and on each bounce, how much drag the bomb would incur as it scooped through the water on each bounce. Using these specific factors in his calculations, he was able to fix the velocity of backspinning required (almost 600 revolutions per minute) to enable the bomb to slow down on each bounce to the point that the bomb would almost be at zero velocity at the point that the last contact with the water was made- occurring right adjacent to the dam. As the original author of this answer correctly pointed out, the backspin then guaranteed that, if it had any forward velocity left at all, the bomb would then simply contact the dam face, roll down the wall face of the dam to a depth of 30 feet where an internal pneumatic pistol ignited the charge causing the bomb to explode hard against the dam surface. Although the backspin would allow the cylindrical bombs to "crawl" down the dam face if they came to rest exactly at its surface, there is evidence that Wallace also chose back spin to take advantage of a more subtle aspect of physics - Kutta's lift theorem. More commonly known as the Magnus effect, Kutta's theorem explains the unmistakable curving trajectory of a spinning baseball. Given the operational uncertainties of the attack - night time, altitude variations, crude aiming devices and monumental distractions - Wallace had to appreciate the fact that most bombs would likely strike the surface of the dam on the lake side, bounce off, and sink some distance away. Archival footage of the Royal Navy version of the weapon actually shows these bombs bouncing off the side of a ship. Once the heavy, spinning bomb begins to sink, however, the upward flow of water around the cylinder, coupled with the back rotation, generates a truly impressive hydrodynamic force pulling the bomb back toward the target - the Magnus effect. In the end, the bomb needed to be spun in order to stabilize its path to the target and to prevent it from tumbling out of control. There was no alternative. Sir Barnes Wallace, through his meticulous experiments and his understanding of physics, was able to select the direction of spin that would maximize the bomb's effects.
What carried the bouncing bomb?
Avro Lancaster B111 'Special'
