This is a Dambuster Skipping Bomb

Cambridge engineer Dr. Hugh Hunt tries to recreate Barnes Wallis’s famous Second World War bouncing device to blow up a specially constructed dam in Canada. In 1939, visionary aircraft designer Barnes Wallis designed a very special device that would bounce across water and destroy German dams. The science behind this is highly complex, and many of Barnes Wallis’ vital working calculations have been lost. Now, Cambridge engineer Dr Hugh Hunt, is going to attempt to solve the scientific puzzle of exactly how Wallis did it. Starting from scratch, he will rediscover the brilliance of Wallis’s achievement when he tries to hit a dam.