Learn how the pulse jet engine was pioneered and influenced the V1 development. During the early war years, Fritz Gosslau worked with other scientists to turn the pulse jet into a functioning engine by revolutionizing the fuel delivery and air intake systems. He makes the engine work but with a large drawback: it self destructs after a few hours of use. Gosslau believes this will make it perfect for an unmanned flying bomb. He teams up with aircraft designer Robert Lusser. When the Allies bomb Lubeck, Hitler demands revenge. The Luftwaffe are short of planes but Lusser and Gosslau's unmanned bomb could just be the answer and it moves into full development at a top secret testing centre called Peenemunde. The Nazis have to pioneer every aspect of the new V1. The biggest challenge it to get it airborne without a pilot. A system of ramps are designed and their remains can still be found today.