We enjoyed designing and making our own Second World War planes. We had lots of ideas about how the wings and tail should look having visited Duxford Imperial War Museum and seen lots of planes. We were able to apply our scientific learning about electrical circuits in order to ensure the propellor spun in the right direction to propel the plane – they all flew really well when suspended from a string. We discovered the importance of finding the centre of gravity in order that our planes balanced horizontally. The size of the tail also proved to be a key factor in whether or not the planes flew successfully. If the tail was too small, the plane was not able to maintain its circular flight path.