Fusée
Our two families have to build rockets propelled by pressure and pass them through the target. The rockets must obligatorily have 3 ailerons and a pointed cone (a cap) on their head. A large rocket that passes through the target is worth 3 points, a medium one: 2 points, and a small one: 1 point. The family with the most points wins. If there is a tie, the family that uses the most different models, to make its points, wins. This has to be done in 45 minutes.
