We started our rocketry project about a month ago. We have to build a bottle rocket that can go the highest in meters. My group is using 2 1 liter bottles cut and duct tape together. We have 6 wings in total. Our top wings has a hole in it so the air can get in it. They are also balsa wood witch is a light wood that is like card board. Our bottom wing is made out of card board. It is the same design but no hole. Our nose cone is 24.5 cm and very light. Launch Day. Its launch day and we are ready to shoot this rocket to the moon. Our rocket was recorded to be 15 meters up in the air. Only 2 rockets worked. Every one else had some sort of leak. And one even EXPLODED!