This is a simple nosecone design with an additionally reinforced tip, and reinforced body.Being designed for a paper rocket, this was sized appropriately to fit on the end of a rocket meant to be fired off of a 1/4 inch PVC pipe. I would recommend avoiding applying launch pressure directly to the bottom of the nosecone, so sealing the tube before attaching the cone may be a good Idea.WARNING: This design has NOT yet been tested, and may not be strong enough to withstand landing forces.