A multi-functional base for making water rockets

Abstract

This utility model discloses a multifunctional base for making water rockets, relating to the field of water rocket manufacturing technology. It includes a cola bottle and a cylindrical base. The cylindrical base is snapped into the cola bottle. A threaded through hole is formed at the center of the bottom of the cylindrical base. Four sets of strip-shaped grooves are evenly spaced on the cylindrical base. The top of the cylindrical base abuts against a semi-circular card. Two sets of semi-circular cards are provided, with their inner walls abutting against the outer wall of the cola bottle. A trapezoidal placement block is provided on the outer wall of the cylindrical base. The threaded through hole is threadedly connected to a threaded collar, which is connected to a bottom blocking plate. The bottom blocking plate abuts against the cylindrical base. Through the snapping of the cylindrical base with the cola bottle and the abutting action of the semi-circular cards, the cola bottle is stably fixed, effectively preventing the bottle from shaking during drilling and ensuring that the drilled hole is centered on the cola bottle. The strip-shaped grooves on the cylindrical base reduce the weight of the base while limiting the position of the tail fin attachment, ensuring the symmetry of the tail fin attachment.

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