Abstract: A water-rocket water-transfer-station, referred to as the water station, is comprised of a specialized manifold combined with a plastic carbonated drink bottle, which functions as a water reservoir. The water reservoir is pressurized with air to make a water transfer station for water rockets. By using pressurized air, water can be transferred from the water station to a water rocket launch system, referred to as the launcher, and into an attached water rocket. A second unique feature of this system is the ability to return water from the water rocket back into the water station reservoir, as in the case of an over-fill, or in a launch abort. This unique water station can easily and quickly transfer water to a water rocket from a water reservoir, and in reverse from a rocket, without having to remove the rocket from the launcher. This saves time and minimizes water waste which is important when water has to be hand carried into a remote launch field.

Abstract: A pivoting lever that is designed to hold open by same polarity magnets or hold closed by opposing polarity magnets using a difference in lever arm lengths. The magnet pair closest to the pivot point will repel to hold the lever open. The magnet pair furthest from the pivot point will attract to hold the lever closed, retaining an object. The magnet pair that keeps the lever open has a magnetic force advantage compared to the magnet pair that keeps the lever closed. The magnet pair that keeps the lever closed has a mechanical advantage due to the longer lever arm. An external force is required to either open or close the lever. Once open it will remain open until acted upon by an external force. Once closed it will remain closed until acted upon by an external force.

Abstract: A water-rocket water-transfer-station, referred to as the water station, is comprised of a specialized manifold combined with a plastic carbonated drink bottle, which functions as a water reservoir. The water reservoir is pressurized with air to make a water transfer station for water rockets. By using pressurized air, water can be transferred from the water station to a water rocket launch system, referred to as the launcher, and into an attached water rocket. A second unique feature of this system is the ability to return water from the water rocket back into the water station reservoir, as in the case of an over-fill, or in a launch abort. This unique water station can easily and quickly transfer water to a water rocket from a water reservoir, and in reverse from a rocket, without having to remove the rocket from the launcher. This saves time and minimizes water waste which is important when water has to be hand carried into a remote launch field.

Abstract: A plastic sheet that can be formed into a cylinder or truncated cone and attached to a pressure vessel by use of integral self-adhesive tabs. The cylinder or truncated cone is then used as an extension and structure for the attachment of rocket fins.

Abstract: A pivoting lever that is designed to hold open by same polarity magnets or hold closed by opposing polarity magnets using a difference in lever arm lengths. The magnet pair closest to the pivot point will repel to hold the lever open. The magnet pair furthest from the pivot point will attract to hold the lever closed, retaining an object. The magnet pair that keeps the lever open has a magnetic force advantage compared to the magnet pair that keeps the lever closed. The magnet pair that keeps the lever closed has a mechanical advantage due to the longer lever arm. An external force is required to either open or close the lever. Once open it will remain open until acted upon by an external force. Once closed it will remain closed until acted upon by an external force.