Project

Man Overboard First Response Launching System [M.O.B. F.R.L.S.]

This project is an automatous life saving device for the maritime industry. It incorporates a detection system for any ship out at sea. Essentially, the project is a pneumatic cannon, responsible for deploying a projectile to a man over board victim, within a five meter radius from him/her. An infrared detection system identifies and disperses information, of the man over board, to the deck side-bridge watch officers and they make the call to use this project. The project will be ideally mounted against the aft super structure of the vessel. This will result in less initialization time period before the project fires. During this initialization period, the primary pressure chamber will fill to calculated psi for an adequate range of where the person should be in the sea. The projects Arduino brain calculates ideal pressures for corresponding range values. The project will be fixed at a 45 degree angle and only have a single degree of freedom to pivot , to 45 degrees starboard and 45 degrees to port: resulting in a full 90 degrees of freedom. The projectile is encapsulated, which safe keeps an AIS-SART, and vacuum packed inflatable life vest to the victim. The capsule also aids in the buoyancy of the projectile for the victim to easily interact with our project. A hydrostatic release valve deploys the package to the victim for a more immediate safety response. The immediate response time our project offers, greatly enhances the probability of saving a man over board’s life. In different waters of the globe, fast immediate reactions are required for a successful man overboard recovery. The project, built of schedule 80 PVC, is responsible for test data which has been the back bone to many engineering design decisions. These tests have reassured our initial design constraints and goals. Originally, we wanted the project to fire a projectile weighing approximately 1.5 pounds, 100 meters. After testing, we have successfully launched our prototype projectile 100 meters with a three pound projectile without exceeding our factor of safety. More testing within a range-safe rich environment will help further design decisions to compensate the ship’s speed. Ideally the cannon must fire the projectile with enough velocity to overcome the ship’s speed. We are considering the system to integrate with ships, sized similarly to the TSGB, at speeds around 17 knots. We designed our cannon to use pneumatics as our power fluid to propel the projectile and electrical components to control and actuate the system. Our main challenge revolved around budget and time constraints. Our final project operates on the same principles as an air cannon. Our final conceptual design for the project proved our system’s effectiveness and purpose by using materials that fit within our budget. Our design integrates a platform for further improvements and modifications. Our current design assumes that our system is for a ship that is moving in a straight course at full ahead with some changes in current and no wind. Our theoretical calculations do not take into account for the aerodynamics of projectile’s flight. Our collected data supports the decision to neglect the chaos of air travel out at sea. To hold the cannon at a 45 degree angle, we designed a bracket which attaches to a pivotal structure. Using electrical actuators and motors, we designed the cannon’s actuation and rotating base to cover an arc of 90 degrees split equally between the centerline.

A project submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements for the B.S. degree. Department of Mechanical Engineering ME 494

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