Air-Propulsion System Presentation by - Jacob Griffin Advisor – Dr. Junkun Ma Senior Design Teacher – Dr. Cris Koutsougeras

Introduction In the field of engineering, machines are designed to tackle specific objectives. One of the more common practices that engineers face is designing systems that can endure specific outdoor terrains. One of the hardest terrains to cover is south Louisiana's’ wetland. Different types of machines such as the surface drive design and go-devil design are two of the more popular designs created to endure these environments. Other alternate designs such as the off-road/water buggy and airboat also hold their own in wetland environments.

Objective The objective of this specific Air- Propulsion system is to design a machine based off of an 18 HP Vanguard that can propel a 12ft to 14ft aluminum boat over water at a desired speed. With specific design factors included in this project, this system should be capable of traveling over swamp/marsh like environments without any problems.

Methodology and Transmission System - Frame design - Propeller pitch - Propeller speed - Ruder design - Motor reduction ratio - Belt drive system - Seals - Bearings - Key selection - Reduction selection

Time Line Thursday 3/21/13 Research components and materials for support and design. Thursday 3/28/13 Obtain Methodology applications for system design. Thursday 4/11/13 Design shaft for propeller and belt system. Tuesday 4/16/13 Design bearing and seal system. Thursday 4/25/13 Design pulley and belt system. Thursday 5/2/13 Design frame and support system for motor and propeller. Thursday 5/9/13 Modify/Design drawings to assist in fabrication.

Goals To achieve a speed of 25 mph from system weighing a max of 600 lbs. Capable of exploring water/muddy environments. To achieve correct ratios for reduction system through the belt/pulley system for optimal performance