Preliminary Design Report

Preliminary Design Report - PRELIMINARY HOVERCRAFT DESIGN...

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PRELIMINARY HOVERCRAFT DESIGN REPORT FOR GROUP #1 By: ZELALEM ALCALEWOLD, GARRETT BRANSON, BRIAN CHINN, SCOTT DENION, CHRISTO GALIATSATOS , JOEY HARTSTEIN ,CHRISTOPHER MILLER, KARL MIHM , CHRISTOPHER NAPIER, PRAD PARIHAR ENES100 Section 0101 Dr. Peter Kofinas March 22, 2009 Table of Contents: Executive Summary 3 Introduction Overview and Benchmarking 4 Hull Structure 5-6 Levitation Fan 7-12 Propulsion 12-13 Power 13-14 Sensors and Actuator 14-15 Gate Activation 15-19 Control Algorithm 19-22 Parts List and Estimate Cost 23-25 Design Drawings 25-30 Gantt Chart and Progress to Date 30 Anticipated Problems 31 Construction and Testing Plan 32-33 1
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Group Roles Brian – Gate Activation Chris M. – Introduction, Executive Summary, Gantt Chart, Levitation Fans Christos Galientos- Sensors and Actuator Chris N. – Sensors, Technical Drawings Garrett – Roles for Report, Anticipated Difficulties Joey – Propulsion, Gate Activation Karl – Programming Prad – Meeting Minutes, Hull Structure (Design Details) Scott – Parts List, Propulsion, Gate Activation This Preliminary Design Report has been approved by : Christopher Miller: Joey Hartstein: Christos Galientos: Scott Denion: Garrett Branson: Karl Mihm: Christopher Napier: Zelalem Alcewold: Prad Parihar: Brian Chinn: Executive Summary Our project has four main goals. The first two are to develop a design presentation and to 2
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refine that design presentation into a formal report. The third and fourth are to learn to work together through regular group meetings and other methods of communication, and to learn how to choose materials and to order them promptly to meet deadlines. We had to make a lot of choices as far as materials were concerned. For the hovercraft body, for instance, we decided to use styrofoam. This material is both light and durable, both desirable characteristics for this project. The size was carefully chosen to balance masses and to enable the hovercraft to operate smoothly on the track. The head was given a semi-hexagonal shape to make steering easier. A vital part of the project is the levitation fan, and a lot of thought had to go into its selection. The first concern was how powerful the fan must be to compensate for the hovercraft = s weight. We determined how strong the fan would need to be by taking the intersection point of the graphs of the flow rate and the pressure rate. With this in mind, we chose a Delta AFB1212GHE case fan because it is powerful (5200 RPM) and operates at a low current. It was also less expensive than other possible models. We chose 3 mm as the optimum height to allow for variables or errors. We decided to use two fans with a swivel system instead of four fans because this set up is cheaper and lighter weight. After some thought we decided on a system of four sensors, two ultrasonic and two light.
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Preliminary Design Report - PRELIMINARY HOVERCRAFT DESIGN...

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