P16228: Magnetically Levitated Propeller
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Systems Design

Table of Contents

The system design phase had the sole purpose of coming up with an overall concept or idea for the project. With an agreed upon concept, this will lead us into the next phase where we start design the subsystems and making them more detailed/specific.

Team Vision for System-Level Design Phase

Goals

Our goals for this phase of the project included several stepping stones. We wanted to come up with several concepts for the project, but begin to shorten the list and begin to choose the top concept ideas. Learn possible risks involved with the design and assess the possible ways to fix them; find some new benchmarks for components and subsystems Identify the functions and the smaller components of each function. Creating some examples of numbers and feasibility on ideas. Another goal we have set for ourselves is to talk to a contact at Boeing and just get some feedback and specs from the company itself.

Accomplishments

We were able to complete many of our goals. The concept ideas were evaluated and the top two concepts are the first and third one. Risks were discovered and possible solutions were created and the benchmarks were added such as the microcontrollers. We learned more about the overall functions of our entire system and have been coming up with several feasibility analyses.

Other

We have not contacted anyone at Boeing yet due to us wanting to get input from our customer (Dr. Day).

Functional Decomposition

Functional Decomposition

Functional Decomposition

Functional Decomposition Chart

Benchmarking

Benchmark #1

Benchmark #1

Benchmark #2

Benchmark #2

Benchmark #3

Benchmark #3

Concept Development

Concept Idea 1

Concept Idea 1

Concept Idea 1
Gift Shop Concept

Gift Shop Concept

Magnetic Shaft Concept

Magnetic Shaft Concept

Morphological Chart and Concept Selection

Morphological Chart

Morphological Chart

Morphological Chart
Visual Morphological Chart

Visual Morphological Chart

Visual Morphological Chart

Criteria for Concept Selection

  1. Uses magnets for levitation
  2. Can it operate underwater
  3. Is it safe
  4. Are there shafts and seals
  5. Will Boeing be able to adopt the design
  6. High flow of water
  7. Is it completely waterproof
  8. Is it stable
  9. Keeps propeller and user safe
  10. Not an electrical hazard
  11. Programming is efficient and robust
  12. Can be completed in 2 semesters
  13. Easy to use
  14. Cheap to produce
  15. Efficient
  16. Generates a lot of thrust
  17. Friction-less and no mechanical wear

Fallback Options

Concept Selection

System Design Pugh #1

System Design Pugh #1

System Design Pugh #2

System Design Pugh #2

System Design Evaluation

System Design Evaluation

Pugh Charts

Systems Architecture

The Magnetically Levitated Propeller design will be comprised of several mechanical and electrical systems:

Feasibility: Prototyping, Analysis, Simulation

Phase-Appropriate Analysis

Analysis/Prototype

Question: How will thrust be calculated?

Assumptions:

Analysis: Note: We have not reached the phase to actually do calculations of thrust on a the propeller, so these will be the steps or ideas needed to solve it. Choose a method for calculating thrust

Thrust Equations

Thrust Equations

Calculation

Calculation

By Bernie Garcia

Research/Prototype

Question: What material and structure is most appropriate for the propeller?

Assumptions:

Analysis: Research and comparison of various commonly-used propeller materials. See which would be easiest to integrate magnetic design and system.

Shown below is a boat propeller material comparison from Eris Propellers. Link to website is provided under Design Review Materials section.

Calculation

Calculation

By Mike Purcell

Analysis/Research

Question: What forces/strength values are the normal outputs of rare earth magnets? (In general) Alternatively, how much force do rare earth magnets exhibit?

Assumptions:

Analysis:

Disc/Cylinder Magnets

Disc/Cylinder Magnets

As shown by the chart, as the separation distance decreases, the magnetic attraction force increases. Likewise, our end goal is to decrease the separation distance between two or more earth magnets (neodymium) in order to maximize the attraction force between such magnets.

Graphical Strength Representation

Graphical Strength Representation

By Joe Bernardini

Analysis/Prototype

Feasibility

Feasibility

Document Version

By Elijah Sensenig

Battery Size and Weight Feasibility

Battery Size and Weight Feasibility

Spreadsheet

By Zach Louison

Designs and Flowcharts

System Flowchart

System Flowchart

Visio Flowchart

Risk Assessment

Risk Management

Risk Management

Download

Design Review Materials

https://erispropellersus.wordpress.com/2010/11/19/a-comparison-of-commonly-used-propeller-materials/

Plans for next phase

Elijah Sensenig

Bernie Garcia

Zach Louison

Mike Purcell

Joe Bernardini

Phase 3 Plan Glimpse

Phase 3 Plan Glimpse

Gantt Chart - Phase 3


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