P16462: Wind Energy Base Station
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Subsystem Design

Table of Contents

Team Vision for Subsystem-Level Design Phase

Summarizing:
Project Plan for Phase III

Project Plan for Phase III

Key Technical Questions for Subsystem-Level Design Phase

Drawings, Schematics, Flow Charts, etc.

Base Station Analysis

Base Station Hand-Sketch

Base Station Hand-Sketch

The base station can be broken down into three parts: The base plate, the tower structures, and the ring.

1: Base Plate

1: Base Plate

2: Tower Structures

2: Tower Structures

3: Ring

3: Ring

Reel Load Analysis

1: System Schematic

1: System Schematic

2: Stress due to Tether Tension

2: Stress due to Tether Tension

3: Stress due to Crank

3: Stress due to Crank

4: Sum of all Stresses

4: Sum of all Stresses

Stress analysis for Reel System

Foil Stress Analysis

1: Calculations of Beam Structure

1: Calculations of Beam Structure

2: Calculations of Stress

2: Calculations of Stress

3: Max Stress

3: Max Stress

4: Max Shear

4: Max Shear

Transmitter Analysis

Power of noise of FM system

Power of noise of FM system

Flowchart of pre-emphasis

Flowchart of pre-emphasis

Basic circuit and Frequency Bode plot of Gain

Basic circuit and Frequency Bode plot of Gain

Flowchart of De-emphasis

Flowchart of De-emphasis

DC Motor Analysis

DC Motor Anaylsis

DC Motor Anaylsis

H-Bridge Analysis

H-Bridge Analysis

Possible candidates for DC motor

Possible candidates for DC motor

Bill of Materials (BOM)

Begin building a BOM based on design work to this point.
Phase III Bill of Materials

Phase III Bill of Materials

Risk Assessment

Likelihood & Severity Chart

Likelihood & Severity Chart

Phase III Risk Management

Phase III Risk Management

Design Review Materials

Here are links to:

Plans for next phase

Team Plan
Phase IV Plan

Phase IV Plan

Individual Contributions
Team Member Sub Systems Design Phase: What did I actually do? Sub Systems Design Phase: What did I learn? Detailed Design Phase: What will I contribute?
Sarah Collmus
  • Brainstormed proxy tether ideas, brought designs to group for selection
  • Met with multiple subject matter experts for guidance in design (forces, stresses, and material selection)
  • FBDs of the whole plane and base system, ring structure, frame structure
  • Welding and screw shear stress research
  • Material property and cost research
  • Specs for base with reel but no crank or motor
  • While designing, go back to the absolute basics. FBDs are your friend, as are approximations
  • Design to worst case scenarios
  • Seek expert help to gain direction at the beginning and again if questions arise and cannot be answered through research
  • Letting teammates know you need help is okay. Sometimes jobs and tasks need to be rearranged to meet people's availability and skill set
  • Meet with reel designer to incorporate reel into base design
  • Meet with CAD drawer and stress analyzer to draw design in Comsol or Finite Elements to test validity of hand calculations
  • Redesign base specifications as needed
Laura Arciniegas
  • Completed Glider CAD Model, made solid structure.
  • Got to complete simple stress analysis on COMSOL.
  • Built CAD model for a base that had similar structure.
  • Helped with the brain storming for the base design.
  • Assisted in reel calculations.
  • CADed Team's Proposed Base Design.
  • Got experience with simulation flight program.
  • Simplistic designs are easier to analyze.
  • COMSOL techniques for next phase.
  • Flying is very difficult.
  • P14462 had very good design justifications.
  • Distribution of work is not easy.
  • We should have consulted experts for help.
  • Daily work has better results than binged work.
  • CAD other individual sub-components.
  • Conduct stress analysis on each component and then on the whole assembly using COMSOL.
  • Help with the material selection and research purchasing.
  • Make 2D Drawings for the final design and sub components.
  • Talk to an expert in manufacturing to make sure the design is feasible.
  • CAD/COMSOL anything else that the group needs.
Kevin Collins
  • Ran max stress and shear analysis to determine optimal bridle parameters, angle and length from fuselage
  • Worked on reel design
  • Assisted on finding tether tension at max flight speeds
  • Researched tether materials, plan to use 14462 tether, polycarbonate tether
  • Worked with Glenn to understand his simulation better
  • Proved 14462 design of the bridle was feasible
  • I have a better understanding of the simulation and Loyd Paper
  • Learned a lot about EPO foam properties
  • Learned about foam tensile testing operations and concerns
  • Will continue stress analysis at determined parameters
  • Contact Packaging Science for proper testing of foam
  • Use parameters to design Bridle
  • Run second iteration of stress with information from static analysis of bridle design
  • Assist in reel design
Aleksandr Kim
  • Complete analysis on how the system will operate
  • Assist in stress analysis of plane wings
  • Assist in motor selection process
  • Run a lot of meetings and take ownership of program management
  • Continue to order parts and maintain a BoM
  • Program management is hard...
  • If you know what you're doing/where you're going... things get a little more fun
  • If things aren't going too well... someone has to step up or everyone will sink
  • Complete a crank design
  • Complete a gear system design
Michael Ostaszewski
  • Assisted in first flight of the plane
  • Aided other team members with aspects of their design
  • Performed torque and stress calculations for the reel system
  • Met with two subject matter experts (Dr. DeBartolo and Dr. Beodo) along with another team member
  • When doing analysis for a design, it is best to start with simple calculations, and then further complicate the model as needed
  • You don't know everything. If you are unsure of something, ask for help
  • A lot of the time, things don't turn out the way that you originally thought they would
  • Decide on specific values for reel parameters and material for reel.
  • Work with other team members to integrate the the reel with the different parts of the system (particularly the base plate)
  • Continue to manage edge website.
Kevin Larkin
  • Aided in planes first flight.
  • Tested Transmitter ranges.
  • Analyzed transmitter SNR and researched improvements
  • Wrote the Pulse width modulation code in assembly as an input to a motor.
  • I learned about fade ranges and noise margins in FM signals.
  • Assigning and controlling the output pins of a microcontroller
  • How weather affects signal strength.
  • Think of the easiest way to solve a problem first. Do not just dive into analysis. I seem to learn this every 3 weeks.
  • Control system for a motor, including an H-bridge, 3 stage amplifier, DC *portable battery, all circuits drawn and simulated independently.
  • Spend at least a couple hours a week on the flight simulator.
Sukmin Lee
  • Aided in actual flying test
  • Researched on DC motor with calculated parameters from team members.
  • Researched on H-bridge which controls direction of motor.
  • Created a circuit diagram of motor with H-bridge.
  • Assigning regular time for research per day was best way to continuing the project.
  • Learned how H-Bridge and Pulse Width Modulation work
  • Giving a feedback between teammate is good for reviewing oneself and having a chance to make one's work solid.
  • Research on H-bridge system whether i can make it or purchase it based on our motor specs.
  • Choose a motor within candidates and try to get approved by Guide and EE Faculty.
  • Aid in developing a range of Transmitter and receiver.



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