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Everything is Awesome!

https://www.youtube.com/watch?v=StTqXEQ2l-Y
by

Thilo Braun

on 2 December 2015

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Transcript of Everything is Awesome!

Touch Screen (Business Version)
Prezi Template
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Design
Manufacturing
Testing
Results
Analysis
Improvements
GOAL
Group 16
Designing a Wind Turbine
Design Restrictions
Rotate clockwise
But no faster than 3000RPM
max 500g
Self-Start Capabilities
1-3 Blades
Design
Airfoil
Chord
Twist
TSR
Nosecone
Hub
Airfoil Shortlisting
SG6043 & S833
Key Characteristics:
Parts connection
Manufacturing
Explain Theory
Structure
Testing
Hub Manufacturing
Turning
Drilling
Milling
Broaching
To reduce air drag

To minimize weight
To maintain structural integrity:
Threading
Design a small wind turbine
Max. Power:Weight Ratio
Size of parts limited by the 3D printer
Our aim is to minimise the number of parts
Joint strength is dependent on the size of the contact surface area and the geometry of the joint.
Our design is predominantly a finger joint but with diagonal cuts, a feature taken from dovetail joint
Results
Chord
TSR
Comparison of different Tip Speed Ratios
Performance Summary
Twist
Good performance at low speeds (6, 8 m/s)

Stall at higher speeds (>10 m/s)

TSR of 5.9 compared to design TSR of 4.8
Improvements
Sanding the pressure side 'bump'
Nosecone
Improvements
Sanding the pressure side 'bump'

Aims to:
Reduce stalling at high speeds
Increase Cp at high speeds
Parts Connection
Analysis and Improvements
Structural Analysis
Original Turbine
The Ogive Shape
Hollow head
Integrated with the blade root
Final Product
Performance Summary
Good performance at low speeds (6, 8 m/s)

Stall at higher speeds (>10 m/s)

TSR of 5.9 compared to design TSR of 4.8
Higher operational speed

Improved maximum Power Coefficient

Smoother power-curve
Original Turbine
Turbine with Improvements
Analysis of results
Thin-airfoil stall phenomenon

Angle of attack

Complications of blending
Full transcript