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02/10/2004 By: Strobridge & Sulkoski 1
G.U.S.T.E.R.Mechanical Design Project Presentation
02/10/2004 By: Strobridge & Sulkoski 2
Background System used for
educational purpose. A fan is used to provide
airflow for the testing of small wind rotors.
Current system is insufficient & inadequate. Consists of:
Lego Generator & LEDs to measure power output.
The channel tube is a box shape made out of scrap material.
02/10/2004 By: Strobridge & Sulkoski 3
ProblemDesign & build a wind rotor testing system. Capable of testing wind rotors up to 30 cm in
diameter. Automated, so the user can obtain
measurements of rotor power output to wind speed.
02/10/2004 By: Strobridge & Sulkoski 4
Solution Hub on generator for blade mounting
Will accept various blades with a standard rod Students will be given standard dowels (for example) to
make their blades with
Controlled wind rotor with variable direction & blade pitch Generator hub assembly will be on a stand that will be
controlled by a motor Blade pitch will either be manually adjustable or
electronically controlled
02/10/2004 By: Strobridge & Sulkoski 5
Solution Variable wind speed
Controlled by HC08 & anemometer feedback The anemometer will communicate the wind speed to the
user The HC08 will vary the frequency to the fan to change
the speed until the desired wind speed is met Data Acquisition Card
For importing power output & wind speed to computer program Preferably an external card for Plug & Play interface with
various computers Computer program with user interface
Lets user control the variables of the system & gather the preferred data
02/10/2004 By: Strobridge & Sulkoski 6
System Overview
Anemometer
Tubeaxial Fan
HC08
Generator
Wind Rotor
DAC (Data Acquisition Card)
User at PC
02/10/2004 By: Strobridge & Sulkoski 7
Wind Tunnel Concept
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Transitioning
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Turning Choices
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Turning Choices
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Smooth Radius
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Smooth Radius with Splitter Vane
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Mitered, 90 Degree Elbow
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Choices Transitioning
Square to Round = 30, L = 11.2”, Co = 0.20
Round to Square = 30, L = 11.2”, Co = 1.20
Turning Smooth Radius with Splitter Vane
r = 2’, Cp = 0.05
02/10/2004 By: Strobridge & Sulkoski 15
Milestones Design for the hub assembly
Optional, seen as a last item of importance by customer
Wind speed Varying the speed of the Tubeaxial Fan’s AC motor Getting the anemometer to talk to the HC08 to set the
speed of the motor Possibility of calibration to cut out the anemometer
Mobility Not requested, unit will have a permanent home
Unit will still be able to be disassembled and reassembled in a different location
02/10/2004 By: Strobridge & Sulkoski 16
Time Line
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