REVIEW QUESTION
Wind power is linearly proportional to
which one of the following terms?
A.
B.
C.
D.
Wind Speed
(Wind Speed)2
(Wind Speed)3
(Wind Speed)4
Ken Youssefi / Hsu
Engineering 10, SJSU
1
REVIEW QUESTION
Which of the following wind turbine
designs typically turns faster?
A. Drag type design
B. Lift type design
Ken Youssefi / Hsu
Engineering 10, SJSU
2
Engineering Design
Engr 10
Introduction to Engineering
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What do these “creations” have in common?
Infrared Receiver Board
VEX Controller
CPU
Analog
To
Digital
AD1 Intensity
Exposure
Control
Tuning
circuit
sensitivity
AD14 1k/10kHz
Memory
Digital
IO
Port
AD15
AD16
Exposure
counter
count
Reset
amplifier
reset
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4
2
1
selector
0
1
2
3
4
5
6
7
Infrared
detectors
4
What do these “creations” have in common?
------- ------- ----------------------#include "Main.h"
----------------------
003d50
cfd9
MOVFF
0xfd9,0xfe6
003d52
003d54
003d56
003d58
003d5a
ffe6
cfe1
ffd9
0e02
26e1
MOVFF
0xfe1,0xfd9
MOVLW
ADDWF
0x2
0xe1,0x1,0x0
003d5c
0e05
MOVLW
0x5
003d60
003d62
003d64
003d66
003d68
003d6a
ec7d
f012
52e5
6ede
6add
cfdf
CALL
0x24fa,0x0
MOVF
MOVWF
CLRF
MOVFF
0xe5,0x1,0x0
0xde,0x0
0xdd,0x0
0xfdf,0xfe6
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(cont.)
5
Common…….
1. They are “created” for a purpose, a “function.”
Most fulfill multiple functions.
2. All have some sort of shape, a “form.”
The shape relates to the function, the usage of the
device, materials implementation, aesthetics, and many
other factors.
3. All are made by using “material.”
4. Virtually all have “cost” considerations.
5. Others have: safety, environmental, simplicity,
aesthetics, usability, comfort, …considerations.
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Functions?
Function 1
Functions 1
2
23
Functions 1
2
3
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Functions 1
2
3
4
5
7
Function, Form, Material +
• Function?
• Form?
• Material?
• Cost?
• Safety?
• Environmental?
•
•
•
•
•
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Usability?
Simplicity
Comfort?
Entertainment?
………………
8
Engineering Design
Function: To receive signals from the beacon, analyze, send
information to controller. (input/output).
Form:
Most simple rectangle, except the receivers: semicircle.
Reason: usage requires wider angle.
Material: Epoxy resin, electronic components
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The Key Elements of Product Design
• Function: All products and services have one or more.
It is the reason you are building the product.
It is the purpose of your design.
• Form: The final form of a product, or a structure, is the
result of many factors:
-The way you achieve the function, the “solution”,
-The available material, their use , their properties, and
their influence on aesthetics, cost, environment etc.
• Materials: The availability and properties have direct
effect on the form of the product: strength, weight, flexibility,
weathering, environmental impact, aesthetics, temperature,
cost, etc.
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The Key Elements of Product Design
.
Function
Cost
Form
Material
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Importance per Discipline / Product
CE
ME
EE
CompE SWR
Function
High
High
High
High
Form
High
High
Medium Medium
High
Low
(if any)
Material
High
High
Aesthetics
High
Medium
Medium Medium
Low*
Low*
N/A
N/A
* An enclosure is not considered an engineering design
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Question 1
The final form of a structure is the result of the
following factor(s):
a.
b.
c.
d.
e.
The use of the material
The properties of the material
The way the function is achieved.
The cost and availability of the material
All of the above
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Question 2
•
The three most important elements of a design
are?
A.
B.
C.
D.
E.
Form, Shape, Looks
Form, Shape, Size
Purpose, Scope, Cost
Function, Form, Materials
Responsibility, Applicability, Compatibility.
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Design
The Noun
The Verb
•
•
•
•
•To form an idea
•To plan by drawing the outline
•To sketch
•To contrive
•To project with an end in view
a project
a sketch to work from
a creative activity
‘an arrangement of parts,
details, form, color... as
to produce a complete
artistic unit’
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Design… a definition
'Design is the decision making
process by which an idea is
transformed into an outcome”
( product or service)
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Engineering
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Design
17
Engineering Design is a Process
Manpower / Teamwork
Materials
Process
Methods / Systematic
Machinery / Testing
Money / Cost
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The
Need
Research
Test
Generate
Solutions
Implement
Evaluate Solutions
& Select
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Let’s watch video about
design at IDEO
The Engineering Design Process
• Need for the product or the service
There has to be a need for the product or the service.
– Who defines it?
Society - Government
Market: Customer – Consumer
Need for: Transportation, Communication, Health, Education
Food-processing, preservation, delivery,
Defense, Entertainment, Comfort, Business , …
E10 Laboratory Projects?
• Customer Requirements
What customer ordered: product or services.
(You may have to help your customer define his need)
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The Engineering Design Process (cont.)
• Define The Need: Once the need has been established, the
first step of the engineering process is to define the problem
on hand.
• BUT, before you define a problem you need to understand it.
• Evaluate the project constraints.
• Translate customer requirements into a workable/ engineering
concept.
• What are the requirements/specifications of the turbine
project???????
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Need
The Engineering Design Process (cont.)
• Gather Information (Research) for all “How to”
elements.
• 10 – 30% of an engineers time can be spend on
this step.
Research
• It is continuous rather than a one step activity
(“Learning Curve” applies)
Generate
– Applicable engineering principles
many
– Materials, properties, procurement .
Solutions
– Tools and equipment, how to operate.
– Etc.
Select best
Define
Problem
one
• E10 Research: Aerodynamics, Inventor 2008,
Structural , Electrical, Tech. Communications
Implement &
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Test
Learning
Learning Curve (Lifelong Learning)
Time, (wks, months)
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The Engineering Design Process (cont.)
Need
Define
Problem
• Brainstorming: An activity designed to generate a
lot of ideas/solutions.
• Quantity is of importance - design has many
solutions
Research
• Build on the ideas of others
Generate
many
solutions
• Focus on Function
Select best
one/
Implement
Implement &
Test
- No criticism
- All ideas are welcome
- No limits or boundaries
- No hesitation
Sketching : a graphical presentation of an idea
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Need
The Engineering Design Process (cont.)
Define
Problem
• Modeling
• Functional Performance
Research
• Data collection
• Data Analysis
• Decision
Generate
many
solutions
Select best
one/
Implement
Test
• Analyze failures
• Redesign
• Utilize alternate solutions
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The Engineering Design Process
Constraints: Turbine height = 17 in
Stiffness vs. light weight
Criteria: “constraints” you place on your
design, for best performance,
based on your design, materials ,
safety, environmental…
If you had to build the turbine:
Land, excavation, cost, location, access
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Beyond the design steps
design
-Function
-Function
-Function
-Form
-Material
-Models
final
test
development
-Repeatability
-Reliability
-Quality
-Form
-Material
-Cost
-Prototypes
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Requirements
-Performance
-Customer
-Environmental
-Legal
Ship to
MFG
The Engineering Design Process
Documentation
– Design Specifications
– Assembly Procedures
– Test Procedures
– Materials Specification
– Technical Communications
To Manufacturing
for mass production
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References
1 www.bonluxat.com/a/Philippe_Starck_The_Tooth_...
2. www.auradesignerfurniture.co.uk/products.php?...
3 stores.implex.net/minnesotamedical/index.php?...
4. www.stiebel.com/Ceramics.htm
5 www.campus.queens.edu
6. ec.europa.eu/.../eu10/pictures/slovakia_en.htm
7 chestofbooks.com/crafts/popular-mechanics/Ama
8 speedhunters.com/archive/2008/07.aspxRemove frame
9 www.crystalinks.com/indiarchitecture.html
10 E10 Lecture .P.H.
11 E10-SJSU
12 www.rchelicopter.com/.../
13 www.princeton.edu/.../
14 www.empire.state.ny.us
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21 www.treehugger.com
22 www.governmentauctions.org
23 www.auradesignerfurniture.co.uk
24 www.flexiblemontisa.com/product
seasonsofgrace.blogspot.com
: www.ecofriend.org/.../
www.abcteach.com
www.irtc.org
www.collectiblewebs.com
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