ENGINEERING DESIGN JEMS 2001

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ENGINEERING DESIGNJEMS 2001

• Professor Donald Elger
• Mentors Tamara Cougar, Matt Cunnington, Levi
  Westra

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COURSE GOALS

• TOPICS
• Engineering Practice (what engineers do)
• Engineering Process (how engineering do
  engineering)
• LEARNING ENVIRONMENT
• Fun
• Meaningful Learning (AhA !!)
• Learners are Successful

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Syllabus

• INTRODUCTION
• PARACHUTE DESIGN
• ROCKET TESTING
• ROCKET DESIGN
• Learn engineering by doing engineering !

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Save the Citizens!

• Design, Build and Test A Rocket
• Flies to a precise elevation
• Fast to build
• Carries many citizen
• Appealing
• Constraint
• Build from scratch (no kit anything)

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Learning Notebook

• Ideas
• Learning that fits you
• No tests !
• Freewriting
• Question 1 (3 minutes) Some of my favorite
  things are ..

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Question 2 (4 minute)

• Q2.) (4 min) What I know about engineering is
  .
• Q3.) (4 min) What I would like to learn about
  engineering is ...

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NATURE OF ENGINEERING

• Scientists study what is, Engineers create what
  will be .
• Engineers Create Technology
• airplanes, artificial hearts, air bags ...
• bridges, bicycles, baseballs ...
• cars, computers, cranes .
• rockets, roads, rails .
• skis, satellites, sun-glasses .
• Sometimes engineers create rockets to save
  citizens !

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NATURE OF ENGR (cont)

• Engineers Apply Math and Science
• Engineers Make 1000s of Decisions
• example rocket diameter, length, shape, color,
  number of fins, chute design, nose cone shape,
  recovery system, ...

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How do Engineers do Engineering ???
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The Professional Decision Making Process
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Define the Situation
H. needs a design for a parachute for base
jumpers. He would like JEMS students to do the
engineering. For this situation, What goals
would you select? Prepare a list of potential
goals for H.
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Some decision making ..

• Engineering Way
• Complex problem gt Do a simple problem first
• Constraints fast build, limited materials
• Goals
• Terminal Velocity ?
• Falls straight
• Appealing

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Generating Ideas

• List Ideas for reaching the goal
• more ideas, this is better
• Evaluate Ideas
• most cost effective
• best quality

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DESCRIBE WHAT YOU LEARNED ABOUT

• WHAT ENGINEERING IS .
• HOW TO DO ENGINEERING ..
• (free write for 10 minutes)

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Homework 1
1.) Help! J. (a high school senior) is trapped
on a mountain with his dog Stella (mass is 20 kg)
who has broken her leg. Stella needs to be
parachuted for rescue and J. has contacted you.
Explain how you would find the area for a
suitable sized parachute so that Stella can be
safely dropped over a 200 ft cliff and fall with
a speed of 1 m/s. Spend 30 minute on this
problem. You can write, use equation and draw
pictures. Spelling, neatness, organization etc.
are not important. Be prepared to summarize
your solution in class. Your solution will be
placed in you learning notebook in our next class
period. 2.) Read the handout on drag, and
then write a letter to one of your teachers and
discuss your initial ideas on how you will go
about designing a rocket that has low aerodynamic
drag. Spend 30 minute on this problem. You can
write, use equation and draw pictures. Spelling,
neatness, organization etc. are not important.
Be prepared to summarize your solution in class.
Your solution will be placed in you learning
notebook in our next class period.