1 / 19

ENGR B47 Intro. to Egr . & Design Lab #2

ENGR B47 Intro. to Egr . & Design Lab #2. The Design Process & The Book Light. September 4, 2014. Today’s Agenda. Design Process example 1: HPH Design Process example 2: IDEO Start a project of our own Info on LEDs Info on building a circuit Divide into teams

shamus
Download Presentation

ENGR B47 Intro. to Egr . & Design Lab #2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ENGR B47Intro. to Egr. & DesignLab #2 The Design Process &The Book Light September 4, 2014

  2. Today’s Agenda • Design Process example 1: HPH • Design Process example 2: IDEO • Start a project of our own • Info on LEDs • Info on building a circuit • Divide into teams • Define project specifically • Start drawing up designs

  3. The Design Process Imagine it. Design it. Build it. Improve it. - Landis p.39 • Specifics in 2.2 - 2.3 • Walk through case study

  4. Design ProcessCase study: Human-Powered Helicopter Step 1: Customer Need or Business Opportunity • Different than business route • Design prize offered by The American Helicopter Society (AHS) • “Isn’t about creating a practical machine. It is an engineering challenge to the vertical flight technical community. This is a multi-disciplinary project that harnesses technical skills and teamwork to overcome what many have said for three decades was an impossible challenge” • Open up new possibilities • First offered in 1980, $25k payout From AHS website, accessed 2014-09-01

  5. Design ProcessCase study: Human-Powered Helicopter Step 2: Specifications and Constraints • Set by rules Human-Powered Helicopter competition • Rotary wing • Capable of VTOL • Flight time: 60 seconds • Altitude: must exceed 3 meters momentarily • Drift: stays within 10 meter square* • Energy storage: not permitted • Lighter than air gasses: not permitted ... and others From AHS website, accessed 2014-09-01

  6. Design ProcessCase study: Human-Powered Helicopter • What was not said • Use 6061-grade aluminum • The four blades should have a teardrop profile • The hand-crank should should be positioned above the pilot • We don’t care how it works, we care that it works If AHS knew how to build the best HPH, they’d have done it already! From AHS website, accessed 2014-09-01

  7. Design ProcessCase study: Human-Powered Helicopter Step 3: Data and Information Collection Step 4: Development of Alternative Designs Step 5: Evaluation of Design / Selection of Optimal Design Step 6: Implementation of Optimal Design Step 7: Test and Evaluation Step 8: Redesign! (“fail fast”) From AHS website, accessed 2014-09-01

  8. Design Process • Book tracks those of U. of Maryland Team • Gamera I • Gamera II • “Whether the Gamera team (or any other team) will have won the Sikorsky Prize by the time you read this is anybody’s guess”...

  9. Sikorsky Prize Winner! • Set on June 13, 2013 • Completed by AeroVelo • $250,000 cash prize Image from Popular Mechanics article posted July 11, 2013

  10. Sikorsky Prize Winner! Video available on AeroVelo website: http://www.aerovelo.com/projects/helicopter/intro/

  11. Example #2: IDEO’s Shopping Cart • Video from 1999 (don’t laugh!) • Follows a premier design company - IDEO • Watch the process in action • Video available on YouTube:https://www.youtube.com/playlist?list=PL23EB9F0658CEDF6A

  12. The Book Light Project Searched common online marketplace for “Book Light” about nine hours ago (link)

  13. What Tools Do We Need? • Light source is LED • Info here is paraphrased from Georgia State University “HyperPhysics” website http://tinyurl.com/LEDinfo4BC • How is it different from light sources we know? • How does it work?

  14. Knowledge of Basic Circuits • Wires are like electron superhighways • Idealized as resistance of 0.000 Ω • Never any electron traffic jams • Battery is like electron elevator (pretty bad metaphor but the best I can do) • Low energy electrons come in • High energy electrons go out • Will add in a switch • “Open” means you’ve put up a roadblock • “Closed” means you’ve re-opened the superhighway

  15. Time to Make Teams • Ideally... • Everyone gets a person familiar with circuits • Everyone gets a person with soldering experience • If not? • Welcome to real life • Be prepared to learn • Don’t fake it - ask some questions

  16. Design Criteria A device that gives off LED illumination when “clipped” to a book (off otherwise) Has construction sturdy enough to withstand everyday use Is visually appealing to the user

  17. Constraints • Materials • Chip clip (various) • LED • Wire • Battery holder • AAA batteries • SPST NO switch • Electrical tape • Other components, decorations, paint (not supplied)

  18. Tentative Schedule • Week 1: Preliminary Designs • Week 2: Finalize Design, Wiring • Week 3: Aesthetics, Ergonomics, Refinement • Week 4 (Sept 25): Evaluation/ Presentations

More Related