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Greatest Engineering Achievement of the 21st Century

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Alexis Hall

on 6 September 2014

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Transcript of Greatest Engineering Achievement of the 21st Century

Greatest Engineering Achievement of the 21st Century
3D Printing
What is it?
"additive processes in which successive layers of material are laid down under computer control"
Global Positioning System
Realized and Developed by the US Department of Defense
Created by Bradford Parkingson, Roger L. Easton, and Ivan A. Getting
Group 5
Alen Spiller: Future Impact of GPS
Alexis Hall: GPS History
Kevin Gaffney: Future of 3DP
Manu Kumar: History of 3DP
Nathan Kohl: Team Leader
Positive and Negative Consequences
How does it work?
Global Positioning System
How it Works!
Present Pros and Cons of both
And the Winner Is...
"This is one of history's most exciting and revolutionary developments"
Prominent Uses
Navstar GPS 1 launched by the US Department of Defense on February 22, 1989, the first of 7 satellites.

Satellite constantly sends out two sets of information:the time the message was transmitted and, satellite position at time of message transmission.
A receiver uses the messages to determine it’s location.

1. Aids in Space Navigation
2. Aids in Military Defense
3. Helps navigate people in their day to day lives
4. Increased road safety
5. Decrease in transportation cost
1. People are relying
too heavily on this
2. People are losing
the basic skill of
reading a map
Brief History
1984- Charles W. Hull of 3D Systems Corp
1990’S -1992 - Building layers by layers
1999’s - Engineering organs bring new advances to medicine
2006- SLS leads to mass customization in manufacturing
2008 - Major breakthrough for prosthetic
2010- World’s first 3D- printed robotics aircraft
2011- World’s first 3D- printed car
2012 - 3D-Printed prosthetic Jaw is implanted
3-D Printing
Scaffolds and organ printing
Surgical modeling


Allows for Rapid Prototyping
Unique Medical Applications
Creates intricate parts for custom situations (Versatility)
Improves planning through better communication and quick initial tests
Material Type is limited
Printers are too expensive for private use
3D Printer
Image courtesy of stratasys.com
Used daily by many people
Foundation for many other technologies
Unique affect on Military assets
Increased Road Safety
Increases shipping efficiency
Creates a dependency
Available materials
Some materials are very difficult to print with
Accuracy and surface quality
Most accurate 3D printers today print layers 10 microns thick
Local Composition Control
Difficult to print objects that have different properties at different locations
Extraordinary breadth of applications
Impacts the most people.
Saves lives through improved road safety
Allowed for technological growth in many other fields (Networks, Phones, Survey etc.)

D. Dimitrov, K. Schreve, and N. D.E. Beer. "Advances in Three Dimensional Printing." Journal for New Generation Sciences, vol. 4, pp. 32-43, 2006.
Bogosian, Joseph.(2003). Current &
Potential Economic Benefits of GPS.

Global Positioning System. (1998, May 6). Website. http://www.phy.syr.edu
Sturdevant, Rick W., "The Socioeconomic Impact of NAVSTAR GPS",
AIAA Space 2009 Conference & Exposition,
September 2009
A brief History of 3D Printing. T.RowePrice.http://individual.troweprice.com/staticFiles/Retail/Shared/PDFs/3D_Printing_Infographic_FINAL.pdf
The history of 3D printing. redOrbit.http://www.redorbit.com/education/reference_library/general-2/history-of/1112953506/the-history-of-3d-printing/
GPS.gov: Space Segment.(2014, September 2).GPS.gov[Online]. Available: http://www.gps.gov/systems/gps/space/
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