Duke University Mechanical Engineering

1. Duke UniversityMechanical Engineering Freshmen – EGR 20: Engineering Innovation plus Physics, Math, Chem, Computing (Matlab) Sophomore - Foundational Engineering Courses: Solid Mechanics, Dynamics, Thermo, Circuits (1st Mechatronics course) Junior - Analysis for Mechanical Design plus Fluids, Controls (2nd Mechatronics course), Materials, Heat Transfer Senior - Mechanical Engineering Design + Mechanical Systems Design 2 Upper level electives: Aerodynamics, Aircraft Performance & Control, Energy & Environment, Compressible Fluids, Research Projects, Vibrations, Intermediate Dynamics, Manufacturing, Aeroelasticity, etc.

2. “CDIO” Course Descriptions • Engineering Innovation – ~5 “hands on” design challenges (1 reverse engineering, 4 design & build prototypes), teamwork, SolidWorks, sensors & microchips, RapidPrototyping, written reports & presentations • Analysis for Mechanical Design – Adv. Solid Mechanics topics, Fatigue, Fracture, Analysis for displacement & strength, CosmosWorks (FEA), “failure analysis” of components • Mechanical Engineering Design – Components: Bearings, Gears, Cams & Mechanisms, Bolts, Belts, Shafts, etc. Project work in teams w/ machining. Written reports & presentations required. Often involves a class competition. • Mechanical Systems Design – Design, Analysis & Testing of an entire system to meet a “client’s needs.” Team-work, machining, realistic constraints, etc.

3. Engineering Innovation Examples Above: Save the Astronauts (Eggs). Device needed to rescue without killing the astronauts. It “landed” on one table & astronauts were on other table. Device could only be powered by potential energy & started with the cutting of a string. Extra points gained from lighting LED’s using magnetic sensors. Right: Chain Reaction Design Challenge. 4 sub-groups design a separate component which is started by the previous one and ends by starting the next. Must have action & a common theme.

4. Mechanical Engineering Design Examples “Mrs. Smith’s Apple Pie Helper” Using an Apple Slicer – Design a “machine” to slice the apple, remove the core & transport apple slices 1 foot away into a dish for apple pie. Can only use rotary mechanical motion to power the device. “Skeeball” Competition Design a machine, powered by a cordless screwdriver to throw/launch plastic air-filled balls at a target 6 feet away. Pts for accuracy & quantity.

5. Mechanical Systems Design Example - RAT Ram Air Turbine -- RAT Projects include: Solid Modeling (CAD), RapidPrototyping, Machining, Analysis (FEA), Testing in Wind Tunnel Team work, Written & Oral Reports

6. Energy & Environment Design “Greenback Team” – A&S + Engineering Solar Energy used to charge bank of batteries for back-up power during a blackout .. Design of cabinet + system electronics, etc. … testing, stress analysis… “Sustainable Neighborhood Vehicle” – Interdisciplinary Team Solar Energy to power the vehicle

7. Future Projects ??? From Lockheed Martin: • QSST Door/Stairs • JSF Insulating Material • Landing Gear Deployment and Storage • Front Landing Gear Shimmy Damper • Emergency Arresting Hook Spin chute Other “customers”: • Design of an Integrated Crew Health Care System for Lunar Outpost Missions www.aiaa.org/content.cfm?pageid=221) • NASA (education.ksc.nasa.gov/ESMDspacegrant/Sr_Design.htm) • Non-Prehensile Mobile Manipulation • Thermal Control System for Lunar (or Mars) Rovers • Hand-held magnetic lunar dust removal brush • Freeze Back Radiator • Vacuum Cleaner for Spacecraft Cabin Housekeeping for Lunar Surface Missions • FAA (www.faa.gov/runwaysafety/design_competition.htm) Water ingestion test bed