Engineering Design and Research

Engineering Design and Research
Welcome to ENGINEERING DESIGN AND RESEARCH. Upon entering the class please have a seat towards front of the class (Do not move chairs from one table to another).

Course_Overview Engineering Design offers students the opportunity to understand and apply knowledge / skills required to create & transform ideas + concepts into a product that satisfy specific requirements. Students will experience design engineering in the creation, synthesis, iteration, and presentation of design solutions. This course will maintain a focus on: the history (and future) of engineering, how engineers apply mathematical, scientific, creative, and technical knowledge / skills in creation (refinement) of technical products/systems. A key approach will be the employment of a sequential, and iterative design and development process to solve authentic engineering tasks/problems

. The following major ‘topics’ or ‘chapters’ will be included to organize instruction of appropriate standards and benchmarks and reflect contemporary engineering industry practices: • Principles of Design • Engineering Resources • Engineering Design Process • Project Management

Major projects = Rockets - Team America Rocket Challenge – Work in a team to develop a rocket that can launch an uncooked egg 700 feet in air, deploy recovering system to safely land egg as close to 45 seconds as possible. Green Energy Design – Research & design a ‘concept’ Green Home that is off ‘the grid’– Develop floor plans, Build ‘to scale’ model Topic Investigations – Research specified area of engineering to create a presentation that includes written report, power point presentation and informative video .

*Portfolio/Journal: To document and support participation and progress in the class students will submit a project portfolio/Journal documenting the student’s work. Portfolio format – The portfolio should be presented in the following format. Title Page - Include name of challenge, team name and logo, name of student and mod number. Table of Contents Body – Design Brief, Class notes (Class reading, video, or computer research lesson), data, design sheets, and modifications. Conclusion – Was solution successful? Recommended modifications

LAB SAFETY – It is imperative students practice proper lab safety and refrains from horseplay in the technology lab. Students not following lab safety will not be permitted to work in the lab setting and will be assigned alternative lessons. Absolutely no horseplay. Wear safety glasses during lab activities. Do not distract students using power tools, cutting tools, hot glue guns, or electronic devices. Use tools / equipment only after proper instruction from teacher. Use tools / equipment correctly, after receiving teacher permission, and only when teacher is in classroom. Report all accidents and safety concerns immediately to instructor.

ENGINEERING DESIGN RESEARCH
Proposed Outline – The proposed outline indicates one lesson (lasting more then one class period) per week. INTRODUCTION – Engineering, Technology, Society and the Environment Engineering & Technology – Chapter 1 pp. 3 – 43 UNIT 1 Principles of Design – Part 1 Lesson 1 Design - A Formal Process Basic Drafting Review, CAD, Selected text from Mechanical Drawing Books, & Google Sketch up, Lesson 2 Design Requirements and Prioritizing Constraints – Rocket Design Challenge & Rocket Modeler, Fundamental rocket design principles from Rocket Modeler Text: Engineering & Technology Chapter 2 pp 49 – 88

Proposed Outline – The proposed outline indicates one lesson (lasting more then one class period) per week. UNIT 2 Engineering Resources Lesson 1 Technology Systems – Unit2 Lesson1 T-drive: Advanced Tech – Eng Dsgn Rsch ( Lesson Plan) Discuss Technical Systems – Spin-offs from NASA Construct & Test first rocket Lesson 2 Mathematics – Text: Engineering Design: Math & Science Applications pp. 429 – Construct & Test second rocket Text: Eng Dsgn Chpt 3 pp Dsgn Team Lesson 3 Material Science – Text: Engineering and Technology Chapter 4= Materials & Materials Processing – pp 131 – Intro: Team America Rocket Challenge Intro: Rocket Sim Create Rocket design teams and designate responsibilities, Begin design process

Proposed Outline – The proposed outline indicates one lesson (lasting more then one class period) per week. UNIT 1 Principles of Design part II Lesson 3A Human Factors Affecting Design – Ergonomics Packet – Capsule design – team members design their rocket system/ component Lesson 3B Environmental and Industrial Factors Affecting Design - Text: Engineering and Technology Chapter 1 – Sections 4 Technology and Society and Section 5 Technology and the environment – Begin construction of rocket components Lesson 4 Research and Market Profit Influence on design – Engineering Your Future – Chapter 5 pp125 – 143 – Complete construction of first TARC rocket Lesson 5 Refining Design - - Text: Engineering Design - Chapter 8= Testing and Evaluating – pp – Analyze initial TARC designs Begin secondary design & construction of modified rocket components

Proposed Outline – The proposed outline indicates one lesson (lasting more then one class period) per week. UNIT 1 Principles of Design Lesson 1 Design - A Formal Process Lesson 2 Design Requirements and Prioritizing Constraints Lesson 3A Human Factors Affecting Design Lesson 3B Environmental and Industrial Factors Affecting Design Lesson 4 Research and Market Profit Influence on design Lesson 5 Refining Design UNIT 2 Engineering Resources Lesson 1 Technology Systems - Building Blocks and Technology Transfer Lesson 2 Material Science Lesson 3 Mathematics Lesson 4 Patent Process

UNIT 3 Engineering Design Process Lesson 1 Trade Offs vs. Creativity in Design - Reverse Engineering Info Packet and Product to take apart Lesson 2 Design Principles and Problem Clarification Lesson 3 Modeling Techniques Lesson 4 Communicating Results

UNIT 3 Engineering Design Process Lesson 1 Trade Offs vs. Creativity in Design Lesson 2 Design Principles and Problem Clarification Lesson 3 Modeling Techniques Lesson 4 Communicating Results UNIT 4 Project Management Lesson 1 Managing Engineering Design Lesson 2 Quality Assurance and Product Development Engineering & Technology Chapter 5= Manufacturing – pp

LAB SAFETY – It is imperative students practice proper lab safety and refrains from horseplay in the tech lab. Students not following lab safety will lose lab privileges and be assigned alternative lessons. - Absolutely no horseplay. - Wear safety glasses during lab activities. - Do not distract students using power tools, cutting tools, hot glue guns, or electronic devices. - Use tools / equipment only after proper instruction from teacher and after receiving teacher permission. Report all accidents and safety concerns immediately to instructor. Wear safety glasses when using power equipment -No tools or equipment to be used when instructor is out of class

Info Packet – Engineering & Technology
Chapter 1 – Engineering, Technology, Society, and the environment Sections pp.4 – 25 In your notes title a sheet Technology history Write and answer questions 1 – 5 as you read sections 1 - 3

Introduction of Topic Investigation Assignment
Engineering Design Research L2 Introduction of Topic Investigation Assignment DRILL: Identify two historic engineers who lived in the 1400’s and made contributions that changed society Please obtain ‘Engineering Your Future’ Text and turn to page 15. Read A CASE STUDY OF TWO ENGINEERS pp. 15 – 20 Identify two engineers discussed and contributions to society

Identify two engineers discussed and contributions to society
Leonardo Da Vinci Envision mechanized innovations including weapon design , flying machines, Johannes Gutenberg First mass producing printing press

Go to Engineering Design and Research Topic Investigation power point at H:\EngineeringDsgn&Rserch\EDR TopicInvest- Inventor-Engineer.ppt

Engineering Design & Research L3 – Visualization and Graphics
OBJECTIVE : Improve visualization ability and become familiar with several common graphical communication techniques DRILL: Explain the concept of visualization and how it might help an engineer Text : Engineering your Future – pp

Engineering Design & Research
Please turn in your Topic Investigation Proposal Only two topic Investigations will be permitted for any one engineer or invention We will List the Topic Investigations Once two of the same have been achieved no more for that topic will be accepted.

Text : Engineering your Future – pp 230 – 278
Complete Research packet

Engineering Design & Research L4 –Drafting Review
OBJECTIVE : Identify common measuring tools to measure linear distance as we review text to prepare to set up first drafting drawing DRILL: How has technological advancement of the last twenty years aided in research efficiency? Review Mechanical Drawing Text

Introduction to Drafting
Basic Drafting tools include: T-Square 30/60 Triangle 45 triangle Drafting Scale

Borders and Title Blocks Draw top of title block
1/2

Borders and Title Blocks Draw borders to following measurements
½ inch ¼ inch ¼ inch 1/4 inch

Borders and Title Blocks
3” ” 1” 1” 1”

Title Block – Lettering Guides: Draw two light horizontal lines, one line 1/8” from top of title block and one line 1/8” from bottom.

Drafting Scoring Tool Example __/ 2 Line work. __/ 2 Lettering
Drafting Scoring Tool Example __/ 2 Line work . __/ 2 Lettering __/ 2 Dimensioning __/ 3 Accuracy *values may change according to drawing Be sure to use light construction lines as you are laying out (constructing) the drawing.

Refer to pages of Mechanical Drawing textbook for information pertaining to Orthographic Projection Refer to pages of Mechanical Drawing textbook for information on dimensioning. P. 130 Dimensioning 11.2 P. 130 Lines and symbols P. 130 Dimension lines 11.4 P. 130 Arrowheads 11.5 p.130 Extension Lines P. 133 Placing dimensions… Unidirectional P. 134 Theory of dimensioning 11.13

For the drafting review you are to measure a visualization block’ and draw it as an orthographic, oblique, and isometric drawing. Only the Orthographic drawing needs to be dimensioned.

Engineering L5 – Intro to CAD –Using Google Sketch-up Drill: What does the acronym CAD stand for?
Objective: Experiment with various ’Sketch-up’ tools as we complete a set of tutorials in order to gain Fundamental understanding of CAD

L5 – Intro to CAD –Using Google Sketch-up Go to ‘my computer’ -> Student Drive -> ‘tech’ folder -> ‘Sketchup_tutorial video’ folder. Using the ‘Google Sketch-up tutorial handout’ as a guide complete the described activities to gain an understanding on how to use this simple CAD program. After completing the tutorial use ‘Sketch-Up’ to complete and orthographic and isometric view of your ‘drawing block

Engineering Design and Research L6 – Safety Review Safety Video Safety test
OBJECTIVE : Safety DRILL: Identify three important safety rules to follow while working in the Technology Lab

How many of the following rules did we get?
When working around machines with moving and/or spinning parts be sure to secure dangling jewelry, long hair, loose clothing, and remove accessories that might get caught. When working with equipment focus on what you are doing. Do not speak to people operating machines. Stay out of machines ‘Safety Zone’ (3 foot perimeter) if you are not directly involved in operation. Immediately report all accidents/ injuries to instructor. Report any ‘unsafe’ conditions to instructor Use tools / equipment only as directed and after instruction Do not carry hand tools etc. in your pockets

A few more important safety items
Tools for cutting should be sharp…Dull tools cause injuries Wear safety glasses Return tools and equipment to proper location as soon as you are finished using it! Do not carry long stock by balancing it in center. Wear an apron to protect / secure clothing Do not put sharp tools or hot items near neighbors, face, or handle carelessly. Do not use electrical tools or items in such a way that is likely to cause shock. Always leave class with same number of body parts that you entered with.

SAFETY VIDEO The following video deals with safety in the Tech Ed lab, as well as general safety rules to follow outside of class. As there is so much information presented in video you will not be asked to take notes. You are expected to pay attention

SAFETY QUIZ Please be sure to immediately fill in name, period and date. Do not write on question sheet.

Consider these two images
Consider these two images. One is a serene setting found throughout the globe. The other is an example of technological beauty. However, in order to have the convenience and beauty of a bridge, there will be considerable tradeoffs with respect to ethical, political, and economic constraints. Create a note sheet titled Engineering Tradeoffs and Constraints and 1) Identify Ethical, Political, Economic, and Ecological tradeoffs / constraints that must be considered in bridge design and location

Design Requirements and Prioritizing Constraints
Engineering Design Research L8 Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 49 – 88 Objective: Prioritize Design Constraints to Avoid Conflict Between Economic, Ethical, Safety and Political Issues. DRILL: Explain how Economic, Political, and Ethical issues can arise in trying to create a car to meet the challenges of high gas prices and pollution concerns. What other issues might arise in the car design?

Engineering Design Research L8
Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 49 – 88 Read pages 48 – 52 As you read please answer feedback questions 1 & 3 on page 53. Look at figure 2.3 and read the supporting text. How did the variations between designed and constructed walkways cause the failure

Kansas City Hyatt Regency Hotel
Walkway Collapse Background The Hyatt Regency Hotel was built in Kansas City, Missouri in This hotel consisted of a 40-story hotel tower and conference facilities, which were connected by an open concept atrium. Inside the atrium, there were three walkways that connected the hotel to the conference facilities on the second, third, and fourth floors. The atrium was 145 feet long, 117 feet wide and 50 feet high.

The Hyatt Regency Walkway Collapse
Presented By: Jonathan Foster 4/9/02

An Engineering Disaster
Kansas City, Missouri

July 17, 1981 Approximately 2000 People Came for a Dance Competition
At 7:05 pm a large crack was heard and two walkways collapsed Leaving 114 Dead and Left over 200 injured

Gillum-Colaco International Inc. (G. C. E. Inc
Gillum-Colaco International Inc. (G.C.E. Inc.) Proposed Design for the Walkways wide flange beams were to be used on either side of the walkway which was hung from a box beam a clip angle was welded to the top of the box beam which connected to the flange beams with bolts one end of the walkway was welded to a fixed plate while the other end was supported by a sliding bearing each box beam of the walkway was supported by a washer and nut which was threaded onto the supporting rod

Proposed Design

The Revised Design one end of each support rod was attached to the atrium’s roof cross beams the bottom end went through the box beam where a washer and nut were threaded on the second rod was attached to the box beam 4" from the first rod additional rods suspended down to support the other levels in a similar manner

Actual Design

The Fourth Floor Connection

Reasons For Disaster Lack of Communication
Interpreting Preliminary Drawings as Finalized Drawing Insufficient Review of the Final Design

Walkway Collapse Timeline The project began in 1976 with Gillum-Colaco International Inc. (G.C.E. Inc.) as the consulting structural engineering firm. They were contracted in The construction on the hotel began in the spring of In December of 1978, Havens Steel Company entered the contract to fabricate and erect the atrium. The following February, Havens changed the design of the connection for the second and fourth floor walkways from a single to a double rod. During construction in October 1979, part of the atrium roof collapsed and an inspection team was brought in to investigate the collapse. G.C.E. vowed to review all the steel connections in the atrium. In July 1980, the hotel was open for business. On July 17, 1981 at 7:05 p.m., a loud crack was heard as the second and fourth floor walkways came crashing down to the ground level. There were about 2000 people gathered in the atrium for a dance contest. After the collapse, 114 people were dead and left more than 200 were injured.

Kansas City Hyatt Regency Hotel Main Reasons for Collapse
Walkway Collapse Main Reasons for Collapse The failure of the Hyatt Regency walkway was a combination of things. The most important cause was the design in the walkways. The proposed design of the walkways was: A wide flange beams that was used on either side of the walkway which hung from a box beam. A clip angle that was welded to the top of the box beam which connected the flange beams with bolts. One end of the walkway was welded to a fixed plate, whereas the other end was supported by a sliding bearing Each box beam of the walkway was supported by a washer and nut which was threaded onto the supporting rod. Due to disputes between G.C.E. and Havens, the design changed from a single to a double hanger rod, simply because Havens did not want to thread the entire rod in order to install the washer and nut.

Walkway Collapse The actual design consisted of: One end of each support rod was attached to the atrium's roof cross beams The bottom end of the rod went through the box beam where a washer and nut were threaded on The second rod was attached to the box beam four inches from the first rod Additional rods were suspended down to support the second level in a similar manner Due to the addition of another rod, the load on the nut connecting the fourth floor segment was increased. The original load for each hangar rod was to be 90kN, but the alteration increased the load to 181kN. The box beams were welded horizontally and therefore could not hold the weight of two walkways. During the collapse, the box beam split and the bottom rod pulled through the box beam resulting in the collapse. Another problem was the lack of communication between G.C.E. and Havens. The drawing prepared by G.C.E. were only preliminary sketches that Havens interpreted to be the finalized drawings. Another large error was G.C.E.'s failure to review the final design which would have allowed them to catch the error in increasing the load on the connections.

Walkway Collapse Who's to Blame? An investigation took place to determine the exact cause of the accident and who was responsible for the accident. The investigation determined that the flaw was contained in the design and the construction techniques were not at fault.The construction was sound according to the imperfect design. G.C.E was credited with the complete fault of the collapse of the walkways. These conclusions were arrived at by conducting an extensive investigation of the walkways. First, they determined how the walkways collapsed. The fourth floor collapsed first, directly onto the second floor, which in turn caused it to collapse. It was also determined that the design prints had been changed with G.C.E. approval. The investigation found out that both designs of the walkways were well below the required safety stress required by the Kansas City Building Code. The engineers at G.C.E. were found of gross negligence, misconduct and unprofessional conduct in the practice of engineering. Consequently, the engineers lost their licenses and many supporting firms went bankrupt. The results proved that engineers are held responsible for the public's safety in the design of their projects and must be held accountable if anything goes wrong.

Proposed walkway design Constructed Walkway
Kansas City Hyatt Regency Hotel Walkway Collapse Background Proposed walkway design Constructed Walkway

Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 49 – 88 Read pages As you read please answer feedback questions 1 – 4 on page 63. Look at figure 2.3 and read the supporting text. How did the variations between designed and constructed walkways cause the failure

Introduce Rocket Modeler

Scroll down the screen to the informative reading
Scroll down the screen to the informative reading. Read the first paragraph, then click design variables. Answer questions as you read…Click the safe button when finished Design variables

Study the illustration, read the 7 paragraphs and answer the questions related to rocket safety. When finished click the BACK button twice to return to the Design screen.

Engineering Design Research L10 Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 63 – 88 Objective: Prioritize Design Constraints to Avoid Conflict Between Economic, Ethical, Safety and Political Issues. DRILL: In engineering what are the differences between the physical system and the mathematical model of the system? (answered during section 3 reading today) Next slide

Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 63 – 88 Read pages As you read please answer feedback questions 2 on page 74 as your drill response Answer question 3 page 75 as a continuation in notes– 4 Read pages As you read please answer (in sentence form) feedback questions 1 & 2 on page 79 as a continuation in notes

NEWTON’S LAWS OF MOTION
Following are two of Newton’s three Laws of Motion, fill in the blanks with the key words. NEWTON’S LAWS OF MOTION LAW 1 : AN OBJECT REMAINS AT _____ OR MOVES WITH CONSTANT ____ IN A STRAIGHT LINE UNLESS ACTED ON BY AN OUTSIDE _____. LAW 2: THE ACCELERATION OF AN OBJECT OF CERTAIN _______ IS DETERMINED BY THE _______ OF THE FORCE ACTING AND THE DIRECTION IN WHICH IT ACTS.

LAW 1 : AN OBJECT REMAINS AT REST OR MOVES WITH CONSTANT SPEED IN A STRAIGHT LINE UNLESS ACTED ON BY AN OUTSIDE FORCE. LAW 2: THE ACCELERATION OF AN OBJECT OF CERTAIN MASS IS DETERMINED BY THE SIZE OF THE FORCE ACTING AND THE DIRECTION IN WHICH IT ACTS. IN YOUR “NOTES” SECTION COPY THE FOLLOWING: LAW 3: FOR EVERY THERE IS EQUAL AND _________ REACTION.

LAW 3: FOR EVERY ACTION THERE IS EQUAL AND OPPOSITE REACTION
LAW 3: FOR EVERY ACTION THERE IS EQUAL AND OPPOSITE REACTION. SO WHAT DOES THIS HAVE TO DO WITH ROCKETS? A ROCKET ENGINE IS A REACTION ENGINE. The CHEMICALS INSIDE THE ENGINE BURN WITH THE EXHAUST BEING FORCE THROUGH A SMALL OPENING AT THE END (ACTION). THE EXHAUST EXITING THE END CREATE A REACTIVE FORCE THAT PROPELS THE ROCKET UP (REACTION) ACTION REACTION FORWARD MOTION EXHAUST

LAW 2: THE ACCELERATION OF AN OBJECT OF CERTAIN MASS IS DETERMINED BY THE SIZE OF THE FORCE ACTING AND THE DIRECTION IN WHICH IT ACTS. So, which rocket do you think would travel further A or B…Why? B A ENGINE EXHAUST

LAW 1 : AN OBJECT REMAINS AT REST OR MOVES WITH CONSTANT SPEED IN A STRAIGHT LINE UNLESS ACTED ON BY AN OUTSIDE FORCE.

What are some generalizations you observed yesterday in design characteristics of a rocket achieving the greatest height? Using the Rocket Modeler program or the info packet titled ‘Rocket Principles’ and answer the two accompanying questions. Explain the importance of Center of pressure and Center of Gravity in rocket design. How can you determine CP and CG of your physical model?

Design a model rocket to achieve the greatest height using an A8-3 Engine. Be sure to fill in the Rocket design specs of tested rockets on Design sheets.

ROCKET DESIGN AND MODIFICATION CHALLENGE Following the specifications listed below design a rocket that will achieve the greatest height.. As you design better performing rockets you are to use the ‘Print Screen’ command to record your information on a Power Point Slide. SPECIFICATIONS Body Length = 16 – 33cm Body Diameter = 1.8cm Nose Cone = 4 – 12cm Fin Width = 1.5 – 5cm Fin Length = 2 – 6cm Fin Height = 0 – 6cm Rocket Engine = A8-3

Engineering Design Research L12 Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 49 – 88 Challenge & Rocket Modeler, Fundamental rocket design principles from Rocket Modeler Rocket Design Objective: Prioritize Design Constraints to Avoid Conflict Between Economic, Ethical, and Political Issues. DRILL: Explain how Economic, Political, and Ethical issues can arise in trying to create a car to meet the challenges of high gas prices and pollution concerns. What other issues might arise in the car design?

Design Requirements and Prioritizing Constraints Power Tool Safety – Band Saw, Drill Press, Lathe Objective: Demonstrate correct and safe power tool use as we participate in Safety demonstration DRILL: How can we use the construction of a prototype rocket to demonstrate safe tool use.

Use Lathe to ‘turn’ nose cone
How can we use the construction of a prototype rocket to demonstrate safe tool use. Use band saw to cut out silhouette of proposed rocket to determine center of pressure. Use Lathe to ‘turn’ nose cone Use drill press in construction of Engine Lug

Design Requirements and Prioritizing Constraints Text: Engineering & Technology Chapter 2 pp 49 – 88

Objective: Prioritize Design Constraints to Avoid Conflict Between Economic, Ethical, and Political Issues. DRILL: Explain how Economic, Political, and Ethical issues can arise in trying to create a car to meet the challenges of high gas prices and pollution concerns. What other issues might arise in the car design?

Objective: Identify significant events in evolution of human engineering as we read discuss technology and history. DRILL: Identify two historic engineers who lived in the 1400’s and made contributions that changed society

Design is the result of a formal, sequential process • Define the Problem • Brainstorm Possible Solutions • Research and Generate Ideas • Identify Criteria and Constraints • Explore Possibilities • Select an Approach • Develop a Design • Construct a Prototype • Test the Design • Refine the Design • Manufacture Final Product • Communicate Results

For cases dealing with design: consider the importance of a product, its viability, its marketability, and its substitutability from a managerial as well as engineering perspective. The following questions should be addressed in these cases. -- Is this product essential? -- Is designing, manufacturing or marketing this product this way the only option? -- What are the economic, political and ethical side effects of this product? -- What are the environmental side effects of this product? -- What tradeoffs were made between economical, ethical, political or environmental issues? -- Is there another viable approach to this design that would more effectively address the resulting political, ethical, and economic issues?

Complete ‘Reverse Engineering Models’ assignment (described at bottom of chapter 13 handout). Be sure to re-assemble model with all parts in correct location. Accurately sketch a diagram of all of the parts and illustrate how they fit together to make the device operate (exploded view). List at least three ways you feel the device could be improved.

Engineering Design Research REVERSE ENGINEERING
Objective: Analyze a common object as we de-construct then reconstruct the object. Propose modifications that might be applied to improve design. DRILL: Identify three separate engineering fields (example: structural engineer)

Complete ‘Reverse Engineering Models’ assignment (described at bottom of chapter 13 handout). Be sure to re-assemble model with all parts in correct location. Accurately sketch a diagram of all of the parts and illustrate how they fit together to make the device operate (exploded view). List at least three ways you feel the device could be improved.

Text: Engineering Your Future
Chapter – Engineering Design pp. 351 – 377 Answer handout questions then complete ‘Reverse Engineering Models’ assignment (described at bottom of handout). Be sure to take notes (sketch or written) documenting method of taking object apart so object can be re-assembled.

Engineering Design and Research

Similar presentations

Presentation on theme: "Engineering Design and Research"— Presentation transcript:

Similar presentations

About project

Feedback

Log in

Auth with social network:

Engineering Design and Research

Similar presentations

Presentation on theme: "Engineering Design and Research"— Presentation transcript:

Similar presentations

About project

Feedback