2.972 Understanding How Things Work

Instructor:  Martin Culpepper
Phone:
617 - 258 - 8541
E-mail:
mculpepp@mit.edu
Room:          35-125A
Time:            9am -12.00 then 1.30 - 4pm
Credit:          P/D/F
Units:            6 Units

-35% Final Report   -20% Class Participation/Field Trips   -25% Labs     -20% External Gear Pump/Motor Project

Session 1:    Jan. 4 - 15 M, T, W, R, F (FINIS!) Session 2:   Jan. 19-29 M, T, W, R, F
Understanding How Things Work is About:

Learning how some mechanical, hydraulic, and electro-mechanical devices operate.  In lab, you will (in groups) disassemble several machines, then model the operation of each device. Devices which are of particular interest to students, or impractical to disassemble in lab will be examined during field trips and through final reports.  Some of the skills/knowledge you will acquire in 2.972 are:

 Skill / Knowledge How Acquired Understanding of how many devices operate Taking a multiplicity of machines apart and using/running them Ability to learn/determine how things work Lectures and lab exercises on using functional requirements, geometry, structure, physics, and flow (material, information, energy, etc...) in machines/devices and using these to determine how machines work. Ability to explain how things work to others Explaining operation of machines you take apart in your lab write ups and to other students Ability to create, rotate, translate, and otherwise visualize 3D objects Sketching the machines/parts and solid modeling some of them Understanding fo the limiting and dominant physics of many machines These will be covered in the workshops and you will use them in lab Understanding of how geometry is linked to and affects performance Geometric modeling, mathematical modeling, and by making working model(s) Knowledge of some machine elements and how they are used You will see a wide variety of machine parts/elements in lab and on field trips
 Day Work Shop Lecture [mandatory] Workshop Hands On [mandatory] Lab [mandatory] 1Tuesday [19] ```Lecture: » Discuss Course » Questionnaire » Discuss prizes      » Functional Requirements & Design Parameters      » Understanding Geometry, Structure, Physics, and Flow » Sketching Basics      » Conversion Spread Sheet Tour:      » Waterjet and "Take Apart" Lab (9.45 am) Assignment: To Read/Research:      » Lab write ups, final reports, sample report      » Solid Modeling Introduction (under design tools)      » Spread Sheets (under design tools)      » Final projects via web, patents, library``` Workshop 1 Conversion Spreadsheet & Sketching Exercises Understanding: -Functional Requirements and Design Parameters These are important, because: 1. Spread Sheets: -We will be using spreadsheets to do the calculations in most of our labs. 2. Functional Requirements & Design Parameters: - It is important to realize the whats (functional requirements,) hows (design parameters,) their relation to each other, and their relation to design/performance in general. 3. Sketching: - You need to be able to sketch for others the geometry and structure of what you are trying to explain. - You need to to be able to visualize things in your head, flip them, rotate them, etc.. to understand and explain how many things work. - You will be sketching many parts from the machines you take apart. GO TO LIBRARY AND RESEARCH FINAL REPORTS 2Wednesday [20] Lecture:      » Basic Physics      » Limiting and Dominant Physics      » Understanding magnitudes (power, torque, force, size)      » SketchingAssignment: Solid Modeling tutorial      » Learning the SolidWorks™ Interface      » Extrude, Fillet, Shell, Basic Assemblies, Basic Drawings/Blue Prints Workshop 2 Sketching Exercise & Solid Modeling TutorialThese are important, because: 1. Physics & Flow: - You need to understand the physics of machines and trace the flow of power, energy, information, and material to understand how things work. 2. Solid Modeling - You must make the transition from the 2D world to the 3D world.  Building a CAD model forces your mind to think/see in 3D.   This is very  important.  It is very hard to understand/explain how many devices/systems work unless you can visualize them. By the end of the day you should have: 1. Chosen a final project and have sources 2. OK'd the subject of your final project with me. Lab #1 3Thursday [21] Lecture:      » Basic Manufacturing Processes      » BASIC GEAR PUMP DESIGNAssignment: Solid Modeling tutorial      » Revolve, Sweep, Loft      » Making DXF files for the Waterjet Tour:      » Aero-E Department Wind Tunnels (3.00 PM) Workshop 3 Solid Modeling Cont. & External Gear PumpsBy the end of the day you should have: 1. An external gear pump design spreadsheet 2. Outlined your final paper (Use Microsoft Word) Lab #1 cont. 4Friday [22] Lecture      » Solid Modeling & Design Intent Assignment      » Work on Gear Pump Design and Solid Model Tour:      » MIT MEMS Lab (2.00 PM) Workshop 4 Begin Solid Modeling of Gear PumpBy the end of the day you should have: 1. The dimensions you want for your pump 2. Handed in your 3 gear parameters 3. Talked to me about how you will solid model your pump (what is your design intent?) Lab #2 Weekend I will be available in 35-125A on Saturday and Sunday from 11 am to 5pm. You should finish designing your PUMPS 5Monday [25] Lecture: None! Assignment:      » Finish Gear Pump CAD Model Tour:      » MIT Physical Plant (1.30 PM) Workshop 5 Finish Design of Gear PumpBy the end of the day you should have: 1.  Handed in a rough draft (with rough sketches) for your final report (Use Microsoft Word) 2. Finished your GEAR PUMP CAD model Lab #2 cont. 6Tuesday [26} Lecture: Basic HTML and using Microsoft Word to make web pages Assignment:      » Make gear pump prints      » Make 1st corrections to final report Workshop 6 Make Gear Pump Prints, Correct Reports, and Convert Reports to HTMLHTML is important because you will: 1. Need to write your final report as web pages.  We will collate our reports and make the base pages of the MIT's How Things Work Web Site. 2. You will now be able to make your own web page and publish your resume and portfolio on-line. By the end of the day you should have: 1. Saved report as HTML and made 1st set of corrections 2. Finished drawings of your CAD model 3. Handed in DXF Files of your pump components Lab #3 7Wednesday [27] Lecture: None Assignment:      » Make 2nd corrections to final report      » Start CAD models/sketches for your report Workshop 7 Make Gear Pump Prints and 2nd Correction to Reports By the end of the day you should have: 1.  Made 2nd set of corrections to final report 2.  Started your CAD/VRML models/sketches for your final report (if applicable) Lab #3 cont. 8Thursday [28] Lecture: None Assignment:      » Make final corrections to final report      » Finish CAD models/sketches for your report      » Go to lab and take apart stuff if you are finished! Tour:      » Car Wash (~3.15 PM depending upon interest & time) Workshop 8 Make Final Corrections to Reports, Finish Report CAD/VRML Models, and Make Sure All is Well By the end of the day you should have: 1.  Made final corrections to final report 2.  Finished your CAD/VRML model/sketches for your final report (if applicable) Lab #4 9Friday [29] Lecture:      » Review Class      » Suggestions Assignment:      » Assemble gear pumps/motors      » Get ready for pump/motor contest!!!      » Make finishing touches on reports      » Hand in reports Workshop 9 Hand in Report, Build Pump, Have ContestBy the end of the day you should: 1.  Had fun at the contest 2.  Handed in your final projects by 4 p.m.!! 3.  There WON'T be exceptions! 4.  Gone home and Sleep, Party... Lab #4 cont. & Pump/Motor Contest!

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