# Courses tagged with "Engineering" (16)

This course covers the physics, concepts, theories, and models underlying the discipline of aerodynamics. A general theme is the technique of velocity field representation and modeling via source and vorticity fields, and via their sheet, filament, or point-singularity idealizations.

The intent is to instill an intuitive feel for aerodynamic flowfield behavior, and to provide the basis of aerodynamic force analysis, drag decomposition, flow interference estimation, and many other important applications. A few computational methods are covered, primarily to give additional insight into flow behavior, and to identify the primary aerodynamic forces on maneuvering aircraft. A short overview of flight dynamics is also presented.

Before your course starts, try the new edX Demo where you can explore the fun, interactive learning environment and virtual labs. Learn more.

**FAQ**

**Is there a required textbook?**

You do not need to buy a textbook. All material is included in the edX course and is viewable online. This includes a full textbook in PDF form. If you would like to buy a print copy of the textbook, a mail-order service will be provided.

**Can I still register after the start date?**

You can register at any time, but you will not get credit for any assignments that are past due.

**How are grades assigned?**

Grades are made out of four parts: simple, multiple-choice "Concept Questions " completed during lectures; weekly homework assignments; and two exams, one at the midpoint and one at the end of the course.

**How does this course use video? Do I need to watch the lectures live?**

Video lectures as well as worked problems will be available and you can watch these at your leisure. Homework assignments and exams, however, will have due dates.

**Will the text of the lectures be available?**

Yes, transcripts of the course will be made available.

**Will the material be made available to anyone registered for this course?**

Yes, all the material will be made available to all students.

**What are the prerequisites?**

The student is expected to be well-versed in basic mechanics, vector calculus, and basic differential equations. Good familiarity with basic fluid mechanics concepts (pressure, density, velocity, stress, etc.) is expected, similar to the content in 16.101x (however, 16.101x is not a requirement). If you do not know these subjects beforehand, following the class material will be extremely difficult. We do not check students for prerequisites, so you are certainly allowed to try.

**Who can register for this course?**

Unfortunately, learners from Iran, Sudan, Cuba and the Crimea region of Ukraine will not be able to register for this course at the present time. While edX has received a license from the U.S. Office of Foreign Assets Control (OFAC) to offer courses to learners from Iran and Sudan our license does not cover this course. Separately, EdX has applied for a license to offer courses to learners in the Crimea region of Ukraine, but we are awaiting a determination from OFAC on that application. We are deeply sorry the U.S. government has determined that we have to block these learners, and we are working diligently to rectify this situation as soon as possible.

A flow is called hypersonic if the Mach number is greater than 5. This means that the flow speed is more than five times the speed of sound. In air at room temperature, the speed of sound is around 340 m/s, so a Mach 5 flow would have a flow speed of 1.7 km/s or just over 6,000 km/h. When a rocket launches a satellite into earth orbit, when a probe enters the atmosphere of another planet or when an aircraft is propelled by a supersonic combustion ramjet engine (a scramjet), hypersonic flows are encountered. Hypersonics – from Shock Waves to Scramjets introduces the basic concepts associated with flight at speeds greater than Mach 5 and takes students to the stage where they can analyse the performance of a scramjet engine that might be used in a future access-to-space system.

This aerodynamics course focuses on the study of the flow of air about a body, and the “body” will be an airplane, but many of the concepts explored are relevant to a wide variety of applications from sailboats to automobiles to birds. Learners completing this aerodynamics course will gain a fundamental understanding of concepts and models used to aerodynamically analyze and design subsonic, transonic, and supersonic aircraft.

While the course is an introduction to aerodynamics, it is an advanced subject typically taken as a third or fourth year undergraduate subject in aerospace engineering.

This course provides an overview of and introduction to the fundamentals of aeronautics, using the history of aviation as a story line. The course uses examples from the very beginning of aviation (the Montgolfier brothers’ balloon flight in 1783 and the Wright brothers’ heavier-than-air flight in 1903) and continues all the way through to the current Airbus A380 and future aircraft. During this trajectory three major topics are discussed: aeronautics, aerodynamics and flight mechanics.

Lectures are frequently accompanied by related exercises and demonstrations. The course also incorporates (design) challenges/competitions, based on the knowledge obtained through the lectures.

*LICENSE
The course materials of this course are Copyright Delft University of Technology and are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike (CC-BY-NC-SA) 4.0 International License.*

In this course, you will learn how to characterize the energy state of a system and the mechanisms for transferring energy from one system to another. These are the tools necessary to understand stationary and transportation power systems from small scale, like batteries, to large scale, like nuclear power plants.

Ce cours est une première introduction à la mécanique des fluides. Nous allons aborder tout d'abord les propriétés physiques des fluides : les états de la matière et la notion de viscosité. Un chapitre sera dédié à la tension de surface et à la capillarité. Nous introduirons ensuite le concept de similitude et l’utilisation des nombres adimensionnels. Nous allons alors considérer la statique des fluides à travers la loi de l'hydrostatique. La dynamique des fluides sera abordée en premier lieu par la cinématique. Ensuite, nous traiterons des équations de bilan avec notamment une application du théorème de conservation de l’énergie cinétique : le théorème de Bernoulli. Dans le dernier, nous montrerons que ce théorème relativement simple permet d’expliquer et de calculer des écoulements tels que ceux observés dans les rivières. Les vidéos du cours seront enrichies de vidéos d’expériences qui illustreront les concepts clés et par des quiz pour tester votre intuition et vos connaissances. Le dernier module vous permettra de piloter à distance une expérience d'hydraulique qui a lieu dans les laboratoires de l'EPFL.

This course is presented in French.

Mechanics ReView is a second look at introductory Newtonian Mechanics. It will give you a unified overview of mechanics that will dramatically increase your problem-solving ability. It is open to all students who meet the prerequisites (see right), but is especially designed for teachers and students who want to improve their existing understanding of mechanics.

Newtonian mechanics is the study of how forces change the motion of objects. This course begins with force, and moves on to straight-line motion, momentum, mechanical energy, rotational motion, angular momentum, and harmonic oscillators. Optional units include planetary orbits and a unit whose problems require multiple concepts to be applied to obtain one solution.

NOTE: New Section “Problem-solving Pedagogy”

We have developed a special approach to organizing the physics content knowledge and for applying it when solving problems. This approach is called “Modeling Applied to Problem Solving” and has been researched carefully and has proven effectiveness for improving students’ performance in a later physics course on Electricity and Magnetism.

If you are a teacher looking to improve your knowledge of mechanics, or to learn new approaches to teach your students, we encourage you to sign up in the special teacher section featuring a discussion forum for teachers to discuss teaching ideas and techniques related to the topics discussed in this course. To join these discussions, verify yourself as a teacher, and we will sign you up in the teacher forum.

Note that this forum is exclusively reserved for teachers, so please do not register if you are not a teacher.

Teachers in the United States, and especially in Massachusetts, can receive extra benefit from this course. We offer Professional Development Points (PDPs) at no charge to teachers in Massachusetts who complete our course. If you are in a different state, we instead offer Continuing Education Units through the American Association of Physics Teachers. There is a fee for this certificate.

Note: Taking this Course Involves Using Some Experimental Materials

The RELATE group that authors and administers this course is an education research group, dedicated to understanding and improving education, especially online. We showed that 8.MReV generated slightly more conceptual learning than a conventionally taught on-campus course - but we were unable to find exactly what caused this learning. (So far this is the only published measurement of learning in a MOOC). This summer we will be comparing learning from different types of online activities that will be administerered to randomly assigned sub-groups of our students. At certain points in the course, new vs. previously used sequences of activities will be assigned to different groups. We will then use common questions to compare the amount learned. Which group receives the new activities will be switched so that neither group will have all new activities.

Our experimental protocol has been approved by the MIT Committee on Use of Human Subjects. As part of this approval we have the obligation to inform you about these experiments and to assure you that:

- We will not divulge any information about you that may be identified as yours personally (e.g. a discussion post showing your user name).
- The grade for obtaining a certificate will be adjusted downwards (from 60%) to compensate if one group has harder materials.

Note: By clicking on the registration button, you indicate that you understand that everyone who participates in this course is randomly assigned to one of the groups described above.

Welcome, and we hope you will both learn from and enjoy this course.

**FAQs**

Is there a required textbook?

You do not need to buy a textbook. All material is included in this edX course and is viewable online. If you would like to use a textbook with the course (for example, as a reference), most calculus-level books are suitable. Introductory physics books by Young and Freedman, Halliday and Resnick, or Knight are all appropriate (and older editions are fine).

What if I take a vacation?

The course schedule is designed with this in mind! Course contents are released four weeks ahead of the deadline, so even if you have a four-week vacation, you do not need to miss any deadlines and can still complete all of the material.

Will I get a certficiate?

Yes! This course awards certificates to all who satisfactorily complete the required portion of the course.

How are grades assigned?

There are three parts of the course that are worth points: Checkpoint problems that are folded in with the reading, Homework problems that come at the end of each unit, and Quizzes that are at the end of every 1-2 units. Each is worth a varying number of points, and you will not have to do every problem.

The course consists of 11 required units and three optional units. You do not need to complete the optional units in order to receive a certificate.

There is no final exam.

Learn about novel sensing tools that make use of nanotechnology to screen, detect and monitor various events in personal or professional life. Together, we will lay the groundwork for infinite innovative applications, starting from diagnosis and treatments of diseases, continuing with quality control of goods and environmental aspects, and ending with monitoring security issues.

Nanotechnology is an emerging area that engages almost every technical discipline – from chemistry to computer science – in the study and application of extremely tiny materials. This short course allows any technically savvy person to go one layer beyond the surface of this broad topic to see the real substance behind the very small.

**Course Summary**

In this first part of Vehicle Dynamics, we illuminate the longitudinal dynamic aspects of vehicles.

**Clear and brief:** acceleration and braking.

**In Detail:** After an introduction, we will look at driving resistances and slip, explain the demand of power and limits of a car, then clarify the needs for a clutch and gears and look at the rear and front weights during acceleration and braking. The course will be finished by two applications from automotive mechatronics.

**What will I learn?**

By the end of the course you will …

- understand basic principles of accelerating and braking a car.
- know the driving resistances and their influences on vehicle dynamics.
- understand the discrepancy between demands and limits of powertrain.
- understand the necessity of gears and clutch.
- understand the correlation between braking, wheel load and recovery of energy.
- be able to calculate simple properties of a car.

**What do I have to know?**

Some basic understanding of the following subjects will help you successfully participate in this course: Algebra; Trigonometric Functions; Differential Calculus; Linear Algebra; Vectors; Coordinate Systems; Force, Torque, Equilibrium; Mass, Center of Gravity, Moment of Inertia; Method of Sections, Friction, Newton's Law, (Lagrange's Equation)

**Course structure**

**This course has a total of 12 chapters, and the topics for each chapter are the following:**

#### Chapter 1: Preliminaries

#### Chapter 2: Introduction and Rolling Resistance

#### Chapter 3: Resistances: Grading, Acceleration, Aerodynamic Drag

#### Chapter 4: Real and ideal characteristic maps

#### Chapter 5: Approximation of the ideal map: Clutch and transmission

#### Chapter 6: Driving performance and axle loads

#### Chapter 7: ABS: Anti-lock Braking System

#### Chapter 8: ACC

#### Chapter 9: Homework Solutions Chapters 1 -3

#### Chapter 10: Homework Solutions Chapter 4 - 5

#### Chapter 11: Homework Solutions Chapter 6 - 8

#### Chapter 12: Solution of the exam

**Course Summary**

In this second part of Vehicle Dynamics, we will illuminate the lateral dynamic aspects of vehicles.

**Clear and brief:** the cornering of a car.

**In Detail:** We will start with a simple single-track model and then describe the slip angle of a wheel. The slip angle results in cornering forces, which are essential for understanding lateral dynamics. After that, we will look at the dependency between longitudinal and lateral forces using Kamm’s circle and Krempel’s diagram. Then we will investigate steady state cornering, stability and the influence of different weight distributions between inner and outer side wheels of the car. The course will finish with two applications from automotive mechatronics.

**What will I learn?**

At the end of the course you will …

- understand basic principles of cornering of a car.
- know slip angle and cornering forces.
- understand the single track model.
- understand the steady state cornering, stability and the influence of different weight distribution between inner and outer side of the car.
- be able to calculate simple properties of a car.

**What do I have to know?**

Some basic understanding of the following subjects will help you successfully participate in this course:

Algebra; Trigonometric Functions; Differential Calculus; Linear Algebra; Vectors; Coordinate Systems; Force, Torque, Equilibrium; Mass, Center of Gravity, Moment of Inertia; Method of Sections, Friction, Newton's Law, (Lagrange's Equation)

**Course structure**

**This course has a total of 10 chapters, and the topics for each chapter are the following:**

#### Chapter 1: Preliminaries

#### Chapter 2: Single-Track Model

#### Chapter 3: Tyre side slip

#### Chapter 4: Steady state cornering

#### Chapter 5: Solution of linear single track model

#### Chapter 6: Stability and step steer

#### Chapter 7: Wheelload transfer

#### Chapter 8: Suspension systems

#### Chapter 9: Active lateral systems

#### Chapter 10: Solutions Homework: Part 1

#### Chapter 11: Solutions Homework: Part 2

**Course Summary**

In this third part of Vehicle Dynamics, we will illuminate the vertical dynamic aspects of vehicles. In short, we will describe the elements involved when a car drives on a bumpy or rough street.

We will start with a survey of suspensions and springs and dampers. After this, we will explain the description of rough streets and give an introduction to Fourier integrals. Next, we will take a closer look at vertical models. In the last fundamental part of the course, we will describe the conflict between driving safety and comfort. The course will be finished with two applications from automotive mechatronics.

**What will I learn?**

At the end of the course you will …

- know different kinds of suspensions, springs and dampers.
- know the description of rough and bumpy streets.
- understand the Fourier integral.
- understand the conflict between driving safety and comfort.
- be able to calculate simple properties of a car.

**What do I have to know?**

Some basic understanding of the following subjects will help you successfully participate in this course:

Algebra; Trigonometric Functions; Differential Calculus; Linear Algebra; Vectors; Coordinate Systems; Force, Torque, Equilibrium; Mass, Center of Gravity, Moment of Inertia; Method of Sections, Friction, Newton's Law, (Lagrange's Equation)

**Course structure**

**This course has a total of 11 chapters, and the topics for each chapter are the following:**