# HomePage

## Front Page Articles

### CFD - Bluff Body - Splitter Preliminary

In this CFD Article I show how the Diffuser of a Race Car effects the Downforce and Balance.

## Introduction

Though Downforce is a big player in Race Car Performance, there are other factors that will determine cornering ability and ultimate handling. One of this is the Aerodynamic Balance of the Race Car. You may generate road crushing levels of Downforce, but if all that Downforce is on the Rear Tyres it won't do your lap time a whole lot of good. For the Race Car to go around the track as quickly as possible a good Aerodynamic Balance is required.

Other words used to describe a Splitter are Front Spoilers or Air Dams [1]

## Hypothesis

A very simple explanation for how Splitters work is that the high pressure that develops at the front of the Race Car is trapped by the Splitter, and this high pressure is applied to the top surface of the Splitter which pushes it down. In general and...

### CFD - Bluff Body - Ride Height

In this CFD Article I show how the Ride Height of a Race Car effects the amount of Downforce generated.

## Introduction

The majority of you landing on this page most likely already have an idea of the effect that Ride Height has on Downforce for an F1 or DSR / SR2 / LeMans Prototype Race Car. In general, the lower you can get the Underbody of the Race Car to the ground, the stronger the Ground Effect will be, and this will increase Downforce. It does however get a little more complicated than that. As you get closer to the ground, Ride Height Sensitivity increases. In addition, once the Race Car Underfloor gets too low the flow underneath can be blocked and not allow enough air through the diffuser. Once this happens, Downforce plummets.

The following article will talk about these implications in Formula One and other racing series such as DSR/SR2 and LeMans or other Formula Cars or Prototypes.

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### Engineering Example - Astronautics - Non Hohman LEO to LMO Transfer

In this Engineering Example we do a LEO to LMO Non Hohman Transfer finding total Delta V and Time.

Lets say we are sending an object to Mars, and it has already launched and is in a Parking Orbit over Earth at an altitude of 500km. This object is said to be in LEO, or Low Earth Orbit. We want to send it to Mars, for a Circular Orbit with an altitude of 500km.

The mission can't wait for a Hohman Transfer and there is extra fuel. The object is to intercept Mars at a True Anomaly of 165 degrees. Assume no Orbital Inclination.

What Delta V is required for the 1st and 2nd burn?

This will be pretty much Greek to most of my readers, I'll provide explanations of this for those that are interested later. I just wanted to start filling out some of my Engineering Examples List and this is a problem I did years ago.

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### Engineering Example - Mechanical Vibration - Undamped F1 Car Bouncing

In this Engineering Example I give you a Practice Homework Problem to help you study for your Mechanical Vibration Exam.

This Engineering Example is meant to give you some practice problem homework to help you study for your Engineering Exam. If you are in a Mechanical Vibration class, you'd be lucky if a problem this easy was on your Exam.

Lets say an F1 Race Car is pushed down 12mm, and released from a standstill. What is the equation of motion as a function of time? Ignore all friction. Here are your "givens".

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### Engineering Examples List - Branches - Practice Problems and Exam Study Help

These Engineering Examples are not meant to teach you the specific branch of Engineering/Science. Rather, they are meant to be used as Example Practice Problems to help when studying for your Engineering Exam.

## This will be a continually updated list of Engineering Examples.

These Engineering Examples are not meant to teach you the specific branch of Engineering/Science. Rather, they are meant to be used as Example Practice Problems to help when studying for your Engineering Exam.

It was my experience that too often Professors didn't provide enough worked examples and the book didn't have good examples or even any answers in the back of the book. It made me wonder if I actually knew the material or not since I had no way to check my answers, and I got the joy of finding out the truth either the day of the Engineering Exam, or a month later sometimes when the Professor finally got his TA to grade the Exams (don't get me wrong, some of my Profs were awesome).

Aerodynamics

• Drag on Flat Plate...

### Engineering Example - Thermodynamics - Conservation of Energy F1 Car Accelerating Uphill

In this Engineering Example I give you a Thermodynamics Practice Problem to help you study for your Engineering Exam.

The purpose of this Engineering Example is not to teach you Thermodynamics, but rather to give you a Thermodynamics Practice Problem to help you study for your Engineering Exam.

Lets say an F1 Race Car is Accelerating up a hill. The initial velocity is 30m/s, and after traveling 1000m, a hill of 50m height is climbed at which point the velocity is 95m/s. How much Power does the F1 Race Car have when ignoring all forms of Friction?

## Equations

### Engineering Example - Thermodynamics - Conservation of Energy F1 Car Out of Fuel

In this Engineering Example we'll cover the Conservation of Energy typical of an early Thermodynamics Course with a Race Car application.

The goal of this Engineering Example is not to teach you how the Conservation of Energy works. Rather, it is an Engineering Practice Problem Examle to help you study for your Engineering Exam coming up.

Lets say an F1 car runs out of fuel at the top of a hill. The speed right before the engine cut out was 30m/s, and the height of the hill is 35m. What is the speed of the F1 car at the bottom of the hill assuming no friction?

Try to solve it on your own. If you need the equations, you can click on the link. Once you think you know the final speed, check your answer below.

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### CFD - Why F1 Teams Change Wings For Monza - Angle of Attack

Following up on my first Monza F1 CFD Article, this article goes more in depth about Angle of Attack and Drag reduction for Race Cars.

My CFD Article on Why F1 Teams Change Wings for Monza was very popular and I got a request to go in to more detail, so in this F1 CFD Article I will focus on Angle of Attack and Drag Reduction.

In case you haven't read it yet, this old Article Covers the Coefficient of Lift itself, which is integral in the understanding of Induced Drag.

At Monza, the most important thing an F1 Team can do is to reduce Drag. You've seen this in articles by Matt Somers, Craig Scarborough, F1Technical, and others. One of the things the F1 Teams will do in search of Drag Reduction is reduce the Angle of Attack of their Wings. Particularly the Rear Wings on...

### Engineering Example - Dynamics - Acceleration of F1 Race Car

In this Engineering Example I'll give a Practice Problem to help study for your Engineering Exam involving an F1 car Accelerating.

Lots of Engineering Textbooks out there either don't give good Examples, don't have any answers in the back, or worst of all they have none of these. Here is a problem you can try to see if you are ready for your Engineering Exam or if you need to keep studying more. The goal of this Engineering Homework Practice Example isn't to teach you Engineering but rather to give you a problem to try and see if you get it right. This is just a study tool.

Say the F1 car can produce 9000N of forward force from the Engine. Also, the Drag force (counteracting the forward accelerating force) is [500t]N where "t" is the time in seconds (I totally made these numbers up).

This is just an example of F=ma.

How far has the F1 Race Car traveled in 5 seconds?

What is the forward acceleration at 5 seconds in G's?...