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Car Aerodynamic Testing for Road and Track - 2nd Edition

Car Aerodynamic Testing for Road and Track - 2nd Edition
Author: Julian Edgar
Publisher:
Total Pages: 70
Release: 2021-03-08
Genre:
ISBN:
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At last - a book that shows you how to test the aerodynamics of your road or track car. Measure downforce, lift and drag - all with low cost and easily obtained equipment. See airflow behaviour, measure aerodynamic pressures causing lift and drag, and measure airflow speed - even under the car. No more guessing, using rules of thumb or just copying what others have done. Develop undertrays and diffusers that work, set wing angles to give the right results, and optimise drag. Practical, down to earth and low in cost, the techniques covered in this book will revolutionize how you modify the aero of your road or track car. This is the second edition - twice as large as the first edition, with many more examples and new chapters.

Car Aerodynamic Testing for Road and Track

Car Aerodynamic Testing for Road and Track
Author: Julian Edgar
Publisher:
Total Pages: 36
Release: 2020-09-24
Genre:
ISBN:
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At last - a book that shows you how to test the aerodynamics of your road or track car. Measure downforce, lift and drag - all with low cost and easily obtained equipment. See airflow behavior, measure aerodynamic pressures causing lift and drag, and measure airflow speed - even under the car. No more guessing, using rules of thumb or just copying what others have done. Develop undertrays and diffusers that work, set wing angles to give the right results, and optimise drag.Practical, down to earth and low in cost, the techniques covered in this book will revolutionize how you modify the aero of your road or track car.

Amateur Car Aerodynamics Sourcebook

Amateur Car Aerodynamics Sourcebook
Author: Julian Edgar
Publisher: Createspace Independent Publishing Platform
Total Pages: 0
Release: 2013-03-22
Genre: Automobiles
ISBN: 9781482735253
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At last - a book for those who like to modify the aerodynamics of their road cars!In this book author Julian Edgar explores a host of practical and low-cost techniques that you can do yourself without spending a lot of money or needing special facilities. Section 1 introduces aerodynamic drag and lift. The language is simple and straightforward - but still includes concepts such as drag co-efficients, lift co-efficients and the different types of drag that affect road cars. Section 2 is devoted to aerodynamic testing - directly measuring aerodynamic pressures, and seeing airflow patterns by the use of on-road wool-tuft testing. Section 3, the largest part in the book, covers aerodynamic modification. Fitting vortex generators, testing different undertrays, reducing drag, using turning vanes in intercooler ducting - all are covered in detail. In addition, techniques are described for reducing wind noise, building an effective engine intake that breathes high-pressure cold air, siting bonnet vents in the correct location, and testing airflow through intercoolers. With nearly 300 full-colour photos and diagrams, this book is practical and down to earth - and uses techniques able to be carried out on the road.

Modifying the Aerodynamics of Your Road Car

Modifying the Aerodynamics of Your Road Car
Author: Julian Edgar
Publisher: Veloce Publishing Ltd
Total Pages: 830
Release: 2022-01-06
Genre: Transportation
ISBN: 1787118231
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This unique handbook assumes no starting knowledge of vehicle aerodynamics. It begins with simple ideas and finishes with sophisticated and effective aerodynamic modifications that work. Three major chapters cover on-road testing techniques that give you all the information you need to decide what modifications you should make – and, after you’ve made them, how well they work. Low-cost techniques allow you to visualise the patterns of airflow over your car so that you can actually see the problem areas that need improvement. Uniquely, you’re also shown how to measure aerodynamic pressures, so you can determine which body surfaces are creating lift, drag and downforce. Want to work out where a wing should be placed? On-road testing to find that out is covered as well. The book also shows you how to measure downforce to see if that wing is actually working! If you wish to reduce drag, more than ten different areas are covered. Reducing frontal area, lowering cooling system drag, optimising vehicle ride height and rake, reducing the strength of the wake, achieving clean airflow separation and optimising wheel designs – they’re all covered using the latest research findings. And if you’re a performance driver, there’s a major chapter devoted to reducing lift and improving stability. This chapter includes the design and development of undertrays and diffusers, wings and spoilers. The example car developed measurable downforce when fitted with an undertray and rear diffuser, something that transformed its on-road handling. The author has been writing about the aerodynamics of road cars for more than 25 years. He is also an experienced and proficient car modifier who has performed numerous aerodynamic modifications and upgrades to his own cars. The book’s technical consultant, RH Barnard, is an acknowledged world leading automotive aerodynamicist. If you want a practical, hands-on guide that demystifies and explains car aerodynamics, and shows you how to make effective aerodynamic modifications to your car, this book is for you.

Race Car Aerodynamics

Race Car Aerodynamics
Author: J Katz
Publisher: Robert Bentley, Incorporated
Total Pages: 280
Release: 1996-03-08
Genre: Transportation
ISBN: 9780837601427
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The first book to summarize the secrets of the rapidly developing field of high-speed vehicle design. From F1 to Indy Car, Drag and Sedan racing, this book provides clear explanations for engineers who want to improve their design skills and enthusiasts who simply want to understand how their favorite race cars go fast. Explains how aerodynamics win races, why downforce is more important than streamlining and drag reduction, designing wings and venturis, plus wind tunnel designs and more.

AERODYNAMIC TESTING OF ROAD VEHICLESTESTING METHODS AND PROCEDURES

AERODYNAMIC TESTING OF ROAD VEHICLESTESTING METHODS AND PROCEDURES
Author: Road Vehicle Aerodynamics Forum Committee
Publisher:
Total Pages: 0
Release: 1993
Genre:
ISBN:
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The scope of this SAE Information Report is confined to wind-tunnel testing, although it is recognized that many aspects of the aerodynamic characteristics of road vehicles can be investigated in other test facilities (such as water-tanks) or, especially, on the road. For example, coastdown testing is often used to determine aerodynamic drag (either in isolation or as part of the total resistance), and artificial gust generators are used to investigate the sensitivity of vehicles to cross-wind gusts.Also excluded from the present Report are climatic wind-tunnel tests of road vehicles, which are defined in more detail in Section 3.The Report covers the aerodynamic requirements of a wind-tunnel for automotive testing, together with the facility equipment needed and the requirements affecting the test vehicle or model. The test methods and procedures described here include those for six-component force measurements and measurements of pressures and velocities both on the vehicle/model surface and in the surrounding flow-field.Flow visualization techniques are outlined, with reference to the detailed coverage in a related SAE Information Report (2). In addition, the reduction, analysis, and presentation of wind-tunnel data are considered, with further references to associated SAE Information Reports (3,4) on corrections to be applied for wind-tunnel blockage effects. Finally, methods are discussed for the validation of the wind-tunnel data, e.g., by tunnel-to-road correlation studies.As already indicated, this document has been prepared in conjunction with a number of other SAE Information Reports and Recommended Practices (15), each of which provides greater detail than is given here on its particular aspect of automotive aerodynamic testing.

Aerodynamics of Road Vehicles

Aerodynamics of Road Vehicles
Author: Wolf-Heinrich Hucho
Publisher: Elsevier
Total Pages: 577
Release: 2013-10-22
Genre: Technology & Engineering
ISBN: 1483102076
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Aerodynamics of Road Vehicles details the aerodynamics of passenger cars, commercial vehicles, sports cars, and race cars; their external flow field; as well as their internal flow field. The book, after giving an introduction to automobile aerodynamics and some fundamentals of fluid mechanics, covers topics such as the performance and aerodynamics of different kinds of vehicles, as well as test techniques for their aerodynamics. The book also covers other concepts related to automobiles such as cooling systems and ventilations for vehicles. The text is recommended for mechanical engineers and phycisists in the automobile industry who would like to understand more about aerodynamics of motor vehicles and its importance on the field of road safety and automobile production.

A Century of Car Aerodynamics

A Century of Car Aerodynamics
Author: Julian Edgar
Publisher: Independently Published
Total Pages: 218
Release: 2021-05-31
Genre: Automobiles
ISBN:
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Covering every decade from the 1920s until now, this book reveals an incredible array of fascinating and advanced aerodynamic designs - cars shaped to cheat the wind or stick to the road. Meet an automotive inventor so weird he'd taken a vow of silence and had to communicate by writing notes... discover one of the lowest-drag cooling systems ever used in a production car... and see how the science and art of car aerodynamics have progressed over the last 100 years. Written with the full cooperation of car aerodynamicists from Porsche, Tesla, General Motors and Volkswagen, the coverage is detailed and accurate. Over 60 individual cars are described - from the tiny Fiat Uno to the mighty Bluebird Land Speed Record car. Learn about wings and spoilers, the Kamm tail and how today's low-drag electric cars are being developed. Be amazed that some cars built over 80 years ago have better aerodynamic figures than many current cars. See rare concept cars from Mercedes, Ford and Chrysler. Researched on three continents and containing more than 450 photos, diagrams and graphs, this book will forever change how you view car aerodynamics. "Someone once said that to know where you are going you need to know where you have come from. Julian Edgar's new book provides car aerodynamicists with a vivid and detailed understanding of how we got here over the past 100 years." Jeff Howell, Visiting Professor Loughborough University and former head of Aerodynamics at Rover, Jaguar Land Rover and Tata Motors European Technical Centre. "This book takes you on a fascinating and engrossing journey through the history of automotive aerodynamics, highlighting notable milestones in learning and technology, but also bringing real humanity to some of the illustrious names of the field, and adding illuminating context to their work." Rob Palin, lead aerodynamicist on the Tesla Model S "A fascinating and well-researched trip through history that will expand the understanding of anyone interested in vehicle aerodynamics." Jon Young, car aerodynamics enthusiast.

Aerodynamic Testing of Road Vehicles - Testing Methods and Procedures

Aerodynamic Testing of Road Vehicles - Testing Methods and Procedures
Author: Road Vehicle Aerodynamics Forum Committee
Publisher:
Total Pages: 0
Release: 2016
Genre:
ISBN:
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The scope of this SAE Information Report is confined to wind-tunnel testing, although it is recognized that many aspects of the aerodynamic characteristics of road vehicles can be investigated in other test facilities (such as water-tanks) or, especially, on the road. For example, coastdown testing is often used to determine aerodynamic drag (either in isolation or as part of the total resistance), and artificial gust generators are used to investigate the sensitivity of vehicles to cross-wind gusts.Also excluded from the present Report are climatic wind-tunnel tests of road vehicles, which are defined in more detail in Section 3.The Report covers the aerodynamic requirements of a wind-tunnel for automotive testing, together with the facility equipment needed and the requirements affecting the test vehicle or model. The test methods and procedures described here include those for six-component force measurements and measurements of pressures and velocities both on the vehicle/model surface and in the surrounding flow-field.Flow visualization techniques are outlined, with reference to the detailed coverage in a related SAE Information Report (2). In addition, the reduction, analysis, and presentation of wind-tunnel data are considered, with further references to associated SAE Information Reports (3,4) on corrections to be applied for wind-tunnel blockage effects. Finally, methods are discussed for the validation of the wind-tunnel data, e.g., by tunnel-to-road correlation studies.As already indicated, this document has been prepared in conjunction with a number of other SAE Information Reports and Recommended Practices (1-5), each of which provides greater detail than is given here on its particular aspect of automotive aerodynamic testing. Much of the information presented in this document is mature and unlikely to change in the foreseeable future. The remainder - relating particularly to moving ground simulation and blockage correction techniques - is nevertheless judged by the Road Vehicle Aerodynamics Committee to be of historical significance. To supplement it contents, users are encouraged to consult more recent revisions of J1252, J1594, and J2881, as well as relevant SAE conference papers published since the 1993 issue of this document.

Aerodynamics of Road Vehicles

Aerodynamics of Road Vehicles
Author: Syed R. Ahmed
Publisher: SAE International
Total Pages: 918
Release: 1998
Genre: Technology & Engineering
ISBN: 9780768000290
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For years, engineers have turned to Aerodynamics of Road Vehicles as their 'bible' on this field. The fourth edition continues this tradition. Much of the material has been substantially revised, and new chapters on wind noise and motorcycles have been added. Aerodynamics of Road Vehicles thoroughly covers the fundamental principles that influence vehicle performance, handling, safety and comfort.

An excellent introduction to the topic for the novice or student and a useful refresher and reference for the expert, the book focuses on:

  • The fundamentals of fluid dynamics as related to vehicle aerodynamics
  • Specific experimental results
  • Design strategies, showing how existing individual results can be applied to specific problems
  • Development techniques, as related to different types of wind tunnels, on-road tests and numerical methods.

The aerodynamics of passenger cars, commercial vehicles, sports and race cars, and motorcycles are dealt with in detail. Related fields that are influenced by aerodynamics are also covered, including the effects of aerodynamics on fuel economy, directional stability, engine cooling, and passenger comfort.

Contents include:

  • Introduction to Automobile Aerodynamics (including a section on its history)
  • Some Fundamentals of Fluid Mechanics
  • Performance of Cars and Light Trucks
  • Aerodynamics Drag of Passenger Cars
  • Directional Stability
  • Function, Safety, and Comfort
  • Wind Noise
  • High-Performance Vehicles
  • Commercial Vehicles
  • Motorcycles
  • Engine Cooling
  • Heating, Ventilating, and Air Conditioning of Passenger Cars
  • Wind Tunnels
  • Measurement and Test Techniques
  • Computational Fluid Dynamics

Aerodynamics of Road Vehicles is an indispensable book for vehicle engineers, designers, researchers, and those working in government regulatory agencies. It is also an excellent introduction for students, and an insightful look for the enthusiast at why vehicles behave as they do. The book covers aerodynamic principles of: Passenger cars; Commercial vehicles; Sports and race car; Motorcycles. By reading this book, vehicle engineers and designers will be able to: Apply general rules to solve your own design problems; Develop test techniques and design strategies to maximise aerodynamic effectiveness. Car enthusiasts will gain an understanding of: Why vehicles behave as they do; The factors affecting vehicle performance, handling, safety, and comfort. Students will learn: The fundamentals of aerodynamics and its application in the 'real-world' of vehicle design; How to apply specific experimental results as general rules to solve design problems./P