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.

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.

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.

Theory and Applications of Aerodynamics for Ground Vehicles

Theory and Applications of Aerodynamics for Ground Vehicles
Author: T Yomi Obidi
Publisher: SAE International
Total Pages: 290
Release: 2014-03-20
Genre: Technology & Engineering
ISBN: 076808105X
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This book provides an introduction to ground vehicle aerodynamics and methodically guides the reader through the various aspects of the subject. Those needing specific information or a refresher can easily jump to the material of interest. There is a particular emphasis on various vehicle types (passenger cars, trucks, trains, motorcycles, race cars, etc.). However, the book is focused on cars and trucks, which are the most common vehicles in the speed range in which the study of ground vehicle aerodynamics is beneficial. Readers will gain a fundamental understanding of the topic, which will help them design vehicles that have improved aerodynamics; this will lead to better fuel efficiency, improved performance, and increased passenger comfort. The author’s basic approach to the presentation of the material is complemented with review questions, application questions, exercises, and suggested projects at the end of most of the chapters, which helps the reader apply the information presented, either in the classroom or for self-study. Aside from offering a solid understanding of ground vehicle aerodynamics, the book also offers more thorough study of several key topics. One such topic is car-truck interaction, when one vehicle (usually the smaller one) is overtaking the other. There is a direct and instant benefit in terms of safety on the highway from understanding the forces at play when one vehicle passes the other in the same direction and sense. Chapters examine: • Drag • Noise and vehicle soiling • Wind tunnels and road/track testing • Numerical methods • Vehicle stability and control • Vehicle sectional design • Large vehicles: trucks, trailers, buses, trains • Severe service and off-road vehicles • Race cars and convertibles • Motorcycles • Concept vehicles

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.

Road Vehicle Aerodynamic Design

Road Vehicle Aerodynamic Design
Author: R. H. Barnard
Publisher:
Total Pages: 0
Release: 2009
Genre: Automobiles
ISBN: 9780954073473
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A comprehensive introduction for students, practising automotive engineers and designers, and anyone with a general interest in the subject. Intended to be affordable by students. Unnecessary details or highly vehicle-specific information has been omitted, but a comprehensive list of references is given, usually with a summary.

Optimising Car Performance Modifications

Optimising Car Performance Modifications
Author: Julian Edgar
Publisher: Veloce Publishing Ltd
Total Pages: 211
Release: 2022-01-11
Genre: Transportation
ISBN: 1787118274
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This highly practical and useful book covers brilliant techniques that take the guesswork out of performance modification. Using just some low-cost tools, you can easily measure the flow restriction of your car’s intake and exhaust. It’s like having a huge flow-bench always available. By making some simple on-road measurements, you can plot the shape of the engine’s power and torque curves – no dyno needed. This allows you to not only see if performance modifications to the engine are improving power, but also see where in the rev range those changes are occurring. Assess the worth of cams, a larger turbo, changed boost control or altered engine management mapping. But the book doesn’t stop there – it also shows you how to measure your car’s aerodynamics, seeing if at speed your car is developing lift or downforce. Want to make a rear wing work well? Test the angle at which downforce is greatest. You can also test the aerodynamic airflow through oil coolers, intercoolers and radiators. Interested in improving your suspension? By using a low-cost app and a smartphone, you can accurately measure suspension behaviour. If you want a practical, hands-on book that will immediately save you money, show where modifications are most needed, and can be used to assess performance outcomes, this is the book for you. The author is an enthusiastic hands-on modifier who performs all work on his cars himself in his home workshop. He has been testing car modifications on his own road cars for more than 25 years.

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.

AERODYNAMIC TESTING OF ROAD VEHICLES - OPEN THROAT WIND TUNNEL ADJUSTMENT

AERODYNAMIC TESTING OF ROAD VEHICLES - OPEN THROAT WIND TUNNEL ADJUSTMENT
Author: Road Vehicle Aerodynamics Forum Committee
Publisher:
Total Pages: 0
Release: 1994
Genre:
ISBN:
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As a simulation of road driving, wind tunnel testing of full-size vehicles produces certain errors in the aerodynamic forces, aerodynamic moments, and surface pressures. The magnitude of these errors, in general, depends on the following: aFlow quality bDetermination of the reference dynamic pressure cWind tunnel floor boundary layer dTest section geometry and position of the car within that geometry eShape of the vehicle fBlockage ratio: The ratio of the cross-sectional area of the vehicle to the cross-sectional area of the wind tunnel nozzle gWheel rotation hInternal flow in the modelThe SAE Standards Committee, Open Throat Wind Tunnel Adjustments had as a goal to document the knowledge of the influence of model interference on wind tunnel test results for automotive open jet wind tunnels. This document contains the following information related to this subject: aDesign data of open throat wind tunnels bA summary of published and unpublished test data cDocumentation and theoretical explanation of various blockage correction procedures for automotive tests dCritical evaluation of blockage correction procedures, especially in relation to other influences, such as test section geometry, position of the car, floor boundary layer, etc. eRecommendation of a calibration procedure to determine the effect of blockage and other influences in each individual wind tunnelAn initial goal of the committee, to recommend a well proven correction procedure for automotive open jet wind tunnels based on blockage theory (Figure 1), could not be established at this time. The reason is that, besides blockage, other factors, such as test section geometry, are at least as influential as pure blockage. As these influential parameters are wind tunnel specific, a general valid adjustment procedure is presently not available. The only change to this document was the title.