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It provides power electronics engineers, designers and system integrators information on the engineering, design and integration of power electronics systems applications, such as battery-powered systems; consumers, commercial and industrial power electronics systems, and power systems for electrical and automotive transportation. Request Free!

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Power Electronics Technology

The books in the series have been designed for both independent and tutor assisted studies. For this reason they should prove particularly useful to the “self-starter” and to those wishing to update or upgrade their aircraft maintenance licence. Also, the series should prove a useful source of reference for those taking ab initiotraining programmes in JAR 147 (now ECAR Part-147) and FAR 147 approved organizations and those on related aeronautical engineering programmes in further and higher education establishments.

This book has primarily been written as one in a series of texts, designed to cover the essential knowledge base required by aircraft certifying mechanics, technicians and engineers engaged in engineering maintenance activities on commercial aircraft. In addition, this book should appeal to the members of the armed forces, and students attending training and educational establishments engaged in aircraft engineering maintenance and other related aircraft engineering learning programmes.

In this book we cover in detail the underpinning mathematics, physics, electrical and electronic fundamentals, and aerodynamics necessary to understand the function and operation of the complex technology used in modern aircraft. The book is arranged into four major sections:

1. • Introduction
2. • Scientific fundamentals
3. • Electrical and electronic fundamentals
4. • Fundamentals of aerodynamics

In the Introductory section you will find information on the nature of the aircraft maintenance industry, the types of job role that you can expect, the current methods used to train and educate you for such roles and information on the examinations system directly related to civil aviation maintenance engineering. In addition, you will find information on typical career progression routes, professional recognition, and the legislative framework and safety culture that is so much a part of our industry.

In the section on Scientific fundamentals we start by studying Module 1 of the JAR 66 (now ECAR Part-66) syllabus (see qualifications and levels) covering the elementary mathematics necessary to practice at the category B technician level. It is felt by the authors, that this level of “non-calculator” mathematics is insufficient as a prerequisite to support the study of the physics and the related technology modules, that are to follow. For this reason, and to assist students who wish to pursue other related qualifications, a section has been included on “further mathematics”. The coverage of JAR 66 Module 2 on physics is sufficiently comprehensive and at a depth, necessary for both category B1 and B2 technicians.

The section on Electrical and electronic fundamentals comprehensively covers ECAR 66 Module 3 and ECAR Part-66 Module 4 to a knowledge level suitable for category B2 avionic technicians. Module 5 on Digital Techniques and Electronic Instrument Systems will be covered in the fifth book in the series, Avionic Systems.

This book concludes with a section on the study of Aerodynamics, which has been written to cover ECAR Part-66 Module 8.

In view of the international nature of the civil aviation industry, all aircraft engineering maintenance staff need to be fully conversant with the SI system of units and be able to demonstrate proficiency in manipulating the “English units” of measurement adopted by international aircraft manufacturers, such as the Boeing Aircraft Company. Where considered important, the English units of measure will be emphasized alongside the universally recognized SI system. The chapter on physics (Chapter 4) provides a thorough introduction to SI units, where you will also find mention of the English system, with conversion tables between each system being provided at the beginning of Chapter 4.

To reinforce the subject matter for each major topic, there are numerous worked examples and test your knowledge written questions designed to enhance learning. In addition, at the end of each chapter you will find a selection of multiple-choice questions, that are graded to simulate the depth and breadth of knowledge required by individuals wishing to practice at the mechanic (category A) or technician (category B) level. These multiple choice question papers should be attempted after you have completed your study of the appropriate chapter. In this way, you will obtain a clearer idea of how well you have grasped the subject matter at the module level. Note also that category B knowledge is required by those wishing to practice at the category C or engineer level. Individuals hoping to pursue this route should make sure that they thoroughly understand the relevant information on routes, pathways and examination levels given later.

Further information on matters, such as aerospace operators, aircraft and aircraft component manufacturers, useful web sites, regulatory authorities, training and educational establishments and comprehensive lists of terms, definitions and references, appear as appendices at the end of the book. References are annotated using superscript numbers at the appropriate point in the text.

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In the United States auto market, the highest selling luxury brand is the Lexus. The brand is a division of the Japanese car company Toyota Motor Corporation. Its popularity among luxury car buyer is evident on the increasing acceptance of the Japanese brand in the United States auto scene.

One of the most notable models from the brand is the LS 460. The model is the ultra-luxury model of the brand. It made its debut at the 2006 New York International Auto Show (NYIAS) and since then has received positive reviews and feedbacks from consumers. Recently, the vehicle is named as the 2007 Best Engineered Vehicle by the Automotive Engineering International Magazine.

The Lexus LS 460 received the distinction after it received the most votes from AEI’s subscribers. Kevin Jost, the Editor-In-Chief of the magazine, has this to say about the award: “The voters had good reason for choosing the Lexus LS 460. ‘The LS 460 brings consumers at least nine world-firsts, including safety breakthroughs such as an advanced obstacle-detection system, emergency-steering assist and rear pre-crash systems. For driving pleasure, there’s also an eight-speed automatic transmission.” Indeed, the LS 460 is packed with a variety of features never before seen in a luxury vehicle.

One of the cutting edge features employed by the Lexus LS 460, as stated by Jost, is the eight-speed automatic transmission. This technology allows the vehicle to accelerate quickly since it provides smooth gear changes in with a wide variety of gear ratios. The smooth transmission also reduces the amount of power wasted thus increasing fuel efficiency.

The pre-crash safety systems are also a first for an automobile and the LS 460 provides such. This means that the vehicle not only provides a good performance but also protects its occupants. The obstacle-detection system provides drivers with sufficient warning to avoid possible accidents. The driver-monitoring system is also a feature of the Lexus LS 460. With this technology, safety can be checked basing on the driver’s capacity to properly drive the vehicle.

Safety features also include the emergency-steering assist which checks oversteer and understeer. With the use of sensors and advanced electronic programs, this vehicle can provide valuable steering assistance to avoid or minimize the risk of accidents.

Aside from the said features, the Lexus LS 460 also employs an intelligent powertrain control system. This system adapts to the engine’s need for power and other variables to provide good performance and respectable fuel efficiency. Rear collisions are also one of the most dangerous accidents a motorist can encounter.

To reduce the risk of severe injury caused by rear end collisions, the Lexus LS 460 features a rear pre-crash safety system. Its roof climate diffusers are also one of the advanced features that the LS 460 boasts of. Another advanced feature that made the LS 460 the top choice for most luxury car owners is the VVT-IE electrically actuated camshaft phasers. These features fused with Lexus performance parts truly make this one of the most advanced cars in the world today.

Winning the coveted title is made even sweeter by the fact that it outclassed some of the most famous vehicles. The Lexus LS 460 took the first spot with the Chevy Silverado/GMC Sierra taking the second spot. The Silverado and the Sierra are acknowledged for their remarkable fuel efficiency.

These General Motors vehicles are known to squeeze 20 miles for every gallon. This is despite the fact that the Sierra and the Silverado are both full-size pickup trucks equipped with humongous V8 engines. Taking the third spot is the sports car from German car manufacturer Porsche, the Porsche 911 Turbo. The sports car made is acknowledged as one of the best engineered vehicles due to its advanced materials and aerodynamic engineering.