Foundations Of Helicopter Flight

Author: S. Newman
Editor: Elsevier
ISBN: 0080928544
Size: 14,91 MB
Format: PDF, Docs
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The unique design problems which helicopters produce are many and complex. Through practical examples and illustrated case studies, supported by all the relevant theory, this primer text provides an accessible introduction which guides the reader through the theory, design, construction and operation of helicopters. Fundamental performance and control equations are developed, from which the book explores the rotor aerodynamic and dynamic characteristics of helicopters. Example calculations and performance predictions, reflecting current practice, show how to assess the feasibility of a design. * Tackles the theory, design, construction and operation of helicopters * Illustrated with many practical examples and case studies * Provides the fundamental equations describing performance and dynamic behaviour

Basic Helicopter Aerodynamics

Author: John M. Seddon
Editor: John Wiley & Sons
ISBN: 9781119972723
Size: 19,70 MB
Format: PDF
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Basic Helicopter Aerodynamics is widely appreciated as an easily accessible, rounded introduction to the first principles of the aerodynamics of helicopter flight. Simon Newman has brought this third edition completely up to date with a full new set of illustrations and imagery. An accompanying website www.wiley.com/go/seddon contains all the calculation files used in the book, problems, solutions, PPT slides and supporting MATLABĀ® code. Simon Newman addresses the unique considerations applicable to rotor UAVs and MAVs, and coverage of blade dynamics is expanded to include both flapping, lagging and ground resonance. New material is included on blade tip design, flow characteristics surrounding the rotor in forward flight, tail rotors, brown-out, blade sailing and shipborne operations. Concentrating on the well-known Sikorsky configuration of single main rotor with tail rotor, early chapters deal with the aerodynamics of the rotor in hover, vertical flight, forward flight and climb. Analysis of these motions is developed to the stage of obtaining the principal results for thrust, power and associated quantities. Later chapters turn to the characteristics of the overall helicopter, its performance, stability and control, and the important field of aerodynamic research is discussed, with some reference also to aerodynamic design practice. This introductory level treatment to the aerodynamics of helicopter flight will appeal to aircraft design engineers and undergraduate and graduate students in aircraft design, as well as practising engineers looking for an introduction to or refresher course on the subject.

The Foundations Of Fuzzy Control

Author: Harold W. Lewis
Editor: Springer Science & Business Media
ISBN: 148991854X
Size: 14,53 MB
Format: PDF, Mobi
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Harold Lewis applied a cross-disciplinary approach in his highly accessible discussion of fuzzy control concepts. With the aid of fifty-seven illustrations, he thoroughly presents a unique mathematical formalism to explain the workings of the fuzzy inference engine and a novel test plant used in the research. Additionally, the text posits a new viewpoint on why fuzzy control is more popular in some countries than in others. A direct and original view of Japanese thinking on fuzzy control methods, based on the author's personal knowledge of - and association with - Japanese fuzzy research, is also included.

Philosophical Foundations Of Contract Law

Author: Gregory Klass
Editor: OUP Oxford
ISBN: 0191022071
Size: 15,86 MB
Format: PDF, ePub, Docs
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In recent years there has been a revival of interest in the philosophical study of contract law. In 1981 Charles Fried claimed that contract law is based on the philosophy of promise and this has generated what is today known as 'the contract and promise debate'. Cutting to the heart of contemporary discussions, this volume brings together leading philosophers, legal theorists, and contract lawyers to debate the philosophical foundations of this area of law. Divided into two parts, the first explores general themes in the contract theory literature, including the philosophy of promising, the nature of contractual obligation, economic accounts of contract law, and the relationship between contract law and moral values such as personal autonomy and distributive justice. The second part uses these philosophical ideas to make progress in doctrinal debates, relating for example to contract interpretation, unfair terms, good faith, vitiating factors, and remedies. Together, the essays provide a picture of the current state of research in this revitalized area of law, and pave the way for future study and debate.

Helicopter Flight Dynamics

Author: Gareth D. Padfield
Editor: Wiley
ISBN: 1119401054
Size: 13,16 MB
Format: PDF, Kindle
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The Book The behaviour of helicopters and tiltrotor aircraft is so complex that understanding the physical mechanisms at work in trim, stability and response, and thus the prediction of Flying Qualities, requires a framework of analytical and numerical modelling and simulation. Good Flying Qualities are vital for ensuring that mission performance is achievable with safety and, in the first and second editions of Helicopter Flight Dynamics, a comprehensive treatment of design criteria was presented, relating to both normal and degraded Flying Qualities. Fully embracing the consequences of Degraded Flying Qualities during the design phase will contribute positively to safety. In this third edition, two new Chapters are included. Chapter 9 takes the reader on a journey from the origins of the story of Flying Qualities, tracing key contributions to the developing maturity and to the current position. Chapter 10 provides a comprehensive treatment of the Flight Dynamics of tiltrotor aircraft; informed by research activities and the limited data on operational aircraft. Many of the unique behavioural characteristics of tiltrotors are revealed for the first time in this book. The accurate prediction and assessment of Flying Qualities draws on the modelling and simulation discipline on the one hand and testing practice on the other. Checking predictions in flight requires clearly defined mission tasks, derived from realistic performance requirements. High fidelity simulations also form the basis for the design of stability and control augmentation systems, essential for conferring Level 1 Flying Qualities. The integrated description of flight dynamic modelling, simulation and flying qualities of rotorcraft forms the subject of this book, which will be of interest to engineers practising and honing their skills in research laboratories, academia and manufacturing industries, test pilots and flight test engineers, and as a reference for graduate and postgraduate students in aerospace engineering.

Flight Theory And Aerodynamics

Author: Charles E. Dole
Editor: John Wiley & Sons
ISBN: 1119233402
Size: 18,63 MB
Format: PDF, Kindle
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The pilot's guide to aeronautics and the complex forces of flight Flight Theory and Aerodynamics is the essential pilot's guide to the physics of flight, designed specifically for those with limited engineering experience. From the basics of forces and vectors to craft-specific applications, this book explains the mechanics behind the pilot's everyday operational tasks. The discussion focuses on the concepts themselves, using only enough algebra and trigonometry to illustrate key concepts without getting bogged down in complex calculations, and then delves into the specific applications for jets, propeller crafts, and helicopters. This updated third edition includes new chapters on Flight Environment, Aircraft Structures, and UAS-UAV Flight Theory, with updated craft examples, component photos, and diagrams throughout. FAA-aligned questions and regulatory references help reinforce important concepts, and additional worked problems provide clarification on complex topics. Modern flight control systems are becoming more complex and more varied between aircrafts, making it essential for pilots to understand the aerodynamics of flight before they ever step into a cockpit. This book provides clear explanations and flight-specific examples of the physics every pilot must know. Review the basic physics of flight Understand the applications to specific types of aircraft Learn why takeoff and landing entail special considerations Examine the force concepts behind stability and control As a pilot, your job is to balance the effects of design, weight, load factors, and gravity during flight maneuvers, stalls, high- or low-speed flight, takeoff and landing, and more. As aircraft grow more complex and the controls become more involved, an intuitive grasp of the physics of flight is your most valuable tool for operational safety. Flight Theory and Aerodynamics is the essential resource every pilot needs for a clear understanding of the forces they control.

A Historical Overview Of Aeroelasticity Branch And Transonic Dynamics Tunnel Contributions To Rotorcraft Technology And Development

Author:
Editor: DIANE Publishing
ISBN: 1428995803
Size: 13,47 MB
Format: PDF, ePub, Mobi
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An Introduction To The Theory Of Elasticity

Author: R. J. Atkin
Editor: Courier Corporation
ISBN: 0486150992
Size: 19,66 MB
Format: PDF, ePub, Docs
Read: 296
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Accessible text covers deformation and stress, derivation of equations of finite elasticity, and formulation of infinitesimal elasticity with application to two- and three-dimensional static problems and elastic waves. 1980 edition.

The Rotating Beam Problem In Helicopter Dynamics

Author: Ranjan Ganguli
Editor: Springer
ISBN: 9811060983
Size: 14,15 MB
Format: PDF, ePub, Mobi
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The book addresses computational methods for solving the problem of vibration, response, loads and stability of a helicopter rotor blade modeled as a rotating beam with flap or out-of-plane bending. The focus is on explaining the implementation of the finite element method in the space and time domain for the free vibration, aeroelastic response and stability problems. The use of Floquet analysis for the aeroelastic stability analysis of rotor blades is also shown. The contents of the book will be useful to researchers in aerodynamics and applied mechanics, and will also serve well professionals working in the aerospace industry.

Screw Business As Usual

Author: Richard Branson
Editor: Penguin
ISBN: 1101572175
Size: 10,45 MB
Format: PDF, ePub, Mobi
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RICHARD BRANSON, one of the world's most famous and admired business leaders, argues that it's time to turn capitalism upside down-to shift our values from an exclusive focus on profit to also caring for people, communities and the planet. As he writes: "It's a vibrant and definite sea change from the way business was always done, when financial profit was a driving force. Today, people aren't afraid to say, Screw business as usual!-and show they mean it. "It's amazing how I keep coming across the same message, from bustling global cities to the townships of South Africa to small villages in India to G8 climate conferences. "It's no coincidence that so many people are talking about the same thing. There's a real buzz in the air. Change is happening. "People often associate me with challenges, with trying to break records while sailing the Atlantic or flying in a jet stream in a balloon or going into space with Virgin Galactic. But this book isn't just about fun and adventure and exceeding one's wildest dreams. It's a different kind of business book. It's about revolution. My message is a simple one: business as usual isn't working. In fact, business as usual is wrecking this planet. Resources are being used up; the air, the sea, the land are all heavily polluted. The poor are getting poorer. Many are dying of starvation or because they can't afford a dollar a day for lifesaving medicine. "But my message is not all doom and gloom. I will describe how I think business can help fix things and create a more prosperous world for everyone. I happen to believe in business because I believe that business is a force for good. By that I mean that doing good is good for business. "Doing the right thing can be profitable. I will show how this works step by step in the following pages. It's the core message of this book. I often say, 'Have fun and the money will come.' I still believe that, but now I am saying, 'Do good, have fun and the money will come.'" From the Hardcover edition.