When Max Geist plans a rugged canoe trip on the rivers of Northern Minnesota, fifteen-year-old David fears that dealing with his father--an opinionated, stubborn, novice outdoorsman--will be the roughest part of their journey. Little does he know that once he enters the unforgiving wilderness his life, and that of his family, will be irrevocably changed. At the start of their trip, David's father and younger sister, Janie, briefly cross paths with a group of men who, unbeknownst to the Geist family, are on the lam. Fearing the family may have learned too much about them, the outlaws decide to track down the unknown man and his daughter and, if need be, silence them. When they find the family's campsite, David is away; he returns to find his father in a life-or-death struggle with one man and his sister being savagely attacked by another. David, extraordinarily strong for his age, saves Max and Janie's lives and, in the process, kills a man. But the second man escapes, and David knows he has a partner . . . and that it is only a matter of time before they come back to finish the job they started. The outlaws become the only predators to fear in the wild as the Geist family is hunted down like animals--and uninjured David is the family's only hope for survival. As they tread through the snow-covered rocky terrain in search of safety, what began as a family bonding trip becomes a test of David's mental and physical limits, a journey into manhood and the responsibilities that come with it. The Devil You Knowcombines the breathtaking intensity of a first-rate literary thriller with the complexity and poignancy of a classic coming-of-age novel. This is a spellbinding suspense novel with heart and soul, a story that will keep you riveted until the very last page.
The history of the helicopter may be traced back to the Chinese flying top (c. 400 BC) and to the work of Leonardo da Vinci, who sketched designs for a vertical flight machine utilizing a screw-type propeller. In the late 19th-century, Thomas Edison experimented with helicopter models, realizing that no such machine would be able to fly until the development of a sufficiently lightweight engine. When the internal combustion gasoline engine came on the scene around 1900, the stage was set for the real development of helicopter technology.While this text provides a concise history of helicopter development, its true purpose is to provide the engineering analysis required to design a highly successful rotorcraft. Toward that end the book offers thorough, comprehensive coverage of the theory of helicopter flight: the elements of vertical flight, forward flight, performance, design, mathematics of rotating systems, rotary wing dynamics and aerodynamics, aeroelasticity, stability and control, stall, noise and more.Wayne Johnson has worked for the U.S. Army and NASA at the Ames Research Center in California. Through his company Johnson Aeronautics, he is engaged in the development of software that is used throughout the world for the analysis of rotorcraft. In this book, Dr. Johnson has compiled a monumental resource that is essential reading for any student or aeronautical engineer interested in the design and development of vertical-flight aircraft.
Live to Ride is pure adrenaline--a full-throttle exploration of motorcycles that pushes to the limit, with heart-pounding accounts of riding the greatest bikes of all time, all over the world. "Live to ride, ride to live." For many motorcycle riders, these words express life's guiding principle. Just take a look at the patch emblazoned on the jackets of legions of riders. Whether they're roaring down an empty highway on two wheels at an insane speed, hopping on for a few mind-boggling loops of motocross, joining in the "rolling thunder" of a veritable outlaw motorcycle club, or just cruising on a Harley on a Sunday afternoon, motorcyclists of all stripes share a common love of the freedom that is riding. Wayne Johnson, a lifelong motorcycle-lover and acclaimed writer, takes us around the globe and onto the terrain where the most extreme, thrilling forms of riding happen. Johnson shows where it all began more than a hundred years ago when the first motorcycle evolved from the bicycle and lands us on the track today with some of the world's highest-paid athletes-- professional motorcycle road racers. From there we go inside radically different competitions like the vertigo-inspiring "Widowmaker Hillclimb" and the fastest land racing on the planet at the Bonneville Salt Flats. Johnson also offers an inside look at the legendarily secretive culture of biker clubs with firsthand accounts of his own wild rides with an outlaw club. In every one of these venues, you aren't just passing through as an observer--you are on a bike, racing across new and undiscovered country, the horizon your only destination. If you have ever wondered what it's like to climb on a motorcycle and feel its engine roar to life, or have actually done it and felt the rush of flying off into the wild blue yonder, or have simply been intrigued by this iconic part of American culture and history, hold on tight for this irresistible, one-of-a-kind journey into motorcycling.
A rotorcraft is a class of aircraft that uses large-diameter rotating wings to accomplish efficient vertical take-off and landing. The class encompasses helicopters of numerous configurations (single main rotor and tail rotor, tandem rotors, coaxial rotors), tilting proprotor aircraft, compound helicopters, and many other innovative configuration concepts. Aeromechanics covers much of what the rotorcraft engineer needs: performance, loads, vibration, stability, flight dynamics, and noise. These topics include many of the key performance attributes and the often-encountered problems in rotorcraft designs. This comprehensive book presents, in depth, what engineers need to know about modelling rotorcraft aeromechanics. The focus is on analysis, and calculated results are presented to illustrate analysis characteristics and rotor behaviour. The first third of the book is an introduction to rotorcraft aerodynamics, blade motion, and performance. The remainder of the book covers advanced topics in rotary wing aerodynamics and dynamics.
White Heat is pure adrenaline -- a thrilling exploration of extreme skiing that pushes the reader over the edge with heart-pounding accounts of people who risk their lives on the fastest, steepest slopes. Often obsessed and possibly crazy, extreme skiers and snowboarders are having the time of their lives facing death-defying challenges. But the extreme skiing life isn't just about the quest to finish first; it's a lifestyle made up of insane jumps, bone-breaking speeds, and world records -- not to mention the wild off-mountain social world, the flamboyant gear and slang completely unique to it, and, of course, the remarkable history of the racing champions and events that is its backdrop. Wayne Johnson, former competitive skier and acclaimed novelist, takes us into the cult of extreme skiing populated by stars such as one-eyed jumping champion Jerry Martin, who held the North American distance record for more than a decade, and Vinko Bogataj, whose world-famous wipeout on ABC's Wide World of Sports gave rise to the expression "pulling a Vinko." Here are real-life adventures, everything from Shane McConkey ski BASE jumping the Eiger in Switzerland to Shawn White, the Flying Tomato, throwing 1260s in the halfpipe. Johnson, who has spent a lifetime on the mountains, also puts you in his boots when recounting goose-bump- inducing tales of high-speed downhill racing, Nordic jumping competitions, avalanche control, and the hip, ripping world of snowboarding. If you've ever wondered what kind of nut would willingly choose to fly off a twenty-story ski jump, or have ever dreamed of living outside the usual boundaries, or just like to read about people having life-expanding adventures, then White Heat is an exhilarating thrill ride that will leave you breathless.
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