Many brave men and women have given their lives in armed conflicts so that we may live in freedom today. A great debt is owed to these soldiers, sailors and flyers, both men and women, and they must never be forgotten. Glynis Amy Allen has met quite a few of their spirits, while walking the battlefields of World War I, during her nursing career and when giving personal readings as a medium. This book is a tribute to them.Inspired by her experiences, Glynis has researched others’ similar sp...

In 18th century England, life is tough for the Auldfield farming family but they are proud, hard-working people. Nance’s sorrow at her sister’s death is eased a little by falling in love but this only begins a sequence of devastating events that seem to lead to one place - the gallows! Unknown to her, she is guided by her sister’s loving spirit, finding new life and love herself in the afterlife and trying desperately to avert the consequences of Nance’s recklessness. The author’s debut no...

A practical guide to the principles of radio communications for both civilian and military applicationsIn this book, the author covers both the civilian and military uses of technology, focusing particularly on the applications of radio propagation and prediction. Divided into two parts, the author introduces the basic theory of radio prediction before providing a step-by-step explanation of how this theory can be translated into real-life applications. In addition...

Autonomous unmanned air vehicles (UAVs) are critical to current and future military, civil, and commercial operations. Despite their importance, no previous textbook has accessibly introduced UAVs to students in the engineering, computer, and science disciplines--until now. Small Unmanned Aircraft provides a concise but comprehensive description of the key concepts and technologies underlying the dynamics, control, and guidance of fixed-wing unmanned aircraft, and enables all stud...

This third edition of Aircraft Systems represents a timely update of the Aerospace Series’ successful and widely acclaimed flagship title. Moir and Seabridge present an in-depth study of the general systems of an aircraft – electronics, hydraulics, pneumatics, emergency systems and flight control to name but a few - that transform an aircraft shell into a living, functioning and communicating flying machine. Advances in systems technology continue to alloy systems and avionics, wi...

RADAR stands for "RAdio Detection And Ranging" and descriped equipment that determines the presence, direction, and distance of objects by using reflected electromagnetic energy. Principles of Radar fundamentals and terminology are described, in simple language, including CW, Pulse, and Doppler systems, as well as a glimpse at the mathematical processes for turning raw data into altitude, speed,  and vector.  This material is from a non-resident train...

Although the overall appearance of modern airliners has not changed a lot since the introduction of jetliners in the 1950s, their safety, efficiency and environmental friendliness have improved considerably. Main contributors to this have been gas turbine engine technology, advanced materials, computational aerodynamics, advanced structural analysis and on-board systems. Since aircraft design became a highly multidisciplinary activity, the development of multidisciplinary optimization (MDO...

This fourth e-book in the series on Amateur Radio HF Antennas covers essential, and often ill-understood HF antenna accessories.Lightning on the horizon? You are not worried … because you installed the lightning protection devices described in this e-book, and you have taken the preventive measures as prescribed.But that’s not all. Your HF antenna is now transmitting more RF power, and your receiver is getting more milliwatts from your antenna system, because you learned wh...

Is your picosatellite ready for launch? Can it withstand rocket thrusts and the vacuum of space? This do-it-yourself guide helps you conduct a series of hands-on tests designed to check your satellite’s readiness. Learn precisely what the craft and its electronic components must endure if they’re to function properly in Low Earth Orbit.The perfect follow-up to DIY Satellite Platforms (our primer for designing and building a picosatellite), this book also provides an overvi...

Finally, here is a single volume containing all of the engineering information needed to successfully design and implement any type of wireless network! Author Dan Dobkin covers every aspect of RF engineering necessary for wireless networks. He begins with a review of essential math and electromagnetic theory followed by thorough discussions of multiplexing, modulation types, bandwidth, link budgets, network concepts, radio system architectures, RF amplifiers, mixers and frequency conversi...

Written by an antenna engineer turned professor who has worked at Apple, Nokia and Amphenol, Antenna Design for Mobile Devicesis a comprehensive guide for fresh and intermediate engineers involved in antenna design. The book instructs readers through all aspects of real world antenna designs, which includes how to make a stable antenna fixture, designing various types of antennas, designing an antenna with good manufacturability, using various matching technique to improve antenna...

Find the right answer the first time with this useful handbook of preliminary aircraft design. Written by an engineer with close to 20 years of design experience, General Aviation Aircraft Design: Applied Methods and Procedures provides the practicing engineer with a versatile handbook that serves as the first source for finding answers to realistic aircraft design questions. The book is structured in an "equation/derivation/solved example" format for easy access to content. Readers will f...