The Design of Aircraft Landing Gear
The Design of Aircraft Landing Gear

Author: Robert Kyle Schmidt

Publisher: SAE International

Published: 2021-02-18

Total Pages: 1092

ISBN-13: 0768099420

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The aircraft landing gear and its associated systems represent a compelling design challenge: simultaneously a system, a structure, and a machine, it supports the aircraft on the ground, absorbs landing and braking energy, permits maneuvering, and retracts to minimize aircraft drag. Yet, as it is not required during flight, it also represents dead weight and significant effort must be made to minimize its total mass. The Design of Aircraft Landing Gear, written by R. Kyle Schmidt, PE (B.A.Sc. - Mechanical Engineering, M.Sc. - Safety and Aircraft Accident Investigation, Chairman of the SAE A-5 Committee on Aircraft Landing Gear), is designed to guide the reader through the key principles of landing system design and to provide additional references when available. Many problems which must be confronted have already been addressed by others in the past, but the information is not known or shared, leading to the observation that there are few new problems, but many new people. The Design of Aircraft Landing Gear is intended to share much of the existing information and provide avenues for further exploration. The design of an aircraft and its associated systems, including the landing system, involves iterative loops as the impact of each modification to a system or component is evaluated against the whole. It is rare to find that the lightest possible landing gear represents the best solution for the aircraft: the lightest landing gear may require attachment structures which don't exist and which would require significant weight and compromise on the part of the airframe structure design. With those requirements and compromises in mind,The Design of Aircraft Landing Gear starts with the study of airfield compatibility, aircraft stability on the ground, the correct choice of tires, followed by discussion of brakes, wheels, and brake control systems. Various landing gear architectures are investigated together with the details of shock absorber designs. Retraction, kinematics, and mechanisms are studied as well as possible actuation approaches. Detailed information on the various hydraulic and electric services commonly found on aircraft, and system elements such as dressings, lighting, and steering are also reviewed. Detail design points, the process of analysis, and a review of the relevant requirements and regulations round out the book content. The Design of Aircraft Landing Gear is a landmark work in the industry, and a must-read for any engineer interested in updating specific skills and students preparing for an exciting career.

Scattering Characteristics of Aerial and Ground Radar Objects
Scattering Characteristics of Aerial and Ground Radar Objects

Author: Oleg I. Sukharevsky

Publisher: CRC Press

Published: 2024-06-24

Total Pages: 531

ISBN-13: 1040022723

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This book presents computations for various types of aerial and ground objects. It contains a brief explanation of the theoretical calculation methods used for obtaining scattering characteristics of these objects. It provides working examples for the analysis of electromagnetic wave scattering processes by different objects. Scattering Characteristics of Aerial and Ground Radar Objects is divided in two sections. The first section includes scattering characteristics for different aerial objects: aircrafts, helicopters, transport and passenger airplanes, unmanned aerial vehicles, and missiles. The second section contains data about scattering for many ground objects such as tanks, surface-to-air missile systems, ground radars, and other military objects. In total, the book contains actual data for 63 aerial objects (fighters, attack aircraft, bombers, long-range radar detection aircraft, transport aircraft, helicopters, unmanned aerial vehicles, and cruise missiles) and 18 ground objects, among which are anti-aircraft missile systems and tanks. This book contains data obtained by computations such as circular diagrams of radar backscattering; mean and median radar cross section values of various objects; probability distributions of echo signal amplitude given various parameters of illumination and various kinds of underlying surfaces (for ground objects). Also, as an example, the scattering characteristics for one surface ship are given. This book will be a valuable reference for scientists, engineers, and researchers of electromagnetic wave scattering, computational electrodynamics, and those working on radar detection and recognition algorithms for aerial and and ground radar targets.

Scatter, Adapt, and Remember
Scatter, Adapt, and Remember

Author: Annalee Newitz

Publisher: Anchor

Published: 2013-05-14

Total Pages: 333

ISBN-13: 0385535929

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In its 4.5 billion–year history, life on Earth has been almost erased at least half a dozen times: shattered by asteroid impacts, entombed in ice, smothered by methane, and torn apart by unfathomably powerful megavolcanoes. And we know that another global disaster is eventually headed our way. Can we survive it? How? As a species, Homo sapiens is at a crossroads. Study of our planet’s turbulent past suggests that we are overdue for a catastrophic disaster, whether caused by nature or by human interference. It’s a frightening prospect, as each of the Earth’s past major disasters—from meteor strikes to bombardment by cosmic radiation—resulted in a mass extinction, where more than 75 percent of the planet’s species died out. But in Scatter, Adapt, and Remember, Annalee Newitz, science journalist and editor of the science Web site io9.com explains that although global disaster is all but inevitable, our chances of long-term species survival are better than ever. Life on Earth has come close to annihilation—humans have, more than once, narrowly avoided extinction just during the last million years—but every single time a few creatures survived, evolving to adapt to the harshest of conditions. This brilliantly speculative work of popular science focuses on humanity’s long history of dodging the bullet, as well as on new threats that we may face in years to come. Most important, it explores how scientific breakthroughs today will help us avoid disasters tomorrow. From simulating tsunamis to studying central Turkey’s ancient underground cities; from cultivating cyanobacteria for “living cities” to designing space elevators to make space colonies cost-effective; from using math to stop pandemics to studying the remarkable survival strategies of gray whales, scientists and researchers the world over are discovering the keys to long-term resilience and learning how humans can choose life over death. Newitz’s remarkable and fascinating journey through the science of mass extinctions is a powerful argument about human ingenuity and our ability to change. In a world populated by doomsday preppers and media commentators obsessively forecasting our demise, Scatter, Adapt, and Remember is a compelling voice of hope. It leads us away from apocalyptic thinking into a future where we live to build a better world—on this planet and perhaps on others. Readers of this book will be equipped scientifically, intellectually, and emotionally to face whatever the future holds.

The Scattering of Thermal Radiation Into Open Underground Shelters
The Scattering of Thermal Radiation Into Open Underground Shelters

Author: J. A. Basso

Publisher:

Published: 1959

Total Pages: 26

ISBN-13:

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Although transient effects caused by the rapid heating of the entryway walls could have resulted in a considerable increase in the entryway transmission, it is felt that radiant energy was neither the sole causative agent nor the most important causative agent in producing burns within the shelters. Hot winds and/or hot wind-borne dust are now considered to be the most likely agents.

New Georgia
New Georgia

Author: Ronnie Day

Publisher: Indiana University Press

Published: 2016-02-15

Total Pages: 368

ISBN-13: 0253018854

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“A detailed, up-to-date, integrated air-land-sea history” of a pivotal WWII campaign in the Pacific from both American and Japanese perspectives (Vincent P. O'Hara, author of In Passage Perilous). In 1942, the Solomon Islands formed the stepping stones toward Rabaul, the main base of Japanese operations in the South Pacific, and the Allies’ primary objective. The stunning defeat of Japanese forces at the Naval Battle of Guadalcanal in November marked the turning point in the war against Japan and the start of an offensive in the Central Solomons aimed at New Georgia. New Georgia: The Second Battle for the Solomons tells the story of the land, sea, and air battles fought there from March through October 1943. Making careful and copious use of both Japanese and Allied sources, Ronnie Day masterfully weaves the intricate threads of these battles into a well-crafted narrative of this pivotal period in the war. As Day makes clear, combat in the Solomons exemplified the war in the Pacific, especially the importance of air power, something the Japanese failed to understand until it was too late, and the strategy of island hopping, bypassing Japanese strongholds (including Rabaul) in favor of weaker or more strategically advantageous targets. This multifaceted account gives the fighting for New Georgia its proper place in the history of the drive to break the Japanese defensive perimeter and bring the homeland within range of Allied bombers.