Aeroacoustic Measurements


Book Description

The book describes recent developments in aeroacoustic measurements in wind tunnels and the interpretation of the resulting data. The reader will find the latest measurement techniques described along with examples of the results.




Engineering Trustworthy Systems: Get Cybersecurity Design Right the First Time


Book Description

Cutting-edge cybersecurity solutions to defend against the most sophisticated attacksThis professional guide shows, step by step, how to design and deploy highly secure systems on time and within budget. The book offers comprehensive examples, objectives, and best practices and shows how to build and maintain powerful, cost-effective cybersecurity systems. Readers will learn to think strategically, identify the highest priority risks, and apply advanced countermeasures that address the entire attack space. Engineering Trustworthy Systems: Get Cybersecurity Design Right the First Time showcases 35 years of practical engineering experience from an expert whose persuasive vision has advanced national cybersecurity policy and practices.Readers of this book will be prepared to navigate the tumultuous and uncertain future of cyberspace and move the cybersecurity discipline forward by adopting timeless engineering principles, including: •Defining the fundamental nature and full breadth of the cybersecurity problem•Adopting an essential perspective that considers attacks, failures, and attacker mindsets •Developing and implementing risk-mitigating, systems-based solutions•Transforming sound cybersecurity principles into effective architecture and evaluation strategies that holistically address the entire complex attack space







Aeroacoustics of Low Mach Number Flows


Book Description

Aeroacoustics of Low Mach Number Flows: Fundamentals, Analysis, and Measurement provides a comprehensive treatment of sound radiation from subsonic flow over moving surfaces, which is the most widespread cause of flow noise in engineering systems. This includes fan noise, rotor noise, wind turbine noise, boundary layer noise, and aircraft noise. Beginning with fluid dynamics, the fundamental equations of aeroacoustics are derived and the key methods of solution are explained, focusing both on the necessary mathematics and physics. Fundamentals of turbulence and turbulent flows, experimental methods and numerous applications are also covered. The book is an ideal source of information on aeroacoustics for researchers and graduate students in engineering, physics, or applied math, as well as for engineers working in this field. Supplementary material for this book is provided by the authors on the website www.aeroacoustics.net. The website provides educational content designed to help students and researchers in understanding some of the principles and applications of aeroacoustics, and includes example problems, data, sample codes, course plans and errata. The website is continuously being reviewed and added to. Explains the key theoretical tools of aeroacoustics, from Lighthill’s analogy to the Ffowcs Williams and Hawkings equation Provides detailed coverage of sound from lifting surfaces, boundary layers, rotating blades, ducted fans and more Presents the fundamentals of sound measurement and aeroacoustic wind tunnel testing







Unsteady Transonic Aerodynamics


Book Description

This volume complements Transonic aerodynamics (v.81 in the series) which is concerned with steady flow. This is the only book to address the subject of unsteady transonic aerodynamics, a field much different from steady aerodynamics. The most pronounced difference is the complex shock wave motions




Scientific and Technical Aerospace Reports


Book Description

Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.




Skycrane


Book Description

The Skycrane was the last creation of aircraft design pioneer Igor Sikorsky. In SKYCRANE: Igor Sikorsky's Last Vision, former Sikorsky Aircraft Executive Vice President John A. McKenna traces the development of this remarkable helicopter from original concept and early sketches to standout performer for the military and private industry. Responsible for building the first S-64 Skycrane in 1961 and for supporting its Army and commercial programs, McKenna has written a comprehensive history chronicling a radically designed helicopter that many thought would not succeed. Indeed, initial versions generated no orders. But General Harry Kinnards vision and advocacy resulted in the Skycranes support of combat operations in Vietnam as part of the groundbreaking concept of supporting Army troops with helicopters rather than trucks. In 1971 Erickson Lumber Company acquired the first Skycrane intended for commercial use to move timber deep in American forests. Owner Jack Erickson later acquired the world manufacturing and support rights to the aircraft creating Erickson Air-Crane Inc. A half century after its first flight the Skycrane continues to save lives, provide essential services, and earn daily profits worldwide. Beautifully illustrated with scores of historical photographs, SKYCRANE features interviews with engineers who designed and tested the helicopter and with Army pilots who flew it during combat in Vietnam. This engagingly written work is the definitive history of a unique and important aircraft.




Human Spaceflight Operations


Book Description

The purpose of this book is to share collective experience on human spaceflight operations. For the many authors, this is nothing less than a work of passion. They are sharing their life's work with the goal of passing on their experience to the next generation of space engineers, designers, operators, and crew.