An Update on SES Design Techniques and Their Application to Repowering the USCG WSES and the USN SES-200
An Update on SES Design Techniques and Their Application to Repowering the USCG WSES and the USN SES-200

Author: Robert Church

Publisher:

Published: 1989

Total Pages: 32

ISBN-13:

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The U.S. Coast Guard and the U.S. Navy are presently operating surface effects ships (SESs). The Coast Guard has three WSES craft stationed in Key West that operate in the Florida Straits. The Navy's SES-200 stationed at the Surface Effect Ship Support Office (SESSO) in Patuxent River, Maryland, has recently returned from operational deployment in Europe as part of a NATO cooperative trials program. The WSES and the SES-200 offer operational evidence of the benefits of high speed and excellent seakeeping that are characteristics of air cushion supported vehicles. Future mission scenarios may require speed capabilities greater than those of the WSES and the SES-200 and nearer to the speed capability of the presently operational U.S. Navy LCAC. For the WSES and SES-200 to achieve these speeds and explore future mission capabilities, higher power levels must be installed in the existing craft. Improvements in performance predictions and design techniques resulting from a myriad of towing tank experiments allow accurate calculations of resistance and powering for the WSES and the SES-200 that show the changes in speed and operating envelope for increased installed power levels. Various feasible engine, gearbox, propulsor, and auxiliary equipment options are presented for possible installation in the WSES and the SES-200. (fr).

Cities and Their Vital Systems
Cities and Their Vital Systems

Author: Advisory Committee on Technology and Society

Publisher: National Academies Press

Published: 1989

Total Pages: 1298

ISBN-13: 9780309037860

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Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.

Practical Ship Hydrodynamics
Practical Ship Hydrodynamics

Author: Volker Bertram

Publisher: Elsevier

Published: 2012

Total Pages: 392

ISBN-13: 0080971504

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Practical Ship Hydrodynamics provides a comprehensive overview of hydrodynamic experimental and numerical methods for ship resistance and propulsion, maneuvering, seakeeping and vibration. Beginning with an overview of problems and approaches, including the basics of modeling and full scale testing, expert author Volker Bertram introduces the marine applications of computational fluid dynamics and boundary element methods. Expanded and updated, this new edition includes: Otherwise disparate information on the factors affecting ship hydrodynamics, combined to provide one practical, go-to resource. Full coverage of new developments in computational methods and model testing techniques relating to marine design and development. New chapters on hydrodynamic aspects of ship vibrations and hydrodynamic options for fuel efficiency, and increased coverage of simple design estimates of hydrodynamic quantities such as resistance and wake fraction. With a strong focus on essential background for real-life modeling, this book is an ideal reference for practicing naval architects and graduate students.