US Navy High Speed Craft – Comparison of ABS and DNV Structural Requirements

2005 ◽  
Author(s):  
Raymond H. Kramer
Keyword(s):  
High Speed ◽  
Recent Experience ◽  
Hull Girder ◽  
Structural Modifications ◽  
Allowable Stresses ◽  
The Us ◽  
Us Navy ◽  
Rule Sets ◽  
Littoral Combat Ship

Recent experience with the Littoral Combat Ship (LCS), Focused Mission Ship, Ship Structure Committee (SSC) Project SR 1437 and other programs for the US Navy has required the development of structural designs for the unique loads that occur on high speed craft. Using the ABS Rules for Building and Classing High Speed Naval Craft (ABS HSNC) and the DNV Rules for Classification of High Speed, Light Craft and Naval Surface Craft, (DNV HSLC&NSC) the hull girder, slamming and vehicle deck loads required for the design of a US Navy High Speed craft/combatant are reviewed herein. Materials and allowable stresses associated with each of the class society’s rules are summarized along with the required loads and resulting structural modifications for SSC Project SR 1437, which used each of the two rule sets to determine the structural modifications for converting a commercial, high speed ferry into a high speed military transport capable of unrestricted (i.e., open ocean) operation.

The Development and Application of the Rolls-Royce MT30 Marine Gas Turbine

2011 ◽  
Author(s):  
David Pearson ◽  
Simon Newman
Keyword(s):  
Gas Turbine ◽  
Development Program ◽  
Royal Navy ◽  
Hybrid Propulsion ◽  
Rigorous Testing ◽  
Marine Application ◽  
Marine Propulsion ◽  
The Us ◽  
Us Navy ◽  
Littoral Combat Ship

The MT30 is the latest and most powerful gas turbine to enter the marine market. Recently entering US Navy service in USS Freedom, the first-of-class Littoral Combat Ship (LCS), MT30 has now been selected to be the prime power plant for two further classes of front-line warships; The Queen Elizabeth Class Aircraft Carriers for the Royal Navy, and the US Navy DDG-1000 Destroyers. This paper tracks the development of the MT30 from its well-established Rolls-Royce Aero Trent parent, discussing the changes necessary to adapt and harden the gas turbine for the marine application. The MT30 development program is described, including the rigorous testing undertaken to qualify the engine to American Bureau of Shipping (ABS) rules. Existing and future applications for the MT30 are described. Systems for achieving efficient hybrid propulsion utilising electric motors for cruise and the MT30 for boost are presented. The latest all-electric marine propulsion architectures as used on DDG-1000 and the Queen Elizabeth Class Carriers is discussed -in particular, the issue of maintaining the quality of power supply through transient load demands. The paper concludes with an insight into the latest MT30 package, which sees the system reaching class-beating power densities whilst ensuring maintainability through innovative design features.

A Comparative Study of The Us Navy Littoral Combat Ship

2004 ◽  
Author(s):  
T McDonald ◽  
◽  
S C Rusling ◽  
A R Greig ◽  
◽  
...  
Keyword(s):  
Comparative Study ◽  
The Us ◽  
Us Navy ◽  
Littoral Combat Ship

Development and Qualification of the Marine Trent MT30 for Next Generation Naval Platforms

2007 ◽  
Author(s):  
David Branch ◽  
John Wainwright
Keyword(s):  
Power System ◽  
Gas Turbine ◽  
Development Model ◽  
Next Generation ◽  
Design Features ◽  
The Us ◽  
Us Navy ◽  
Littoral Combat Ship ◽  
Integrated Power System ◽  
Future Plans

Rolls-Royce has recently developed a new aero-derivative gas turbine for Naval Warship Applications; - the Trent based MT30 has been delivered for both US Navy DD(X) Integrated Power System (IPS) Engineering Development Model (EDM) generator set and Littoral Combat Ship (LCS) mechanical drive applications. The MT30 generator set for the DD(X) EDM land based demonstrator has run successfully in the US Navy’s facility in Philadelphia. The MT30 mechanical drive gas turbine module (GTM) will begin testing in the first Lockheed Martin LCS vessel, USS Freedom, in early 2007. This paper will describe the MT30 powerplant architecture, heritage and design features and will describe some of the major technical challenges overcome during the development and qualification programs. Initial experiences of the engine in its two applications will be described, together with future plans.

Transforming the US Navy into a Web-Enabled Organization

2002 ◽  
Author(s):  
Herbert L. Pittman
Keyword(s):  
The Us ◽  
Us Navy

Immersive terrain: the US Navy, Sealab and Cold War undersea geopolitics

Area ◽  
2016 ◽  
Vol 48 (3) ◽  
pp. 332-338 ◽  
Author(s):  
Rachael Squire
Keyword(s):  
Cold War ◽  
The Us ◽  
Us Navy

Book Review: Serving Proudly: A History of Women in the US Navy

2002 ◽  
Vol 14 (2) ◽  
pp. 507-508
Author(s):  
Evelyn M. Cherpak
Keyword(s):  
The Us ◽  
Us Navy ◽  
History Of

Use of Polysiloxane Coatings for Topside Applications on US Navy Ships

2014 ◽  
Author(s):  
J. Peter Ault ◽  
Pete Lockwood ◽  
Robert Cloutier ◽  
David Kinee
Keyword(s):  
High Performance ◽  
Cost Effective ◽  
Effective Implementation ◽  
High Durability ◽  
Marine Industry ◽  
The Us ◽  
Us Navy ◽  
Oxidation Resistant ◽  
Marine Applications ◽  
Type V

Polysiloxane coatings are the most recent high performance coatings developed to take advantage of the heat and oxidation resistant properties of silicone-based materials. Commercially available polysiloxane coatings predominately consist of organic-inorganic siloxane materials (though some pure siloxane materials are available). Recently, the US Navy has approved polysiloxane coatings as “High Durability” in their specification for exterior weather resistant coatings (MIL-PRF-24635 Type V and VI). Navy approval comes after over 20 years of industry development of polysiloxane coatings for high performance industrial and marine applications, yet issues remain with their cost-effective implementation in the Navy fleet. This paper will review experiences of the offshore and marine industry with polysiloxane coatings and provide an update on the Navy adoption of the technology.

A Duet for Sailors and Pansies: Queer Archival Work and Male Same-Sex Dancing in Follow the Fleet (1936) and Other Depression-Era Films

2021 ◽  
pp. 186-213
Author(s):  
David Lugowski
Keyword(s):  
Essential Role ◽  
Contextual Analysis ◽  
Same Sex ◽  
Hollywood Films ◽  
Production Code ◽  
The Us ◽  
Us Navy ◽  
Mass Entertainment ◽  
Archival Work ◽  
Depression Era

This chapter explores a queer all-male dance lesson for partnered sailors in the Fred Astaire–Ginger Rogers musical Follow the Fleet (1936), using archival research (scripts, Production Code Administration records) and comparative textual and contextual analysis. It raises the queerness of Rogers and Astaire before exploring two intersecting axes. The association of sailors with queer behavior and effeminate “pansies” occurs in military scandals, paintings, and Depression-era Hollywood films, including Sailor’s Luck and Son of a Sailor (both 1933). The queerness of male same-sex dancing arises in ballet and in film, including Suicide Fleet (1931). Various institutions criticized or attempted to censor such representations, but they also found acceptance. The US Navy, for example, wanted the comical dance lesson removed from Fleet; instead, it was only rewritten, suggesting the inability to remove queerness from culture and its essential role in mass entertainment.

Tumblehome Ships - From Greek Triremes to the Zumwalt

2021 ◽  
Author(s):  
Robert Forrest Roddy
Keyword(s):  
World War I ◽  
World War ◽  
Steam Power ◽  
Loss Of Life ◽  
Damage Stability ◽  
The Us ◽  
Us Navy ◽  
Major Loss

After almost a century the US Navy has reintroduced tumblehome into the design of naval combatants. This paper discusses some of the reasons tumblehome was originally designed into ships and why it served it owners well for many centuries. The transition from sail to steam power a little over a century ago led to a variety of problems with the combatant ships designed with tumblehome where the lack of damage stability caused a major loss of life as these ships sank so quickly. During World War I ships designed with tumblehome fell out of favor and some of the ships were actually modified to remove the tumblehome from the design. These changes in the design of tumblehome ships are discussed in this paper.

Sign in / Sign up

Export Citation Format

Share Document