Engineers Put Next-Generation U.S. Navy Ships to the Test

MarineLink.com
Thursday, May 30, 2013
Naval Surface Warfare Center Carderock Division's (NSWCCD) Lawrence Snyder, naval architect; and Ben Ridenour, mechanical engineer; check on the Ship-to-Shore Connector (SSC) model connected underneath Carriage Two between tests in the David Taylor Model Basin, April 22 - May 17. (U.S. Navy photo by Monica McCoy)

Naval Surface Warfare Center Carderock Division (NSWCCD) engineers conducted preliminary Ship to Shore Connector (SSC) seaworthiness model tests in the David Taylor Model Basin, April 22 - May 17.


SSC is the replacement for the Navy's existing fleet of Landing Craft, Air Cushion (LCAC) vehicles, which are nearing the end of their service life.  SSCs - like the LCACs they replace - will be primarily used to haul vehicles, heavy equipment, and supplies through varied environmental conditions from amphibious ships to over the beach.

"All new Navy platforms, such as the SSC, are required to undergo a comprehensive Test and Evaluation program to assess technical and operational performance prior to full-scale production. This allows the Navy to resolve any potential problems prior to deployment," said Gerald Lawler, NSWCCD Senior Vulnerability Analyst.   "A platform's performance - with respect to survivability - typically falls under the responsibility of the Live Fire Test & Evaluation [LFT&E] program for the system.  For SSC, we're leading a multi-year effort to assess the craft's survivability, and just completed testing on one of the craft's Key Performance Parameters, or KPPs."
Carderock's David Taylor Model Basin building is 3,200 ft. long; houses high-speed- and deep-water-basins; and uses pneumatic wave makers.  The SSC model - using a skirt system developed by NSWC Panama City Division - was free to drift under a moving carriage in the basin, and moved through waves of different sizes.

"For the survivability KPP test, we created a set of target wave conditions and collected measurements as the model encountered these waves in a 'dead in the water' condition" said Larry Snyder, NSWCCD Naval Architect.  "Instrumentation was used to measure the motion and global loads. Pressure panels at select locations on the craft were used to measure the pressure due wave slap.  We'll compare the loads we measured in the basin to the design loads of the craft.  The data generated from this tests will help us extrapolate out to the anticipated lifetime of the craft and will aid in post-test numerical predictions."
By evaluating these requirements, the Navy can determine if craft will remain structurally adequate and mission capable in the "dead in the water" condition through its expected lifetime. 
"This seakeeping and survivability test was the third major test performed for the SSC LFT&E program.  Over the next several years, additional testing will be conducted to evaluate the craft's susceptibility, vulnerability, and recoverability to various threats," said Lawler.

The SSC Program requirement is for a total of 73 craft (one test and training, and 72 operational craft). Deliveries are expected to begin in fiscal year 2017, with initial operational capability projected for fiscal year 2020.
Research in ship design is tied to NSWCCD's technical capability in hull forms and fluid dynamics. Under this capability, NSWCCD provides the Navy's hydromechanics capability for surface and undersea platforms.  To learn more about the 132 technical capabilities across the NAVSEA Warfare Centers, visit:

http://www.navsea.navy.mil/Organization/WFC_TECHNICAL_CAPABILITIES_%20Rev4%20FINAL_01June2011.pdf 

Source: NSWCCD Public Affairs

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter May 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

P&I Club warns on Enclosed Space Entry & Testing

The London P&I Club says it continues to see cases of injuries and fatalities associated with entry into enclosed onboard spaces, including cargo holds on bulk

OOCL Renews VOD Training Contract

Videotel, producer and distributor of training videos, 3D animation, and e-Learning courses to the maritime market and part of KVH Industries, Inc., (Nasdaq: KVHI),

Tech & Design Solutions for Modern Workboats

EPA Tier 4 regulations (for engines of 804 hp and higher) and propulsion advancements have many manufacturers and vessel designers changing course to adapt to new requirements and customer demands.

Shipbuilding

NASSCO Lays Keel for Jones Act Tanker Liberty

U.S. shipbuilder General Dynamics NASSCO hosted a keel laying ceremony on Thursday, May 26 for the Liberty, one of three new ECO Class Jones Act tankers under a

SAFE Boats Delivers First CIV for Air and Marine Operations

SAFE Boats International (SBI), a manufacturer of aluminum boats located in Bremerton, Wash., has completed the first Coastal Interceptor Vessel (CIV) on contract from U.

Defense Appropriations Bill Includes $1 Bln for US Icebreaker

The U.S. Senate Appropriations Committee’s FY2017 Defense Appropriations Bill has included $1 billion in funding to accelerate construction of a new polar icebreaker for the U.

Navy

Phoenix Express 2016 Concludes

Maritime forces from North Africa, Europe, and the United States concluded exercise Phoenix Express 2016 with closing ceremonies in Souda Bay, Greece May 27. Phoenix Express,

US Hospital Ship Aids South Korean Sailor

A U.S. hospital ship conducted a medical evacuation, or “medevac”, May 27 to assist an ailing Republic of Korea sailor aboard a Republic of Korea Navy (ROK-N) submarine.

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

Naval Architecture

Tech & Design Solutions for Modern Workboats

EPA Tier 4 regulations (for engines of 804 hp and higher) and propulsion advancements have many manufacturers and vessel designers changing course to adapt to new requirements and customer demands.

Østensjø Rederi Orders Another Wind Farm Vessel

Rolls-Royce has signed a contract with shipyard Astilleros Gondan in Spain to design and equip a second Service Operation Vessel for ship owner Østensjø Rederi.

Royal Caribbean Orders 3 Ships from STX

Following the delivery of Harmony of the Seas on May 12 in Saint-Nazaire, the American group Royal Caribbean Cruises Ltd. signed an order for three additional vessels,

Eye on the Navy

Phoenix Express 2016 Concludes

Maritime forces from North Africa, Europe, and the United States concluded exercise Phoenix Express 2016 with closing ceremonies in Souda Bay, Greece May 27. Phoenix Express,

US Hospital Ship Aids South Korean Sailor

A U.S. hospital ship conducted a medical evacuation, or “medevac”, May 27 to assist an ailing Republic of Korea sailor aboard a Republic of Korea Navy (ROK-N) submarine.

MAN 28/33D STC Engines for Thai Navy’s New OPV

The Royal Thai Navy has ordered a new 90-m offshore patrol vessel (OPV) to be constructed at Mahidol Adulyadej naval dockyard in Sattahip.  The newbuilding, an improved River-class design,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Navigation Offshore Oil Pod Propulsion Salvage Ship Repair Ship Simulators Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1233 sec (8 req/sec)