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 Reporter August 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Jinhai Heavy Industry Secures Another Invention Patent

Jinhai Heavy Industry of China has received patent rights for its large ship superstructure hoisting method after a state intellectual property review. The patent rights is for twenty years.

BMT ARGOSS Awarded OHSAS 18001

BMT ARGOSS, an operating company of BMT Group Ltd. has been awarded the universally recognized standard for occupational health and safety, BS OHSAS 18001. BMT ARGOSS,

There’s Still Time for SHIPPINGInsight Award Entries

Entry submissions for the first SHIPPINGInsight Award are due Friday, Aug. 1, but organizers said they will continue to accept nominations through following week to provide some extra time.

Shipbuilding

Jinhai Heavy Industry Secures Another Invention Patent

Jinhai Heavy Industry of China has received patent rights for its large ship superstructure hoisting method after a state intellectual property review. The patent rights is for twenty years.

Korea Shipbuilder Wins US$400-M Greek Order

Daewoo Shipbuilding & Marine Engineering Co., South Korea’s second-largest shipbuilder, says it has signed a contract to build 4 tankships for Maran Tankers Management,

Tuco Marine Sells First ProZero Fast Workboat

Tuco Marine Group says that it has sold its first boat shortly after the launch of ProZero, the new range of boats for the professional market. The vessel was sold

Navy

Greek Warship Evacuates Libya Personnel

Greece safely evacuated embassy staff and more than one hundred Chinese and European nationals from Libya early on Friday with a navy frigate sailing back to the Greek port of Piraeus,

Rolls Royce Marine Awarded LCS Engine Repair Contract

U.S. Department of Defense informs that Rolls Royce Marine North America, Walpole, Massachusetts, is being awarded a US$9,000,000 firm-fixed-price repair order

ABS President Wiernicki Signs New MARAD Agreement

The American Bureau of Shipping (ABS) informs that it has entered into a new Memorandum of Agreement (MOA) establishing the policies and procedures regarding the

Naval Architecture

Scottish Sea Farms Takes New Vessel Delivery

Scottish Salmon Farms has taken delivery of its latest vessel – powered by twin Doosan V158TIH main engines supplied by WaterMota.   Designed by consultant naval

ATB Barge Project for Murray & Associates

Murray & Associates, LLC has been commissioned to deliver a comprehensive design package for an 185,000 BBL Chemical Tank Barge new construction project. The

Burger Boat to Build New Passenger Vessel

Burger Boat Company announced that it has received a contract for the construction of an 89-foot (27-meter) steel passenger vessel for Wendella Sightseeing Company, Chicago, Ill.

Eye on the Navy

Video: RIMPAC 2014 Ships Underway

The U.S. Navy posted a video showing Rim of the Pacific (RIMPAC) Exercise 2014 operations underway. Watch as 42 ships and submarines representing 15 international

Former MSC Manager Sentenced on Bribes Charges

Former Afloat Programs Manager at the United States Navy Military Sealift Command (MSC), Kenny E. Toy, was sentenced to 96 months in prison for receiving bribes, the U.

Hellfire Missile Firing a First for New Navy Helicopters

The Royal Australian Navy’s newest maritime combat helicopter, the MH-60R Seahawk ‘Romeo’, has successfully fired its first ‘Hellfire’ missile in the United States.

 
 
Maritime Contracts Maritime Standards Pod Propulsion Port Authority Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | 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: 0.2261 sec (4 req/sec)