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 May 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

New Power Optimization Solution for LNG Carriers

NAPA and DSME launch tailored NAPA-DSME Power Solution for LNG carriers; leading LNG carrier shipyard offers specialized performance monitoring solution   South Korean shipbuilder,

Design & Operation: Wind Farm Support Vessels

Offshore wind farm development has been led globally by the UK, followed by Germany. Both countries have governments with long term commitments to renewable energy.

Shipbuilding

New Power Optimization Solution for LNG Carriers

NAPA and DSME launch tailored NAPA-DSME Power Solution for LNG carriers; leading LNG carrier shipyard offers specialized performance monitoring solution   South Korean shipbuilder,

BWTS Newcomer Sees Early Success

Norwegian manufacturer of ballast water treatment systems MMC Green Technology reports it has sold more than 70 systems since going commercial with its MMC BWMS two years ago,

Design & Operation: Wind Farm Support Vessels

Offshore wind farm development has been led globally by the UK, followed by Germany. Both countries have governments with long term commitments to renewable energy.

Navy

Adm. Swift Takes Command of Pacific Fleet

Adm. Scott H. Swift returned to his home state and relieved Adm. Harry B. Harris Jr. as commander of the U.S. Pacific Fleet during a change of command ceremony on Joint Base Pearl Harbor-Hickam,

Germany Looking to Dock Submarine Deal with India

The German Defense Minister Ursula von der Leyen is visiting India lobbying for the purchase of German Stealth Submarines and European military hardware, say local media.

Indian Navy Monitoring Activities of China

Amid increasing Chinese presence in the Indian Ocean region, Navy Chief Admiral R.K. Dhowan said that Indian Navy “minutely” monitors the activities of its Chinese counterpart in the region,

Naval Architecture

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

Design & Operation: Wind Farm Support Vessels

Offshore wind farm development has been led globally by the UK, followed by Germany. Both countries have governments with long term commitments to renewable energy.

Crowley’s 2nd LNG ConRo Ship Ahead of Schedule

Shipbuilder VT Halter Marine, Inc. announced construction has started early for the second liquefied natural gas (LNG)-powered ConRo ship, Taíno, for Crowley Holdings, Inc.

Eye on the Navy

BWTS Newcomer Sees Early Success

Norwegian manufacturer of ballast water treatment systems MMC Green Technology reports it has sold more than 70 systems since going commercial with its MMC BWMS two years ago,

Thailand: 300 "boat people" Landed in Recent Weeks

Around 300 "boat people" have landed on Thailand's shores in recent weeks, Sek Wannamethee, director-general of the information department at Thailand's Foreign Ministry, said on Friday.

U.S.: China Placed Artillery on Reclaimed Island

The United States said on Friday that China had placed mobile artillery weapons systems on a reclaimed island in the disputed South China Sea, a development that Republican Sen.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Offshore Oil Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction
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: 0.4524 sec (2 req/sec)