US Navy Completes Testing Cobra Bow Bulb

Press Release
Wednesday, August 08, 2012

Naval Surface Warfare Center (NSWC) Carderock Division researchers complete testing of bulb bows for DDG 51-class.

Partnering with Program Executive Office (PEO) Ships and the Naval Sea Systems Command (NAVSEA) Fleet Readiness Research and Development Program, NSWCCD conducted testing as part of the Navy's overall initiatives to reduce fuel consumption.

Located near the waterline, the bow bulb is an inverted tear drop shape that protrudes from the hull and is designed to reduce the ship's wave resistance. Specifically, the bow bulb creates a wave designed to interfere with the existing bow wave which reduces the amount of drag on the ship as well as fuel consumption and engine exhaust emissions.


"It is my hope that the DDG 51 class bow bulb will parallel the success of previous [NAVSEA] sponsored designs such as the stern flap, and not just improve the capabilities of the Navy's combatants, but provide for a reduction in fuel consumption and for millions of dollars in cost savings as well," said Dominic Cusanelli, NSWC Carderock Bow Bulb testing project lead, who developed the current bow bulb design for use on a naval combatant in the early 1990s. 


Through computational fluid dynamics, NSWC Carderock designed and evaluated more than 20 bow bulb prototypes for DDG 51-class ships. Following the evaluation, NAVSEA selected the four most promising bow bulb prototypes for fabrication and model testing. The model tests will identify the bulb design with the best potential for powering and fuel reduction. 


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

Shipbuilding

Next LCS to be Named USS Minneapolis/St. Paul

Secretary of the Navy Ray Mabus announced today that the next Freedom-variant littoral combat ship will be named USS Minneapolis/St. Paul (LCS 21). The future Minneapolis/St.

AET Names DP Shuttle for Statoil Charter

Petroleum tanker owner and operator AET today named its newest vessel, a 120,000 DWT DP2 shuttle tanker, Eagle Bergen.    Eagle Bergen is the second of two vessels

Austal Delivers Final Cape Class Patrol Boat

Cape York, the last of eight new Cape Class Patrol Boats for Australian Border Force (formerly Australian Customs and Border Protection) has been delivered by shipbuilder

Navy

Next LCS to be Named USS Minneapolis/St. Paul

Secretary of the Navy Ray Mabus announced today that the next Freedom-variant littoral combat ship will be named USS Minneapolis/St. Paul (LCS 21). The future Minneapolis/St.

HMS Prince of Wales’ Final Carrier Block Delivered

The final sections of the second Queen Elizabeth Class aircraft carrier produced by Cammell Laird arrived at Babcock Rosyth Facilities in Fife on Thursday, September 3,

Canadian Frigates Get a Radar Upgrade

German navigation system manufacturer Raytheon Anschütz has completed factory acceptance tests and delivery of 12 sets of navigation radars for the Canadian Navy’s Halifax-class frigates.

 
 
Maritime Contracts Naval Architecture Navigation Port Authority Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Sonar 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: 0.1837 sec (5 req/sec)