LCAC 91 Achieves High Speed on Algal Blend

U.S. Navy
Monday, December 12, 2011
Landing Craft, Air Cushion (LCAC) amphibious transport vehicle.

The U.S. Navy successfully concluded its final alternative fuel demonstration for the year today with the Dec. 7-9 operational tests of the 50/50 algae-derived, hydro-processed algal oil and petroleum F-76 blend in a Landing Craft, Air Cushion (LCAC) amphibious transport vehicle at Naval Surface Warfare Center Panama City.

 

The tests also marked the fastest speed achieved to date by a U.S. Navy surface craft using alternative fuel blends, as LCAC 91 reached speeds the crafts maximum speed of 50 knots, Dec. 7.  The fastest speed demonstrated on the 50/50 algal blend in previous tests was 44.5 knots by the Riverine Command Boat (experimental) (RCB-X) in October 2010 at Naval Base Norfolk, Va.

 

"Our Navy is working to be resilient to any potential energy future. Pursuing sustainable resources, such as alternative fuels that are drop-in replacements, assures our performance and mobility while protecting us from the volatility of the fossil fuel market.  This demonstration is another Wright Brothers-moment for the Navy.  We have shown that we can achieve more than 50 knots on the water and Mach 1.7 in the air - all on biofuel blends," said Rear Adm. Philip Cullom, director, Chief of Naval Operations Energy and Environmental Readiness Division.

 

LCACs move elements of a Marine Air/Ground Task Force - weapons systems, equipment, cargo, and personnel - from ship to shore and over the beach. The vehicles have four gas turbine engines, and two generators that traditionally run on NATO F76 or NATO F44.  They have a 7,000 gallon fuel capacity, an average range of 200 nautical miles, and can carry up to 150,000 lbs. 

 

"For the test, the craft was operated out in the Gulf of Mexico using two different fuel configurations so we could compare the craft's operations as powered by each fuel type," said Naval Sea Systems Command's Navy Fuels Engineering Manager Richard Leung. "After draining the diesel, LCAC 91 received approximately 5,000 gallons of the 50/50 algal blend.  We assessed the engine performance capabilities on the biofuel blend, and collected data on engine torque, acceleration rates, craft speed, fuel flow rates, propeller pitch, compressor discharge pressure, and inlet and exhaust gas temperatures"

 

Mechanical engineers bore scoped the engines and collected the technical data.  LCAC operators then provided input on how the craft performed and operated. "We are going to compare how the engines performed during the test both on the straight diesel and on the 50/50 mix. Results from the comparison will help us assess the performance of the fuel," said mechanical engineer Ben Canilang, NSWC Carderock's Naval Ship Systems Engineering Station, Philadelphia, Pa.

 

"To see what type of numbers came out, we connected a laptop with a harness that read into our digital and analogue data collectors," said mechanical engineer Peter Diamond.  "The type of analysis is simply comparing numbers. We'll plug in a stream of numbers and compare results from each of the tests."

 

"The test run on the 50/50 alternative fuel mix was very successful," said Scott Feenstra, mission director, Landing Craft Air Cushion, NSWC Panama City Division. "LCAC 91 performed without issue.  The operators were able to use high power; and reported that the craft handled beautifully and without problems."

 

Meeting the secretary of the Navy's call for a drop-in fuel replacement, no changes were required to the LCAC or fueling equipment infrastructures for the test.  Alternative fuel efforts also support the secretary's overall energy strategy to increase energy security and safeguard the environment; as well as his goals to demonstrate a Green Strike Group by 2012, and deploy a strike group composed completely of alternatively powered ships,"The Great Green Fleet," by 2016.
 

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

People & Company News

U.S. Drillers Add Rigs Despite Crude Collapse

U.S. energy firms added 5 oil rigs this week after putting 21 rigs into service last week, the most in over a year, despite a collapse in U.S. crude prices from recent highs in June,

West Africa's August Crude Exports to Asia to Slip

West African crude oil exports to Asia were expected to fall to 1.84 million barrels per day (bpd) in August, Reuters data and a survey of traders showed.     Slower

DryShips Reaches Agreement with Ocean Rig

DryShips Inc. (NASDAQ: DRYS), a global provider of marine transportation services for drybulk and petroleum cargoes, and through its subsidiary, Ocean Rig UDW Inc.

Environmental

Thordon Bearings Secures AK Ferry Contract

Thordon Bearings has received an order to supply its COMPAC system to two Alaska Ferry newbuilds under construction at the Vigor Industrial shipyard in Ketchikan, Alaska.

Cruise Industry Wins Key Norovirus Judgment

In what is being seen as a landmark decision, Hill Dickinson is the first law firm to have successfully defended a UK class action case involving a Norovirus outbreak onboard a cruise liner.

Shell Moves Ahead in Arctic with Exploratory Well

Shell Oil's icebreaker MSV Fennica weaved through nine remaining protesters hanging from the St. Johns Bridge and made its way toward the Pacific Ocean.   Authorities

Fuels & Lubes

Thordon Bearings Secures AK Ferry Contract

Thordon Bearings has received an order to supply its COMPAC system to two Alaska Ferry newbuilds under construction at the Vigor Industrial shipyard in Ketchikan, Alaska.

West Africa's August Crude Exports to Asia to Slip

West African crude oil exports to Asia were expected to fall to 1.84 million barrels per day (bpd) in August, Reuters data and a survey of traders showed.     Slower

ClassNK Releases Guidelines for CNG Carriers

Classification society ClassNK has released its Guidelines for Compressed Natural Gas (CNG) Carriers.   Global economic and population growth is bringing about

Marine Power

Google Maps Goes Coastal with Unmanned Boat

A new high-tech unmanned vessel, launched with the help of Google, will use innovative technologies from the boatbuilding and mapping fields to map shorelines and

CSG8 Holds Change of Command Ceremony

Rear Adm. Robert  Burke turned over command of Submarine Group EIGHT (CSG8) to Rear Adm. Daryl Caudle, during a change of command ceremony at Naval Support Activity Naples, July 29, 2015.

Four Rescued from Boat Fire in California

U.S. Coast Guard and firefighter crews helped rescue four people from a boat fire Tuesday afternoon in Alameda, Calif.   Coast Guard Sector San Francisco Command

Naval Architecture

Fire-stricken Icebreaker Overhauled

SENER concludes the Almirante Irizar icebreaker engineering works for re-outfit and overhaul   SENER reports it has completed the engineering works relating to

ClassNK Releases Guidelines for CNG Carriers

Classification society ClassNK has released its Guidelines for Compressed Natural Gas (CNG) Carriers.   Global economic and population growth is bringing about

Eastern Launches Second MPSV for Hornbeck

Eastern Shipbuilding Group, Inc. has launched the second of two 302’x76’x26’ multipurpose service vessels in the HOSMPSV 310ES series for Hornbeck Offshore Services, LLC.

Eye on the Navy

South China Sea Hotline in the Works

China and Southeast Asian nations have agreed to set up a foreign ministers' hotline to tackle emergencies in the disputed South China Sea, a senior official of

Fond Farewell to HMAS Tobruk

The Governor-General, His Excellency General the Honourable Sir Peter Cosgrove, AK, MC (Retd), together with the Assistant Minister for Defence Stuart Robert, MP,

Thai Navy Lobbies for More Submarines

The Royal Thai Navy claims it urgently needs more submarines to compete with other Asian countries.   The assistant commander made the claim aimed at persuading

Government Update

Thordon Bearings Secures AK Ferry Contract

Thordon Bearings has received an order to supply its COMPAC system to two Alaska Ferry newbuilds under construction at the Vigor Industrial shipyard in Ketchikan, Alaska.

West Africa's August Crude Exports to Asia to Slip

West African crude oil exports to Asia were expected to fall to 1.84 million barrels per day (bpd) in August, Reuters data and a survey of traders showed.     Slower

DHS, Postal Service to Dedicate USCG Forever Stamp

U.S. Department of Homeland Security (DHS) and Postal Service leaders are scheduled to dedicate the United States Coast Guard Forever stamp during a ceremony Tuesday at Coast Guard Headquarters.

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Pod Propulsion Port Authority Salvage Ship Repair 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: 0.2441 sec (4 req/sec)