Defense

April 25, 2014

Engine test facility upgrade improves exhaust handling efficiency

Military and commercial aircraft engine developers rely on simulated altitude testing conducted at Arnold Engineering Development Complex’s, or AEDC, engine test facility, or ETF for their research and development of engine capabilities.

The condition of the test facility determines the quality of the test and there is an ongoing upgrade project for two of the intercoolers that aid in handling engine exhaust in the C-Plant Exhaust System.

The large intercoolers, measuring 46 feet diameter at the widest section and 62 feet long, are an important configuration for handling large volumes of engine exhaust. When a turbine engine test is conducted inside the C-Plant test cells, the engine exhaust flowing from the engine can reach temperatures of approximately 850 degrees to 3,000 degrees Fahrenheit. To create the proper conditions and pressures for a test of up to 75,000 feet altitude and an engine capable of operating at 100,000 pounds of thrust, the C-Plant Exhaust System houses coolers and compressors that cool and draw the engine exhaust.

“The purpose of this project is to replace the aging cooling coils and demister pads in the WC11 and WC12 intercoolers located in the C-Plant Exhaust yard area,” said Marilyn Graves, the Aerospace Testing Alliance, or ATA, program manager for the C-Plant Exhaust intercooler upgrade. “Each intercooler, or cooler, has three banks of coils, bank A, B and C, with each bank housing 20 coils for a total of 60 coils to be replaced for each cooler.

“The intercoolers cool and dehumidify exhaust gas between stages of exhaust compression to improve compressor performance and efficiency and to keep the exhaust gas temperature within working limits of the equipment,” she said. ”The water-cooled coils currently located in coolers WC11 and WC12 have been in existence for the past 30 years. Leaks as well as damaged or sagging coils have reduced the efficiency of the coolers.”

Melissa Tate, the Air Force project manager for the upgrade, said the project is part of the Advanced Large Military Engine Capability Program, or ALMEC. ALMEC, an Air Force Materiel Command program, exists to improve and modernize key Air Force Aeropropulsion Test Facility systems.

Planning for the project began in 2009 and involved considerations for conducting testing during the removal and installation upgrade process as well as safety in removing and handling the coils and demister pads.

“There was a considerable amount of planning involved with the Intercooler Project – everything from generating specifications for the replacement coils and demister pads to laying out schedules for the installation to determine the length of an outage period needed,” Graves said.

“In addition, there was considerable planning regarding safety issues — what hazards would be encountered, what PPE (personal protective equipment) would be required (and) what equipment and skill level of worker was needed.”

The expected completion date for the project is the summer of 2014.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines August 18, 2014

News: U.S. mission in Iraq could expand, Pentagon official says - The mission for U.S. troops in Iraq to help Kurdish and Iraqi security forces in their fight against Islamic militants remains limited for now, but may expand after Iraqi leaders form a new government, a Pentagon spokesman said Aug. 19.   Business: Fuel deals top...
 
 

News Briefs August 20, 2014

Trials complete on fourth Coast Guard cutter Ingalls Shipbuilding in Pascagoula, Miss., has completed acceptance sea trials for the company’s fourth U.S. Coast Guard national security cutter, Hamilton. Jim French, Ingalls’ NSC program manager, tells The Mississippi Press) the Hamilton is scheduled to be delivered next month and commissioned on Dec. 6 in Charleston, South...
 
 
Army photograph by Sgt. Thomas Duval

Air Force, Army Aviation come together to complete vital mission in Egypt

Army photograph by Sgt. Thomas Duval Soldiers and airmen load a UH-60 Black Hawk into an Air Force C17 Globemaster III Aug. 19, 2104, at an old Israeli airstrip in the Sinai Peninsula of Egypt. The airstrip is now used by the M...
 

 
Air Force photograph by TSgt. Terri Praden

Joint effort validates ability to move Stryker vehicles via air

Air Force photograph by TSgt. Terri Praden An Army Stryker combat vehicle is guided into a C-17 Globemaster III during a 25th Infantry Division training exercise Aug. 13, 2014, at Joint Base Pearl Harbor-Hickam, Hawaii. The Str...
 
 
NASA image

Ozone-depleting compound persists, NASA research shows

NASA image Satellites observed the largest ozone hole over Antarctica in 2006. Purple and blue represent areas of low ozone concentrations in the atmosphere; yellow and red are areas of higher concentrations. NASA research show...
 
 

F-16V completes major capability milestone

The newest configuration of the F-16 Fighting Falcon, the F-16V, has reached a major capability milestone with the integration of a new Active Electronically Scanned Array radar. Completing this milestone on schedule demonstrates our ability to meet program commitments, said Roderick McLean, vice president and general manager of the F-16/F-22 Integrated Fighter Group at Lockheed...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>