Tech

March 1, 2013

NASA begins flight research campaign using alternate jet fuel

NASA researchers have begun a series of flights using the agency’s DC-8 flying laboratory to study the effects of alternate biofuel on engine performance, emissions and aircraft-generated contrails at altitude.

The Alternative Fuel Effects on Contrails and Cruise Emissions (ACCESS) research involves flying the DC-8 as high as 40,000 feet while an instrumented NASA Falcon HU-25 aircraft trails behind at distances ranging from 300 feet to more than 10 miles.

“We believe this study will improve understanding of contrails formation and quantify potential benefits of renewable alternate fuels in terms of aviation’s impact on the environment,” said Ruben Del Rosario, manager of NASA’s Fixed Wing Project.

ACCESS flight operations are being staged from NASA’s Dryden Aircraft Operations Facility in Palmdale, Calif., and will take place mostly within restricted airspace over Edwards Air Force Base, Calif.

During the flights, the DC-8’s four CFM56 engines will be powered by conventional JP-8 jet fuel, or a 50-50 blend of JP-8 and an alternative fuel of hydroprocessed esters and fatty acids that comes from camelina plants.

More than a dozen instruments mounted on the Falcon jet will characterize the soot and gases streaming from the DC-8, monitor the way exhaust plumes change in composition as they mix with air, and investigate the role emissions play in contrail formation.

Also, if weather conditions permit, the Falcon jet will trail commercial aircraft flying in the Southern California region, in coordination with air traffic controllers, to survey the exhaust emissions from a safe distance of 10 miles.

The flight campaign began Feb. 28 and is expected to take as long as three weeks to complete.

ACCESS follows a pair of Alternative Aviation Fuel Experiment studies conducted in 2009 and 2011 in which ground-based instruments measured the DC-8’s exhaust emissions as the aircraft burned alternative fuels while parked on the ramp at the Palmdale facility.

A second phase of ACCESS flights is planned for 2014. It will capitalize on lessons learned from the 2013 flights and include a more extensive set of measurements.

The ACCESS study is a joint project involving researchers at Dryden, NASA’s Glenn Research Center in Cleveland and NASA’s Langley Research Center in Hampton, Va.

The Fixed Wing Project within the Fundamental Aeronautics Program of NASA’s Aeronautics Research Mission Directorate manages ACCESS.

 




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


 
 

 

NASA’s 2014 HS3 hurricane mission investigated four tropical cyclones

NASA photograph NASA’s Global Hawk takes off into the sunset after mission wrap-up at NASA Wallops and heads back to NASA Armstrong. NASA’s Hurricane and Severe Storms Sentinel, or HS3, mission investigated four tropical cyclones in the 2014 Atlantic Ocean hurricane season: Cristobal, Dolly, Edouard and Gonzalo. The storms affected land areas in the Atlantic...
 
 

Raytheon gallium nitride technology validated for space applications

Satellites may soon carry Raytheon’s Gallium Nitride technology into Earth orbit. Raytheon has successfully validated its GaN Monolithic Microwave Integrated Circuit technology for use in space-bound equipment. Raytheon GaN MMICs, fabricated at its Andover, Massachusetts foundry, demonstrated the radiation hardness required for space through Single Event Burn-out and Total Ionizing Dose t...
 
 
Air Force photograph by SSgt. Christopher Gross

Airmen, families, friends remember loved ones at Arlington

Air Force photograph by SSgt. Christopher Gross Lt. Col. David Burnett lays a wreath on a tombstone during the 23rd Annual National Wreaths Across America Day Dec. 13, 2014, at Arlington National Cemetery, Virginia. Burnett, as...
 

 

Headlines December 15, 2014

News: Defense authorization bill heads to White House - Senate lawmakers finalized work on the $584.2 billion annual defense authorization bill Dec .12, putting in place a 1 percent pay raise for troops starting in January and limiting growth in housing allowance rates. Senators make final push for vets suicide-prevention bill - An effort to get a...
 
 

News Briefs December 15, 2014

Official: Afghan insurgents kill two U.S. troops An international military official has told The Associated Press that an insurgent attack on a convoy in eastern Afghanistan has killed two U.S. troops. The official says the attack happened by the Bagram air base in Parwan province near the capital, Kabul, late Dec. 12. The official spoke...
 
 
Air Force photograph by A1C Alexander Guerrero

317th AG delivers during massive JFE

Air Force photograph by A1C Alexander Guerrero Eleven C-130H Herculesí from various Air National Guard units and thirteen C-130J Super Herculesí from the 317th Airlift Group at Dyess Air Force Base, Texas, prepare to take off...
 




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>