NASA Study Confirms Biofuels Reduce Jet Engine Pollution | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

Airborne Unlimited-
Monday

Airborne-Unmanned w/AUVSI-
Tuesday

Airborne Unlimited-
Wednesday

AMA Drone Report-
Thursday

Airborne Unlimited-
Friday

Airborne On ANN

Airborne 05.21.18

Airborne-UnManned 05.22.18

Airborne 05.23.18

AMA Drone Report 05.24.18

Airborne 05.18.18

Airborne-YouTube

Airborne 05.21.18

Airborne-UnManned 05.22.18

Airborne 05.23.18

AMA Drone Report 05.24.18

Airborne 05.18.18

Mon, Mar 20, 2017

NASA Study Confirms Biofuels Reduce Jet Engine Pollution

Cuts Particle Emissions As Much As 70 Percent, Agency Says

Using biofuels to help power jet engines reduces particle emissions in their exhaust by as much as 50 to 70 percent, in a new study conclusion that bodes well for airline economics and Earth’s environment.

The findings are the result of a cooperative international research program led by NASA and involving agencies from Germany and Canada, and are detailed in a study published in the journal Nature

During flight tests in 2013 and 2014 near NASA’s Armstrong Flight Research Center in Edwards, California, data was collected on the effects of alternative fuels on engine performance, emissions and aircraft-generated contrails at altitudes flown by commercial airliners. The test series were part of the Alternative Fuel Effects on Contrails and Cruise Emissions Study, or ACCESS.

Contrails are produced by hot aircraft engine exhaust mixing with the cold air that is typical at cruise altitudes several miles above Earth's surface, and are composed primarily of water in the form of ice crystals.

Researchers are most interested in persistent contrails because they create long-lasting, and sometimes extensive, clouds that would not normally form in the atmosphere, and are believed to be a factor in influencing Earth’s environment.

"Soot emissions also are a major driver of contrail properties and their formation," said Bruce Anderson, ACCESS project scientist at NASA’s Langley Research Center in Hampton, Virginia. "As a result, the observed particle reductions we’ve measured during ACCESS should directly translate into reduced ice crystal concentrations in contrails, which in turn should help minimize their impact on Earth’s environment."

That’s important because contrails, and the cirrus clouds that evolve from them, have a larger impact on Earth’s atmosphere than all the aviation-related carbon dioxide emissions since the first powered flight by the Wright brothers.

The tests involved flying NASA's workhorse DC-8 as high as 40,000 feet while its four engines burned a 50-50 blend of aviation fuel and a renewable alternative fuel of hydroprocessed esters and fatty acids produced from camelina plant oil. A trio of research aircraft took turns flying behind the DC-8 at distances ranging from 300 feet to more than 20 miles to take measurements on emissions and study contrail formation as the different fuels were burned.

"This was the first time we have quantified the amount of soot particles emitted by jet engines while burning a 50-50 blend of biofuel in flight," said Rich Moore, lead author of the Nature report.

The trailing aircraft included NASA's HU-25C Guardian jet based at Langley, a Falcon 20-E5 jet owned by the German Aerospace Center (DLR), and a CT-133 jet provided by the National Research Council of Canada.

“Measurements in the wake of aircraft require highly experienced crew members and proven measuring equipment, which DLR has built up over many years,” said report co-author Hans Schlager of the DLR Institute of Atmospheric Physics. “Since 2000, the DLR Falcon has been used in numerous measurement campaigns to investigate the emissions and contrails of commercial airliners.”

Researchers plan on continuing these studies to understand and demonstrate the potential benefits of replacing current fuels in aircraft with biofuels. It’s NASA’s goal to demonstrate biofuels on their proposed supersonic X-plane.

(Images provided with NASA news release)

FMI: www.nasa.gov

Advertisement

More News

Airborne 05.21.18: Bally Bomber At OSH18!, Belite Chipper, CH-53 Deliveries

Also: NATS-Aireon, H135 For US Navy, EmPower STC, Spidertracks-Olympic Aero Services Oshkosh 2018 is ramping up to be an outstanding addition to an aviator’s MUST-SEE list...>[...]

Airborne-Unmanned 05.22.18: Aurora ACUS, Horsefly Delivers, K2 LEO UAS

Also: Aero-TV: Textron's X5-55, InfraDrone App, NASA's Mars Helicopter, Gremlins on Track This month, Aurora’s Autonomous Aerial Cargo Utility System (AACUS) successfully del>[...]

AMA Drone Report 05.17.18: AMA Expo West Upgrades, UAS IPP, Amazon Snubbed

Also: Drones v Flaming Kites, Sherrif Drones, ALPA Is Watching..., Wichita Aviation Pathway After a number of years in Ontario, California; the highly anticipated 2018 rendition of>[...]

ANNouncement: Now Accepting Applications For Oshkosh 2018 Stringers!!!

An Amazing Experience Awaits The Chosen Few... E-I-C Note: There's very little we can say yet, but there is a reason why this may be THE year to throw in with ANN to cover the extr>[...]

It's On--Again! EAA/ANN Announce 2018 AirVenture Innovation Preview!

Stunningly Successful Innovation Program Draws Hundreds of Thousands of Eyeballs to ‘All Things AirVenture’ E-I-C Note: We're tremendously excited to work with EAA agai>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2018 Web Development & Design by Pauli Systems, LC