Couldn't big airplanes be made to fly on electricity?

Dear EarthTalk: Can airplanes be run on cleaner fuels or be electric powered? Are there changes afoot in the airline business to find cleaner fuels?

Reema Islam

Dhaka, Bangladesh

Given air travel’s huge contribution to our collective carbon footprint — flying accounts for about 3 percent of carbon emissions worldwide by some estimates — and the fact that basic passenger and cargo jet designs haven’t changed significantly in decades, the world is certainly ready for greener forms of flying.

But since air travel emissions were not regulated under the Kyoto Protocol, the international agreement signed in 1997 that set binding targets for reducing greenhouse gas emissions, the friendly skies aren’t much greener than they were a few decades ago. And most national governments have been reluctant to impose new environmental restrictions on the already ailing airline industry.

Nonetheless, some airlines and airplane manufacturers are taking steps to improve their eco-footprints. Southwest and Continental have implemented fuel-efficiency improvements, waste reduction programs and increased recycling, and are investing in newer, more fuel-efficient airplanes. Another airline on the cutting edge of green is Virgin Atlantic, which made news in early 2008 when it became the first major carrier to test the use of biofuels (liquid fuels derived from plant matter) on passenger jet flights. Now Air New Zealand, Continental, Japan Airlines (JAL), JetBlue and Lufthansa are also testing biofuels.

Even airplane maker Boeing is getting in on the act by developing a carbon-neutral jet fuel made from algae. Boeing’s newest commercial jet, the much vaunted 787 Dreamliner (now in final testing before late 2010 delivery to several airlines), is 20 percent more fuel efficient than its predecessors thanks to more efficient engines, aerodynamic improvements and the widespread use of lighter composite materials to reduce weight. Airbus is also incorporating more lightweight composite materials into its new planes.

On the extreme end of the innovation spectrum are zero-emission airplanes that make use of little or no fuel. The French company, Lisa, is building a prototype small plane, dubbed the Hy-Bird, that uses solar power (via photovoltaic cells on the elongated wingspan) and hydrogen-powered fuel cells to fly with zero emissions — and nearly no engine noise. The company claims the Hy-Bird is the first 100-percent eco-friendly plane, and is readying a round-the-world flight punctuated by 30 event-filled stopovers.

Even more unusual is the proposed fuel-free plane dreamed up by Mississippi-based Hunt Aviation. The company is working on a prototype small plane that harnesses the natural forces of buoyancy (thanks to helium-filled pontoons) for lift-offs and gravity for landings — along with an on-board wind turbine and battery to power everything in between — to achieve flight without any fuel whatsoever.

Don’t look for these futuristic planes on airport runways anytime soon. It will likely be decades before this technology filters its way up to the big leagues. Until then, take a train or bus instead. If you must fly, compensate for your flight’s emissions by buying a “carbon offset†from TerraPass or CarbonFund.org, which will use the money to fund alternative energy and other greenhouse-gas reduction projects.

CONTACTS: Lisa Airplanes, lisa-airplanes.com; Hunt Aviation, fuellessflight.com; TerraPass, terrapass.com; CarbonFund.org, carbonfund.org.

SEND environmental questions to EarthTalk, in care of E – The Environmental Magazine, PO Box 5098, Westport, CT 06881; earthtalk@emagazine.com. E is a nonprofit publication.

Latest News

Robert J. Pallone

NORFOLK — Robert J. Pallone, 69, of Perkins St. passed away April 12, 2024, at St. Vincent Medical Center. He was a loving, eccentric CPA. He was kind and compassionate. If you ever needed anything, Bob would be right there. He touched many lives and even saved one.

Bob was born Feb. 5, 1955 in Torrington, the son of the late Joesph and Elizabeth Pallone.

Keep ReadingShow less
The artistic life of Joelle Sander

"Flowers" by the late artist and writer Joelle Sander.

Cornwall Library

The Cornwall Library unveiled its latest art exhibition, “Live It Up!,” showcasing the work of the late West Cornwall resident Joelle Sander on Saturday, April 13. The twenty works on canvas on display were curated in partnership with the library with the help of her son, Jason Sander, from the collection of paintings she left behind to him. Clearly enamored with nature in all its seasons, Sander, who split time between her home in New York City and her country house in Litchfield County, took inspiration from the distinctive white bark trunks of the area’s many birch trees, the swirling snow of Connecticut’s wintery woods, and even the scenic view of the Audubon in Sharon. The sole painting to depict fauna is a melancholy near-abstract outline of a cow, rootless in a miasma haze of plum and Persian blue paint. Her most prominently displayed painting, “Flowers,” effectively builds up layers of paint so that her flurry of petals takes on a three-dimensional texture in their rough application, reminiscent of another Cornwall artist, Don Bracken.

Keep ReadingShow less
A Seder to savor in Sheffield

Rabbi Zach Fredman

Zivar Amrami

On April 23, Race Brook Lodge in Sheffield will host “Feast of Mystics,” a Passover Seder that promises to provide ecstasy for the senses.

“’The Feast of Mystics’ was a title we used for events back when I was running The New Shul,” said Rabbi Zach Fredman of his time at the independent creative community in the West Village in New York City.

Keep ReadingShow less