Boeing has announced the next phase in ecoDemonstrator 757 testing, including the first flight with US-made “green diesel” and two new environment-related technologies.
Among more than 15 technologies on the 757, Boeing has begun testing solar and thermal energy harvesting to power electronic windows, as a way to reduce wiring, weight, fuel use and carbon emissions. Also, on the 757’s flight deck, Boeing has installed a 3D-printed aisle stand made from excess carbon fiber from 787 production to re-purpose this high-value material and reduce airplane weight and factory waste.
NASA and TUI Group, the world’s largest integrated tourism group, are collaborating with Boeing on ecoDemonstrator 757 tests.
In cooperation with NASA, the 757 flew on June 17 from Seattle to NASA’s Langley Research Center in Hampton, Virginia, using a blend of 95 percent petroleum jet fuel and 5 percent sustainable green diesel, a biofuel used in ground transportation. Boeing is working with the aviation industry to approve green diesel for commercial aviation by amending the HEFA biojet specification approved in 2011. This would make aviation biofuel more widely available and price competitive with Jet A including US government incentives.
Diamond Green Diesel in Norco, Lousiana, produced the 757’s green diesel from waste animal fats, inedible corn oil and used cooking oil to reduce lifecycle CO2 emissions by up to 80 percent less than petroleum jet fuel.
This spring, under contract with NASA’s Environmentally Responsible Aviation (ERA) Project, the ecoDemonstrator 757 tested active flow control on the vertical tail and bug-phobic coatings on the right wing.
The green diesel flight to Langley was coordinated with the US Federal Aviation Administration, Pratt & Whitney and Honeywell, among others; EPIC Aviation blended the fuel. In December 2014, the ecoDemonstrator 787 made the first-ever flights with green diesel, which is a different fuel product than biodiesel.
Since it was launched in 2011, the ecoDemonstrator Program has tested more than 50 technologies with a Next-Generation 737 (2012), 787 (2014) and 757 (2015).
Earlier this month the EPA said greenhouse gas emissions generated by commercial aircraft contribute to global warming and endanger human health, a declaration that lays the groundwork for regulating domestic aircraft regulation.