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Boeing’s ecoDemonstrator is tested on Etihad Boeing 787-10

Posted 23 September 2020 · Add Comment

Boeing's ecoDemonstrator has been tested in the air, showing the programme will improve sustainability for airlines, passengers and the environment.


Boeing’s 2020 ecoDemonstrator is tested on Etihad Boeing 787-10 Dreamliner:  Image. Boeing

The 2020 programme was conducted in partnership with Etihad Airways on one of their new Boeing 787-10 Dreamliner airplanes — expanding a strategic sustainability alliance the two companies formed in the fall of 2019. Other key partners included NASA and Safran Landing Systems.


Flight testing on four projects was conducted over eight days at Boeing’s facility in Glasgow, Montana, and during two transcontinental flights between Seattle, Washington, and North Charleston, South Carolina.


Aeroacoustic research: The most comprehensive NASA aircraft system noise flight tests ever were conducted in collaboration with the agency. More than 1,000 microphones on the ground and 214 acoustic sensors attached to the outside of the 787 recorded sound levels that included over 50 unique test configurations.

The testing generated 1.6 terabytes of noise data. Objectives were fully accomplished and will improve NASA’s airplane noise prediction capabilities, advance ways for pilots to reduce noise and inform future quiet aircraft designs.


Quieter landing gear: Up to 30% of noise from airplanes approaching an airport is caused by air flowing around the landing gear. Testing was performed using landing gear designed to be quieter by Safran Landing Systems. Modifications included perforated fairings covering part of the nose landing gear and airfoil-shaped fairings wrapped around struts on the main gear. Eight acoustic sensors mounted to the landing gear augmented the 1,200 microphones used for the NASA project to record sound. Data from the testing must be analysed, but preliminary results were positive. Observers on the ground heard a noticeable reduction in noise.


Efficient flying: A new system was tested that connect pilots, air traffic controllers and airline operations centres simultaneously to optimise airplane flight routing and arrival time. Tools included a text messaging system, flight path application and NASA’s Tailored Arrival Manager.

The system simplifies the process for course changes due to weather and traffic and minimizes holding time before landing. This enhances safety by reducing radio frequency congestion and pilot-controller workload while also saving time and fuel and lowering CO2 emissions. The testing included 17 reroutings during two transcontinental flights across the United States.


Onboard disinfection: A handheld ultraviolet light wand was tested for its effectiveness in disinfecting an airplane. Using 222 nanometer far UV light, the wand disinfected the 787 flight deck in less than 15 minutes.

An antimicrobial surface coating was also tested on the flight deck during 16 flights.


These projects are part of efforts by Boeing, Etihad and the industry to identify the safest, most effective methods to disinfect the interior of an airplane and make travel safer and more sustainable with passenger wellness at the core.


Sustainable fuel: All ecoDemonstrator test flights used a blend of sustainable and traditional aviation fuel to lower CO2 emissions. Several flights flew on 50,000 U.S. gallons of a 50/50 blend — demonstrating the viability of sustainable aviation fuel at the maximum approved blend for commercial airlines.

The fuel was produced at World Energy’s refinery near Los Angeles from inedible agricultural wastes. The Roundtable on Sustainable Biomaterials certified the fuel reduces carbon emissions by more than 75% over the fuel’s life cycle.


In January 2020, Etihad took delivery of the flagship to its Greenliner programme, a specially themed green Boeing 787-10 using a fuel mix comprising 30% sustainable aviation fuel produced by World Energy.

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