Boeing unveils new 777 'ecoDemonstrator' test jet

US aircraft maker Boeing has just revealed its new 2022 ecoDemonstrator plane -- a converted, 20-year-old 777-200ER that will be tasked with testing new technologies aimed at making air travel more sustainable and safer. The ecoDemonstrator will reportedly go through a six-month series of tests both on the ground and in the sky, starting this summer. Among the 30 or so technologies set for testing during the campaign include projects designed to reduce fuel use, emissions and noise, while incorporating more sustainable materials. For instance, Boeing is collaborating with NASA to produce SMART vortex generators -- small vertical vanes on the wing designed to improve aerodynamic efficiency during takeoff and landing. Other projects include a system designed to conserve onboard greywater -- water washed into the sink will be used to flush toilets, which also reduces the weight of the aircraft. The plane will also be used to conduct tests on an "environmentally preferred" refrigerant, a new fire suppression agent to reduce greenhouse gas emissions and a heads-up enhanced vision system for pilots to improve operational efficiency. Meanwhile, Boeing will continue its comprehensive study on the impact of sustainable aviation fuel toward the reduction of emissions. The aircraft maker says the team plans to power the 777-200ER throughout its test period using a 30/70 blend of sustainable aviation fuel (SAF) and conventional jet fuel.<br/>