Read the full story from GreenBiz.
Shell has invested in sustainable aviation fuel (SAF) firm LanzaJet, joining Japanese trading house Mitsui, Canadian oil and gas firm Suncor Energy and U.K. airline British Airways as an early-stage backer in the U.S. startup.
Andoga R, Főző L, Schrötter M, Szabo S. (2021). “The Use of Ethanol as an Alternative Fuel for Small Turbojet Engines.” Sustainability 13(5):2541. https://doi.org/10.3390/su13052541
Abstract: The use of alternative fuels to traditional kerosene-based ones in turbo-jet engines is currently being widely explored and researched. However, the application of alternative fuels in the area of small turbojet engines with thrust ratings up to 2 kilo-newtons, which are used as auxiliary power units or to propel small aircraft or drones, is not as well researched. This paper explores the use of ethanol as a sustainable fuel and its effects on the operation of a small turbojet engine under laboratory conditions. Several concentrations of ethanol and JET A-1 mixtures are explored to study the effects of this fuel on the basic parameters of a small turbojet engine. The influence of the different concentrations of the mixture on the start-up process, speed of the engine, exhaust gas temperature, and compressor pressure are evaluated. The measurements shown in the article represent a pilot study, the results of which show that ethanol can be reliably used as an alternative fuel only when its concentration in a mixture with traditional fuel is lower than 40%, yielding positive effects on the operating temperatures and small negative effects on the speed or thrust of the engine.
Read the full story at Flight Global.
Human-influenced climate change is the “defining issue for our generation to solve”, in the view of United Airlines chief executive Scott Kirby, who says his passion for the subject is behind the carrier’s attempt to become an industry leader on sustainability.
Read the full story at AzoCleanTech.
In February 2021, green-energy organization, Clean Planet Energy, revealed its revolutionary technology that will convert non-recyclable plastics into ultra-clean jet fuel. The innovation provides a solution to two significant environmental issues: rapidly rising plastic waste and increasing CO2 emissions in the aviation sector.
Read the full story from Purdue University.
A new consortium funded by an award from the U.S. Department of Defense has selected Purdue University to co-lead its first project aimed at advancing the adoption of lead-free electronics in defense systems.
The Defense Electronics Consortium (DEC), to be established and managed by the U.S. Partnership for Assured Electronics (USPAE), is designed to address the defense risks created by the contraction of the U.S. electronics manufacturing sector over the last 20 years.
Purdue, the University of Maryland and Auburn University will lead the consortium’s Lead-Free Defense Electronics Project, which has received $40 million to be distributed over a period of five to seven years. Of the $3.9 million in funds for the first year of the project, approximately $1 million has been awarded to researchers at Purdue’s West Lafayette and Northwest campuses.
The project’s goal is to foster research and action to accelerate the transition to lead-free electronics in aerospace, defense and other high-performance electronics. Consumer and automotive electronics have been transitioning to lead-free technologies since 2006 when the European Union banned the sale of lead-containing electronics. Japan, India and China followed suit with similar bans.
Read the full story at Triple Pundit.
In the latest demonstration that renewable energy has attained mainstream status, a subsidiary of Koch Industries has just teamed up with the Colorado-based biofuel company Gevo to expand sustainable aviation biofuel production in the U.S. It’s a baby step, considering Koch’s history of obstructing progress on climate action, but the new partnership could have widespread implications for the rapid decarbonization of the aviation industry and other sectors.
Fera M, Abbate R, Caterino M, Manco P, Macchiaroli R, Rinaldi M. (2020). “Economic and Environmental Sustainability for Aircrafts Service Life.” Sustainability 12(23), 10120. https://doi.org/10.3390/su122310120
Abstract: Aircrafts are responsible for a significant environmental impact mainly due to the air pollution caused by their motors. The use of composite materials for their production is a way to significantly reduce the weight of the structures and to maximise the ratio between the payload weight and the gasoline consumption. Moreover, the design phase has to consider the cost of different operations performed during the aircraft service life. During the entire life cycle, one of the main costs is the maintenance one. In the current literature, there is a lack of knowledge of methods for maintenance cost estimation in the aircraft industry; moreover, very few environmental assessment methods have been developed. Thus, the aim of this paper is to define a new method to support the aircraft design process; both the environmental and the economic dimensions have been included with the purpose of assessing the aircraft sustainability during its service life. A green index has been identified mixing the maintenance cost and an environmental parameter with the aim of identifying the greenest solution. A final practical application shows the feasibility and the simple application of the proposed approach.
Read the full story at Interesting Engineering.
Boeing is now selling furniture made out of retired plane parts. It calls its store the “luxury aviation” store and that’s no joke with items starting at $5,500 and reaching all the way to $19,500.
Led by Toxics Use Reduction Institute (TURI) Research Manager Greg Morose, the Aerospace and Defense Hexavalent Chromium Free Consortium is on the verge of finding safer alternatives to hexavalent chromium for conversion coatings, which is typically the base coating layer applied to bare aluminum.
The consortium, including Boeing, Lockheed Martin, NASA and Raytheon, has been working together since 2012 and has found safer alternatives to hexavalent chromium for sealants and bond primers. If this current phase of research is successful, hexavalent chromium could be eliminated from the entire coating system.
Lockheed Martin in Texas has completed the bare aluminum corrosion, neutral salt spray and paint adhesion performance testing. NASA has started beachfront corrosion testing at the Kennedy Space Center in Florida. TURI will conduct statistical analysis on the performance test results. A complete report of testing results and recommended safer alternatives is expected in the first quarter of 2021. View TURI’s website for details and published research reports. Contact Greg Morose for more information.
Read the full story from the Puget Sound Business Journal.
Microsoft employees in Redmond who fly to any of California’s top three airports on Alaska Airlines will soon help boost production and use of sustainable aviation fuel to counter CO2 emissions created by their business trips.
Alaska and Microsoft have inked a partnership covering the tech company’s workers who fly between Seattle-Tacoma International Airport and San Francisco International Airport, San Jose International Airport or Los Angeles International Airport — the three most popular routes Microsoft employees travel on Alaska Airlines.