Sustainable aviation: what is the current status?

The aviation industry faces challenges in adopting Sustainable Aviation Fuels (SAF) despite the urgent need to reduce emissions. 

Airport Technology reports that at the recent ILA Berlin air show, industry experts highlighted the critical need for sustainable aviation fuel (SAF) as the aviation sector strives to reduce its environmental impact.  

Despite various alternatives like eVTOLs, battery-electric flights, and hydrogen fuel cells, SAF remains the most viable near-term solution. Arno Zimmermann, CTO of e-fuels start-up Spark, emphasized SAF's importance in the journey towards net-zero aviation. The industry's focus on hydrogen has grown significantly, with Airbus and Embraer among those leading the way in sustainable advancements. 

Increasing focus on hydrogen 

Roland Gerhards from the Centre of Applied Aeronautical Research noted the increasing focus on hydrogen, driven by the need for innovative propulsion solutions. However, the sector faces significant hurdles, including regulatory frameworks and funding. Todd Spierling of Collins Aerospace pointed out the lack of certification standards for 100% SAF, complicating its widespread adoption. 

Political and financial challenges also impede progress. Zimmermann called for the German government to provide more substantial support for e-fuel research and development, while Spierling highlighted the need for a unified international SAF framework. 

Integrate SAF 

Despite these obstacles, the industry is determined to integrate SAF as the primary means to reduce aviation emissions. While hydrogen and electric technologies show promise, SAF is expected to play a crucial role until 2050 and beyond.