EcoPulse is a Distributed Hybrid-Electric Propulsion aircraft demonstrator jointly developed by Airbus, Daher and Safran. Based on Daher's TBM light-aircraft platform, this project kick-started in 2019 with an announcement at Le Bourget, supported by CORAC* (the French Civil Aviation Research Council) and co-funded by the French Government* and the EU*.
sábado, 10 de junio de 2023
New aircraft technologies. Part 16. Airframe with lower induced drag
Bjorn's Corner: New aircraft technologies. Part 16. Airframe with lower induced drag https://leehamnews.com/2023/06/09/bjorns-corner-new-aircraft-technologies-part-16-airframe-with-lower-induced-drag/
Evidence for Large Increases in Clear‐Air Turbulence Over the Past Four Decades - Prosser - 2023 - Geophysical Research Letters - Wiley Online Library
Turbulence is unpleasant to fly through in an aircraft. Strong turbulence can even injure air passengers and flight attendants. An invisible form called clear-air turbulence (CAT) is predicted to become more frequent because of climate change. Here we analyze modern atmospheric data based on four decades of observations (1979–2020) to investigate whether CAT has already started to increase. We use 21 different turbulence calculations to ensure our results are as reliable as possible. We find clear evidence of large CAT increases in various places around the world at aircraft cruising altitudes since satellites began observing the atmosphere. For example, at a typical point over the North Atlantic, the upward trend is such that the strongest category of CAT was 55% more frequent in 2020 than 1979. Our study represents the best evidence yet that CAT has increased over the past four decades, consistent with the expected effects of climate change.