How Solar Impulse 2 became the first aircraft to complete a 40,000 km fuel-free journey around the world |
When Solar Impulse 2 returned to Abu Dhabi in July 2016, it completed something that had never been achieved before. The aircraft had travelled around the world powered only by energy collected from the sun, finishing a journey of roughly 40,000 kilometres without using conventional fuel. It was not built to prove that commercial airliners…