Solar Impulse-2 leaves Cairo on the last leg of its journey round the world

Solar Impulse-2, the world's largest solar-powered aircraft, is set to create history by being the world's first fully solar powered aircraft to fly round the world. It has now left the Egyptian capital, Cairo, as it sets off for Dubai on the last leg of its round-the-world tour. It had taken off from Dubai in March 2015.
This has been reported in thestatesman.com dated 24 July 2016.

The Cairo-Abu Dhabi flight would be the 17th and final segment in the journey, which has included crossings of the Pacific and Atlantic oceans. If all goes well, Solar Impulse-2 should take about 48 hours to reach Abu Dhabi - the place it began the circumnavigation in March 2015. It is being piloted by Piccard who has alternated pilot duties with his friend and business partner Andre Borschberg.
It should be an easy flight because the weather between Egypt and Abu Dhabi across Saudi is good. But the warmer, thinner air above the Saudi desert would also means Solar Impulse's motors will have to work harder to propel the vehicle forward. That would need careful management of the energy reserves in the plane's lithium polymer batteries so that they can sustain the aircraft through the night hours.
Solar Impulse 2 has covered some 30,000-Km in its quest to become the first plane to circle the world using no fuel other than the energy from the Sun.


Image courtesy wikimediacommons.org

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