Frank Whittle registered the patent in 1930 and had the first successful bench test April 1937. Hans von Ohains design first ran in September 1937. However Ohains engine was the first to fly in 1939. They are jointly accredited with inventing the Jet engine.
Christian Huelsmeyer was the first to discover the effect of radar in 1904, but radar was invented by three British scientists, Sir Robert Watson-Watt, A F Wilkins and H E Wimperis in 1935. Sir Henry Tizard put it to use in the War
Commercial flop? 27 years flying? Forget the US media hype. The ongoing benefits of Anglo French co-operation that started with Concorde are immeasurable and far outweigh the development costs. Certainly the BA Concordes were operationally profitable. http://www.concordesst.com/retire/faq_r.html
The Concorde was a flop the same way the shuttle was for us.
It was not economically viable as planned.
It never turned a profit , and was a prestige symbol more than anything. It was however the most awesome public transportation