UnScramble this Word: e p o t n i d w?

Questions

Which aeronautical engineer designed the Scneider Trophy winning Supermarine S6 seaplanes and the spitfire?

What was the anme of the first commercial hovercraft designed by Christopher Cockerell?

What is the name of the process by which metal particles are compressed into a solid body under heat lower than melting point?

Which 17th century greman engineer invented the vacuum pump?

With which innovation in transport in the 1830s is the english surgeon and inventor Sir Goldsworth Gurney associated?