The jet aircraft engine was invented by Frank Whittle, an English inventor and RAF officer, in 1928. Later Hans von Ohain of Germany developed the concept independently at the end of the 1930s.These aircraft fly
6. Bell X2 Star buster:
This aircraft took its first flight on 18 November 1955 and was only used till 27 September 1956. It can go up to a speed of 3.1 Mach.
It has a service ceiling of 126200 ft. and was used as a research aircraft.