Originally Posted by
Allan Lupton
I take it that you are thinking of Henri Coandă and his ducted fan. Insofar as it had no propellor, it could be described as a "jet" but I think Skylon was referring to the work of Whittle and Ohain where the first flights of their gas turbines were c 2 years apart.
That's the trouble with the use of "jet engine" where gas turbine would be clearer