When aviation became a science we gave the world the swing-wing, the jet engine, radar and so on.
This is presumably due to the jet engine and the spread of television.
One example of that, of course, was the jet engine to which we owe our leadership now in that field.
The two main parts are, of course, the jet engine and the body which is propelled.
Today, this country is celebrating twenty-five years of the invention of the jet engine.
That is like saying that the inventor of the jet engine in 1945 did not use jets before he had invented them.
We have invented and developed the jet engine and the hovercraft.
One thing on which we did establish our money-earning priorities was the jet engine.
