Although Germany had produced a jet fighter it was Frank Whittle of the R.A.F.who had invented the jet engine and patented it as early as 1930.
虽然德国已经制造了喷气式飞机，但是R.A.F的弗兰克。卫通(Frank Whittle)发明的喷气式发动机并早在1930年就申请了专利。
Innovation in aviation has centered on the development of the jet engine for civil use, first in a turbo propeller form and later as a pure jet.
航空业的革新集中于民用航空喷气式发动机的研发，首先是涡轮螺旋桨发动机，后来是纯粹的喷气机。
Theoretical calculations are made of the effect of the jet hole on gas motion inside the TJ-jet combustion chamber of 492qs gasoline engine during compression and combustion processes.
通过理论计算研究了492 QS汽油机射流孔对射流燃烧室内气体运动的影响。
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