Air performance

[Rupert]

Originally Posted by Fred Brackin

https://en.wikipedia.org/wiki/List_o...f_World_War_II

...has no manned jet aircraft with an "entered service" date before June 1944.

I was talking about the engines. You're still building TL7 tech engines even if nobody puts them in a plane. Yes, they came out a little after 1940, but it's a close enough date, IMO. If you push TL7 much later, there will be even more complaints than there already are about how radar is given as TL7, but was introduced in TL6 and so on. Yes, some things come in earlier, and some later, but not everyone seems to go with that.

As to the first turboprop's production run......

https://en.wikipedia.org/wiki/Vickers_Viscount

....has the Vickers Viscount not even flying until 1948.

Doesn't look much like 1940 to me.

Again, engine, not aeroplane, though it looks like it never entered true production.