Okay, so he was already in the UK at least a year before the flip. That would be harder to "alert" him to...
Historically, he finished the work on the engine and returned to France circa 1960 where he died in 1963. I suppose ITTL he simply remains in Britain (very possible he would be marked as strategic asset at this point and be watched - just in case) and works on BS100.

Also, note that he approached French command, NATO, probably Americans - but nobody except the British expressed any interest. The West German VAK 191B was built around the same British concept and Rolls Royce engine (which ITTL they won't have), but apparently it was the Americans who killed it off with Advanced Vertical Strike program -


...which makes the Convair 200 look sane and rational.

I suspect that the Americans are complaining about how hard it is to control in the hover and transition, while the Brits are writing about how it flies.
Sharky Ward apparently relished the hover capabilities, and wrote they were so intuitive and easy. But that was Ward.

And I'm assuming that Red UK would go straight for P1154.
I think Harriers will still be built, because they would be available earlier, and they are smaller, i.e. you can fit more of them into a ship. But gradually P1154 will supersede them.

If you're catapult launching Convair 200s, why do they have lift engines at all?
Vertical landing, I suppose. Launch always can be catapult/ski-jump (and the latter is purely British invention, and only circa 1970, and never installed on American LHDs for some reason).

I would even go as far as imagine (in half-jest) that because US generally leans towards large, expensive and technically complex solutions (every country has it's style), they would probably prefer catapults even on smaller carriers or Sea Control Ships. The ski-jump is a poor man's way to launch, and the USN can hardly have that, right? :)

The main problem is that we currently approach the issue with definite knowledge of Pegasus success, and that's the hindsight knowledge that disturbs a proper reconstruction. But for the Americans in the 60's (when the development takes place) it's very far from an established fact. We know it, they - and then - didn't, and we have to replicate their way of thinking with their contemporary knowledge. I find it very telling they did not try to replicate the engine or create their own implementation even after actually introducing Harriers into service and having full access to this technology. I may be not sufficiently familiar with US VSTOL projects, but it seems none of them had similar engine configuration, except polishing the Harrier itself, like larger wings, more payload, etc.

The more I look at it, the more it seems to be a pattern where the Pegasus configuration is deliberately rejected by US designers in favour of literally anything else. Why did they have this aversion historically, and why wouldn't they have it ITTL?
 
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I think Harriers will still be built, because they would be available earlier, and they are smaller, i.e. you can fit more of them into a ship. But gradually P1154 will supersede them.
If nothing else, it'd make a good trainer for the P1154 and help refine the concepts. Might even shift to single-hot-nozzle and twin boom tailplanes.



Vertical landing, I suppose. Launch always can be catapult/ski-jump (and the latter is purely British invention, and only circa 1970, and never installed on American LHDs for some reason).
IIRC the US didn't like the ski jump because it took over at least one helicopter launch spot, plus deck parking area.



The more I look at it, the more it seems to be a pattern where the Pegasus configuration is deliberately rejected by US designers in favour of literally anything else. Why did they have this aversion historically, and why wouldn't they have it ITTL?
Obviously, there's some respect of patents going on. Patent issued in 1955, for example, would last until 1970 or 72 (I forget how long patents lasted then). But I suspect it's a whole lot of Not Invented Here more than IP concerns.
 
If nothing else, it'd make a good trainer for the P1154 and help refine the concepts. Might even shift to single-hot-nozzle and twin boom tailplanes.
And they are very versatile as economic mass-produced aircraft for overseas deployments.

IIRC the US didn't like the ski jump because it took over at least one helicopter launch spot, plus deck parking area.
This means USMC Harriers used pure vertical takeoff in general, not running?

But I suspect it's a whole lot of Not Invented Here more than IP concerns.
Exactly. And it looks like an extremely strong current, with apparent reasoning of "we can make it powerful enough to carry those additional engines and still stick it to everybody". That's why I like the Convair 200 as working assumption, it just fits the style and the prevalent thinking.

As a side note - was there any concept that the US copied from any foreign source, friend or foe, during this period, in 60-80's?
 

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