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P.1154 with 350sqft wing and twin Speys....

Only those Speys had all the supersonic components stripped out to meet weight criteria.

Which why the proposal was dropped once this was realised.

And no, it doesn't work unless you get the wing over 500sqft. Because the Speys weigh a lot and the fuel needed drives up weight.

However had this been a pair of RB.153....

the weight drops.

So wing area drops.

So weight drops.

Fuel needed reduced.

Weight drops again.

You can cut fusilage structure weight.

And landing gear weight.

and this in turn cuts wing area and weight.

And you start to get within criteria...