Stability and Control characteristics of the Early Mark Spitfires

[Glider]

A couple of obvious points,
1) if you are in a verticle dive then you are already going 150 + or will be in seconds so there is no delay
2) gradual will be smoothly for obvious reasons you dont want to exceed VNE or hit the ground, its a balance.

And we still don't have any accidents the acid test of fragility

PS please show me where is says that a high speed dive is generally the result of a spin recovery