Throwing some light on rates of turn

[IvanK]

An excerpt from AVIA 6/2422 "Notes on the turning performance of the Spitfire as affected by Altitude and Flaps"

The only comment I would make is that the full doc discusses the fact that only "Flap 85" (Down) is selectable so the intermediate settings and any values discussed are by estimate/calculation. The values in the table are Sustained turn performance ... without Height loss.