Throwing some light on rates of turn

[MiG-3U]

Originally Posted by Crumpp

That certainly depends on which merlin and which variant we are discussing. I don't know as only snippets of the report have been posted and would only be guessing.

If you read the thread, the question was how to convert that performance to other altitudes.

The answer to that is to use the EAS scale provided in the RAE chart and convert to what ever density altitude you wish.

So, what's the point of your calculation then? You did not quess any power value but claim a time, 21 sec for 360deg, for sustained turn at 20k which is unrealistic given that power is lower at 20k than at 12k (Merlin II).

The scale does not matter, EAS or TAS, it's just slightly different calculation.