Turbos, bit of advice

[Ruan]

I love how people say all the time "I've looked at the compressor map and it looks like it'll spool quick".... LOLWAT....

All the compressor map does is show how well the compressor performs and how efficient it is at a given pressure ratio, at a given airflow rate...

The "islands" explain the efficiency of the compressor, the lines running through show the shaft speed...



This explains pretty well how to read them...

But you need to know the airflow of an engine - that's all down to the engines Volumetric Efficiency... Which is easier said than done...