SPIT MK I/II and over boost

[IvanK]

Specific Excess Power (Ps) is the measure of cough "E-Liabilty", and takes into account the complete picture, i.e aerodynamics power etc. The Fan plot in Il2 Compare provides a single Ps=0 line at 1000m for all types derived from turn times. From this you can determine each types Sustained G capability which is a function Ps. Fan plots were invented for this purpose.

We also know of the calculated Fan plot that the RAE produced for the 109E3 and Spitfire I at 12,000ft. Comparing the values will provide a comparative measure of Sustained turn performance ... or E under G/AOA. The chart gives the 109E 3 a sustained turn capability of 2.4G and the Spitfire MKI a sustained G of 3G.

A 0.6G sustained turn advantage is pretty significant

Neat On line implementation of Il2 Compare whose responsible for that ? V101_Tom or Ace of Aces ? ... be nice to see the fan plots in there as well.