Speed graphs for Spitfire and Hurricane

[TheGrunch]

Originally Posted by Buchon

I know that there no Boost button but under a FM coding point of view the boost behavior is equal to WEP.

That´s because you should make overheating and damage for it so the best way is implement it in the code as is done with WEP.

When they say "boost" they just mean manifold pressure i.e. the throttle setting. The term doesn't always refer to any kind of emergency power. The overheating behaviour doesn't necessarily correspond between the aircraft capable of operating at +12lb/sq. in. and previous variants because different fuels were used. What was previously unsafe using 87 octane fuel would be achievable for limited periods and what was previously a 5 minute limit might then be a 15 minute limit, etc. Likewise there might be no changes to some of the operating limits. The devil is in the details. It's a struggle to find all the details because amendments to RAF Pilots' Notes and other such documents were often pasted on or clipped in as loose paper, and we usually only have scans or facsimiles of full editions to refer to.