Hey TF, originally I was thinking to wait for this report... but recently I changed my mind because you were going through engine powers anyway.
So heres the issue.
This issue applies to all planes (also Blenheim and other 2-pitch planes) except for the Spitfire and Hurricane with the csp.
First, you made it available to get manifold pressure back in higher altitude.
As you raise rpm from 2400 to 2700 you only gain the manifold back, but you don't gain power from the higher rpm.
A made a showcase video so you can see what's happening, watch the speed, rpm and ata.
I made a comparison with the same ata, but different rpm, to showcase the max rpm power is fixed at 2400
To showcase that the power of 2400 rpm is fixed I made an emergency boost test with 2500 rpm.
I didn't make any research if the E-1 was capable of 1.40 ata 2500rpm but the shown manifold drop of 0.2 ata at 2500 applies to the DB601Aa too. Here again you also lose power when you run at 2500 while you should be able to reach also full 1.40 ata (despite the manifold historical varaition of +/- 0.2 ata - we only lose but never gain more ata.)
https://www.youtube.com/watch?v=59RxUuRLboI
Here is the test result taken from the video:
TF 4.312
Power test with equal manifold pressure.
1.0 ata 2000 rpm ~370 km/h
1.0 ata 2400 rpm ~390 km/h -- power gain
1.0 ata 2900 rpm ~390 km/h -- no power gain / rpm power same as 2400 rpm
Manifold drop test with emergency boost/full throttle
2400 rpm = 1.4 ata
2500 rpm = 1.38 ata powerloss because of 0.2 ata manifold drop
All tests made with BF 109 E-1 full rads to make it easy to reproduce.
TF Bug Tracker: https://tfbt.nuvturais.de/issues/917
Tibsun
Bookmarks