Leading edge slats:
Improve turning and aerodynamic performance over the wing during Moderated-High turning and they are on the Bf-109, Fi-156, Me-262 etc.
You will also find them on the Tiger Moth and there is a lever in rear cockpit on right side, push it to 100% to enable L-E Slat functionality during turns or 0% to have it off.
You will find them on most modern aircraft as well such as the Super Hornet and commercial airliners. Retracted in flight to minimize drag they increase the angle of attack. (If you know the basics of Wings and Lift) During Hard turns which the aircraft loses energy these help to provide more lift as airspeed is lost and stall speed creeps closer.
So L-E slats are like your flaps but on the Leading edge, providing lift but creating drag, good for slow flight.
Bf-109 has elevator and aileron trim but no rudder trim. Equipped with an Oil and Water Radiator, electrically driven prop pitch mechanism, automatic compressor, and mixture doesn't need to be touched, only pushed back during start up and left alone all other times.
Combat power is the Emergency War boost with an automatic cut out timer after 1 minute, so the engine isn't damaged.
For takeoff you need to fully open both Radiators, oil and water, prop pitch is reversed in 109, so you need the icon at the bottom of your screen to have the slider at the bottom for full prop pitch angle, unlike other aircraft it is the opposite.
Set flaps down at 20* (Estimate by looking out of cockpit) After hitting the Fuel Cock, pump some fuel by moving the lever 2-3 times. Then switch magnetos to both, set throttle lever about a 1cm from 0% and then start the engine using the key you mapped in controls. (Default- I)
That is proper takeoff, then put flaps almost up but leave a gap for turning performance, and then close your water radiator half (Estimate), and leave oil radiator open fully. The splashes on your windscreen is oil, from overheating. And if you are not careful to check water and oil temperature the tanks could perforate and you can severely damage the aircraft and engine.
Also when engine is running perfectly there should be minimal flame coming from your exhaust. And if you do not watch the RPM on your engine and it overspeeds it will be severely damage and create many rough vibrations. At any time RPM should not exceed 2400 during Takeoff/Landing/Climb and no more than 2900-3000 during a dive.
Finally the small icons in the corner represent the % of your different engine settings (Full, closed, Open, etc):
Prop Pitch, Mixture, Throttle, Radiator
And that is it from Memory. Hope that helps improve your experience in the Messerschmitt.
