Greetings, I am trying to get my arms around the new parameters, specifically in the engines.cfg file, that as far as I can tell were neither in legacy AIR file tables, nor in the aircraft.cfg. So far, the SDK refers you to the ESP documentation, which is silent on these parameters, as is the new SDK. I'm specifically trying to understand how these:
high_fuel_flow = 9800
fuel_flow_max = 10000
fuel_flow_controller_p = 0.5
fuel_flow_controller_i = 0.01
fuel_flow_controller_d = 0.1
fuel_flow_controller_iboundary = 10
fuel_flow_controller_dboundary = 100
relate to and interact with our old friends:
fuel_flow_gain
ThrustSpecificFuelConsumption
fuel_flow_scalar
corrected_n2_from_ff_table (from AIR file)
In my experiment, I found that TSFC, along with the gain and scalar, had no influence on the aircraft I was experimenting with (the CJ4), and moreover that when I set the fuel_flow_max to reflect a real world value for the engine in question, that fuel flow seemed to be directly proportional to throttle position, such that fuel flow was not tied to thrust, but rather to throttle position - so fuel flow at wide open throttle was the same at sea level and 45,000' even though thrust at 45,000' is a fraction of what it is at sea level.
If I remove these new values entirely, the engine will never go above idle.
So, sorry for the long post, but wondering if anyone else has successfully experimented with these new parameters and has gleaned any insight into their interaction with (or replacement of?) our old fuel flow related friends. I am particularly interested in the fuel_flow_controller_* values as I bet they're relevant ;-)
I also noticed that the jet aircraft visible to us (the CJ4, 320 and 748) basically use the default values in most of the 'tables' from the sample jet from the old FSX/ESP/P3D SDK...
high_fuel_flow = 9800
fuel_flow_max = 10000
fuel_flow_controller_p = 0.5
fuel_flow_controller_i = 0.01
fuel_flow_controller_d = 0.1
fuel_flow_controller_iboundary = 10
fuel_flow_controller_dboundary = 100
relate to and interact with our old friends:
fuel_flow_gain
ThrustSpecificFuelConsumption
fuel_flow_scalar
corrected_n2_from_ff_table (from AIR file)
In my experiment, I found that TSFC, along with the gain and scalar, had no influence on the aircraft I was experimenting with (the CJ4), and moreover that when I set the fuel_flow_max to reflect a real world value for the engine in question, that fuel flow seemed to be directly proportional to throttle position, such that fuel flow was not tied to thrust, but rather to throttle position - so fuel flow at wide open throttle was the same at sea level and 45,000' even though thrust at 45,000' is a fraction of what it is at sea level.
If I remove these new values entirely, the engine will never go above idle.
So, sorry for the long post, but wondering if anyone else has successfully experimented with these new parameters and has gleaned any insight into their interaction with (or replacement of?) our old fuel flow related friends. I am particularly interested in the fuel_flow_controller_* values as I bet they're relevant ;-)
I also noticed that the jet aircraft visible to us (the CJ4, 320 and 748) basically use the default values in most of the 'tables' from the sample jet from the old FSX/ESP/P3D SDK...