Simviation Forums

Does anyone know if, in FS2002, there is a way to adjust the fuel consumption in jet aircraft in either the AIR or CONFIG files? I have AIREdit, but can not find the variable that changes the fuel consumption (TSFC), and the variable is not available in FDE.

I'm a prop engine tweaker myself, but you should find something like;

[GeneralEngineData]
fuel_flow_scalar = 1

In the aircraft.cfg file. Change the number, the smaller the number the more efficient the engine I would guess.
Although you can never tell with M$

Ozzy

[GeneralEngineData]
fuel_flow_scalar = 1

In the aircraft.cfg file. Change the number, the smaller the number the more efficient the engine I would guess.

Can anyone confirm what Ozzy said? I want to make SURE before I go and mess around with these values

f-16, I've just run a quick test. The jets work the same way as piston engines (inspite of my paranoia). So reducing the number will increase the range. Try 0.8 for a start.

Ozzy

Thanks ozzy.. I'll give .8 for starters and then reduce it gradualy to see what happens..
I'll let you know if I have any problems...

I can confirm that altering this value does change the efficiency, but not the performance. If you use a value of 1, then you can get realistic ranges, but decrease the number to increase the range. Dropping it to 0.5 will double the range etc.

Good for round-the-world trips without landing!!

If I adjust the TSFC value in my AIR file lower than 400 (on mine) does this also affect the fuel burn/range?

Which does a better job at regulating the range. TSFC or the fuel flow scalar?

Adjusting the TSFC does a good job. That was the first adjustment I made.

I think that the .cfg file fine tunes what the .air file sets as the basic plane operating parameters. So I suppose you could do it either way, but from what others have said, the .cfg file in FS2k2 rules.

Whatever works for you!

I think that the .cfg file fine tunes what the .air file sets as the basic plane operating parameters. So I suppose you could do it either way, but from what others have said, the .cfg file in FS2k2 rules.

Whatever works for you!

Can anyone please confirm what microlight said above. Is this true? How can the CFG file "adjust" the AIR file?

Can anyone please confirm what microlight said above. Is this true? How can the CFG file "adjust" the AIR file?

I don't think that's the case. I believe it's been demonstrated that the cfg file takes priority over the air file.

I understand that the .air file was the prime source of info in FS2000, but that in 2002, the bulk of the settings were transferred to the .cfg file.

So why have an .air file? Well, where the .air file is still necessary is for things like braking strength, where the setting has not been transferred to the .cfg file.

Hmmmm... Is that why I can't adjust the fuel tank capacity in the AIR file, but I can in the CFG? Changing the one in the AIR file does not change the capaity reading in the fuel menu.. I thought I did something wrong..

It will depend on which editor you use.
If you use FDE it will use .cfg as a script to get into your way. If you use a 3rd party editor such as AirEd or AAM they will co-operate with you better.

Then you can ignore .cfg unless the variable does not exist at all in the .air file.

FDE - just say no!

Ian