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Keep bumping against this one:

Dont know about Airwrench, but I do use Jerry's earlier free FDW version. Not perfect but it can depend a lot on the base .cfg & .air files you use. I also find that if one does a full dump one of the early entries in the air file is missing ( can't remember which at the moment) so it wont work in FS9.
Your problem sounds as if its an engine setting for a super/turbo charger & the V max figure for the aircraft.
BTW - I find that I use the FDW programme & then enter the values manually in the .air file & .cfg file - as I have my favourite base files.
HTH
Keith
 
Dev One said:
Dont know about Airwrench, but I do use Jerry's earlier free FDW version. Not perfect but it can depend a lot on the base .cfg & .air files you use. I also find that if one does a full dump one of the early entries in the air file is missing ( can't remember which at the moment) so it wont work in FS9.
Your problem sounds as if its an engine setting for a super/turbo charger & the V max figure for the aircraft.
BTW - I find that I use the FDW programme & then enter the values manually in the .air file & .cfg file - as I have my favourite base files.
HTH
Keith
Click to expand...

No that can't be it Keith. It's a Fokker D.XVI and I disabled the tubocharger option. It points to a value that's beyond my knowledge of the program. I hope some other airwrench user will step in.


But thank you for taking the time to react!

:salute:

Cees
 
This is probably a good time to ask what it is you're looking to fix..

I've never used AirWrench; I've used AirEd, but only to slightly tweak things that can't be accessed in the aircraft.cfg file.. which is where you can accomplish most of what you'd want, flight-dynamics wise.
 
I'm making a flight model for a brand new plane for FS9 and I really need advice from someone who knows his way around airwrench. But maybe there is a workaround: in the sim the maximum speed is to low, that's one of the thing I want to fix.

:salute:

Cees
 
Cees Donker said:
I there a person who does use Airwrench??

:icon_lol:

Cees
Click to expand...

This isn't a question of how you access the air-file, but what it is that you're trying to change.

Like I said.. you can probaly accomplish what it is you're after, editing just the aircraft.cfg file.

In fact, a cfg file parameter will over-ride the airfile.. you could tweak things like wing-efficiency, CoG, wing area, power, thrust, ect.. in the airfile, but the cfg file entries will over-ride them.

Now.. maybe AirWrench will modify the cfg file too, per your modifications in the air file.. I doubt it, but I truly don't know.. But even if it DID, you could skip AirWrench, and just modify the cfg file with a text editor.

My main point (and question), is.. what are you trying to do ?.. Modifications above and beyond what can be done in the cfg file get into tables and coeficient realtions that require you to really know what you're doing, and why..
 
Cees Donker said:
I'm making a flight model for a brand new plane for FS9 and I really need advice from someone who knows his way around airwrench. But maybe there is a workaround: in the sim the maximum speed is to low, that's one of the thing I want to fix.

:salute:

Cees
Click to expand...

Maximum speed, as in where over-speed warnings/damage begin ?

The SDK contains a section that explains what all of the cfg entries do...

For simply increasing Vmax, you can edit this paragraph (from a C172)..

[Reference Speeds]
flaps_up_stall_speed = 53.0 //Knots True (KTAS)
full_flaps_stall_speed = 48.0 //Knots True (KTAS)
cruise_speed = 115.0 //Knots True (KTAS)
max_indicated_speed = 163 //Red line (KIAS)
Click to expand...
 
Brett,

I'm trying to turn out a credible flight model for a Fokker D.XVI. After filling in all known variables I get the aforesaid message. It tells me a certain value is too high, or a combination of values. One of the consequences is that the speed of the plane is restricted to 120 kts. It's very likely that people that have been working with Airwrench encountered the same problem and can shed some light on this. I know I can change the cfg file manually. I think I've been doing that for ten years or so. But that doesn't help here. For now I wan't the overspeed warning undone. After that I want to be able to turn out that flight model that I think is credible.

Cees
 
Brett_Henderson said:
Maximum speed, as in where over-speed warnings/damage begin ?

The SDK contains a section that explains what all of the cfg entries do...

For simply increasing Vmax, you can edit this paragraph (from a C172)..
Click to expand...

Thanks, I'll take a peek to see if it helps in this case.

Cees
 
Going back to an earlier post.. the error that Airwrench was giving, was based on not just airspeed, but it's relationship to altitude... so you prob modified a table or coeficient relationship... A simple cfg edit might not "fix" that..
 
Nope, the speeds are correct, only this plane has no flaps?


[Reference Speeds]
flaps_up_stall_speed=54.000000
full_flaps_stall_speed=43.200000
cruise_speed=136.06917
max_indicated_speed=163.60691
max_mach=0.17200


Cees
 
Brett_Henderson said:
Going back to an earlier post.. the error that Airwrench was giving, was based on not just airspeed, but it's relationship to altitude... so you prob modified a table or coeficient relationship... A simple cfg edit might not "fix" that..
Click to expand...

Yes it must be something like that. Oh well.....I'l try and try :icon_lol:

Cees
 
Now, as for generating a credible set of flight-dymanics for the Fokker..

(I'm trying to be helpful, not argumentative)(my freeware realeases have been recognized for their realistic flight dynamics.. C177RG, C310, Beech P35))..

Just start with a Cub air-file, and aircraft.cfg file. Leave the air-file alone, and go through EVERY cfg entry.. right down to number of cylinders and engine displacement..

THE most important part at this point; is to get all of the 3-dimensional locations accurate.. CoG, wing_apex, wing area, control-surface location, size, and deflections.. pilot/passenger/baggage locations, fuel-tank size and location.. and of course contact points... doing this with AirWrench is redundant at best, as the cfg file has the last word.

Whatever it is that you'd do with AirWrench (or AirED, or any air-file editor) comes later, if at all. The sophistication level of the MSFS flight-model doesn't warrant messing around too much in the air-file. IOW, the realtionships between any number of variables are pretty close, for any aircraft of the same type.. in this case, a light, single-engine tail-dragger.

For brute-force testing in the performance arena.. you can start by simply modifying prop-thrust, wing-efficiency, parasitic drag, and induced drag. You'll discover a very dynamic give-n-take while doing this,, ie.. making it have a realistic takeoff roll, and climb, will likely NOT yield realistic cruise performance... you have to zero in by playing with all those parameters.. But any of the realtionships in the air-file, would (at this point), just give you a moving target, and tail-chasing frustration. Example: the relationship between lift, and AoA is probaly identical, for the Cub or the Fokker, within the existing constraints of the MSFS.
 
Cees Donker said:
Nope, the speeds are correct, only this plane has no flaps?


[Reference Speeds]
flaps_up_stall_speed=54.000000
full_flaps_stall_speed=43.200000
cruise_speed=136.06917
max_indicated_speed=163.60691
max_mach=0.17200


Cees
Click to expand...

Cees,

The max mach numbers above look incorrect. I believe it should be 0.2529851 based on your max indicated speed. The max mach parameter will set off the overspeed warning as well.

If you do not have the little program called "Convert", you should get it for numbers conversions for speeds, weights, volumes, measurements, etc.

http://joshmadison.com/convert-for-windows/
 
Now, after recompiling the plane with new textures and using the backed up cfg an air file the engine turns off and won't restart..... Oh boy what did I get into??

:running:

Cees
 
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