Simviation Forum - Can I change an aircraft's flight dynamics?

Jun 27^th, 2011 at 8:37pm

MrRistro Offline
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I have an aircraft that is unrealistically slow. I want to know if I can do something to make it fly faster. Any and all help is appreciated.

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Reply #1 - Jun 28^th, 2011 at 12:22am

Ang2dogs Offline
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You can modify any aircraft. By changing variables in the aircraft.cfg file and the AIR File.

Example: In aircraft.cfg, let's say you want to up the horsepower,

[piston_engine]
power_scalar = 1.0                            //Piston power scalar
cylinder_displacement= 130.71                //Cubic inches per cylinder
compression_ratio= 6.7:1                         //Compression ratio
number_of_cylinders=14                         //Number of cylinders
max_rated_rpm= 2700                            //Max rated RPM
max_rated_hp= 1200 [Youcan chang the horsepower from 1200 to 1300, or what ever you want]                            //Max rated HP

And then you might have to go into the AIR file, to match the change, but you need this utility to open the AIR file, which you can find here:

http://simviation.com/1/browse-Utilities-65-4

Scroll down to: FSX/FS20-04 AirEd Revised.

It's not hard to do, I've been learning how to modify aircraft for awhile now (I'll get stats for aircraft from the web).

Just remember to BACK-UP your ORIGINALS before making changes.

You can find more tips in the Design Forums.

Good luck and have fun! Cool

And by the way, Welcome to SimV.

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Reply #2 - Jun 28^th, 2011 at 3:34am

garryrussell Offline
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What aircarft is this

What do you mean by unrelistically slow

You can make changes but do the changes relly need to be made???

Are you basing your comments on extensive study of the manuals and actual behaviour under all conditions?

Or is it just something you think??

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Reply #3 - Jun 28^th, 2011 at 8:14am

Brett_Henderson Offline
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garryrussell wrote on Jun 28^th, 2011 at 3:34am:

What aircarft is this

What do you mean by unrelistically slow

You can make changes but do the changes relly need to be made???

Are you basing your comments on extensive study of the manuals and actual behaviour under all conditions?

Or is it just something you think??

Yeah.. most of these "too slow" questions stem from big jets and INDICATED vs TRUE airspeed..

You don't want to just bump stuff "up".. 'cause it's mess something else up..

« Last Edit: Jun 28^th, 2011 at 9:37am by Brett_Henderson »

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Reply #4 - Jun 28^th, 2011 at 11:56am

MrRistro Offline
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It is the TBM Avenger ghost plane from the Lost in the Triangle mission in FSX. I added sound and a panel, but the aircraft.cfg file has it down with the flight characteristics of a de Havilland Beaver DHC2.

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Reply #5 - Jun 28^th, 2011 at 12:00pm

MrRistro Offline
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I also went inside the aircraft.cfg and changed the hp to reality and the reference speeds, but they didn't change anything. I don't know what I'm doing wrong.

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Reply #6 - Jun 28^th, 2011 at 2:05pm

Strategic Retreat Offline
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Wouldn't be a better idea for you to use a REALLY flyable TBM Avenger? Either the MAAM or the only freeware (though it's for FS9)? Huh

Flight Dynamics tweaking is an art of balance that cannot be learned in five minutes, sadly, and almost always changing a value here will upset another there. Been there, done that, almost got the T-shirt. Tongue

The only alternative you'd have, if you really like the model of the Avenger you have, is to transplant the FD of the freeware FS9 model (avengv19.zip on Flightsim.com) on the FSX model, seen that Flight Dynamics is one of the least changed parts of the jump from 9 to X... but that's a delicate operation that not always manage to work satisfactorily.

To (hopefully) do it avoiding the model to behave sometimes in a funnily odd way, copy the whole contact points section and the whole lights sections from the FSX's model into the FD of the FS9 Avenger, overwriting this one's presets, then move the files of the FD of the FS9 model into the FSX's plane (backup EVERYTHING you have to mod or delete BEFORE you do, in the unfortunate case the mods don't work and you need to roll back. You. Have. Been. Warned) and then try and fly with the new modified plane.

Good luck and have fun.

There is no such a thing as overkill. Only unworthy targets.

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Reply #7 - Jun 29^th, 2011 at 12:06pm

MrRistro Offline
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That seems to have worked. Thanks!

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