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Formulas/Equations for AIR .asm files and datcom


kjadam

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Hello,

 

I am modelling an Ikarus C42 and am very new to flight simulator. Would someone mind pointing me in the right direction for a step by step process of the formulas/equations for writing the aircraft files as I would like calculate all of these:

 

Pitch

CMih

CMde

CMde due to propwash

CLq

CL adot

CM adot

CMq

CMq due to propwash

CMo

CM flap

CM delta trim

CM gear

 

Side Force

CyB

CyP

CyR

Cy Delta Rudder

 

Roll

ClB

ClP

ClR

Cl Delta Aileron

Cl Delta Rudder

 

Yaw

CnB

CnP

CnR

CnR due to propwash

Cn Delta Aileron

Cn Delta Rudder

Cn Delta Rudder due to propwash

 

Any help would be greatly appreciated!

 

Thank you in advance :-)

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Hello,

 

I am modelling an Ikarus C42 and am very new to flight simulator. Would someone mind pointing me in the right direction for a step by step process of the formulas/equations for writing the aircraft files as I would like calculate all of these:

 

Pitch

CMih

CMde

CMde due to propwash

CLq

CL adot

CM adot

CMq

CMq due to propwash

CMo

CM flap

CM delta trim

CM gear

 

Side Force

CyB

CyP

CyR

Cy Delta Rudder

 

Roll

ClB

ClP

ClR

Cl Delta Aileron

Cl Delta Rudder

 

Yaw

CnB

CnP

CnR

CnR due to propwash

Cn Delta Aileron

Cn Delta Rudder

Cn Delta Rudder due to propwash

 

Any help would be greatly appreciated!

 

Thank you in advance :-)

 

.Air and .cfg files are very much art as well as science. There are very few formulae and you CANNOT simply `plug in the numbers` and get anything close to true fidelity.

I spent more than a year on an accurate rendition of a Fokker 50 and even then needed more than a little help from the `artists`when running into a brick wall.

 

I hate to say `forget it`, but what you are asking for will not get the result you seek.

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Check out the program "aircraft airfile manager" (AAM).

Is in the flightsim.com file library. (But there may be a newer version online, use google.)

It displays the .air file values/graphs as actual graphs. Very helpful to have it displayed graphically.

 

I think it also has helpful info when clicking on (or hovering mouse over) an entry.

[sIGPIC][/sIGPIC]
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