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What is diff between World and BODY accelation? GFORCE?

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This is just a reference coordinate system for speed and acceleration vectors

BODY axis system refers (as its name indicates) to a body-fixed (aircraft) rotating axis system

WORLD axis system refers to a non-rotating axis system

See a figure below 




The only difference is that FS labels axes differently

 X -> Z

 Y-> X

 Z-> Y

and that sign of speed/acceleration along the Y axe (vertical) is inverted

More details in Zyskowski's paper. A link to it here (4th link in Aircraft dynamics pages, documents and utilities frame)



There have been a lot of discussions on the way FS calculates g-force. I presume FSUIPC4 uses the G FORCE Simconnect variable


Hope it will help 


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