Frame of reference - moments

[fernandafenelon]

Hello everyone!

in which frame shall I provide the aerodynamic moments (stability, wind or body) PITCH, YAW and ROLL?
I am using LIFT, DRAG and SIDE as forces (wind axis).

[seanmcleod]

JSBSim supports all 3, i.e. stability, wind, body, so use whichever one you have the data for.

[fernandafenelon]

I think there might be an issue with the moments output. When I sum the moments inputs given in xml, I am supposed to find a value that equals moments/roll-wind-aero-lbsft but I am getting results that equal to moments/l-aero-lbsft.

[seanmcleod]

Well only if your moments specified in the aircraft xml are specified for the wind axes frame.

Take a look at this parallel discussion that has been taking place at virtually the exact same time - #588

[seanmcleod]

@fernandafenelon are you and @aregis74 working together on the same project? Just wondering given you were both asking virtually the same question at the same time.

[fernandafenelon]

Yes, we are! lol

[aregis74]

Yes! lol.
Thank you for all your help, @seanmcleod!

[seanmcleod]

If you coordinate your questions then I won't have to answer them twice 😉

[fernandafenelon]

Ok, sorry about that. Thank you.