stability derivatives
stability derivatives
(OP)
Hi everyone.
I'm working in a recreational proyect. I have used a CFD (Tornado) to calculate the stability derivatives of a small aircraft.
The point is, the CFD software provides me the stability derivatives in wind-axis (stability-axis) but I need them in body axis. do you know they way (or expression) to convert to those axes?
for example I want Cxu but I have Cxalpha and Cxbetha... How I get Cxu from Cxalpha and Cxbetha??? (and the others components Cxv Cxw Cxq Cxp Cxr Cyu... Czu... Clu... Cmu... Cnu...Cnr)
thank you
I'm working in a recreational proyect. I have used a CFD (Tornado) to calculate the stability derivatives of a small aircraft.
The point is, the CFD software provides me the stability derivatives in wind-axis (stability-axis) but I need them in body axis. do you know they way (or expression) to convert to those axes?
for example I want Cxu but I have Cxalpha and Cxbetha... How I get Cxu from Cxalpha and Cxbetha??? (and the others components Cxv Cxw Cxq Cxp Cxr Cyu... Czu... Clu... Cmu... Cnu...Cnr)
thank you





RE: stability derivatives
you are interested in rotational transformations.
They are easy to derive if one axis of the three is parallel in the two coordinate systems.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: stability derivatives
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?