Force and Moment Frames of Reference

Historically JSBSim only supported the wind and body frames of reference for specifying forces and only the body frame of reference for specifying moments.

Since Feb 28 2018 though JSBSim now supports the ability to specify any one of the body, wind or stability frames of reference for both forces and moments.

Forces

Body

<axis name="AXIAL|SIDE|NORMAL" />
<axis name="X|Y|Z" />
<axis name="X|Y|Z" frame="BODY" />

Wind

<axis name="DRAG|SIDE|LIFT" />
<axis name="X|Y|Z" frame="WIND" />

Stability

<axis name="X|Y|Z" frame="STABILITY" />

Moments

Body

<axis name="ROLL|PITCH|YAW" />
<axis name="ROLL|PITCH|YAW" frame="BODY" />

Wind

<axis name="ROLL|PITCH|YAW" frame="WIND" />

Stability

<axis name="ROLL|PITCH|YAW" frame="STABILITY" />