Implement three-degrees-of-freedom equations of motion of simple variable mass with respect to body axes
Aerospace Blockset / Equations of Motion / 3DOF
The Simple Variable Mass 3DOF (Body Axes) block implements three-degrees-of-freedom equations of motion of simple variable mass with respect to body axes. It considers the rotation in the vertical plane of a body-fixed coordinate frame about a flat Earth reference frame. For more information about the rotation and equations of motion, see Algorithms.
It considers the rotation in the vertical plane of a body-fixed coordinate frame about a flat Earth reference frame.
The equations of motion are
where the applied forces are assumed to act at the center of gravity of the body. Ureb and Wreb are the relative velocities of the mass flow () being added to or ejected from the body in body-fixed axes.
3DOF (Body Axes) | 3DOF (Wind Axes) | 4th Order Point Mass (Longitudinal) | Custom Variable Mass 3DOF (Body Axes) | Custom Variable Mass 3DOF (Wind Axes) | Simple Variable Mass 3DOF (Wind Axes)