Flight Control Analysis Tools
To help you visualize handling and flight control results, Aerospace Toolbox provides functions for:
Short-period undamped natural frequency responses —
Boundary lines —
Altitude contours —
For an example of how to plot the results of the 3DOF airframe in the Sky Hogg model from
the Aerospace Blockset™, see Plot Short-Period Undamped Natural Frequency Results. This example describes
how to use the Aerospace Blockset
asbFlightControlAnalysis (Aerospace Blockset) function to guide you through computing longitudinal
and lateral-directional flying qualities. From the results, you can extract the short-period
undamped natural frequency response for plotting using the
Plot Short-Period Undamped Natural Frequency Results
Aerospace Blockset flight analysis tools generate many variables that you can explore. For
example, the analysis of a 3DOF or 6DOF airframe generates the short-period undamped
natural frequency response ωnSP. This example describes how to
compute lateral-directional handling qualities and plot the category A flight phase for
the short-period undamped natural frequency response ωnSP using
one of the
This topic requires an Aerospace Blockset license.
Start the flight control analysis template for the 3DOF configuration.
3DOF Sky Hogg Longitudinal Flying Quality Analysisproject starts in the Simulink® Editor.
To compute longitudinal and lateral-directional flying qualities, in the Analysis Workflow section, click through the guided workflow, click OK when prompted.
After computing longitudinal and lateral-directional flying qualities, find and double-click the
lonFQstructure in your workspace.
In the variables viewer, double-click the
Check that the
wnvariable exists. The
wnvariable is the short-period undamped natural frequency response you want to plot.
Plot the short-period undamped natural frequency response. In the MATLAB® Command Window, use the
shortPeriodCategoryAPlotfunction. For example, for a load factor per angle of attack of
10, enter this command.
shortPeriodCategoryAPlot(10, lonFQ.ShortPeriodMode.wn, 'ro')
A figure window with the plotted short-period undamped natural frequency response displays.
To evaluate if the results are within your tolerance limits, check that the red dot is within your limits.