To analyze fixed-wing aircraft in Aerospace Toolbox, use the
and its supporting classes. These classes enable you to:
Define aircraft dynamics
Define aircraft dynamics from DATCOM files
Perform static stability analyses
Generate state-space representation with linearization methods
As a guideline, consider this workflow when designing and building your fixed-wing aircraft with these classes:
Define a fixed-wing aircraft.
Define the condition (state) of a fixed-wing aircraft at an instance in time.
To define data for any and all coefficients that describe the behavior of the aircraft.
Define an aerodynamic surface on a fixed-wing aircraft.
Define a thrust vector on a fixed-wing aircraft.
Define the fixed-wing aircraft state environment.
Define the properties for the fixed-wing aircraft.
To define the control states of a fixed-wing state.
To perform static stability analysis of your fixed-wing aircraft:
Create a criteria table against which to perform static stability analysis.
To create a criteria table, use the
Aero.FixedWing.criteriaTable method. This method creates a
6-by-N table, where N is the number of criteria
To evaluate the changes in forces and moments after a perturbation as either greater
than, equal to, or less than 0 using the matching entry in the criteria table, use
staticStability method. The method uses this evaluation process:
If the evaluation of a criteria is met, the aircraft is statically stable at that condition.
If the evaluation of a criteria is not met, the aircraft is statically unstable at that condition.
If the result of the perturbation is
0, the aircraft is
statically neutral at that condition.
Use this method only in the preliminary design phase. The
staticStability method does not perform a requirements-based
For an example of static stability analysis, see Determine Nonlinear Dynamics and Static Stability of Fixed-Wing Aircraft .
To perform the linear analysis of the fixed-wing object at a given fixed-wing state, use
This method linearizes a fixed-wing aircraft around an initial state and creates a
state-space model for the linear analysis. To perform linear analysis:
For an example of fixed-wing aircraft linear analysis, see Perform Controls and Static Stability Analysis with Linearized Fixed-Wing Aircraft.
Linear analysis requires the Control System Toolbox™ license.
Aerospace Toolbox provides these examples to help you work with fixed-wing aircraft using the fixed-wing classes.
Create and analyze a fixed-wing aircraft in MATLAB using Cessna C182 geometry and coefficient data.
Convert a fixed-wing aircraft to a linear time invariant (LTI) state-space model for linear analysis.
Construct and define a custom state for a fixed-wing aircraft.