![]() Differential equation for dynamic system model.īasically we have a variable called state (X), a vector with the variables which describe the dynamics of our system, in this case, for example, we would have angle-of-attack, airspeed, pitch angle, rolling angle, sideslip angle, etc. This model is a set of ordinary differential equations and we may represent it as shown in Figure 1.įigure 1. So we have an aircraft model to study the flight mechanics. But in a flight mechanics model I just need to know how aerodynamic forces change due to variables like angle-of-attack, Mach number, angle-of-sideslip, control surfaces deflections, regardless of how the flow detachment or any other specific aerodynamic phenomenon happens. For example, if I am studying the aerodynamics of wings, I would certainly be interested to model the flow detachment developing throughout the wing surface. However, the beauty of a model is that you focus your spyglass on the relevant details of the observed phenomenon. ![]() Once your model is validated, you are able to make good predictions on that specific field. What is a 6 DoF Nonlinear Aircraft Model?Ī very good approach to make science is to find a mathematical model to represent the piece of world you are interested in.
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