Digital twin air conditioning system (SLE) aircraft

We continue the theme of model-oriented design. Earlier, we examined an example of creating a “digital twin” for a separate aviation heat exchanger. This article discusses the aviation air conditioning system and methods for creating its "digital double" in the form of a structural dynamic model.



For real model-oriented design, we must have a model of the object on which we test the operation of the control system as close as possible to the real one. The main question we are trying to answer is how to ensure compliance of the model with the real technical object.

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The processes occurring in fans and compressors are presented in the form of interpolation characteristics of objects, which allows the use of methods for the numerical solution of differential algebraic equations, the same as for the rest of the model elements. [4]

The structural diagram of a model of a turbo-refrigeration machine is shown in Figure 2

Figure 2. Structural diagram of a turbo-refrigeration machine.

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The characteristics for the stages of the turbine and compressor (fan) are set in tabular form by cleaved points and are stored in a separate file.

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• the dependence of the reduced flow through the turbine on the given degree of expansion and speed;
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