The work presents the development of an aircraft Braking Control System Hydraulic model for a real time simulation application. The tool used is Simscape, an object oriented tool which supports the engineer in analysing systems behaviour by representing physical systems in virtual models. The model is a development of a complex non-real time model built in LMS Amesim. A process of simplification and validation in order to reach high reliability, stability and real-time simulation capabilities has been applied. The process starts with the validation of single components and ends with the modelling of the whole system. Particular attention and time have been spent on the creation and the validation of the servovalves, which were designed from very complex Amesim component models only available as non accessible “black-boxes”. The purpose of the work is to develop a model running with the specified time-characteristic in order to be implemented in a test platform, where the whole Landing Gear system can be tested. The book is suitable for engineers who are involved in the development of real-time systems or in working out the inside structure of non-accessible models.