Dynamic Modelling of the SABRE Engine Using Simscape

Complete system modelling is now an integral part of any design process, both for de-risking project and design decisions, and providing system data when experimental measurements are not possible. With the development of the SABRE (Synergetic Air Breathing Rocket Engine) ground test, the dynamic modelling of the complete system is tantamount to the design of the engine itself. The engine cycle of SABRE is one of complexity and high coupling, involving multiple pieces of turbomachinery, heat exchangers, valves and ducting. This engine cycle has been modelled in Simscape™ using a mixture of built-in and bespoke blocks to provide a test environment in which both the operability of the engine can be designed and the extremes of the system tested.