Petri Nets Applied in Purge Algorithm Analysis for a Rocket Engine Test with Liquid Propellant

During the development stage of a space vehicle, instrumented tests are carried out on ground to prove operational capacity each liquid-propellant rocket engine, which is installed in this type vehicle. The task elaborating Test Bench project for propulsion unit with application complex and involves several steps, one these steps being related analysis bench meet algorithms rocket-engine full run tests, considered fundamental project’s success. Due high costs involved elaboration execution, it strategic use computational resources evaluate, by simulation, main functionalities that previously established perform. In context, work presents model proposal through Petri Nets computer an architecture was designed algorithm dedicated pipelines purge during hot engine. method used carry simulation shows response module architecture, accordance contained algorithm, allows analyzing, event process, properties, mainly those conservativeness, liveliness, deadlock-type, confusion-type conflicts. proposed portrayal physical states system according foreseen showing conservation property met because number marks remains constant, vivacity also since all positions have been reached, there no mortal-type conflict, as not stopped; only conflict identified, solved insertion order fix crashes competition tokens transition-enabled entries. satisfactory results obtained simulations suggest modules provided sufficient appropriate carrying will minimize or even eliminate disorders may be caused presence foreign elements propellant supply lines