Abstract: Bond graphs have been shown to be useful in modeling of a wide variety of physical dynamic systems.A unique feature of bond-graph techniques is that they provide the modeler with a graphical representation of the causality (i.e.the input-output relationships)in the underlying system.In this paper,bond graphs of variable-thrust rocket engine system are developed and governing state space equations are derived.

Key words: System simulation;Liquid propellant rocket engine;Mathemati cal model

摘要： 简要介绍利用键图建立数学模型的原理。针对BYF-03双组元液体推进剂变推力火箭发动机系统,画出该系统的键图,并列出用状态变量表示的数学模型。

关键词: 系统仿真;液体推进剂火箭发动机;数学模型