航天模型，顾名思义是仿航天器外形制作的一种可回收模型，隶属于航空模型，是供运动用的一种不载人的飞行器，其动力为模型火箭发动机，即一种微型固体火箭发动机。由于航天模型多呈火箭状，故通称火箭模型。换句话说，火箭模型是指不利用气动升力去克服重力，而是靠火箭模型发动机推进升空的一种航天模型；它装有使之返回地面的以便再次飞行的回收装置；为确保，它的结构部件必须由非金属材料制成。

Aerospace model, as the name suggests, is a recoverable model made by imitating the shape of spacecraft, which belongs to aviation model. It is a kind of unmanned aircraft for operation. Its power is model rocket motor, that is, a kind of micro solid rocket motor. Because space models are mostly rocket like, they are generally called rocket models. In other words, the rocket model is a kind of space model, which is propelled by rocket model engine instead of using aerodynamic lift to overcome gravity; It is equipped with a recovery device to make it return to the ground safely so as to fly again; To ensure safety, its structural components must be made of non-metallic materials.

模型火箭虽小，然而它要靠火箭模型发动机推进才能在大气中飞行。因此，设计和制做火箭模型需要多方面的知识，如空气动力学、火箭飞行力学等。要研究火箭模型在空气中飞行的稳定性和空气对它的阻力；要分析火箭的飞行轨迹，计算它的飞行高度；有条件时，还可以对模型火箭进行风洞试验，确定火箭外形；进行模型火箭发动机静态性能测试试验，测量推力和工作时间，计算总冲量。

Although the model rocket is small, it can fly in the atmosphere only when it is propelled by the model rocket engine. Therefore, the design and manufacture of rocket model need many aspects of knowledge, such as aerodynamics, rocket flight mechanics and so on. It is necessary to study the stability of the rocket model flying in the air and the resistance of the air to it; It is necessary to analyze the flight path of the rocket and calculate its flight altitude; If conditions permit, wind tunnel test can be carried out on the model rocket to determine the shape of the rocket; The static performance test of the model rocket engine is carried out, the thrust and working time are measured, and the total impulse is calculated.

在发达的一些高等学校里，在理工科有关的课程上，甚一些中学的物理课上，教师们经常以火箭模型作为讲课的题材，并在此基础上指导学生开展一些课题研究和火箭模型的制作。

In some colleges and universities in developed countries, in science and engineering related courses, and even in some middle school physics classes, teachers often take rocket model as the subject of lectures, and on this basis, guide students to carry out some research and rocket model production.

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