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一.前言在进行飞机设计时,必须正确计算作用于机体的阻力、升力及力矩等空气动力。为满足这种需要,最有力也是最可靠的手段就是很久以来所用的风洞。在风洞内放置样机
I. INTRODUCTION During the design of aircraft, the aerodynamic forces such as drag force, lift force and moment acting on the body must be correctly calculated. The most powerful and reliable means of meeting this need is the wind tunnel used for a long time. Place the prototype in the wind tunnel