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DJZ-4型振动疲劳试验台是直九型飞机地面试验设备之一,是在法国宇航公司提供的原型试验机外观照片和频率匹配器的试验要求及试验结果等极少量文字资料的基础上进行研制的。在研制中依据我国的国情,对原型机的总体布置、具体结构、试验夹具等进行了很多有益的改进和探索,取得了好的结果,使该设备达到并部分超过了原型机的水平。本文具体地阐述了在研制和改进中所遇到的技术难点,解决的途径,进行改进的原因及其好处。
DJZ-4 vibration fatigue test bed is one of the straight nine aircraft ground test equipment, is provided by the French aerospace company prototype test machine appearance and frequency matching test requirements and test results on the basis of a small amount of text data Developed. In the course of research and development, according to the national conditions of our country, many useful improvements and explorations have been made on the overall layout, concrete structure and test fixture of the prototype machine. Good results have been achieved and the equipment has reached and partially exceeded the level of the prototype machine. This article elaborates the technical difficulties encountered in the development and improvement, ways to solve, the reasons for the improvement and its benefits.