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由航空工业部第四规划设计研究院和613研究所共同研制设计,河南沁阳县防腐工程公司绝缘材料厂研制生产的直径十一米高精度玻璃钢球形屏幕已顺利加工、安装完毕。这是我所飞机火控系统地面仿真试验室中重设备之一。 84年3月27～29日河南省科学技术委员会组织了有关研究所,高等院校和工厂共27个单位对我所这座大型球屏幕进行技术鉴定。认为球屏幕方案先进,设计合理,制造质量合乎要求,主要攻击区域半径误差不大于0.9％,其他区域半径误差不大于2％。
Design and Research Institute of the Fourth Ministry of Aeronautic Industry and the 613 Institute jointly design and development, Henan Qinyang Anxious Engineering Company insulation materials developed and manufactured by the diameter of 11 meters high precision glass steel spherical screen has been successfully processed, the installation is completed. This is one of the heavy equipment in the ground simulation lab of my plane’s fire control system. March 27, 1984 to 29 Henan Science and Technology Commission organized a total of 27 institutes, institutions of higher learning and factories on my large ball screen for technical appraisal. It is considered that the ball screen scheme is advanced, designed reasonably, and the manufacturing quality meets the requirements. The radius error of the main attack area is not more than 0.9% and the radius error of other areas is not more than 2%.