XB高精度火箭橇试验滑轨

XB High Accuracy Rocket Sled Test Track

火箭橇试验滑轨是一种大型地面动态模拟试验设备 ,用于研究试验件在空中高速度、高加速度运行时所遇到的诸多技术问题 ,其技术核心是一百万分之一的轨道直线性相对精度。它要求具有稳定的滑轨基础、高直线度准直基准线和光滑平顺的钢轨作为基本条件 ,需要采用钢轨精密机械加工、钢轨焊接、焊缝超声波探伤、轨道张拉锚固锁定、轨道直线度调整等新工艺技术。我国已成功地建成世界上唯一的、钢轨经精密机械加工后再全程焊接的XB高精度火箭橇试验滑轨。文章论述了它的诞生背景、设计思路、技术方案、技术与建造特点以及应用展望 。

Rocket sled test track is a large ground dynamic simulating test facility.It is used for the tudy of solving technical problems that occurred to the testing articles during their operations at high speed and high acceleration in the sky.The constructional key point of the track is the track's relative linearity precision of one millionth.A stable track foundation,high linearity base line and smooth and surface bright rails are the foundamental conditions for the track.It needs also many new technologies,such as the specially machined rails,rail welding techniques,supersonic flaw detecting for welding,prestress tie down of the track,straightness alignment,etc.China has successfully built the world's only track—XB high accuracy rocket sled test track,of which the rails are specially machined and then welded continuously.This paper describes the background,design approach,technical plan,measurement data,applications,future prospects as well as the technical and constructional characteristics of the track. It indicates the linearity of the track has reached advanced world level. [