A spaceborne cryogenic cooler induces undesirable microvibration disturbances during its on-orbit operation, which is one of the main sources that degrades the image quality of submeter-level high-resolution observation satellites. Several types of vibration isolation systems based on passive approaches have been developed for reducing the microvibration of the cooler. A coil-spring-type passive vibration isolation system developed in a previous study has shown excellent performance in both launch vibration and on-orbit microvibration isolation. To improve the capability of the conventional cooler isolator, including the position sensitivity and launch vibration reduction, we propose a new version of a dual coil-spring-type passive vibration isolator system. The effectiveness of the newly proposed design was validated through a microjitter measurement test, position sensitivity test, and qualification-level launch vibration test of the isolator.

中文翻译：

---

星载冷却器被动发射和在轨振动隔离系统的性能增强

星载低温冷却器在轨道运行期间会引起不良的微振动干扰，这是使亚米级高分辨率观测卫星的图像质量下降的主要来源之一。为了减少冷却器的微振动，已经开发了几种基于被动方法的隔振系统。在先前的研究中开发的螺旋弹簧式被动隔振系统在发射振动和在轨微振动隔离方面均表现出出色的性能。为了提高常规冷却器隔振器的性能，包括位置灵敏度和降低发射振动，我们提出了一种新版本的双螺旋弹簧式被动隔振器系统。