Work

Performance verification of passive vibration isolator for dual-cryocooler assembly

Year: 2026

Type: article

Abstract: Recent trends in satellite miniaturization and mission advancement have increased the demand for the simultaneous detection of mid-wave infrared and long-wave infrared bands. This dual-band infrared detection requires a dual-cryocooler configuration to cool the MWIR and LWIR detectors independently. The dual cryocooler can operate in either single- or dual-compressor operating modes according to the mission requirements, and micro-vibration isolation for each operating mode is required. To satisfy this requirement, we developed a passive vibration isolator for a dual-cryocooler assembly to attenuate micro-vibrations in both operating modes. The micro-vibration isolation performance was predicted based on the basic characteristics of the vibration isolator, and the dynamic behavior of the dual-cryocooler assembly with the vibration isolator was analyzed using finite-element modal analysis. Results of a micro-vibration measurement test demonstrated that the proposed vibration isolator effectively attenuated micro-vibrations better than the rigid condition in both single- and dual-compressor operating modes. In addition, the structural integrity of the proposed vibration isolator was verified through launch-environment tests.

Source: Cryogenics

DOI: 10.1016/j.cryogenics.2026.104496

Authors: Gi-Seong Woo, Hyun-Ung Oh

Institution: Korea Aerospace University

Language: English

Topic: Vibration Control and Rheological Fluids

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $2,980