Igor Vainshtein, Shlomi Baruch, Itai Regev, Victor Segal, Avishai Filis, Sergey Riabzev 

RICOR Cryogenic & Vacuum Systems, En Harod Ihud 18960, Israel 

ABSTRACT 

 The growing demand for EO applications that work around the clock 24hr/7days a week, such as in border surveillance systems, emphasizes the need for a highly reliable cryocooler having increased operational availability and optimized system’s Integrated Logistic Support (ILS). In order to meet this need, RICOR developed linear and rotary cryocoolers which achieved successfully this goal. 

Cryocoolers MTTF was analyzed by theoretical reliability evaluation methods, demonstrated by normal and accelerated life tests at Cryocooler level and finally verified by field data analysis derived from Cryocoolers operating at system level. 

The following paper reviews theoretical reliability analysis methods together with analyzing reliability test results derived from standard and accelerated life demonstration tests performed at Ricor’s advanced reliability laboratory. As a summary for the work process, reliability verification data will be presented as a feedback from fielded systems. 

Keywords: Cryocooler, Integral Rotary, Split Linear, Stirling, Weibull distribution, MTTF, RICOR, ORT. 

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