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Low Vibration Microminiature Split Stirling Cryogenic Cooler for Infrared Aerospace Applications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ihud, En Harod |
| Copyright Year | 2012 |
| Abstract | The space-borne infrared instrumentation is known to be inherently susceptible to a cryocooler induced vibration, the attenuation of which usually relies on actively multi-tonal momentum cancellation. In this approach, the typical single-piston expander is actively counterbalanced by a motorized counterbalancer and the typical dual-piston compressor is counterbalanced by synchronizing the motion of the opposing moving pistons working in the “master-slave” mode. The feedback signals are usually provided by external vibration sensors (load cells or accelerometers). Although compliant with the most stringent space requirements, such a conservative vibration control approach can result in using outdated, oversized, overweight and overpriced cryogenic coolers for some applications. Such a "space heritage" practice becomes increasingly unacceptable for space agencies now operating within tough monetary and time constraints. The authors are advocating the purely passive approach to a vibration control relying on the combined principle of tuned dynamic absorber and low frequency vibration isolator. This concept has a potential to outperform the systems of active vibration cancellation with respect to overall system effectiveness and warrants particularly strong consideration for cost-sensitive missions. The initially target is the “Operationally Responsive Space” programs, which may well be satisfied by this approach. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ricor.com/wp-content/uploads/file/Low%20Vibration%20Microminiature%20Split%20Stirling%20Cryogenic%20Cooler.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
