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Oscillations In An LC Circuit01:30

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Fabrication and Testing of Microfluidic Optomechanical Oscillators
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Long-term frequency aging for unpowered space-class oscillators.

Martin Bloch1, John Ho, Oleandro Mancini

  • 1Freq. Electron. Inc., Mitchel Field, NY, USA. martinb@freqelec.com

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|November 28, 2009
PubMed
Summary

Unpowered space oscillators maintain performance over decades, crucial for mission reliability. This study provides data to predict backup oscillator aging for long-duration space missions.

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Area of Science:

  • Spacecraft engineering
  • Electronic component reliability
  • Materials science

Background:

  • Spacecraft clock performance is critical for mission success.
  • Backup oscillators are often unpowered for extended periods.
  • Limited data exists on the long-term aging of non-operating space-rated oscillators.

Purpose of the Study:

  • To provide empirical data on the long-term aging of unpowered oscillators.
  • To aid in estimating the performance of dormant oscillators for space missions.
  • To validate worst-case analyses for oscillator reliability.

Main Methods:

  • Analysis of aging rate data from dormant temperature-controlled crystal oscillators (TCXOs).
  • Analysis of aging rate data from dormant oven-controlled crystal oscillators (OCXOs).
  • Evaluation of oscillators that have been unpowered for decades.

Main Results:

  • Empirical evidence on the aging performance of unpowered oscillators is presented.
  • Data quantifies the aging rate of dormant TCXOs and OCXOs.
  • Findings offer insights into the long-term stability of backup oscillators.

Conclusions:

  • The study provides essential data for predicting the performance of unpowered backup oscillators.
  • Findings support the reliability assessment of oscillators for long-duration space missions.
  • This research contributes to validating engineering analyses for spacecraft clock systems.