Introduction of Research

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Research for Secure Development and Success of Missions
Research on spacecraft life extension

The life extension of spacecraft implies prolonging the operating lives of spacecraft. A major prerequisite for this outcome will be that integrated spacecraft components and parts maintain their integrity without degrading or breaking apart. How reliable and durable they remain during their operating lifetimes will be key.

Our research aims to mature technologies capable of improving the durability of battery power sources, upgrading the reliability of the attitude control subsystem, and extending the design lifetime of mechanical parts to prolong the lifetime of the existing LEO satellites from 7 to 12 years.

 

The Value of Our Research

Spacecraft development is typically a long, difficult, and expensive process. Improving the reliability of spacecraft subsystems and extending operating lifetimes ultimately improve the cost-effectiveness of a spacecraft and enhance its international competitiveness.

 

Research Goals

The research has twofold aims: first, to develop technologies capable of extending the lifetimes of key components and parts in order to prolong the operating lives of LEO satellites; second, to mature accelerated testing techniques in order to speed up satellite development.

 
Improving the durability and prolonging the lifespan of secondary batteries in spacecraft power subsystems
Lithium-ion battery
  • Accumulations of battery life tests (including ground test and on orbit flight data)
  • Improvement of battery life prediction
  • Study of accelerate test condition for battery life assessment
  • Study of battery health monitoring method
 
Improving the reliability of attitude control devices
High-speed flywheel (S type)
  • Conducting continuous, long-running tests to collect more reliability- and lifespan-related data on attitude control devices such as reaction wheels and TDG-IRU
  • Maturing techniques to assess the reliability and lifetime of attitude control devices
 
Research on Long-life and High-performance Bearings
Space-qualified ball bearing
  • Extending Life and Reducing Vibration for Rolling Element Bearing
  • Life Prediction and Accelerated Testing for Rolling Element Bearing
  • Alternating Technology for Rolling Element Bearing: Hydrodynamic Bearing
 
Life time tests of mechanical cryocoolers
  • Life time tests and analysis of the cryocooler engineering models
  • Research on life time extension for cryocoolers
 
Research on Long-lived Mechanical devices for Space Exploration
Typical seals for lunar sand
  • Long-lived Dust Seals for Lunar Sand
  • Long-lived Mechanical Devices in Cryogenic Condition
  • Research on Lubricants and Oil Seal for High Speed Lunar Rover
 

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