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Life Tests Results of a Controlled Pump Assembly for Application on S/C Cooling Loops
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English
Abstract
This paper presents life test data of two controlled pump assemblies continuously running since September 1993. The tests, running on FLUOROCARBON CCIF2 - CCIF2, are still in progress (Current date May 1997).
One pump operates at the design point, the other one at 3 different RPM's.
Reliability considerations lead to a novel, sensorless, brushless DC motor of very high reliability. Given is an outline of the extensive environmental test compaign and Micro-G tests, with results.
Pump performance data taken prior and after the environmental tests, performances after 1 and 3 years of continuous operation are given and compared. Up to now, after 3 years of operation no pump degradation can be detected.
A pre-runner of the above pumps, featuring the same bearing design is continuously running since November 1990 with no observable degradation.
Citation
Reusser, P., De Parolis, M., and Desjean-Amould, M., "Life Tests Results of a Controlled Pump Assembly for Application on S/C Cooling Loops," SAE Technical Paper 972351, 1997, https://doi.org/10.4271/972351.Also In
References
- Proceedings of the 4 th European Symposium on Space Environmental and Control Systems Florence, Italy 21-24 October 1991 A Controlled Pump Assembly For Two-Phases Loops Applications De Parolis M. N. Reusser P.
- SAE Technical Paper series 941469 A controlled Pump Assembly For Application on S/C cooling loops De Parolis M. N. Reusser P.
- 24 th International Conference on Environmental Systems and 5th European Symposium on Space Environmental Control Systems Friedrichshafen, Germany June 20-23 1994