Off-normal Situations Related to the Operation of the Electron-VM Oxygen Generation System aboard the International Space Station 2005-01-2803
The Electron-VM Oxygen Generation System (OGS) is a main source of oxygen for crew breathing on the International Space Station (ISS) and the result of updating the Electron-V OGS that has been in successful operation for 17 years on Mir Space Station. The successful accomplishment of a manned flight program primarily has resulted in the stable operation of the system.
The paper deals with analysis of off-normal situations related to the operation of the Electron-VM on board ISS. The system switching-off analysis based on the telemetry information processing and the results of the additional tests conducted under flight and ground conditions is performed.
A principal cause of system switching-offs is a reduction in the pressure built by the circulating pumps due to ingress of gas bubbles into the suction pipeline. The results of the Electron-VM OGS switching-off analysis and the practical recommendations regarding its prevention are reviewed.
The serviceability restoration technique for the Electron-VM's key unit (the liquid unit) has been developed and tested under manned flight conditions. The liquid unit has been restored under flight conditions and being integrated in the Electron-VM is currently operated successfully on the ISS.
Citation: Kurmazenko, E., Samsonov, N., Gavrilov, L., Farafonov, N. et al., "Off-normal Situations Related to the Operation of the Electron-VM Oxygen Generation System aboard the International Space Station," SAE Technical Paper 2005-01-2803, 2005, https://doi.org/10.4271/2005-01-2803. Download Citation
E. A. Kurmazenko, N. M. Samsonov, L. I. Gavrilov, N. S. Farafonov, Ju. E. Belavencev, N. V. Pavlova, V. Ju. Proshkin, S. Ju. Romanov, A. G. Geleznyakov, A. M. Ryabkin, G. A. Lyubimov, O. V. Kirushin