Encyclopedia Astronautica
1999.11.04 - ISS Status Report: ISS 99-43

Routine operations continue aboard the International Space Station this week as flight controllers monitored systems and made the usual checks of its orientation and spin rate.

The five batteries on Zarya used to store the Sun's energy and convert it to electrical power are in cycling mode. Periodically, each battery is cycled to ensure its health and maintain its life. Battery 1 continues to remain disconnected from the electrical bus and is likely to be replaced during the next Shuttle visit scheduled for the spring of 2000.

Again this week tests were performed of the command path to Zarya from Mission Control, Moscow, using Unity's early communications system and to Unity from Mission Control in Houston, via the Komparus computer system inside Zarya.

All other Station systems are in excellent shape as it orbits at an altitude of 245 by 226 statute miles. Since the launch of Zarya last November, the ISS has completed more than 5,470 orbits. S

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