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The author of this page will appreciate comments, corrections and imagery related to the subject. Please contact Anatoly Zak.
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"Black Box" for the Soyuz MS spacecraft
Information recording system (Sistema Zapisi Informatsii, SZI-M) The upgraded information recording system, SZI-M, for Soyuz-MS was developed at AO RKS corporation in Moscow with the use of modern, domestically produced electronics. Installed under a pilot seat inside the descent module of the Soyuz, SZI-M acts as a "black box," collecting and storing a multitude of flight data, including technical information, physiological parameters of the crew members and voice communications during the descent and landing. The reusable SZI-M system consists of two memory units and the central UN-M data recorder enclosed into a special shock-absorbent and thermal-protection case. The device can accumulate no less than four gigabytes of data and survive an impact on the ground with a speed of up to 150 meters per second. The UN-M is also designed to withstand a temperature of up to 700C degrees. According to AO RKS, the SZI-M was intended for up to 10 flights and can be safely used for at least 100,000 recording cycles.
Read much more about the history of the Russian space program in a richly illustrated, large-format glossy edition:
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