Unfortunately, a shuttle is not ready to step in to help however, in case of a future Russian problem, from equipment failure to political issues, the shuttle could be invaluable.Ĭommercial crew launchers will face an extended period of test flights to discover unknown flaws, present in any new launch system. If the ensuing failure investigation and recovery take an extended time before both Russia and the United States believe the Soyuz is safe for crew launches, ISS operation could be significantly compromised. Since the Soyuz crew vehicle shares its launcher with the Progress vehicle, Soyuz will also be affected. The recent failure of the Russian Progress vehicle has sounded a wake-up call to remind us that spaceflight is a risky business. An uncontrolled re-entry of the ISS could expose large numbers of people around the world to large falling pieces with potentially tragic consequences. If any of this happens, or even one critical module fails, the shuttle could be the only way to either make it functional again or provide for controlled, safe re-entry. In case of ISS emergency: Over the next nine-plus years, the international space station (ISS) will be continually exposed to the possibility of an accident in space that could make it uninhabitable and/or with a loss of control.There are powerful arguments for the United States to continue the space shuttle until a suitable replacement vehicle is available and proven.
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