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A launch escape system is a crew safety system connected to a space capsule, used to quickly separate the capsule from its launch vehicle rocket in case of a launch abort emergency, such as an impending explosion. Such systems are usually of two types: The system is typically controlled by a combination of automatic rocket failure detection, and a manual backup for the crew commander's use. Escape systems have not proven to be practical for more complex spacecraft designs such as the Space Shuttle, mainly because most crew members cannot be seated next to escape hatches.

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  • Launch escape system
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  • A launch escape system is a crew safety system connected to a space capsule, used to quickly separate the capsule from its launch vehicle rocket in case of a launch abort emergency, such as an impending explosion. Such systems are usually of two types: The system is typically controlled by a combination of automatic rocket failure detection, and a manual backup for the crew commander's use. Escape systems have not proven to be practical for more complex spacecraft designs such as the Space Shuttle, mainly because most crew members cannot be seated next to escape hatches.
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  • A launch escape system is a crew safety system connected to a space capsule, used to quickly separate the capsule from its launch vehicle rocket in case of a launch abort emergency, such as an impending explosion. Such systems are usually of two types: * A solid-fueled rocket, mounted above the capsule on a tower, which delivers a relatively large thrust for a brief period of time to send the capsule a safe distance away from the launch vehicle, at which point the capsule's parachute recovery system can be used for a safe landing on ground or water. The tower and rocket are jettisoned from the space vehicle in a normal flight at the point where it is either no longer needed, or cannot be effectively used to abort the flight. These have been used on the Mercury, Apollo, and Soyuz capsules. * The crew are seated in ejection seats as used in military aircraft; each crewmember returns to Earth with an individual parachute. Such systems are effective in a limited range of altitudes and speeds. These have been used on the Vostok and Gemini capsules. The system is typically controlled by a combination of automatic rocket failure detection, and a manual backup for the crew commander's use. Escape systems have not proven to be practical for more complex spacecraft designs such as the Space Shuttle, mainly because most crew members cannot be seated next to escape hatches.
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