simonbp writes "NASA's Constellation Project has approved the Rollercoaster Escape System to be used as the Emergency Egress Systems (EES) for astronauts and pad crew to race away from the Ares I pad, should an emergency be called. The Ares I is the first of NASA's new moon/Mars rockets and is scheduled for a first manned flight in 2014." From the article: "An unpowered fixed single-rail system from the access arm level of the ML tower to the existing bunker would be used. The railcars could be enclosed to provide personnel protection. Each railcar can hold four to six people. The rail would follow the ML tower vertically down to the pad surface, then turn and continue close to the ground to the safety bunker. A passive magnetic and friction braking system will decelerate the cars at the tracks end as well as prevent the cars from hitting each other."
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