Columbia Accident Investigation Board Report Volume I by Columbia Accident Investigation Board, National Aeronautics

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By Columbia Accident Investigation Board, National Aeronautics and Space Administration

Volume 1 of a six quantity set. Investigates lack of the gap travel Columbia, STS -107, and its seven-member staff on February 1, 2003. 4 components entitled: The coincidence; Why the twist of fate happened; a glance forward; and Appendices A, B, C. Concludes with thoughts.

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Extra info for Columbia Accident Investigation Board Report Volume I

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There were no problems during the burn, after which Husband maneuvered Columbia into a right-side-up, forward-facing position, with the Orbiterʼs nose pitched up. m. (Entry Interface plus 000 seconds, written EI+000) over the Pacific Ocean. As Columbia descended from space into the atmosphere, the heat produced by air molecules colliding with the Orbiter typically caused wing leading-edge temperatures to rise steadily, reaching an estimated 2,500 degrees Fahrenheit during the next six minutes. As superheated air molecules discharged light, astronauts on the flight deck saw bright flashes envelop the Orbiter, a normal phenomenon.

Flight: GC: Flight: “GC, – Flight. ” Having confirmed the loss of Columbia, the Entry Flight Director directed the Flight Control Team to begin contingency procedures. 44 Report Volume I In order to preserve all material relating to STS-107 as evidence for the accident investigation, NASA officials impounded data, software, hardware, and facilities at NASA and contractor sites in accordance with the pre-existing mishap response plan. At the Johnson Space Center, the door to Mission Control was locked while personnel at the flight control consoles archived all original mission data.

An analysis of the External Tank/Orbiter interface loads, using simulated wind shear, crosswind, beta effects, and liquid oxygen slosh effects, showed that the loads on the External Tank forward attachment were only 70 percent of the design certification limit. The External Tank slosh study confirmed that the flight control system provided adequate stability throughout ascent. 6, respectively. 5 The Solid Rocket Booster burn rate is temperature-dependent, and behaved as predicted for the launch day weather conditions.

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