Essay On Challenger Space Shuttle

January 28, 1986, at 11:38am, one minute until the Challenger space shuttle lifted off, the weather was bad, but still have lot people drove to and watch the launch at that freezing day, people don’t know the bad weather are leading to a disaster, actually the engineer already warn that the launch are extremely dangerous at such a cold day, at 11:39am, the Challenger space shuttle took off, few second later abnormal black smoke comes out from the roll booster, around 45 second after took off observed triple time flash from the right side of roll booster, from 58 second the right side of the propeller start having fracture, tremble, large fuel spills, and ignite the main fuel tank, 73 second later after the challenger launched, the explosion occurred. Seven astronauts killed in this accident, president Reagan order to set up a committee immediately, to

Their list the major problem caused this disaster: The O-ring. The O-ring that use to fixation on the right side roll booster are lost efficacy, the O-ring have a temperature scope limit, and the ambient temperature was too cold that already out of range that O-ring can be sustain, and the duty of O-ring is seal ring for seal the fuel tank, but freezing temperature make the O-ring distorted, therefor, it didn’t reach to the place it should be, lead to the fuel leak. As soon the shuttle took off, there’s black smoke comes out from the roll booster, means the thermal insulation material, the O-ring, and the lubrication oil are all ablation by the fuel gas, after 15 seconds the smoke turn to licking flame because the thruster are increase the thrust, few seconds later the exhaust flame are showing up, meanwhile the data showing on the screen in the control center can tell the two roll booster are having different pressure, means the reveal at right side roll booster are increasing because it have lower pressure than left