Ingles producto 6

Esc. Sec. Tec. No. 64.

“Jaime Sabines Gutiérrez”.

English.

Product 6.

Anthology of a historic event report.

“Explotion of Challenger”

 3-i Students:

 Valeria Abigail Flores Carrillo #13

Estephany Fernanda Zapata Chávez #39

Teacher Ana María Villalobos.

To 18 of february of 2015

The Challenger, after Columbia was the second American space shuttle orbiter type to fly in space. Its first flight was made on April 4, 1983 to early 1986 had successfully completed nine missions.

The Challenger, like orbiters built after it had fewer tiles in its thermal protection system that Columbia, allowing you to carry more than 1100 kg payload latter ship.

With that change, the Challenger became the "beast space charge" official shuttle fleet of NASA, flying more missions per year than its predecessor.

On January 28, 1986 was scheduled a new takeoff to undertake the Challenger STS-51-L mission, the tenth operation orbiter. As always, all eyes of the scientific world were on the United States to witness the colorful launch that despite being almost routine, it was still spectacular.

However, things started badly from the start. A few seconds takeoff, the booster rocket began to fail, opening some boards from fuel tank, letting out a black smoke and causing the ship propelled by the head before.

At 58 seconds into the flight, the Challenger had a moment of instability (or moment Q) when crossed by a strong gust of wind. The open joints, which had temporarily closed aluminum scrolls contained in the fuel, reopened.

A column of fire then escaped and began to burn liquid hydrogen from the external fuel tank. With the fire spreading rapidly, the ship was exposed to uncontrolled aerodynamic forces.

At 73 seconds of the moment of takeoff, when the Challenger was already turned into a giant fireball, the spacecraft disintegrated almost completely, the compartment where the crew bolted traveling intact in a fireball and continued up five kilometers before falling. The fall lasted more than two minutes. There was no parachute to slow the descent, no exhaust system.

Incidentally killing all seven astronauts aboard, including teacher Christa McAuliffe Elementary, who was to travel into space thanks to an initiative of President Ronald Reagan, allowing the incorporation of civil space programs.

The news, which was televised all over the world, caused consternation throughout the world. The accident, the most striking of the Space Shuttle program, also seriously damaged the reputation of the NASA like space agency.

The same NASA, which had estimated the chances of a catastrophic accident during launch (the most crucial and dangerous space travel time) in a ratio of 1-438, indeed must temporarily suspend their space flights until 1988.

A subsequent investigation concluded that the accident was caused by a sum of elements, including technical, climatic and human factors were counted. If the STS-51-L mission had been successful, the next shuttle mission would have been the deployment of the Ulysses probe with the Centaur, to study the Sun's polar regions.

The shuttle Challenger, the first night takeoffs and landings made, was landmark because it marked several milestones in spaceflight. It carried into space in 1983 the first American woman (Sally Ride) and the first African American (Guion Bluford), and develop three missions Spacelaby the first autonomous walk in space.

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