As Columbia Space Shuttle launched, foam insulation came off and damage left wing’s thermal protection system. The heat of reentry destroyed the left wing and lead to the breakup of the orbiter. Challenger and Columbia Space Shuttle accidents are examples of human error and negligence. The Challenger suffered from negligence with no room to blame human imperfections. Engineers wanted to delay Challenger’s take-off; because warmer temperatures produce better launch probability.
The top section of the building tilted to the east and to the south and began its descent. The time from aircraft impact to collapse initiation was largely determined by the time for the fires to weaken the perimeter columns and floor assemblies on the east and the south sides of the building. World Trade Center 2 collapsed more quickly than World Trade Center 1 because there was more aircraft damage to the building core, including one of the heavily loaded corner columns, and there were early and persistent fires on the east side of the building, where the aircraft had extensively dislodged insulation from the structural steel. The World Trade Center towers likely would not have collapsed under the combined effects of aircraft impact damage and the extensive, multi-floor fires that were encountered on September11, 2001, if the thermal insulation had not been widely dislodged or
Kim Zaring Kenneth Smith English 1101 (crn 80128) Research Paper 13 November 2010 Devastation It was a normal morning on September 11, 2001, when the United States had a horrific attack that took place on our soil for just the third time in our history. There were four planes that had been hijacked, and these planes where being operated by terrorists. Two of the planes were flown directly into the two towers of the World Trade Centers that was located in New York City. The first plane hit the north tower of the World Trade Center around 8:46 A.M. (911 timeline). The second plane hit the South tower of the World Trade Center around 9:02 A.M. (911 timeline).
At the Seattle-Tacoma Airport, in Tacoma, Washington, he released thirty-six passengers and two crew members once his demands were met (Pasternak). After taking off again Cooper ordered the plane to fly at a low altitude towards Mexico. At 8:13pm pressure gauges recorded his jump over the Lewis River from 10,000ft into a thunderstorm with over a hundred mile per hour winds and negative temperatures wearing only a thin suit, wrap-around sunglasses, and a rain coat (Brad Meltzer's Decoded). Many people believe that this was a suicidal jump and that Cooper died that night (Mysterious Disappearances in U.S. History). A reporting error in this high interest case mixed up his name forever immortalizing him as D.B.
The actual collapse was apparently due to such severe structural damage and the eventual snapping of support beams. Although…due to investigations carried out by many scientists and experts we now know that this is just not plausible. (A building made to be able to handle terrorist attacks and severe fire just gives way less than an hour after impact.) This makes me very suspicious. Once the first plane had struck the north tower there was obviously explosions in approximately 3 floors around the impact zone, but another explosion occurred almost 20 floors below…this explosion was nothing to do with the impact of the aircraft but something far more devious, explosives.
18 minutes after the first plane hit, a second United Airlines Flight appeared out of the sky and suddenly turned toward the World Trade Center and plowed into the south tower near the 60th floor. The collision caused an explosion that threw burning debris over nearby buildings and the streets below. Americans then realized they were under
The incident occurred at an altitude of some 200,000 feet, shortly after reentry and 15 minutes before Columbia had been scheduled to land at Cape Canaveral. TIME science correspondent Jeffrey Kluger explains some of the possible causes and consequences of the accident: TIME.com: What are the possible scenarios that could have caused this disastrous accident on the shuttle's reentry into the Earth's atmosphere? Jeffrey Kluger: There are three possible scenarios that explain this event. The first, which I believe is the likeliest explanation, would be an aerodynamic structural breakup of the shuttle caused by it rolling at the wrong angle. Remember, after reentry, the shuttle is descending without power, which means astronauts at the controls can't compensate for a loss of attitude by using the engines, they can only do so using the flaps.
Michael Squillacote 9/28/11 Professor Blum Business paper Challenger Shuttle The Challenger space shuttle was set off to launch on January 28th 1987. This turned into a tragic day for NASA and the United States. At 11:38 am Challenger took of from the launch pad. Everything was going smoothly until 73 seconds into the flight the shuttle disintegrated over the Atlantic Ocean killing seven astronauts. There are a few different theories on what went wrong to the shuttle.
It then traveled through the D ring and into the C ring. CNN has some good footage from a security camera that captured the plane striking the ground. All 58 passengers, four flight attendants, and both pilots on board, as well as 125 occupants of the Pentagon, died. Although the blast from the plane and the toxic gas and heat from the resulting fire killed some people in their offices near the crash site, some people working inside the Pentagon that morning did not know that a plane had hit their building. Military and civilian personnel running up and down the corridors yelling for people to get out helped to save a lot of lives.
* Frederick L. Ashworth flew with Sweeney in Bockscar and was responsible for arming the bomb. * The primary target was the city of Kokura. Nagasaki was the secondary target. * Bockscar’s reserve fuel tank was not pumping fuel correctly so the plane could not make use of the extra 600 gallons. * About 40,000 people died in this mission.