this is something that i learned in class today and this a copy from wikipedia
The
Space Shuttle Challenger disaster occurred on Tuesday, January 28, 1986, when
Space Shuttle Challenger broke apart 73 seconds into its flight, leading to the deaths of its seven crew members. The
spacecraft disintegrated over the Atlantic Ocean, off the coast of central Florida, United States, at 11:38 am
EST (16:38
UTC). Disintegration of the entire vehicle began after an
O-ring seal in its right
solid rocket booster (SRB) failed at liftoff. The O-ring failure caused a breach in the SRB joint it sealed, allowing pressurized hot gas from within the solid rocket motor to reach the outside and impinge upon the adjacent SRB attachment hardware and
external fuel tank. This led to the separation of the right-hand SRB's aft attachment and the
structural failure of the external tank.
Aerodynamic forces promptly broke up the orbiter.
The crew compartment and many other vehicle fragments were eventually recovered from the ocean floor after a lengthy search and recovery operation. Although the exact timing of the death of the crew is unknown, several crew members are known to have survived the initial breakup of the spacecraft. However, the shuttle had no escape system and the astronauts did not survive the impact of the crew compartment with the ocean surface.
The disaster resulted in a 32-month hiatus in the shuttle program and the formation of the
Rogers Commission, a special commission appointed by
United States President Ronald Reagan to investigate the accident. The Rogers Commission found that
NASA's
organizational culture and decision-making processes had been a key contributing factor to the accident.
[1] NASA managers had known that contractor
Morton Thiokol's design of the SRBs contained a potentially catastrophic flaw in the O-rings since 1977, but they failed to address it properly. They also disregarded warnings from engineers about the dangers of launching posed by the low temperatures of that morning and had failed to adequately report these technical concerns to their superiors. The Rogers Commission offered NASA nine recommendations that were to be implemented before shuttle flights resumed.
Many viewed the launch live because of the presence on the crew of
Christa McAuliffe, the first member of the
Teacher in Space Project. Media coverage of the accident was extensive: one study reported that 85 percent of Americans surveyed had heard the news within an hour of the accident. The
Challenger disaster has been used as a case study in many discussions of engineering safety and workplace ethics.
this is the seven crews
biasa la tu...manusia sentiasa buat silap...manusia merancang, Allah yang tentukan
