Shulou(Shulou.com)11/24 Report--

Thank CTOnews.com netizens for the delivery of vegetable clues! CTOnews.com, Nov. 11 (Xinhua)-- A documentary crew looking for wreckage during World War II recently found some debris underwater, according to Engadget. After reviewing the video, NASA confirmed that the underwater wreckage found off the coast of Florida came from the space shuttle Challenger, which exploded in 1986, killing seven people.

The divers who made the documentary noticed that "there is a large man-made object covered with sand on the bottom of the sea", which has a modern structure and is covered with 8-inch square porcelain, which is commonly used in the space shuttle's thermal insulation system. They contacted NASA, who reviewed the video and confirmed its source, and NASA said he was considering additional action on the debris.

CTOnews.com learned that the Challenger space shuttle disaster was a major fatal accident of the US manned space program on January 28, 1986. The space shuttle Challenger disintegrated 73 seconds after takeoff, killing all seven astronauts.

The cause of the accident was the failure of the O-ring used to seal the solid booster on the right side, and the rubber elasticity was limited by the record low temperature during launch, and the sealing effect of the O-ring was greatly reduced. Shortly after the take-off of the space shuttle, the high-temperature combustion gas leaked and burned through the adjacent fuel outer storage tank, which led to the separation of the end parts of the right solid booster and the structural failure of the outer storage tank. After the explosion of the spacecraft, the whole orbiter, including the cabin, was torn apart under aerodynamic force.

After a three-month search, the authorities found the cabin and other parts of the space shuttle at the bottom of the sea. There is no way to verify the exact time when the crew was killed. It is believed that some people were not dead when the Challenger disintegrated, but the orbiter design had no escape function at all, and the cabin rushed to the sea at terminal speed. It was impossible to survive such a violent impact.

The accident halted NASA's space shuttle program for 32 months, and President Ronald Reagan set up a Rogers Commission to investigate. The committee blamed NASA's organizational culture and decision-making process for the accident. As early as 1977, test data showed that the O-ring of solid booster may cause fatal defects, but neither NASA nor Seoko, which makes solid booster, has taken effective measures. NASA managers turned a deaf ear to engineers' warnings about the risk of a low-temperature launch and did not report it to their superiors. NASA later set up the Office of Safety and Mission Assurance to solve security issues, and commercial satellites were changed from the original deployment of manned orbiters to a launch using carrier rockets.

The U.S. federal government approved the construction of the space shuttle Endeavour in 1986, completed in 1990 and flew for the first time two years later. The space shuttle mission has since used a redesigned solid booster, requiring a pressure spacesuit during ascent and reentry.

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