U.S. Space Exploration Technologies announced on the 17th that it will attempt to make the rocket "precise landing" on the unfloating offshore floating platform when it performs the fifth International Space Station cargo mission on the 19th.

The company, founded in 2002 by billionaire Elon Musk, said in a statement on the same day that as part of the plan to develop a reusable rocket, the success rate of the trial was at most 50%, but it was "a series of similar For the first time in the test, it will eventually bring the first level of the fully reusable 'Falcon 9' rocket."

At present, most rockets in the world are one-time delivery systems and cannot be reused.

The difficulty of this test was first to make the rocket return smoothly. The statement said that the "Falcon 9" rocket has a 14-story building. When it rises at a speed of 1,300 meters per second, it needs to let its first-stage rocket separate and return smoothly. The difficulty is like "Making a rubber broom in a storm." Balance is in the palm of your hand."

Second, the rocket's "precise landing" is extremely difficult. Earlier this year, the first level of the Falcon 9 rocket successfully achieved a soft landing on the sea twice, that is, the rocket was vertically and smoothly falling. However, according to the statement, the challenge for the rocket to land accurately on a floating platform on the sea is much greater. More complicated is that this platform is not only anchored, the area is only 9 meters wide, 30 meters long, and the wingspan length is only about 50 meters. The length of the first level of the Falcon 9 rocket is about 20 meters. "In the previous test, we only hoped that the landing accuracy was within 10 kilometers. For this test, our landing accuracy should be within 10 meters."

According to the plan, Space Exploration Technology will use the Falcon 9 rocket and the Dragon spacecraft to transport feeding and experimental equipment to the International Space Station on the 19th.

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