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NASA completes separation of Mars 2020 landing platform

via:cnBeta.COM     time:2019/10/6 13:31:00     readed:98

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When the Mars 2020 probe enters the Martian atmosphere, a series of complex events will be involved at the last minute before landing, while using 2 more advanced technology than the Curiosity probe.

When the probe reaches the upper atmosphere of Mars at hypersonic speed, it will be protected by aerodynamic insulation plates and shells, which will not only block the heat entering the atmosphere at deceleration, but also provide some lift. When it drops to supersonic speed, the parachute system will slow it down.

After the spacecraft dropped its cruiser and insulation at an altitude of 1 mile (1.6 km), the lander would fly at a speed of 170 mph (274km / h). At this time, the detector and its connected downcomer are detached from the shell in the state of free fall.

Shortly afterwards, eight reverse rockets on the descent platform will ignite. Not only will it slow down and land safely, but it will also be able to use its terrain relative navigation (TRN) system to find a safe landing site and move toward it -- the first time such technology has been used to land on Mars.

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When the ship is at an altitude of 66 feet (20 meters), it drops at 1.7 miles per hour (2.7 kilometers per hour). At this point, Sky Crane began to appear. The explosion bolt detonates and the rover is separated from the landing platform.

After the separation, the four rocket engines were shut down. When the lander wheels touched the ground, the rope was cut off by more pyrotechnics and the descent platform flew at least 492 feet (150 meters) away from the landing site.

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NASA said that once the JPL hardware and computer tests were completed, the detector and descending platform would be sent to Cape Canaveral Air Force Base in CHO and paired with the ULA Atlas V launch scheduled for launch in July 2020.

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