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On September 30, the jet propulsion laboratory under NASA confirmed that its 14th flight on the surface of Mars failed due to the abnormality of the Martian helicopter ingenuity. But the mission team is optimistic that the helicopter will take off again soon < p > NASA originally planned to make its 14th flight to the smart on September 18. This is a relatively short and simple jump, which will demonstrate the ability of Ji Zhi's rotor to fly at a slightly higher speed, but the test flight was unsuccessful < p > Jaakko Karras, deputy director of JPL operations, said that the mission team was making adjustments to respond to changes in the Martian atmosphere. Because as the seasons change, the air at the bottom of yezelo crater becomes thinner < p > wit conducted a high-speed rotation test on September 15. It was still on the ground and rotated the rotor at 2800 revolutions per minute. The test went well and was ready for the flight on September 18. However, the helicopter did not take off that day < p > carras wrote: "the thing is this: during the pre flight self-test, the smart found that two small flight control servo motors were abnormal, and cancelled the flight according to the predetermined procedure." < / P > < p > there are six servo devices on the smart, three on each of the two rotors. The motor can adjust the pitch of the rotor, allowing the helicopter to control its direction and position during flight. Carras wrote: "the servo motor undertakes a lot of work, which is very important for stable and controllable flight." < / P > < p > the analysis of the pre flight test on September 18 shows that the two servo motors of the smart have a slight swing during the so-called "servo swing" inspection. Karas wrote that the team is still trying to determine the cause, but it may be due to increased wear of the servo gearbox and connecting rods < p > wit passed two additional "servo swing" tests on September 21 and 23, respectively. Carras wrote: "it can be seen that the above problems do not happen repeatedly. We have many tools to deal with abnormal situations. We are optimistic that we can get through this difficulty and start flying again soon." < / P > < p > however, the change of planetary orbit will at least put wit at rest in the next few weeks. Mars is now separated from the earth on both sides of the sun, which may destroy or otherwise interfere with the communication between the two planets, so NASA has stopped sending orders to the wit and the Mars rover perseverance. Until mid October, Mars will appear more clearly in people's vision < p > carras wrote: "during this period, the smart will not be completely idle. It will maintain weekly communication with the perseverance and send basic system health information to the base station carried by the perseverance. After this period of time, we will receive these data on earth and understand how the smart will perform during a relatively static period on Mars." (small) < / P > < p >

2023-03-22 10:04:45