Whether the "space kiss" can be successful, the "zero window" launch is critical

Xinhua News Agency, Hainan Wenchang, July 24 (Reporter Zhao Ye Ping and Zhang Ruijie) Asked the Tianhe Experimental Curring to be connected with the Tianhe Core Card, this will be the first time that the Long March 5 carrier Rockets will perform the matching task. Experts point out that this launch is facing multiple difficulties such as the heaviest load and the largest size, and the "zero window" launch of the Long March 5 -carrying rocket is a key link to ensure that heaven and heavenly realize the "space kiss".

"In this launch, I asked the Tianjie experimental cabin to be connected rapidly with the sky and the core compartment. Therefore, the Rockets must be launched at the specified time, otherwise the Tianshi experimental cabin will not be able to reach the designated location." Liu Bing, the overall deputy chief designer of the carrier rocket.

The matchmaking docking is like "piercing the needle" in space. In order to complete this task more accurately and reliably, the long five B team "went to three insurances".

"First Insurance" is the "take -off time correction technology". Su Lei, chief designer of the Aerospace Science and Technology Group President No. 5, B's Lange Rocket Control System, introduced: "The" take -off time correction technology "allows the rocket control system to automatically calculate the deviation and adjust the target track. At this time of 0 to 2.5 minutes, any time for launch, the rocket can automatically modify the flight deviation caused by delayed launch during the flight, and send the experimental compartment to the predetermined orbit. "

"This is a bit like a car's autonomous driving technology, but it is not easy for the" car 'that weighs hundreds of tons to be a "car" that weighs hundreds of tons. "Rocket science expert Qian Hang said that the innovation of long five B is controlled by gesture control. Optimization and composite guidance methods have improved the accuracy of rocket posture control.

"Second insurance" is the optimization of the project process. Liu Bing introduced: "The five series of rocket systems are complex, and there are many types of processes in the launch site. We summarize the first 7 launch experience and optimize the launch process of 10 minutes before the shooting. Preparation, if you have any problems, you can find it early and solve it early. "

In order to improve the reliability in all aspects, the "third insurance" of the long five B team includes: comprehensively maintained, maintained, and improved the ground equipment launched by the Rockets; The pushing agent leaked the re -organizational launch plan for further refinement and improvement; further evaluated and converted the rocket's carrier capacity, and threw away the "burden" in the arrow body, which released greater carrier capacity for the Rockets.

[Editor in charge: Wu Yongling]

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