On an interesting day of 7th May Saturday 2022 in Hainan Province –China –People’s Republic of China…. Clear Day in the district area of the Wenchang – Wenchang Spacecraft launch center in which the awesome team at one of many CNSA –China National Space Administration that China National Space Administration………….. In which is preparing for the The starry sky is vast, and there is no end to exploration. On May 10th 2022, the Tianzhou-4 cargo spacecraft will be launched on the Chang Zheng Long March 7 Yao-5 Carrier Rocket. In this mission, Tianzhou-4 will not only perform the task of dispatching “space express”, but also undertake the work of refuelling the Tianhe core module. In addition, the Tianzhou-4 cargo spacecraft will also accompany the Shenzhou-14 crew that will enter the space station to stay in orbit for 6 months.
On the 8th May 2022 , the launch of the Tianzhou-4 cargo spacecraft completed the last regional joint training. At present, the weather conditions of each system in the launch site area and during the launch window meet the launch conditions ….The Chang Zheng- Long March 7 Yao 5 Carrier Rocket/Tianzhou 4 cargo spacecraft completed the last joint training in the whole region, and the weather conditions on the launch day are currently predicted to meet the launch requirements. The end of the joint training indicates that the systems in the region are ready to carry out the launch mission, and the refuelling and pre-launch preparations will be completed in the follow-up. ….
For the first time, the Chang Zheng Long March 7 Yao-5 carrier rocket uses the Beidou satellite navigation system as the first priority for navigation reception] In the launch mission, to achieve the rendezvous and docking between the cargo spacecraft and the Tianhe core module, it is necessary to precisely push the cargo spacecraft to the Tianhe core The space orbital plane where the capsule is located, which requires that the rocket must be fired and lifted off according to the predetermined time, within milliseconds. In order to better adapt to the failure situation and improve the rocket’s ability to launch on time, the Chang Zheng Long March 7 Yao-5 carrier rocket uses the iterative guidance algorithm to expand the launch window.
Shen Dan, deputy chief designer of the Chang Zheng Long March 7 Yao-5 carrier rocket Launch Vehicle Model Office of the Aerospace First: Even if the deviation from the standard take-off time is less than two minutes, it will find a suitable route by itself in the air, so that we can meet the space station according to the project. The given moment and spatial location of the general requirements.
In addition, it is worth mentioning that the Chang Zheng Long March 7 Yao-5 carrier rockets used the Beidou satellite navigation system as the first priority for navigation reception for the first time.
Shen Dan, deputy chief designer of the Chang Zheng Long March 7 Yao-5 carrier rocket Launch Vehicle Model Office of the Aerospace Department: That is to say, after the rocket takes off, the navigation is given priority by Beidou. We have also fully tested this change. The assessment is still very reliable. In addition, the reception of navigation can also be switched. When the positioning accuracy of a certain navigation system does not meet the real-time requirements, it can also be automatically switched to other systems to ensure reliable flight. In terms of the rocket engine system, YF-100 and YF-115 have also completed a number of technological and technical improvements, which have improved the reliability of the power system and made the rocket safe……
Official announcement! Yang Hujun, chief designer of the Long March 9 heavy-duty carrier rocket It has made important contributions to the design, first flight and the complete success of the remote three to five missions, the technical reset of the remote two missions, the overall model and the technology of each sub-system. As the chief designer of the Long March 9 heavy-duty launch vehicle, he is mainly responsible for key technology research, in-depth [Officially announced that the chief designer of the Long March 9 is Yang Hujun] Yang Hujun, born in 1974, has participated in the model development for more than ten years as the deputy chief designer of the Long March 5 and Long March 5 B rockets since the Long March 5 rocket project was established. Important contributions have been made in key rocket technology research, overall design, first flight and the complete success of the remote 3 to 5 missions, the technology of the remote 2 mission has been reset to zero, the overall model and the technology of each sub-system have been mastered.
Demonstration of plans, overall design and technical mastery of each sub-system….In 2020, Yang Hujun became the chief designer of the Long March 9 heavy-duty launch vehicle, and is now mainly responsible for key technical research, in-depth demonstration of plans, overall design, and technical mastery of each sub-system. The Long March 9 is a heavy-duty launch vehicle with a larger take-off scale, stronger carrying capacity, higher complexity and greater difficulty in development than the Long March 5. It is a necessary guarantee for significantly improving the overall level of national aerospace science and technology and the comprehensive strength of engineering technology. , is a powerful guarantee for enhancing national self-confidence and enhancing international competitiveness
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