Recently, college students made their own solid rocket
The successful video is on fire
At present, the video has played more than one million
There are more than 6000 bullet screens
It’s shown in the video
A rocket from independent design
To fluid simulation, manufacturing, testing, control
And the whole process of final launch and recovery
“A cloud piercing arrow, thousands of troops will meet”
The screen of netizens is on
In the video
A cool rocket with transparent body
Standing in a field waiting to be launched
“The countdown begins
The rocket blasted off with smoke
Multiple camera positions
Showing the momentum of the moment of launch
And the netizens watching the video are not idle
One after another
“Detection results of normal signal tracking in various places”
“The air attitude is normal
Normal tracking in Shaanxi
Anhui remote sensing monitoring is normal
Sichuan normal observation
Guizhou signal is normal… “
At the same time, netizens willingly sent “admiration” and “surprise”
“I’m so moved that I want to cry”
“Ohhhhhhhhhhhhhh, too 6”
Then the rocket fell
The parachute opened successfully
The rocket landed successfully and was recovered
There have been several failures
In the future, he wants to send express by rocket
It is understood that the author of the video
Also the designer of the rocket is Liu Shang
Studied in Nanjing University of Aeronautics and Astronautics
Aerospace Engineering Major
The rocket designed by Liu Shang is about 96cm high
5 cm in diameter and 3. 1 kg in weight
Different parts used light cured resin, bakelite
Nylon, PC plastic, carbon fiber and other materials
During the outbreak
Liu Shang made the rocket after his online class at home
In the process of development, he has experienced several failures
Model small rocket launch
Failure of solid rocket motor ground test
More than 30 videos on network platform
He has recorded his development process for half a year
Liu shangzeng, still in junior high school, wrote:
The most attractive things to me are model airplane, rocket and chemistry
For seven years, he has been sticking to his love
“My pursuit has never been broken
Hope to turn love into career
Liu Shang’s room
Now, in the face of the successful launch of the rocket
Liu Shang said, “I have a great sense of achievement,
But the ultimate goal is to send it by rocket. “
From 0:00 to 24:00 on March 24, 31 provinces (autonomous regions, municipalities directly under the central government) and Xinjiang production and Construction Corps reported 47 newly confirmed cases, all of which were imported cases from abroad; 4 new deaths; 33 new suspected cases, all of which were imported cases from abroad.
On the same day, 491 cases were cured, 1215 close contacts were removed from medical observation, and 174 severe cases were reduced.
As of 24:00 on March 24, according to the reports of 31 provinces (autonomous regions, municipalities directly under the central government) and Xinjiang production and Construction Corps, there are 4287 confirmed cases (including 1399 severe cases), 73650 cured and discharged cases, 3281 dead cases, 81218 confirmed cases and 134 suspected cases. There were 693223 close contacts and 13356 close contacts still under medical observation.
There are 0 newly confirmed cases (0 in Wuhan), 487 newly cured and discharged cases (472 in Wuhan), 3 newly dead cases (2 in Wuhan), 3828 currently confirmed cases (3794 in Wuhan), including 1368 severe cases (1358 in Wuhan). There were 60810 discharged cases (43686 in Wuhan), 3163 dead cases (2526 in Wuhan) and 67801 confirmed cases (50006 in Wuhan). There are 0 new suspected cases (0 in Wuhan) and 0 existing suspected cases (0 in Wuhan).
From 0:00 to 24:00 on March 24, 47 newly confirmed imported cases (19 cases in Shanghai, 5 cases in Beijing, 5 cases in Guangdong, 4 cases in Tianjin, 4 cases in Fujian, 2 cases in Inner Mongolia, 2 cases in Jiangsu, 2 cases in Sichuan, 1 case in Jilin, 1 case in Zhejiang, 1 case in Shandong and 1 case in Shaanxi) were reported. As of 24:00 on March 24, a total of 474 confirmed imported cases were reported.
In total, 628 confirmed cases were reported from Hong Kong, Macao and Taiwan: 386 in Hong Kong (102 discharged, 4 dead), 26 in Macao (10 discharged), 216 in Taiwan (29 discharged, 2 dead).
Books have opened the door of knowledge for me, enriched my life and brought me to a vast world of freedom. As Gorky said, “Books are the ladder of human progress.” Whenever I open a book, it is like entering a wonderful world, where there are joys, sorrows, joys and sorrows, joys and sorrows.
Books have taught me what is true, good and beautiful and what is false, ugly and evil. Books have become my mentors and friends. Talking about the story of me and the book, I have to start with my first trip to Xinhua Bookstore. On that day, as soon as I walked into Xinhua Bookstore, I was shocked by the numerous books in front of me. I had never seen so many books! Everything, it was a sea of books! So I looked like a greedy “hungry wolf” one after another. That day, for the first time, I realized the charm of books and the joy of reading.
One day, I was holding a book with relish. When I was reading, my mother asked me to buy a bottle of soy sauce. As I read, I went to the shop and opened my mouth and said, “Second child, bring a bottle of soy sauce!” The landlady stared at me and remained silent for half a day. I shouted again, “Son, bring a bottle of soy sauce!” The shopkeeper did not respond, and I suddenly realized that I was speaking in the language of the book. I immediately changed my mouth: “Aunt, I’m sorry, I want to buy a bottle of soy sauce.” Then my aunt smiled and handed me a bottle of soy sauce. On my way home, I couldn’t help but cover my mouth and laugh, laughing at my obsession with reading.
In the fourth grade, I like reading more, and the more I read, the more energetic I am. When my mother saw this situation, she not only did not praise me, but always said that if I was so obsessed with miscellaneous books like “not doing proper work”, I would delay my study. This is another kind of “playful loss of will”. Mother gave me a decree: read less extracurricular books and improve my math scores to the top 10 in my class! Oh my God, who calls my math grades poor? I am like Monkey King with a tight hoop, and have to bow my hands obediently.
How can I live without books? What can I do? What can I do? My brain is running at a high speed, right! I can try the “stealing beam for column” method in 36 plans. I sneaked out the “Singing Cat” from my mother’s bedroom, slipped into my room carefully, put the book gently on the table, pulled out a piece of A3-sized white paper that had been prepared, made a leather bag, and wrote the words “Chinese” on it, and read it. Mother came to my room and saw that I was reading a Chinese book. She walked away. After a while, she felt something wrong. She came to my room again and took my book for a look. It turned out to be an extra-curricular book. Mother criticized me severely. Just as I scratched my ears and scratched my cheeks to think of a solution, suddenly, there was a flash of inspiration! I hastened to say: “Don’t worry, today, the teacher told me a great good news, my essay won the first prize in the district!” Hearing this, the expression on my mother’s face immediately turned into three curves, laughing like a flower. I quickly advised hitting the iron while it was hot and said, “Mom, reading miscellaneous books can greatly help to write essays, from which we can accumulate a lot of ideas and good words and sentences for writing.” Dad was there to talk good. Eventually, my mother agreed that I could read books for half an hour every day without delay.
In this way, I have precious half an hour reading time every day, I can swim in the sea of books. Only when the mind is connected with the book can I feel that life is so colorful. In the book, the vivid characters leap forward and continue my story in their stories. It feels wonderful.