Technology invades the modern world

Chapter 83 Ignites the Chinese Community (210)

"After optimizing the trajectory prediction algorithm using the above method, its deviation distance can be reduced from the original 6000 kilometers to about kilometers."

Lin Ran put down the chalk and spoke to the densely packed formulas on the blackboard.

There was a polite round of applause, first from the front row, then from front to back.

Lin Ran's formula is very beautiful, making everyone feel that he is worthy of being a master of mathematics. The application of calculus is just right.

Although not all of the NASA executives present are proficient in calculus, they are at least senior talents who have received modern mathematical training. Everyone can still see whether the model constructed by Lin Ran is good or not.

Combining Lin Ran's prediction for Liberty 7 and compared with James Webber, everyone is at least convinced of Lin Ran.

After the applause died down, Lin Ran continued, "It's not enough.

This is not enough.

We also need to do a second step of optimization on it.

There is no way for the algorithm to perfectly predict the initial trajectory because there are always various unexpected events in the rocket's flight trajectory.

Whether it is the vibrations during the rocket launch itself or the unevenness that may exist during the combustion of fossil fuels, these will lead to the accumulation of errors.

At this time, we need to enhance the efficiency of ground computing.

We are currently using an IBM 704, and it takes several hours to simulate a trajectory.

We should pre-run multiple scenario simulations for different launch angles and speeds, and use the results as a trajectory lookup table to reduce the number of real-time calculations.
In addition, when inputting, one person inputs and one person verifies to reduce the error rate of punched cards.

I think Los Amora Laboratory has already been able to do it. You can contact them and ask them to share their experience.

The final step is to optimize the launch window, choosing the time when the moon is closest to perigee, and further simplifying the trajectory calculation.
The combination of these three factors can reduce Pioneer 4's deviation to 0, allowing it to successfully land on the moon."

Finally, Lin Ran drew two balls and a rocket on the little bit of blackboard that was left, and then connected the rocket and the ball with a dotted line.

"President Kennedy will hold a hearing in Congress in August for all senators and representatives, which will affect NASA's full-year budget for next year. We must send Pioneer to the moon before then.

Tell the lawmakers in Washington that NASA doesn't just have valuable experience, we also have successful experience.

There is no such word as failure in my life. Administrator Weber and I came to NASA to bring you success after success!"

James Webber was the first in the audience to stand up and applaud, and the others followed suit. This time the applause seemed somewhat sincere.

Because Lin Ran provided a complete solution for Pioneer's moon landing. At least from their perspective, this solution did not guarantee a successful moon landing, but at least there was a chance of success.

Unlike before, NASA did not even have the confidence to succeed and wanted to bypass the hard landing and directly develop a soft landing.

Lin Ran's speech was full of explosive points, whether it was saying that all the NASA executives present were rubbish, or that NASA would land on the moon in just two months, or Lin Ran saying that he would bring one success after another to NASA.

In short, no matter which point it is, it can attract people's attention.

The New York Times' front-page headline read:
"A Chinese mathematician pointed out that NASA is all garbage, but was applauded by the audience.
Randolph Lin, the White House special assistant for space affairs, recently pointed out in a closed-door meeting at NASA that NASA only has so-called valuable experience in failure, and directly pointed out that all the researchers and engineers present are garbage. His original words were:

"I'm not talking about anyone, I'm talking about everyone here, you're all garbage."

After being publicly ridiculed, Professor Lin demonstrated the orbital prediction model to NASA and proposed a triple optimization plan for the lunar mission.

The Pioneer probe could become America's first lunar lander. Administrator James Webb later supported the idea in an interview with a Washington newspaper: "This isn't a gamble, it's precise mathematics."

"It's like sending a rocket to the moon with a map of every possible way it could get lost," William Pickering, director of the Jet Propulsion Laboratory, said after the meeting.

After this news was leaked to the media by senior NASA officials, various newspapers rushed to report it, and after being reported by American media, it spread to all parts of the world.

Especially in places where there are Chinese people, it caused a violent reaction far beyond imagination.

At this time, Section Chief Zhang had already joined a joint venture company called Hong Kong Shipping, which was jointly established by Chinese ship merchants in Hong Kong, as a new sailor of the company.

Because of his strong physique, rigorous work attitude and excellent learning ability, he soon got the opportunity to join the ship.

However, he could not participate in the most advanced new standardized shipping route because that route required only old people who had worked under Xu Aizhou or Tung Chao Yung for more than ten years.

Newcomers like Section Chief Zhang cannot gain trust.

"Ayuan, I remember you can read, right? Come on, this newspaper really gives us Chinese people a boost!
Take a look. "

That day they were exchanging cargo at Yokohama Port. The first mate saw him enjoying the breeze on the deck, so he walked up to him and handed the newspaper to Section Chief Zhang, who was using the alias Chen Zhiyuan.

In order to match Chen Jingrun's identity, Section Chief Zhang was assigned the identity of a descendant of a declining landlord.

Section Chief Zhang took the newspaper from the other party, the "American Overseas Chinese Daily". The headline on the front page was about someone he was familiar with, and it was also the core reason why he was in Yokohama instead of Yanjing:

林燃
The front-page headline of the "Chinese American Daily" praised Lin Ran to the skies and on earth, making him unprecedented in the world.

It is said that all the top executives of NASA combined are not as good as Lin Ran alone. The moon landing that NASA failed to complete in three years was accomplished in just two months after Lin Ran came.

At present, Lin Ran has only said that he wants to land on the moon, but the "Chinese American Daily" has already said it as if he has already landed on the moon.

After reading it, Section Chief Zhang handed the newspaper back to the other party and said: "This is amazing. You are worthy of being the pride of the Chinese people."

The first mate nodded and said, "All the people sitting below are white people. When a Chinese person pointed his nose at them and said they were all rubbish, not only could they not refute him, they had to applaud along.

Because Professor Lin is better than them.

This scene makes me feel refreshed just thinking about it.

It’s a pity that there were no reporters taking photos at the scene. It would have been great if there were.

The best photo is the one where Professor Lin points his finger at their noses and scolds them.

No, this is really great, I have to have a good drink.

Come on, let's find an izakaya and have a nice drink together. The ship doesn't leave until tomorrow anyway."

While Section Chief Zhang agreed, he was thinking, "Professor Lin is indeed Professor Lin. Is there any way I can get the full text of his speech at NASA?"

The theory he proposed is so powerful, it will surely be very helpful to China.

Now that I'm in New York, I'll have to find a way to contact my 'good son.'"

(End of this chapter)