Live Stream 1980: Netizens Teach Me How to Make a Rocket by Hand

Red Star Technology, large conference room.

More than fifty people sat together.

Each person had an enamel mug in front of them.

Through persistent efforts.

Of the more than 100 SSRs, all the ones that can be dug up are here.

Among them is Zhao Qiang, a "clumsy" worker poached from a machine tool factory.

Jiang Jun, who had just paid his daughter's hospital fees and shaved his beard until it was ashen, was a picture of a man.

There was Liu Xiaodong, who was lying on the table, idly twirling a ballpoint pen.

Also present were the original team members, including the general manager He Zhenhua, the factory director Lao of the motor factory, Master Niu, Li Jianguo, Dapao, and Wang Yu.

Lin Xi sat in the main seat, her gaze sweeping over everyone.

If only I could open my third eye at this moment.

You can roughly see a purple aura called "national fortune" rising from above the roof.

This isn't a meeting; it's a military review and a confersence of gods!

"Quiet down."

Lin Xi tapped on the table.

Although he was incredibly young.

But after weathering the storms of the past few months, he has developed that air of authority that comes with being in a position of power.

The buzzing sound in the room disappeared instantly.

"First, announce the group assignments."

"Jiang Jun is the head of the optomechanical group, responsible for the research and development of grating rulers."

"Zhao Qiang is appointed as the head of the precision structure group, responsible for the bed structure design."

"I'll lead the CNC team myself."

"Old He will coordinate the rest."

"Sister Liu!" Lin Xi suddenly called out towards the door.

"Yes! Manager Lin, what are your instructions?" Sister Liu, who was in charge of logistics, pushed open the door and came in.

Lin Xi pointed to the crowd,

"The people in this room are all Red Star's precious darlings."

"From today onwards, the food standard will be: meat must be included every day, and milk will be plentiful!"

"These people use their brains. If anyone loses weight, I'll dock your performance bonus!"

"Okay!"

Sister Liu's shout instantly warmed the previously somewhat reserved and serious atmosphere.

These days, it's better to give someone a big meal than to make empty promises.

But this protectiveness, even extending to their own weight, is more effective than any mobilization slogan.

After a brief exchange of pleasantries, we got down to business.

"Mr. He, let everyone take a look at our motor."

Upon hearing this, He Zhenhua gently placed a motor on the table.

It's the size of a regular thermos flask, with a silver-gray metal casing.

It has precision-machined heat dissipation fins on its surface and a complex plug trailing behind it.

Compared to other industrial motors, it appears too delicate, even somewhat "effeminate".

"Is this our stepper motor?"

Someone in the audience asked,

"Mr. Lin, isn't this the wrong size?"

"I've looked at some imported stepper motors, and they're three times the size of this one."

"Can such a tiny thing really move a ball screw?"

"Don't let the engine stall under heavy load."

The common sense of industry in the 80s: Bigger is better, heavier is stronger.

What is the step angle?

Someone reached out and fiddled with the motor shaft.

"1.8 degrees or 0.9 degrees?"

This question asks about the parameters of a stepper motor.

In this era, CNC machine tools rely entirely on stepper motors to "walk" by "counting steps".

One step, one card; if you miscount, you're doomed.

He Zhenhua looked up, glanced at Lin Xi, and suddenly laughed.

"This is not a stepper motor."

"This motor doesn't need to count steps."

"Not stepping?"

The man was stunned. "Is that a DC motor?"

"Then how do you control the precision?"

"It spins when powered on, but even after power is cut off, it still swings half a circle due to inertia. How do you get it to stay in position?"

"This is not open-loop control."

Lin Xi stepped forward and gently stroked the black cylindrical protrusion at the tail of the motor with his fingers.

The live stream chat was flooding his retina with comments.

Wow! A permanent magnet synchronous servo!

[Is this streamer trying to blast fish in a newbie village from the 80s?!]

This is such a devastating attack! It's like smashing a traditional brick phone with a smartphone!

[This structure was mainstream after 2010, right? Back then, it was absolutely cutting-edge technology!]

These experts are going to have an existential crisis, hahaha!

Lin Xi smiled.

"This is called a servo motor."

The sound wasn't loud, but it was like a depth charge dropped into a fishpond.

"What it carries on its back isn't a counterweight, it's an encoder."

"It doesn't need you to tell it how many steps to turn."

"It will provide real-time feedback on where it has turned and how many degrees it has turned."

"If it goes astray, it will pull itself back."

The entire conference room was so quiet you could hear a pin drop.

Zhao Qiang's mouth dropped open.

As a mechanical genius, he instantly understood the terrifying nature of the place.

A stepper motor is like "a blind man walking".

The controller tells you to take a certain number of steps, but if you slip (miss a step), the controller won't even know.

Servo motors, on the other hand, are "running wildly with their eyes open," and they come with their own positioning and navigation!

"But... what about torque?"

Zhao Qiang was a little skeptical.

"It's too small, the magnetic field strength isn't enough, it has no power at all!"

Neodymium iron boron.

Lin Xi uttered three words calmly.

"Third-generation rare earth permanent magnet materials".

He held up three fingers, his tone calm.

"The torque of this motor..."

"It's three times the price of similar products from abroad!"

boom!

This wasn't just shocking, it was downright horrifying!

The expressions on the faces of the audience were quite varied.

Besides the original core team, most of the staff at Red Star Lab are newcomers with different goals.

Some did it for technical skills, some for their families, some to realize their ambitions, and some simply for better pay.

They were all somewhat arrogant to begin with.

He considers himself an expert because he was begged by Lin Xi, this "youngster".

Before I could even get comfortable sitting down...

Someone casually tossed out a motor.

The design concept was ahead of its time.

The material parameters are three times better than those of foreign counterparts.

At that moment, their pride was shattered.

Lin Xi was pleased to see everyone's stunned expressions.

This show of force has achieved its intended effect.

"It has the heart of a machine tool."

"Next comes the brain of the machine tool."

Lin Xichong and Sun Erga exchanged a wink.

"Okay!"

Sun Erga took out a box.

With a splash, the contents were dumped onto the center of the conference table.

Dozens of small, dark cubes scattered out, making a crisp, clattering sound.

Everyone crowded closer to take a look, and their expressions immediately turned strange.

"Z80?"

An engineer picked up a chip, his brow furrowed:

"Manager Lin, are we going to build game consoles?"

Z80, an 8-bit microprocessor.

In those days, it was most commonly found in simple calculators or in video game consoles that children coveted.

"This is our main control chip," Lin Xi said calmly.

boom--!

The meeting room erupted in chaos.

"Manager Lin, you must be joking!"

The engineer stood up in a panic.

"We're going to build CNC machine tools!"

"This thing is 8-bit! The clock speed is only a few megahertz!"

"Should we assign it to handle complex calculations?"

"This is like asking an ant to pull a train! It's simply impossible!"