Chapter 275 Isn't this making things difficult for me, Fat Tiger?

On the projection screen, that Bharal was still displaying jumping abilities on the cliff face that defied the laws of physics.

However, Li Jiajun had already withdrawn the gaze that had been extremely excited due to his epiphany.

"Whew..."

He exhaled a long, stale breath and rubbed his slightly throbbing brow.

Although the sudden burst of inspiration just now had allowed him to solve the problem of "high rigidity," or in other words, "waist strength," this high-intensity mental activity was truly taxing on his brain cells.

"The third problem is finally settled."

"With this [Antelope Horn Lattice Support Technology], the Fishing Rod produced will be absolutely rigid. Even if two cows were hooked up to pull against it, as long as I don't let go, it definitely won't bend."

A confident smile appeared on the corner of Li Jiajun's mouth.

He picked up the requirements document he had placed on his lap again.

His gaze moved downward.

His smile receded slightly.

Because there was another headache-inducing metric below.

That was—lightweighting.

[Core Metric Three: Low Density and Lightweighting]

[Requirement: While ensuring the aforementioned high strength (T1100 grade) and high modulus (300 GPa), the density must be strictly controlled between 1.75 – 2.0 g/cm³. Even lower is better. Note: The weight is only 25% of steel and 60% of aluminum alloy of the same volume.]

Looking at these emotionless lines of data, Li Jiajun rubbed his chin, feeling a bit of a toothache.

"Tsk..."

"This guy is really just talking without feeling the pain."

Li Jiajun was speechless.

'You want the horse to run, but you don't want it to eat grass.'

'You want it to be as strong as a steel plate, but as light as a feather.'

This was the most typical and hardest-to-reconcile contradiction in materials science.

You have to know, usually, the most direct way to increase the strength and rigidity of carbon fiber is to increase the packing density of carbon atoms or increase the content of the resin matrix for bonding.

But this would inevitably lead to an increase in density.

Yet now, this "Seasoned Old Angler" Netizen was demanding that the weight be reduced while maximizing performance parameters.

"This is simply making things difficult for Fat Tiger."

Li Jiajun muttered to himself as a complaint.

But he didn't intend to give up.

After all, he had already overcome the three perverted-level difficulties before this; there was no reason to drop the ball at this final step.

"If I can't even achieve lightweighting, then this isn't a perfect Fishing Rod."

"Fishing with a dead-heavy stick isn't leisure; that's weightlifting."

"Even those sturdy young men from the Air Force probably wouldn't be able to swing it many times."

Li Jiajun shook his head and forced himself to perk up.

Since conventional material stacking wouldn't work, he could only start from the structure again.

"I still need to find inspiration."

He glanced at the Bharal still frolicking on the screen and felt that this episode's sheep had no remaining value to squeeze.

Therefore.

He picked up the remote control and casually switched to the documentary channel.

The image flashed.

From that cliff face that was so steep it made one dizzy, it instantly switched to a cloudless, crystal-clear blue sky.

The shot was an extremely wide angle.

In the center of the screen.

A golden eagle with a wingspan of over two meters was spreading its broad wings, using the rising air currents to elegantly circle and soar in the sky.

It hardly needed to flap its wings to hover in the air for a long time, just like a glider.

That posture possessed both the dominance of a king and a sense of freedom.

From the speakers came the magnetic voice of Teacher Zhao Zhongxiang narrating:

"In order to adapt to life in flight, the body structure of birds has undergone tremendous evolution."

"Especially birds of prey; they need to patrol for prey in the air for long periods, yet also possess powerful explosive force when diving to hunt."

"This requires their bodies to be light enough, but their bones must be strong enough to withstand the huge impact during hunting."

"Therefore, their bones have evolved to be hollow and strong..."

Hearing the words "hollow and strong."

Li Jiajun's originally somewhat lazy posture instantly straightened up.

His pupils contracted slightly, and he stared intently at the screen.

On the screen.

To intuitively demonstrate this characteristic, the documentary used CG technology to show a cross-section of one of the golden eagle's wing bones.

He saw that the bone, which looked thick and powerful, was surprisingly not filled with solid bone marrow inside.

Instead, most of it was empty!

However.

This emptiness was not devoid of anything.

On the inside of the bone wall, countless tiny, bone-like pillars, resembling architectural trusses, were densely distributed.

They crisscrossed, forming delicate triangular or polygonal structures.

These internal microscopic pillars were like the steel beams used when building a bridge; although they looked slender, they cleverly supported the entire outer wall of the bone tube.

This not only ensured that the bone would not break or be crushed when subjected to external force but also greatly removed excess bone tissue, reducing weight.

"This..."

Li Jiajun stared blankly at the screen.

Looking at the close-up showing the cross-section of the bird bone.

That delicate internal support structure, like an architectural truss, ensured strength while greatly reducing weight.

This masterpiece of nature was simply more perfect than any weight-reduction scheme designed by human engineers.

"Hollow..."

"Truss..."

"Support..."

Li Jiajun muttered these words unconsciously.

His mind seemed to be sucked into that hollow bird bone at this moment.

He was no longer the toy factory director sitting in his office.

Instead, he had become an observer of the microscopic world, wandering through the internal corridors of the golden eagle's wing bone.

He saw how those tiny bone frames distributed pressure.

He saw how air flowed inside the bones.

Gradually.

The image before his eyes changed.

It was no longer white bones, but had turned into strands of black carbon fiber.

If... what if every micron-level carbon fiber filament was also made into this hollow structure?

If this bionic truss support was also built inside the fiber?

In that case.

For the same volume, the amount of material used would be reduced by more than half!

The density would plummet!

But the strength and rigidity, because of the existence of the internal support, would not have the slightest attenuation, and might even be stronger!

'This is... true lightweighting!'

Li Jiajun's gaze became unfocused again, and he completely fell into a state of self-forgetfulness.

All sounds around him disappeared.

Only in his mind, the microscopic model that was being rapidly constructed and formed became clearer and more perfect.

Just at this moment.

That electric sensation, familiar enough to make his scalp tingle, swept through his whole body again.

[Ding!]

[You observed the mechanical structure of hollow bird bones, combined with porous materials and micro-weaving theory, and instantly grasped the preparation process for low-density, high-strength composite materials! You have had an epiphany regarding [Raptor Bone Bionic Hollow Fiber Technology]!]

Li Jiajun woke up with a start.

He gasped for air, as if he had just flown a lap at ten thousand meters high with that golden eagle.

But in his eyes, a light of extreme excitement flickered.

It was done!

A brand-new plan that could greatly reduce material density by constructing micro-hollow structures while ensuring strength had already taken shape in his mind.

The fourth technical bottleneck—lightweighting—was declared broken.