N-A-A Chapter 404
Chapter 404
Indeed, the
wheels of the plane look small, compared to the huge fuselage.
It's actually not small at all.
Take the Boeing 737, a large passenger aircraft, for example, a wheel with a diameter of more than 1 meter and a weight of more than 70 kilograms.
It was the small and medium-sized passenger plane that Lu Zhe and they were on, and the diameter of the wheels was close to 0.8 meters and weighed more than 40 kilograms.
Although the designers made the wheels as light as possible, because of the load requirements, the width of the tires is almost twice that of the car, and the thickness is higher, so the single aircraft wheel is still much heavier than the wheel of the same size car.
A cow pulling may not be able to pull a car made of such wheels.
Two cows?
It may be possible to pull, but again, because the wheels are too heavy, too much energy may be wasted.
It's a bit worth the loss!
The good news is that the two main landing gear of this aircraft have a total of 8 wheels, and Lu Zhe can even turn when he moves the wheels.
I think the aircraft has good closure, coupled with the landing compartment is located at the bottom of the cabin, there is air pressure resistance, so that seawater is extremely difficult to penetrate into the landing compartment, which indirectly protects the landing gear and wheels.
And the aircraft wheel does not provide power because it is flexible itself, so there is only a certain sense of damping, and the bearing can be used.
Shen Bing saw Lu Zhe's embarrassment: "Otherwise, let's make a wooden wheel!" Like the ancients!
Lu Zhe was a little embarrassed: "That process is a bit complicated!"
Shen Bing said, "Don't you have a hundred thousand whys? "
Frankly speaking, Lu Zhe's system manual is still there, but he needs more tools.
"The ancient method of making wheels requires logging tools, although the aircraft accessories tools are exquisite, but not this specialty, the only hand saw can only see some wooden boards and fiberboard, then it is a little difficult to make regular wooden blocks, you can't use a chisel from beginning to end to carve it."
Shen Bing nodded: "Yes, the tools do not match, it will only be half the effort." Hey, Lu Zhe, what tools do we need to make it? We are not without that condition.
Lu Zhe pondered for a while: "Some things need special materials, such as saws, and you have to use iron sheets with very good hardness and toughness to make saw blades to cut relatively flat wood." There is also the planer, the wooden part of the thing is very easy to make, the key is the sharp little iron plate, which must have a fairly high hardness. Our existing furnace temperature and ironmaking technology is difficult to make this kind of thing.
"That... Have the materials on the plane been taken into account?
Lu Zhe touched his chin and nodded: "Actually, I've been thinking about it since I saw these big wheels!" I just don't know if it works!
Shen Bing's eyes suddenly lit up: "I thought that in the early years, Japanese military aircraft were shot down, and the local people used the iron pieces on the wings to directly open their teeth to make saw blades, which were not bad for many years." "
There is such a thing?"
Shen Bing nodded affirmatively: "What I saw on the news seems to be a place called a mentor."
"Well, I'll take a look!"
Lu Zhe jumped onto the broken wing, touched left, right, and then touched the aileron of the plane, and the skinned information came to his mind!
It turns out that this thing is called skinning!
Chisel the paint off the skin, revealing the sheet metal.
One more touch, and the message of titanium skin came to my mind!
Lu Zhe is overjoyed!
This long piece of titanium alloy iron wrapped around the aileron is completely a high-quality material for sawing!
Moreover, not only ailerons, but also longer flaps, the steel frame is wrapped in this titanium alloy!
You can make more than just one saw!
What else to say, let's do it!
Lu Zhe got a bunch of hand tools and began to dismantle the wings of the plane.
Professional aircraft maintenance tools are used to remove aircraft parts.
Soon, he removed the ailerons!
Pull off the nails and pry open the metal plate, which is made of carbon fiber sheet.
Remove the plates and set aside.
Next, Lu Zhe chose a flat place and drew the shape of the saw blade on it with a pencil.
Use the wire in the toolbox to cut the metal skin and obtain a piece of iron one meter long and 4 cm wide.
Next is the opening of teeth!
Sharpen the chisel!
Place the iron sheet flat on the wood, use a chisel to get out of the teeth, then polish it a little, and then break the gear flow left and right to increase the cutting force of the saw and prevent it from being added between the gaps.
Finally, punch holes left and right with nails!
Next, the saw is stabilized, specifically by straightening it!
The bamboo board of Lu Zhe's thick bamboo is used as the frame of the frame saw, and the middle is a support rod, and one side of the frame is connected to the saw blade, and the other side is connected to the rope.
Finally, twist the rope with a short wooden stick and let the rope tighten.
The tighter the rope, the straighter the saw blade at the other end will be pulled, and when it is straight, the saw is ready for use!
Lu Zhe tried to use it to saw a small tree, and it fell in a few strokes.
But just having a saw is not enough, you also need a planer, in order to get the right planer, this time, Ning Shu put forward her suggestion!
With brake pads!
As a tungsten-manganese alloy that can withstand a high temperature of more than 3400 degrees, it has the characteristics of high hardness and high wear resistance!
It's just a bit hard to get it down!
One wheel was removed, and there were four layers of brake pads stacked on top of each other.
This thing is to provide power through hydraulics, squeeze these four layers of brake pads, and complete the braking.
Lu Zhe took a look at it.
There are eight small brake pads attached to the first layer of brake pads, each 1.5 cm thick!
Isn't this a good way to grind a blade?
However, Lu Zhe grinded for half an hour and found a problem:
he has great strength, it stands to reason that he can sharpen a knife and an axe in a few minutes, even if the pig iron grinding method is thin!
But now the stones have been sharpened into a big groove, and the small brake pads have not changed at all!
Lean, sloppy!
People call it brakes!
Why should I listen to Ning Shu's nonsense and polish this kind of thing!?
Find something else!
Soon, Lu Zhe found a broken steel frame on the steel frame of the wing and touched the material... Superduralumin.
I don't know if this is okay!
Lu Zhe removed a piece of polishing, which is indeed much easier than grinding brake pads!
But it also took nearly two hours to sharpen the blade.
Then break it with a chisel, polish the fracture smoothly, and a planer is made.
The next step is simple.
He sawed out a rectangular piece of wood with a small hand saw, smoothed it, chiseled it out, installed the handle, and a hand push planer was ready!
It's late to do this!
The next day, you can directly make materials for wheels.
However, since it is to make wheels, it must be firmly carried, and the stronger the texture of the wood, the better, and the palm trees, banyan trees and mangrove trees that are the most common near the camp are not suitable.
Lu Zhe remembered that there was a forest on the other side of the freshwater lake, and there were some rare and expensive woods there!
Think about it, how high it should be to use South Sea yellow pears or red acid branches to make ox carts?
Thursday, December 14, the 190th day of exile on a desert island.
Lu Zhe decided to get a piece of wood and come back to make an ox cart.
When the ox cart is ready, you can use the ox to pull the wood back.