Homo sapiens.
Page 237
Because the dandelion airship is not one, but a series.
According to the air density at different heights, the buoyancy of the dandelion airship at each height can be calculated.
5 at 0.001 meters, buoyancy of 2000 tons.
4 at 0.004 meters, buoyancy of 8000 tons.
3 at 0.018 meters, with a buoyancy of 3.6 tons.
2.5 at 0.04 meters, with a buoyancy of 8 tons.
2 at 0.088 meters, with a buoyancy of 17.6 tons.
1.5 at 0.194 meters, with a buoyancy of 38.8 tons.
1 at 0.41 meters, with a buoyancy of 82 tons.
This is the approximate buoyancy of the Dandelion Airship at various altitudes.
Although considering the air flow in the troposphere, it is definitely necessary to use part of the buoyancy on the counterweight, but as the airship gets closer to the sea level, its buoyancy is also rapidly increasing.
Baisha took Zhang Wei, the person in charge of the communications division, to inspect the performance of the vacuum airship today.
"How safe is this airship?"
Bai Sha smiled and explained: "Because of the use of new materials, there are not many problems with safety. The carbon sphere is strong enough to resist large-caliber machine guns or small missiles, but it cannot withstand high-temperature combustion."
Zhang Wei discussed in a low voice with several technicians from the communication department.
After a few minutes, Zhang Wei asked again: "At a height of 3 meters, with a payload of 5 tons, what size airship would be needed? How much would it cost?"
Baisha made some calculations: "Well... about 120 million cubic meters of airship is needed. If we only provide the airship, excluding other equipment, the cost will be around 35 to 40."
"35 to 40?" Zhang Wei turned his head and started talking with the staff of the Communication Division.
He is acceptable for this price.
Because as a communication airship, at an altitude of 3 meters, it can cover a large area of land.
After discussing with a group of communication department personnel, Zhang Wei agreed that this kind of airship is good and can effectively supplement the communication system of Homo sapiens.
Since future low-Earth orbit enterprises are very likely to become a space battlefield for all forces, the stratosphere has become another special space.
Especially in the area at an altitude of 3 to 5 meters, it is difficult for even high-altitude fighter jets to touch it, while ordinary civilian aircraft fly in the airspace below 1.5 meters.
The communication airship can float in a fixed airspace for a long time and serve as a communication base station, monitoring radar, and monitoring remote sensing.
However, Zhang Wei still hopes to reduce the cost: "Group leader Bai, if the payload is reduced to about 1 ton, how much can the cost be reduced?"
"This?..." Bai Sha estimated, "It can be reduced to about 10 for a single ship."
Zhang Wei nodded: "On behalf of the Ministry of Communications, I will start this cooperation with your base to manufacture 100 high-altitude communication airships."
"No problem." Bai Sha had a smile on his face.
Although this kind of cooperation does not have any direct benefits for him personally, it is also a common situation within Homo sapiens.
Improving the communication system is something that will benefit the entire Homo sapiens company, and Baisha has no reason to refuse.
What's more, if there is an order, the airship factory can maintain production. After the Dandelion project is completed in the future, there will be no need to arrange for employees to change jobs, which will reduce some troubles.
In fact, this is also one of Li Qingye's goals in promoting the big project.
By promoting this large-scale project, it will drive the research and development of various materials and technologies, and also provide a large number of jobs for internal employees.
This time, the communication business department took a fancy to the potential of the vacuum airship, and planned to build a batch of communication airships, which are derivatives brought by the Dandelion project.
The communication airship has advantages over the Starlink satellite system in terms of cost and security.
After all, the airship has a relatively large load, relatively low cost, a relatively long service life, easy maintenance, and can stay in a fixed airspace for a long time. The capacity of the communication link is relatively large, and the communication distance is relatively short.
Although the cost of the Starlink satellite itself is not high, the problem is that this thing needs a carrier rocket to launch it.
Based on the Falcon launch vehicle's single launch quotation of 6200 million US dollars, 60 Starlink satellites can be launched at one time, and the launch freight for a single Starlink satellite is 103 US dollars. It costs $5.
Plus the cost of the satellite itself.
This cost is not friendly at all.
Moreover, the service life of Starlink satellites is worrying, the communication density is relatively small, the distance from the surface is relatively long, and they cannot be fixed in an airspace. These are all problems.
A vacuum airship that solves the problem of safety and buoyancy maintenance. If it carries a payload of 1 ton, it can achieve a communication density of about 20 tons and can cover an area with a radius of hundreds of kilometers.
This price/performance ratio is really too high.
Chapter 4 Derivatives ([-])
Bai Sha had just sent off Zhang Wei and his party, and before they had rested for two hours, people from another department also came to the door.
The person who came was Jaguf, the deputy general manager of Ceylon Ocean Transportation Group.
After reading the introduction of the Dandelion Airship, Jaguf showed a very interested look on his face:
"The new type of airship you are studying is good. I am very optimistic about its transportation potential, especially for us to develop the African market and consolidate island logistics in the Pacific Ocean."
In the recently established West Pacific branch, many of the places are small islands, and the distances are relatively far away, so they cannot build underground railways like the Nanyang Islands.
Over there now can only rely on planes and ships.
But the volume of transportation by plane is too small, and the speed of ships is relatively slow, which is not conducive to the development of these islands by the company.
According to the data provided by Baisha, Jaguf believes that vacuum airships have great potential. Although the Ceylon Ocean Shipping Group he belongs to is mainly responsible for shipping in the Ceylon Ocean, it is also their responsibility to develop the African market.
The coastal areas of Africa are okay, and the ports of some small countries are patchy and barely usable.
But the inland area of Africa is almost a barren land. Not to mention railways, there are not many roads, and the airport facilities are very simple.
This is obviously not conducive to the "investment" and "development" of Homo sapiens companies.
If a batch of transport airships can be built, Homo sapiens will soon be able to deepen its influence on the inland areas of Africa with cheap industrial products and food.
"Leader Bai, what kind of support do you need for your airship's lifting and docking requirements?"
"Because we use vacuum to provide buoyancy, buoyancy control is very simple. The landing site only needs to be flat, even if there is no cement hardened site, you can land safely."
Jaguf was even more satisfied when he heard that.
Compared with the hydrogen airship, which has hidden safety hazards, or the helium airship, which requires the use of rare gases, the vacuum airship is very good in all aspects.
As for the fear of fire, the airship can be wrapped with a layer of flame-retardant material, or directly installed with airgel protective armor.
Jaguff made a rough estimate in his heart.
A transport airship with a payload of 2000 tons, a self-weight of 580 tons, and a total weight of 2580 tons.
大概规格是长度700米、高度80米、宽度60米,真空容积240万立方米,总浮力在3160吨左右。
Its flying altitude is below 5000 meters, its daily sailing altitude is 1000 meters, its limit speed is 200 kilometers per hour, and its operating speed is 150 kilometers per hour.
He shared his thoughts with Baisha.
Baisha reminded: "Manager Jaguf, why don't you adopt a larger configuration?"
"Larger configuration?"
Baisha immediately proposed an enhanced transport airship with a length of 1500 meters, a total vacuum volume of 1440 million cubic meters, and a total buoyancy of 18576 tons at sea level. After deducting the dead weight of the body of 3000 tons, there is still 1.5 tons of buoyancy.
Hearing this plan, Jaguff did not make a decision immediately, but asked:
"How much is the cost?"
"Because transporting airships requires special engines and power systems, the cost is about 400 million."
"400 million? This price is not bad." Although Jaguf thought it was a bit expensive, the transportation volume of this airship was more suitable.
After all, to build a transport ship with a deadweight of 1.5 tons also costs 600 million U.S. dollars, which is equivalent to 300 million gold dollars.
The speed of transporting airships can be about 10 times faster than that of ordinary transport ships.
However, considering the situation in various parts of Africa, Jaguff felt that it was necessary to install protective armor, cruise missiles and machine guns on the transport airship.
Otherwise, it is necessary to specially transform a batch of transport airships.
He hasn't spoken his mind yet.
The people from the External Security Department also arrived.
Baisha felt a little helpless, feeling that today was really lively.
The people from the External Security Department are the heads of the Equipment Department and the Sky Department.
Obviously, the people in the External Security Division are also very concerned about the various new technologies within the company.
As soon as they heard about the vacuum airship some time ago, they organized an internal seminar to discuss whether the airship could be used in the security field.
Although in the last century, airships have proved unsuitable for air combat.
However, this time and that time.
At that time, airships were eliminated by aircraft and missiles because of technical and material problems.
The Air Force Division and Equipment Division re-evaluated the war potential of airships under the current technical conditions in internal seminars, and then they found that the military value of airships is not small.
Especially the vacuum airship, the huge payload in the troposphere, and its huge volume are all things that can be used.
According to the simulation design of the External Security Division.
They plan to design an aerospace carrier with a total payload of about 3 tons, which can carry Seahawk fighter jets, large drones, and gamma ray cannons that are currently being developed.
As for the large size of the space carrier, it is easy to be detected by radar.
After discussion, the External Security Department felt that this problem was not a problem.
The reason for this conclusion is magnetic field radar and gamma ray cannon.
No, it's impossible to hide.
It doesn't matter, as long as the space carrier can detect enemy aircraft and missiles in advance, it can use the gamma ray cannon to clear the approaching targets.
What is an invisible airship?
As long as the enemy's attack methods are ineffective, the sky carrier is an invisible airship.
Moreover, according to the assessment of the External Security Department, there is a high probability that the space carrier will not directly confront the great powers in a short period of time, and its target may be those second-rate and third-rate forces.
In this way, there is no need to worry.
Bullying those little shrimps is more than punching a child.
Therefore, the External Security Division directly approved the space carrier project, and planned to build 5 ships in the first batch to verify the idea.
Hearing the equipment department's thoughts, Bai Sha said with some embarrassment on his face:
"Our factory's production capacity is not enough, and we need to produce communication airships and transport airships."
Of course, the person in charge of the equipment department knew the production capacity of this factory, so he directly stated his plan:
"It doesn't matter, you share the technology with us, and then send a few engineers to help. The External Security Division has its own airship factory."
"That's not a problem." Bai Sha breathed a sigh of relief.
However, since Baisha didn't know the existence of the gamma ray cannon, he reminded with some concern: "Will the Helicarrier be too conspicuous? There is no way for this thing to be invisible!"
"Don't worry! The External Security Division has its own solution."
Hearing that the External Security Division had a solution, Bai Sha nodded, but did not continue to ask about the specific content. He still knows how to measure this kind of military project.
After agreeing with the person in charge of the equipment department on the time for the technology transfer and confirming the contact plan for that time, the other party left in a hurry.
But the people from the Ceylon Ocean Transportation Group are still here.
After all, the External Security Division has its own airship factory, and the design details must be handled by itself, so there is no need to stay here.
However, Jagufu needed to discuss the design details with Baisha and put forward some requirements, so as not to run around all the time.
Since the External Security Department has decided to develop the space carrier, there is no need for civilian transport airships to be equipped with too heavy armor. Jaguff only retains a micro-drone launcher and 6 defensive cannons.
Then he signed a cooperation agreement with Madagascar Space City on behalf of Ceylon Ocean Group, planning to produce 100 1.8-ton transport airships in the next three years.
Just a sub-project of the Dandelion project has brought a lot of new technologies, which is the derivative effect of large-scale projects.
Chapter 4 Derivatives ([-])
And the Dandelion project derivatives are not just that.
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