Because the airship has an advantage over faster aircraft in carrying out surveillance missions, it can hover over the target area for a long time, which allows the reconnaissance instruments on it to detect the target accurately and efficiently. Pen, fun, pavilion www. biquge。 info

In addition, at low speeds, the on-board radar can more easily detect small targets.

The airship here, which belongs to the soft airship, is now the most advanced airship in the world, although many electronic devices on it have been removed, but its advanced degree is also unparalleled.

Generally speaking, from the structural point of view, airships can be divided into three types: hard airships, semi-rigid airships and soft airships.

A rigid airship is an airship that maintains its shape and rigidity with an internal skeleton (made of metal or wood, etc.), covered with skin on the outside, and a number of free-standing airbags filled with gas that provide lift to the airship.

The semi-rigid airship retains its shape mainly through the pressure of the gas in the airbag, and the other part also relies on a rigid skeleton.

As the name suggests, the soft airship is not supported by a skeleton, and the biggest advantage of such an airship is that it is easy to disassemble and transport.

Since they had already prepared for the fifth sword, Yu Shan didn't say anything more, he went back and forth between the Eastern Wilderness Secret Realm and the earth again and again, until he brought enough helium to blow the entire airship up.

Looking at the behemoth in front of him, Yu Shan was shocked again, no wonder the fifth knife them, they wanted to use more than a dozen tree stumps as pillars, if they were used less, Yu Shan was really afraid that it would fly away by itself.

"The sky here is not as safe as you think, so you must not fly above three hundred meters at an altitude." Yu Shan looked at the airship that seemed to be about to fly at any time, and solemnly reminded.

"Three hundred meters? Why? The height of this giant camphor tree is more than 300 meters, where is the danger? Yu Shui finished his work, walked over and just heard Yu Shan's reminder, and asked strangely.

Yu Shan said: "Maybe it's no problem to exceed nine hundred meters, but no matter how high it is, I can't guarantee it." ”

"Is there danger above this height? Maybe it's because of this unknown danger that the sky here is so quiet? Fifth Knife immediately asked.

Yu Shan shook his head and said: "I don't know, this is just my speculation, I once observed this planet outside the Eastern Wilderness Secret Realm, it was indeed suppressed by the Demon Suppression Tower, and the reason why we easily entered and exited the Eastern Wilderness Secret Realm was entirely because of the aura on this planet."

The aura here is being absorbed by the Demon Suppression Tower all the time, and we are following the passage through which the Demon Suppression Tower absorbs the spiritual energy, entering and exiting here, so, I suspect that there is a ban in the entire air, otherwise, it is impossible for there to be no flying animals in this world. ”

This is what Yu Shan has always suspected, since the first day he came in, he felt that this place was very strange, the grass grew tall, and the animals and plants were also very tall, in this case, where did the birds go?

If there are birds, they must fly higher, and their size should not be small, and Yu Shan can definitely see it.

However, since Yu Shan entered the Eastern Wilderness Secret Realm, except for the group of beetles who still wanted to fly, Yu Shan did not see any other flying birds.

Also, the wind hasn't even blown a few times here, at most it's a gentle breeze, so at this point, this place really looks like a sealed environment, which is why it's called a secret place, not a naturally existing planet.

The reason why I think this is because there are a lot of irrational things here, it is not like the earth at all, so it should not be a normal planet.

In this case, there are prohibitions in the air here, and there are unknown dangers, so it is possible to kill the fierce beasts that can fly, and such an unreasonable speculation is also possible.

"Don't dwell on this, let's experiment with the hot air balloon we brought earlier in a while, and see how high it can fly, don't we know if it's dangerous in the air, or not?" Seeing the tangled appearance of the fifth knife and Yu Shui, Yu Shan said with a smile.

"I didn't expect that the domestic technology level is so high, and I can actually make such an advanced giant." At this time, Yu Shui looked at the huge airship and sighed.

Yu Shan was also a little amazed: "How big is this?" ”

"It is more than 90 meters long, which is equivalent to the size of a football field." The fifth knife said a little proudly.

"Load capacity?" Yu Shan is most interested in this.

"Loads up to 10 tons." At this time, Zhao Tongwu also came over, there was nothing for him over there, and the rest could only be completed by Tian Zhongzhong's debugging.

"Ten tons? That's 10,000 kilograms, that's enough. Yu Shan was happy when he heard it, 10,000 kilograms is 20,000 catties, which is definitely enough for them to use.

You must know that the sixteen of them, all of them add up to more than 1,000 kilograms, so calculated, they still have almost 9,000 kilograms of load to use, and with such a large load, how many fierce beasts can they carry?

"That's a good thing." in the waterways.

Yu Shan could only nod, this is indeed a good thing, because there is no flying beast here that can threaten it, and there is no strong wind to cause it to have an accident, it can be said that the environment here is really suitable for this big guy.

"This thing is different from ordinary aircraft, it does not need a runway, and it is not limited to landing on land, it can land on water, ice, desert and other planes, with a load capacity of up to 10 tons, can be modified to accommodate 48 passengers, and flies continuously for 5 days, with a speed of 92 kilometers per hour." At this time, Tian Zhongzhong walked over.

"Debugging done?" Fifth Knife immediately asked.

Tian Zhongzhong said: "There is nothing adjustable, just a set of close-range battlefield radar is loaded, and there is a close-range thermal imaging system, which is easy to debug, and now you can pedal the boat." ”

"Let's go up and have a look." Yu Shan immediately said.

"Has such a big airship been tested in China? It's not dangerous to fly, is it? After everyone entered the pod, Mi Xiaoyong said a little frightened.

"Just you kid is timid." Pang Tong patted Mi Xiaoyong's head with a smile and said.

"I'm not blindly worried, you must know that airships are a tool, but they are prone to accidents." Mi Xiaoyong was not convinced.

"By the way, this is not an experiment of the military, is it?" Yu Shan also asked.

The fifth knife said a little embarrassed at this time: "I said that it was from the military, but I didn't say that it was from the domestic military, rest assured, this type of airship has been tested by flight, and there is no problem at all." ”

"Not domestic?" Yu Shui asked strangely.

Tian Zhongzhong said at this time: "Actually, this is modified according to the Sky Lander, and some time ago I should have tested the Sky Lander 10 abroad, and it was very successful. ”

Tian Zhongzhong was not as secretive as the fifth knife, he directly said the origin of this airship.

The airship was originally designed for the U.S. military and was originally planned to be used to monitor the Afghan battlefield, but the U.S. military later canceled the project.

Later, the hybrid space vehicle company was still interested in producing and hoped to open a new chapter in the airship.

Originally designed at the request of the U.S. Army, the Sky Lander was designed in 2010 and was developed by the British Hybrid Aircraft Ltd. at a cost of about £30 million ($50 million).

The U.S. military originally wanted to use it for surveillance and detection, but due to lack of funds, the research and development was stopped for a while, and in 2013, a British airship company manufacturing plant acquired it, but then due to lack of funds, the development was stopped, and it has been moored in Belfordshire.

In February 2015, the British authorities allocated £3.4 million for funding, but changed its use to cargo because it is 1 to 2% cheaper than helicopters, and the company responsible for the design now plans to produce 10 units a year in the next five years.

In May 2015, the British company Hybrid Airship completed the Sky Lander 10 hybrid airship project with about £2.37 million raised by nearly 1,000 investors through a crowdfunding website.

It is the world's largest aircraft built by the United Kingdom, and its first test flight was successful.

Shaped like a giant airship, the super-aircraft is 92 meters long, the size of a football field, 18 meters longer than the largest airliners, the Airbus A380 and Boeing 747-8, and 25.5 meters high, equivalent to six double-decker buses, or the height of a nine-story apartment building.

And the airship in front of Yu Shan was copied from the data of the Sky Lander, so Yu Shan and the others looked at this huge airship dumbfounded.

"This airship is the world's largest aircraft, combining airship, helicopter and airplane technology, and can fly non-stop for two weeks." After introducing this airship, Tian Zhongzhong finally said.

"The largest airship in the world? It's really big enough. Mi Xiaoyong exclaimed.

"Yes! This thing was originally designed because of its lower energy consumption than ordinary aircraft, and greater carrying capacity, if it were not here, this airship could fly at an altitude of up to 4,900 meters, reach a maximum speed of 148 kilometers per hour, and can fly non-stop for two weeks. Tian Zhongzhong said.

"In fact, ten tons is really not very large, if the sky here is really safe and there is no strong wind, we can also get a real world's largest airship and use it as an air base." At this time, the fifth knife suddenly said.

"The real world first?" Yu Shan looked at the Fifth Dao.

The fifth knife said: "Yes, the real world first, the first in history is much bigger than this airship, but he is short-lived." ”

"You're talking about the Hindenburg, right?" As the airship slowly took off, Tian Zhongzhong said.

The fifth knife said: "Yes, I am talking about the Hindenburg, it is 248.6 meters long, the maximum diameter reaches 41.4 meters, such a large airship, the fuel and engine are only 100 tons, but it can carry 363 tons of passengers and cargo." (To be continued.) )