I make a popular science video and all the emperors learn from it!

It is also buoyant by air.

The ancients could also see that airships had a better prospect than hot air balloons.

Qin Dynasty.

The people of the Mo family present were collectively circled.

"Hydrogen, helium..."

"Could it be that there are several types of air?"

"But this thing can't be seen or touched, how can it be distinguished?"

Everyone is mired in self-doubt.

They don't understand how later generations separated the air.

On the other hand, it takes some time to digest the concept of "air".

Not to mention separating the air out of several types.

"You don't have to be discouraged, you have to walk step by step, otherwise you should be careful of falling and falling. Ying Zheng was indifferent in his heart.

In the light curtain, the research of the airship by later generations has taken nearly a hundred years.

Only then did it get a lot of improvement.

In the more backward Qin Dynasty, it is impossible to get it out in a few years.

Hearing the comfort, the Mo family felt a little better.

Everyone bent down and saluted: "Your Majesty's lesson is that 687 is my anxious. "

Anyway, they continued to develop hot air balloons.

Han dynasty.

Liu Che secretly clenched his fists.

This is the weapon of war!

The hot air balloon can't control the direction, or it's a little weaker.

Compared with hot air balloons, airships are not only faster and more agile, but also have a greatly increased carrying capacity!

Liu Che saw the way to fight the war in the future.

Definitely occupy advantageous terrain in the air!

Hit the low in the high place, the advantage is too great!

But it's not without its problems.

The most fatal problem today is that the airship cannot be developed.

You can only get the hot air balloon out first, and then slowly improve it by shining a light curtain.

Liu Che calmed down and waved his hand: "Everyone, don't worry about the rest, first write down all the words on the (bach) light curtain." "

It doesn't matter if he can't get an airship during his reign.

And his sons, grandsons, great-grandchildren...

As long as you keep improving, you will definitely be able to build an airship one day!

Three Kingdoms period.

Liu Bei couldn't be excited.

"Okay, God help me, the hot air balloon can be improved!"

"This airship is excellent. "

"Not only can you transport food, but you can also send out to reconnoiter the enemy's situation and attack the enemy camp at night..."

"It is difficult to transport grain in Shudi, if there is this thing to help, Shu is not a cage, but an extremely strong fortress!"

He immediately looked at Zhuge Liang with a burning gaze.

Only Zhuge Liang is possible to make an airship.

Feel the gaze of the people around you.

Zhuge Liang was numb.

No, you think too highly of me. (If you read a violent novel, go to Feilu Novel Network!)

To be honest, it's hard to say whether a hot air balloon can be realized or not.

You still want an airship??

Why don't you take a shower early and go to bed under the covers.

Everything in my dreams.

Ming dynasty.

If it weren't for the ministers, Zhu Di would have looked up to the sky and laughed.

Hot air balloons are not the end.

It can also be modified to become an airship!

Zhu Di's strategic vision saw the huge value of the airship in an instant.

"Come on, write it all down, write it all down, miss a word, I will hold you accountable!"

The ministers could only memorize and compare the light curtain.

I'm afraid of making a mistake in writing a word.

[Popular science continues.] 】[]

[Before and after the First World War, it was a period of rapid development of airships. 】

[After that, because of its shortcomings, it was quickly eliminated by various countries. 】

[The disadvantages of the airship are as follows:]

[Although military airships have great potential for development, we still cannot avoid their inherent shortcomings. 】

[In the last century, airships were replaced by airplanes for two main reasons: high construction cost and low speed. 】

[Although the cost of using the airship is very low, its cost is astronomical. 】

[The price of an airship generally varies according to its dimensions, for example, the price of a small 40-meter-long soft airship is about 2 million yuan. 】

[If the airship is used as a large military transport, it is destined that the initial construction number will not be very large, and the cost of carrying goods at the beginning will also increase sharply. 】

[If the cost is discarded, modern engineering materials and avionics will make modern airships much more advanced than their ancestors half a century ago, but their speed is still a headache.] 】

[You know, modern jet aircraft are at least 6 times faster than airships.] 】

[Of course, the slow speed of a military airship is only relative to an airplane, while the speed of an airship is quite fast for a surface ship.] 】

[But then again, the speed of the airship is both a disadvantage and an advantage.] 】

[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 board to detect the target accurately and efficiently.] In addition, at low speeds, the on-board radar can more easily detect small targets. 】

[In order to make up for some of the shortcomings of the airship.] 】

[Airplanes came into being!]

【...】。