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Chapter 1545 Comparable to heavy duty

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    "Monkey in the Sky? Wow~~~This name is down-to-earth and yet domineering at the same time!"

    "Hehe, Sky Monkey~~~~It has so many meanings!"

    "2c? Why not 2b?"

    "This is not simple. If you think about it with your heels, you will know that ZTM-NB has come a long way in the launch vehicle. At least the Diamond Monkey-1 series is an example. After all, Tao gives birth to one, then gives birth to two, and then 2b and 2c.  "

    "Damn it, ztm-nb company is awesome!"

    "This is not nonsense, look at the name of the company, if it is awesome, then it is really awesome"

    After Zhuang Jianye exposed the Tianhou-2c liquid oxygen-kerosene launch vehicle, the audience on the interactive platform suddenly went crazy. Unexpectedly, ztm-nb company was actually developing a launch vehicle. Not to mention, actually  There are already mature models.

    This can make the audience in front of the TV extremely excited. You must know that usually they can watch the launch of the carrier rocket on TV. To be honest, people who are not professionals have no idea what is going on in the factory.

    Because of this, when Zhuang Jianye said that he would take them to see the Sky Monkey-2c, even if it was out of curiosity, the audience in front of the TV was full of expectations.

    Zhuang Jianye didn¡¯t let the audience in front of the TV wait too long. As the camera panned through two workshops, he came to the entrance of a huge factory.

    After doing some simple dust-proof treatment, Zhuang Jianye led the live broadcast team into the factory, and then an uncontrollable exclamation broke out on the interactive platform.

    ¡°Oh my god, this factory is so big!¡±

    ¡°Rocket~~~I saw the rocket~~~¡±

    "Then it should be Sky-Diamond Monkey Yes, I saw that there is no zth-2c on the rocket. Isn't it the pinyin abbreviation of Sky-Diamond Monkey?"

    "It's really a monkey in the sky. Hey~~~it looks very similar to the launch vehicle I saw on TV. There seems to be no difference"

    ¡­¡­

    When the live broadcast camera showed a close-up of the Tianhou-2c carrier rocket parked in the factory, Zhuang Jianye took the opportunity to drink water to moisten his throat, and then briefly communicated with Ju Tao to see if this routine would work.

    Ju Tao didn't say anything and gave Zhuang Jianye a thumbs up: "Brother Ye, I'm really convinced today. You don't know the ratings. It has directly broken the record of our international channel. At present, except for the Spring Festival Gala and News Network  , focus interviews and weather forecasts, Brother Ye, you have the most live broadcasts."

    Zhuang Jianye took a sip of water, then handed the thermos cup filled with wolfberry, wild chrysanthemum and honeysuckle to his assistant, and nodded: "In that case, let's follow this routine."

    "Well~~ continue to carry forward your advantages of interacting with the audience and present the characteristics of the Sky Monkey-2c launch vehicle!" Ju Tao clenched his fists at Zhuang Jianye to show encouragement, and Zhuang Jianye also gave Ju Tao a thumbs up.  He said it was no problem, and immediately took off the gray T-shirt that was slightly soaked with sweat. He took an identical one from his assistant and put it on. Then he walked to the camera, as if he had just been surrounded by Sky Monkey Rockets.  It was really as if he, Zhuang Jianye, had led him all the way.

    "Let's see what messages the family members have left. After all, I just walked all the way and didn't pay attention!"

    Zhuang Jianye¡¯s tone was breathy, and he immediately looked at the interactive screen, frowned slightly and read: ¡°Why does the Sky Monkey look like other launch vehicles?

    Haha~~This question is interesting. The principle of rockets is actually very simple, which is to use the recoil principle to send a spacecraft into space at the first cosmic speed.

    From this perspective, the efficiency of the cylinder is the highest, because this structure can not only reduce air resistance, but also carry more fuel.

    Our Zhuantianhou-2c launch vehicle is a typical liquid oxygen-kerosene liquid rocket with a total length of 45.6 meters. The diameter of the first two stages is 3.35 meters, and the diameter of the third stage is 2.25 meters.

    The first stage uses four dpz-2d liquid oxygen-kerosene rocket engines in parallel, and the second stage uses one dpz-2d liquid oxygen-kerosene rocket engine and four adjustable dpz-1b with a single thrust of 4 tons.  The third stage of the swimming rocket engine uses a dpz-1c liquid oxygen-kerosene engine with a thrust of 5 tons.

    The total launch mass of the entire Tiantianhou-2c launch vehicle is 228 tons, the carrying capacity of low-Earth orbit is 12.6 tons, the carrying capacity of geosynchronous orbit is 4.6 tons, and the carrying capacity of sun-synchronous orbit is 1.2 tons.

    In terms of carrying capacity, the early models of the cz-3 series, which have exceeded the aerospace system, are basically at the same level as their improved cz-4. However, compared with the cz-4 model, our launch mass is smaller and the payload is  Bigger¡­¡±

    "Wang Zhuang, I am an employee of an aerospace factory. Judging from the launch quality, your Diamond Sky Monkey is a cz-3 type rocket."? How can it achieve the excellent carrying capacity of 12.6 tons in low-Earth orbit and 4.6 tons in geosynchronous orbit, even if it has not reached the level of cz-3A and cz-3B?

    You must know that this level is comparable to that of heavy-duty launch vehicles, and is even capable of performing space station and lunar exploration. It is difficult for me to believe that a liquid rocket with a take-off weight of far less than 300 tons can achieve this level.  "

    ¡°This is a great question!¡±

    Seeing a professional suddenly appear on the interactive platform, Zhuang Jianye seemed particularly happy: "First of all, I would like to thank this audience member called 'I am an astronaut' for his enthusiastic support. The questions were very professional and in-depth. To be honest, I almost missed it."  I, who know a lot about aerospace, asked about it.

    ???????????????????????????????????????????????????????

    Usually, the casings of cz-2, cz-3, and cz-4 in the aerospace field are made of ordinary aviation aluminum alloy. Because of the propellant, most of the interior is made of special corrosion-resistant alloy steel. Of course,  Titanium alloys are also used, but the cost is too high, and it is not cost-effective to use them for general civilian space launches.

    But the weight of alloy steel is very large, which results in the weight of cz-2, cz-3 and other models accounting for a large part, which accordingly reduces their own payload.

    Take the cz-3 as an example. Its low-Earth orbit carrying capacity is 3.9 tons, and the geosynchronous orbit is only 1.45 tons. Therefore, the subsequent improved cz-3 can only use additional boosters and adopt a bundled structure.  This method increases thrust and payload at the same time.

    As our Diamond Monkey-2c uses the most common kerosene and does not need to use special corrosion-resistant alloy steel, it can be loaded with lighter materials. In this regard, we chose China Tengfei Aviation Materials Co., Ltd.  The t-nb525 aluminum-lithium alloy is not only used in kerosene fuel tanks, but also the shell of the rocket. Due to the extensive use of this kind of lightweight material, our Diamond Monkey-2c is compared with other products of the same level.  The weight of the cz-3 is reduced by more than 55% on the rocket body.

    In addition, everyone should not forget that the weight of a single unit of our dpz-2d liquid oxygen-kerosene rocket engine is less than 600 kilograms, while the liquid rocket engine used by cz-3 can be as high as 2.8 tons. Four units.  How much more weight have you lost?  What's more, we use a lot of carbon fiber composite materials in the fairing and internal support structures"

    Zhuang Jianye didn¡¯t start, but when he started, the audience in front of the TV was stunned

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