Military Technology

Of course, the light pressure generated by sunlight is used here. It's just that the light pressure generated by the sunlight exerts a small thrust on the spacecraft and the existence of air resistance prevents the spacecraft from taking off from the ground.

　　 But in space where there is no air resistance, this small thrust can still provide an acceleration of about 10e-5 to 10e-3g for a solar sail with sufficient sail area.

　　 The solar sail designed by the researchers for their deep space probe is very huge, fully unfolding to nearly 800 square meters, which is considered a giant in space. What kind of concept is this? After unfolding, it will be about the size of two basketball courts.

　　 Such a large solar sail requires a very light weight, otherwise, the gain will not be worth the loss.

　　 And this nearly 800 square meter solar sail is very light and thin. It is basically cut out of a special polymer composite film. This storm composite film is very light and thin, it only measures less than 0.5 mm. Such a thin film needs to be made so large and quite strong, which places more stringent requirements on the manufacturing process.

　　 If this is only the case, it is not enough to make the experts exclaim, tusk. This huge solar sail is not simple. Wu Hao and their scientific research and technical personnel are very talented and prepared to spray a photosynthetic power generation paint on it, which can carry out photoelectric conversion. Although the efficiency is relatively weaker than the flexible solar panels currently used on spacecraft, the advantage is that the area of ​​the solar sail is huge, so the electricity generated is also very objective.

　　 Hearing Wu Hao's introduction, some experts could not help but raise their own doubts: "If this is the case, why use solar sails? Why not use this kind of flexible solar panels directly."

Here Wu Hao hasn’t spoken yet. Some experts answered for him: “The farther the distance from the sun is, the weaker the light that can be received. If it reaches the outer ring of the solar system or the edge, then The received solar energy can be said to be very low, and solar panels are useless."

　　 In response to the expert's answer, the expert who asked the question immediately asked: "Since the solar panel is useless, will the solar sail that also rely on sunlight drive it?"

　　 Hearing the expert's rhetorical question, the expert who answered was taken aback, and couldn't answer for a while. At the same time, experts and leaders in the hall also started talking.

　　 Indeed, after being reminded like this, everyone found out that this solar sail is just as useful as a solar panel.

　　While discussing, everyone looked at Wu Hao, wanting to wait for his answer.

　　 And Wu Hao always smiled in the face of such a problem. After seeing everyone at the scene calm down a bit, Wu Hao gently spit out two words: "Speed!"

In the sudden voice of everyone, Wu Hao went on to explain: "The solar sail can generate extra speed for the probe. This acceleration is continuous or even permanent. In terms of it, it is no better than the probe. The Hall engine assembled above is poor.

　　Secondly, we also fully considered the complexity and harshness of the cosmic environment, so we designed a backup power system for this probe. In this way, even if there is a problem with its main power system, the probe can still rely on the backup power system, that is, the solar sail to continue to fly forward. "

　　 Hearing Wu Hao's explanation, everyone nodded and recognized his answer.

Wu Hao smiled and continued to introduce: "In addition, the front section of this deep space probe is also equipped with these four new solid-state batteries developed by us. The purpose of these four new solid-state batteries is to store isotopes. The thermoelectric battery and the electricity generated on the solar sail are stored and used for the operation of the entire deep space probe. This is the basic situation of the entire deep space probe's energy system and auxiliary propulsion system.

　　 In the front section of the entire deep space probe, a variety of scientific research detection equipment is installed, including probes of various bands, imaging equipment, communication systems, intelligent control systems, and so on.

　　 By the way, when it comes to the communication system, this time we also carried out an innovative design. Everyone knows that the deep space detection range is very far away, so communication difficulties between the probe and the earth have always been one of the headaches for scientists.

　　 So this time, we have carried out an innovative design in this area to enhance the communication performance of the entire deep space probe. "

Seeing the curious gazes of everyone, Wu Hao smiled and pointed to the model of the deep space probe and said: "Do you still remember the huge solar sail we just mentioned? We think its such a large area can be fully utilized. Get up."

　　 Use this solar sail?

　　 Everyone was stunned. The first thing that reacted was not the experts present, but Qin Xinghe. His eyes lit up, and then he said: "What you mean is to use this solar sail as an antenna to communicate with the earth."

　　 Wu Hao smiled and replied, "Why not? This solar sail is nearly 800 square meters in size. Such a large size can be used as an amplifier to strengthen the transmission and reception of signals.

　　 Now everyone is looking at our deep space probe~www.readwn.com~ Its overall shape is not like a huge disk with a long stick running through the middle, do you want the antenna pot used for communication outside? "

　　Don't say it, it looks like this at a glance! Under Wu Hao's reminder, the experts once again looked at the deep space probe suspended in mid-air, and nodded involuntarily.

　　 This is really a genius idea, a genius design!

　　 exclaimed, and then someone asked questions: "It's just that such a design can be realized?"

　　 Hearing this question, Wu Hao smiled: "Since we can propose such a design, naturally there is a whole set of related solutions. Don't worry about this."

　　 Seeing Wu Hao's concise and confident answer, everyone was a little surprised at first, and then a lot of questions arose. But seeing Wu Hao's answer in just a few words, everyone knew that there was definitely nothing to ask now, so let's wait and see it slowly, don't worry.

Wu Hao glanced at the crowd, and then went on to introduce: "On the long truss support rod, there is actually another article. There are also a lot of instruments and equipment installed on it, and some are used for related detection research." See Wu Everyone was a little surprised at Hao's concise and confident answer, and then a lot of questions arose. But seeing Wu Hao's answer in just a few words, everyone knew that there was definitely nothing to ask now, so let's wait and see it slowly, don't worry.

　　 Wu Hao glanced at the people, and then went on to introduce: "On the long truss support rod, there is actually another article. There are also a lot of instruments and equipment installed on it, which are also used for related detection research."