Chapter 445

The people in the conference hall were all dumbfounded. The speed of 50 kilometers per second has exceeded the limit speed of human aircraft.

The high-speed flying aircraft is speeding in the space, and the solar panels are also playing a full role. All the data that had been questioned before are now true.

Graphene, nuclear power, ion engine. And let the shuttle go at such a high speed.

We all look at the big screen and the data sent back by Hongming. Its speed has reached the escape speed, and it has been accelerating at this stage. This stage is equivalent to the ascending stage of human missile launch. Although it has been accelerating, it has been maintaining a very stable level flight speed, After all, the power of the battery always faces the sun, the power supply is still sufficient, and the nuclear power is maintained. Of course, the speed is very stable and guaranteed.

Because it successfully entered the orbit of acceleration, and at this stage, the aircraft did not go around the ecliptic again, but began to go around the sun vertically. However, the speed was maintained at about 50 km. Although it was necessary to keep the engine working all the time, this kind of work was not the breakthrough work before, It's the speed of the flight around the orbit, and this speed can continue to increase.

"We have successfully entered the orbit of revolution. The next step is to continuously adjust the flight so that the revolution speed can be continuously accelerated. Then when we go around the sun, when the orbit is far enough, we can change the maneuver again and fly in the opposite direction towards the apogee. Using the height perpendicular to the ecliptic, we can turn around the sun and fly in the orbit of revolution towards the apogee. This is equivalent to flying one circle from the earth's orbit perpendicular to the ecliptic plane, so that it can be seen as flying out of a type orbit. When the aircraft flies around the sun and flies out of a type C orbit perpendicular to the ecliptic plane, it suddenly "somersaults" and uses the orbital speed to directly change from the orbit to the far sun orbit, that is, the orbit that can intersect with the orbit of Saturn. In this case, this flight mode is equivalent to the attitude of a ballistic missile.

And this kind of flight actually reduces the flight time. After all, there is no need to break free one by one. Once captured by the planet's gravity, if you want to break free, you will consume energy again. But this method does not have too big consumption, because it still detours the orbit, does not always force to break away from gravity. This scheme of using vertical revolution orbit is a forward trajectory.

After the spaceship is far away from the earth, the earth's gravity will no longer interfere with the spaceship. During this period, we only need to maintain the speed, not accelerate.

Mona stood up. She looked at the monitor and shook her head slightly. She said, "I can't believe it's really successful. The biggest limit of human beings is to break through this speed limit. Once it can be reached, we can use this gravitational orbit to fly. How did you think of such a plan? I think you must have thought about it before. You just want our approval. Because you can't be trusted by yourself. "

Xiang Qianjin said with a smile: "in fact, I found it by accident. First of all, it's inertia. First of all, we have to get rid of the inertia of the earth, that is, beyond the earth's revolution speed. Moreover, we don't really launch vertically. In fact, we fly along the earth's revolution orbit with inertia. It's just inertial upward, not completely vertical, Instead, it rotates around the sun at the angle of inertia. This orbit is the orbit of the earth. At this time, we can change the direction and fly directly to Saturn after finding the intersection point with the orbit of Saturn. And this flight is still a stage of escape speed flight. And it's going to be faster when you're flying towards Saturn! This kind of trajectory is similar to the jump rope thrown out, and the fixed ends are thrown out upward. The direction of this line using inertia is the real orbit. In the final analysis, we are still using the inertial orbit, and we must maintain an escape speed. In this way, you can enter the orbit of Saturn. Once you enter the gravitational influence area of Saturn, you start to slow down, cut into the orbit of Saturn, and start to maneuver to capture the havoc star! "

Mona nodded and said, "so your goal is to reach Saturn in 90 days. How fast is the orbit in the far sun?"

"Throw out the critical value of the solar system!" Xiang Qianjin said seriously.

"But we have already exceeded the critical value of the universe, and we can surpass it at 16.7." When Mona said that, Xiang Qianjin said with a smile: "ha ha, then I ask you, do you jump out of a fast train with your own speed? In order not to fall, do we have to exceed this speed? The minimum speed of the solar system to escape from the earth is 46.5 kilometers per second, but there is another speed. You should remember that the sun also has the speed of the sun when we are still in the spiral arm of the galaxy. We have to escape from the centrifugal speed of the sun. Even if we reach the speed, we are still affected by gravity and will be caught by gravity. It is always there. But if we get rid of this gravity completely, there is a speed. If we exceed this speed, the spacecraft will be directly out of the control of the galaxy. It's going to be thrown out of the solar system. Because the speed is too fast. In that case, if the speed of the sun's own rotation is opposite to our flight direction, then we will be farther and farther away. Finally, let alone go to Saturn, the Oort Nebula can't stop us. "Mona suddenly understood, she whispered: "do not escape the centrifugal speed of the sun itself? That's 250 kilometers per second? "

Xiang Qianjin picked up a pen and wrote a bunch of formulas on the paper, then drew a sketch and said, "that's just an estimate, but we'd better not exceed 250 km / s. of course, the speed I predicted is 220 km / s, that is, the flight speed in the far future. I'm going to throw us out by the sun, After reaching the speed above 240 km / s, our spacecraft will turn and gradually decelerate, maintaining an average speed of 220 km / s. After entering the orbit of Saturn, it will continue to decelerate until we cut into the orbit of Saturn. The whole process can be said to be very breathtaking. In order to have enough speed to throw out, we must have this speed to fly out. This speed is really out of the control of gravity. "

Mona stares and asks, "220 kilometers per second?"

"Yes, that's the only speed we can get to Saturn. If it's from the ecliptic, there's no way to fly at this speed. After all, the interference of gravitation is very complicated. But our current plan is different. The speed of the catastrophe is very fast. It cut in from Lyra, and now we know the speed, this guy is coming straight at us at more than 400 kilometers per second. And the speed is increasing. The source of this guy is a galaxy that we know very well. This galaxy has always been very famous in China, because we pay attention to her every Chinese Tanabata Festival. "

"You're talking about Lyra α？ "Vega of China?" Mona hears a hint of progress. She seems to have found something wrong. Mona took a piece of paper and said, "this speed is obviously abnormal. Generally speaking, the sun is on the Orion Arm of the branch cantilever, and the revolution speed is between 240 and 250 km / s, and 400 km / S is obviously abnormal. First, Lyra α We're only 25 light-years away, and she's wrapped up in an asteroid belt left behind by the impact of a large group of planets. Similar to our Kuiper belt. Havoc hit us at 400 kilometers per second? "

Xiang Qianjin shook his head. He said in a low voice: "as far as I know, Vega is a leading star. Her autobiography is so fast that she can rotate once in 12 hours. Because of too fast autobiographical speed, Vega's body shape is oval, because Vega's brightness is 40 times that of the sun, but because of high-speed rotation, it can solve this problem. Vega is wrapped by a large number of dust disks, so the temperature in space is higher than that in the solar system. Vega is only 25 light-years away from us. From the environmental point of view, Vega's disk system is most similar to the solar system, and there is no earth in its disk system. So I suspect that this is not a simple accident, but a man-made disaster. "

"Extradepartmental life? You mean, this is an attack from 25 light years away? "

"First of all, biological life can be continued, and human civilization can make its own thinking dimension continue to expand, from the original decades to the last 100 years, and then gradually improve. So it's hard to guarantee that this planet isn't coming very fast. Maybe they use our technology, but their technology is better than ours. They use the projectile trajectory to let this thing fly into the solar system and aim at us precisely. Guess what? "

Mona thought about it. She said in a deep voice, "destroy mankind? Did they find humans? "

"No, it should not have been found. I'm just a personal estimate. This should be a test. This guy should have been sent to us after 30 years or even more. This should only be an experiment in the near future orbit. I'm afraid this asteroid was only launched at sub light speed. It should be similar to our detector. "

"Detector?"

"Yes, it's like our Voyager and our vision. Their purpose is to explore, we are to explore the periphery of the solar system, let the spacecraft fly out of the solar system. And they found us. A dark star surrounded by a large number of stars, this dark star is the sun. The characteristic of civilized galaxies is that they should not be in very bright galaxies, because stars like that are more aggressive. On the contrary, galaxies like ours, which look dim and are easily regarded as variable stars, are more likely to give birth to life. That's why we can't find each other. First, it's too difficult. Second, the distance between us is too far. Unfortunately, we are too close to them. So they're going to probe us. "

"So our attack will attract their attention?"

"Yes, it will be, but because of our attacks inside the galaxy, they will quickly confirm the technological gap between us. For example, their technology can be intercepted directly outside the galaxy without entering into the galaxy. So our move will attract their attention. But even if they come, there should be no large-scale army coming. Because so far they've only used this kind of detector to detect us. What does that mean? ""It's like we can take the probe that far, but we can't really get to the edge of the galaxy."

"That's what they mean. There's a lot of uncertainty about their subluminal orbit, and I doubt that their launch will be successful. If it's a success, it should go straight into the chart. Instead of coming in from the outside. Of course, it has something to do with the Oort nebula, but his speed of intrusion is too fast. It's a seizure, and he should have been caught by the gravity of a planet. "

"Some planet? The planet outside of us? "

"No, I think it's a planet in the system."

Mona asked in surprise, "but he's only here now, isn't he? wait! Kuiper! You said there were planets outside the Kuiper belt?! You mean... The hypothesis of the tenth planet? "（ Pluto wasn't removed at that time.)

"Yes, but I suspect... This planet is not a planet, but a brown dwarf. It's a brown dwarf orbiting the sun in the Oort cluste