Movie black technology
Chapter 320 Pneumatic shape considerations
But with the speed of the Tibetan Antelope, even if you want to send a delivery to the space station is a little less qualified.
Because the space station is flying at about 7.8 kilometers per second, about 28,000 kilometers per hour in near-Earth orbit above.
In contrast, the Tibetan Antelope, even the nuclear-powered version of the original Black Antelope, could not reach this terrifying speed in the atmosphere.
This is determined by the difference between rocket and plasma propulsion.
A rocket launch means a short period of extremely abundant power, so the object must be accelerated to orbital speed within that time and maintained at that speed afterwards, otherwise the load launched into space will eventually fall back to earth slowly because of gravity.
Plasma propulsion, on the other hand, is continuous power and does not need to reach orbital velocity to enter space at all.
If you want to compare the two, rocket power is a car that can only be filled once, and plasma propulsion is a bicycle.
A car is fast, but after running out of gasoline it can only stay in place, while plasma power is slow, but as long as you bring enough supplies, it is possible to travel around the world.
So if the Tibetan Antelope and the space station want to dock in space, then the Tibetan Antelope will need to accelerate to at least orbital speed to make it possible.
But even in near-Earth space atmosphere is thin, the acceleration of energy consumption than in the atmosphere to low, want to accelerate more than twenty times is not an easy task, wait until the Tibetan Antelope acceleration finished, it is estimated that the energy is almost used up ......
From this direction, the plasma version of the Tibetan Antelope and the current space exploration system is extremely mismatched, built out even if you can go into space, in the current system can play a small role.
It can not perform satellite maintenance tasks, can not directly to the space station to deliver supplies, even to launch the satellite also need to equip the satellite with additional thrust engines, in order to allow the detached satellite to reach the encircling speed.
"So I think it would be better if we change the aerodynamic shape."
Tang Huacong's words are not casual, these days inside the base he also decided to put forward this opinion only after deep consideration.
In his opinion, the aerodynamic shape of the Tibetan Antelope was very unreasonable and seriously slowed down its speed.
The only advantage is probably that the pilot will be very comfortable inside, which provides a square space like a small house is very rare in spacecraft and space stations.
Such a large integrated space than the usual cramped *** cramped, separated by cabin segments, like staying in a large cylinder inside the ship and space station is simply too comfortable.
But this advantage is not necessary.
Now the space voyage is the same as in the old days of the great sea, the astronaut's comfort experience is not in the first place, as long as there is a place to sleep inside the cabin plus a little privacy space, still get by on it.
After all, every bit of space and load on space is calculated in tens of thousands of knives.
"If we change to streamline, not only the speed of the plane can be increased in the atmosphere, thrust and energy can also be used more, its thrust ratio will be higher and payload can become more, so that the energy consumed will be reduced ......"
Tang Huacong spoke positively about the benefits of changing the aerodynamic shape, and also listed many calculations on the paper, indicating that his proposal was supported by data.
These calculations are the result of his thinking in the past few days.
For this proposal, Chen Shen also thought for a while, but finally shook his head and decided not to change.
It is true that it is just like what Tang Huacong said.
Changing the aerodynamic shape can effectively increase the thrust utilization of the Tibetan Antelope, and the horizontal takeoff can allow the aircraft's thrust to lift off smoothly with less than the load, after which it can then slowly enter space by relying on the buoyancy of the atmosphere.
Such a program compared to the Tibetan Antelope can save a lot of energy in the atmospheric flight phase, can carry the load will also increase, even in near-Earth space to perform accelerated docking, the efficiency of acceleration are much more efficient than the current shape.
But Tang Huacong did not know the possibility of the existence of miniature nuclear reactors, so he did not take into account that in the future the energy of the Tibetan Antelope is the least valuable thing, and also too obsessed with the eyes inside the atmosphere.
The nuclear-powered Tibetan Antelope's nearly seven million kilometers of range is within the atmosphere.
If it leaves the atmosphere, with the disappearance of atmospheric drag, its acceleration efficiency will increase dramatically, while consuming less energy, and its range will increase extremely dramatically.
In space, engines that provide ninety tons of thrust every second can accelerate the Black Antelope to a terrifying speed in a short period of time.
In the long run, general airplanes may still be able to compare the Tibetan Antelope when they first come out of space, but given a period of acceleration, those airplanes that rely on inertial speed and rocket engines to fly in space cannot even touch the tail of the Tibetan Antelope.
So now this plasma version of the Tibetan Antelope is not as good as the airplane, but it is actually exploring the way for the nuclear-powered version of the Tibetan Antelope in the future.
So that in the future, as long as the micro nuclear reactor is completed, they already have enough data to immediately let the Tibetan Antelope birds and guns, from the subsistence line straight to well-off!
But the words are so, but what Tang Huacong said is not without reason, so Chen Shen still has to think of a suitable reason to do so, just like he responded to Ding Zhiyi before.
"In this case ......"
Chen Shen thought for a while, "the current aerodynamic shape is set in consideration of the future development of the model, and if you change the streamline shape, you may have to go to blow the hypersonic wind tunnel, the delay is too much, so I think it is not convenient to make further changes."
Streamline shape compared with the current shape of the Tibetan Antelope, in the wind tunnel above the requirements of the difference is not a little bit.
Now the shape of the consideration is as long as you can fly, encounter high winds or something will not fall down on the line.
The streamline shape should consider the airflow disturbance outside the fuselage, flight resistance ......
Considering the high-speed performance it may have, it may have to blow a legendary speed of up to Mach 25 super wind tunnel.
That thing may not have been built yet, and when it is built, maybe five years have passed, his miniature nuclear reactor may have come out.
By then also blow a hammer wind tunnel, more to the fuselage above a few sets of propulsion units, direct force big brick fly also more fragrant!
Did not wait for Tang Huacong to speak, Chen Shen said: "But Tang team leader also has a point, this can be used as a research direction, after we achieve the prototype of the Tibetan Antelope, to carry out research in this area."
This direction is still very promising, the plasma reactor is indeed more suitable to be used on top of this kind of air and space aircraft.