Long seventh refresh space record: near-Earth orbits carrying capacity maximum
Near-Earth orbits carrying capacity maximum
Long seventh as the current near-Earth orbits carrying capacity maximum of rockets, its near-Earth orbits carrying capacity of 13.5 tons, is 1.5 times of the past. So long seventh carrier rocket will greatly enhance the overall strength of China's space, accelerating the pace of create aerospace power.
Launch the shortest
March seventh, rocket is China currently launches accounted for bit shortest of rocket, to adapted Hainan more Typhoon of features, also to future of high-density launches prepared, March seventh, need has in launches district fast launches of capacity, and past vertical transit only transport rocket different, March seventh, used has more big, and faster of new activities launches platform, rocket and equipment is while vertical transit, arrived launches station Hou no longer need test, simple prepared Hou on can launches.
In the marine environment for the first time fired rockets
Long seventh rocket launch is the first in the marine environment, Hainan spaceport and the Inland launch sites biggest difference is hot and humid and rainy, Typhoon-prone sea climate, while many precision instruments on rockets are hyper-sensitive to the environment. So the long seventh has a special research project is in the research and development of technologies for adaptation to the natural environment in Hainan, researchers conducted a test and finally passed strict examination to verify, so now the long seventh in Hainan have complex meteorological, climatic environment day launch capabilities.
Press Add new points: how strong is the long seventh?
Jiaodong online of 25th, and seventh rocket long 53.1 m, core-level 3.35 meters in diameter, bundle 4 2.25 m diameter boosters, booster twice times the length of active launch vehicles, a takeoff weight of 597 tons.
13.5 tons of its capacity for near-Earth orbit, Sun-synchronous orbit of 5.5 tons and medium-launch vehicles, China will increase the carrying capacity of near-Earth orbit from 8.6 tonnes to 13.5 tons to reach international advanced level of similar rockets.
Rocket carrying capacity-how much, how big is the stage of China's space. According to rocket technology Institute introduced, China currently development scale and technology span maximum of rocket--March fifth, will Yu this year second half of flew, has near to track 25 tons, Earth synchronization transfer track 14 tons of carries capacity, and international Shang mainstream rocket of carries capacity quite, will bear launches Chang fifth,, and station core class and Mars detection, has milestone meaning of major task, will sharply improve China into space of capacity.
In addition, within 15 years, China is expected to launch a heavy launch vehicle. In currently of design blueprint in the, heavy rocket arrows body diameter near 10 meters, full arrows total long near hundred meters, carries capacity is existing rocket carries capacity of 5 times times more, over is development of United States next generation rocket of carries capacity, can meet future manned Moon detection, and Mars sampling returns, Sun Department planet detection, variety deep empty detection task needs, guarantees China in future universe exploration and more big more far space of discourse right.
Designing change: more environmentally friendly propellant
Different from that of existing rockets use toxic propellants, and seventh, with independent intellectual property rights, China's liquid-oxygen/kerosene engine, realization of nontoxic, pollution-free.
Due to the temperature of the liquid oxygen to lingxia183sheshidu, in the development of rocket experiment, after each cryogenic fueling, test cell towers on the ground like a "cold storage".
Although appears to be "steel" big man, weighing hundreds of tons, but rocket 90% or more of body weight is fuel. Due to the weight of fuel can not arbitrarily increase or decrease, in order to bring more "passenger" in space, reduce the weight of the rocket is the key. Therefore, the "up to seven" rocket shells are very thin, the thinnest is only 0.8 mm, and egg shells, can be said to be thin as cicada's wings are amazing.
Meanwhile, long seventh three-dimensional drawing-free design and manufacturing technology, represents the highest level of field digital China launch vehicles developed close to NASA and Boeing, Airbus, marking China's new generation of carrier rocket has reached the international advanced level in digital design skills.
Long seventh overall design team is also very "steal": 80% are more than 35 years of age, 46% has a doctorate.
The wind and rain "resistance" launched
Active rocket launch to avoid a thunderstorm, but Hainan Wenchang launch site the damp climate, rainfall, so long seventh with waterproof design, just like the rockets put on the golden helmets iron cloth shirt, even rain can launch.
In addition, Hainan Wenchang launch site had "shallow wind", to the long seventh rocket vertical transition challenges. Design to fit on the the long seventh "wind load shedding device", even with force 8 winds is not afraid.
Rocket launching platforms also covered a large area of "sunscreen"-the kind of special protective coating. This is due to rocket launch moment of ignition, temperature up to 2,800 degrees Celsius, enough to melt most metals and non-metallic materials. Heat-resistant coating on the surface, the launch platform can extend the life of better under high heat flux "erosion".
Next-generation launch vehicle also has strong high temperature "double insurance". At the time of the rocket blasted off, launch platform next to the "high-flow water cooling and noise reduction system" to the launch pad water cooling, 400 tons of water spray in 20 seconds.
Injection of 400 tons of water, 30% water will vaporize into the atmosphere, 60% water flow away through the Groove and vaporize the water and took a lot of heat, making the launch platform core cooling in about 1000 degrees, effectively protect the rocket launchers inside the equipment. In addition, the system also has the advantage of reducing noise effects.
The future: birth of larger-diameter rocket
Diameter of existing launch vehicles in China, is limited by the width of a horse's ass? Yes, this interesting point of view can be traced back to the invention of the trains and the tracks.
Due to China's development and launching of the rocket has a long, mostly transport by train or car, the road will inevitably through some tunnels. And the width of the tunnel is determined by the distance between the tracks. Taking into account the train shook, Sinuiju and other factors, the diameter of the rocket would have been more limited.
Width of the train tracks followed the wagon wheel wide standard, wagon wheel wide all the way back to the Roman Chariots, Romans are in accordance with the two-horse Chariot's butt width setting. Therefore, the maximum diameter of China's existing launch vehicle is "stop" at 3.35 m.
Hainan Wenchang satellite launch Center is enabled, the limits can be broke, because the rocket could be by sea, are no longer constrained to the width of the tunnel. March of China's largest rocket will be launched in the second half of the year, fifth at 5 meters in diameter, the future, China will have a greater diameter of the rocket was born.
(Editors: Liu Cheng UN649)
2016-06-25 17:57:55
China News Network