Monday , June 21 2021

The Chinese scientists say they have the key to build elevator to space. A what?



<P class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" content type = "text" = "The Chinese scientists developed of carbon fiber nanotubu say it with & # 39; robust enough to be used to build the space elevator. The team & # 39; research & # 39; Tsinghua University bbrevettja technology and published part of their research in the journal The Nature Nanotechnology earlier this year. 'Data-reactid = "31"> The Chinese scientists have developed carbon nanotubes of fiber to say that is b & # 39; robust enough to be used to build an elevator to space. Journal The Nature Nanotechnology earlier this year.

They said that the fiber is "in great demand in & # 39; & # 39 many areas, such as high-level sports equipment, ballistic armor, aeronautics, astronawtika and even space elevators". But it can lift & # 39; travels from Earth to space actually possible, or is it the science fiction stuff?

<H4 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "Lift & # 39; space? Why?'Data-reactid = "33">Lift & # 39; space? Why?

<P class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "" Although generations & # 39; research done R- rocket the most reliable form of & # 39; propulsion ever invented … the spacecraft remain cumbersome b & # 39; very seriously ", wrote the author of the science fiction Sir Arthur C Clarke The Fountains of Paradise in 1979. 'Data-reactid = "34"> "Although generations & # 39; research made the most reliable form of rocket & # 39; propulsion ever invented … the spacecraft are still very inefficient ", wrote Sir Arthur C Clarke The Fountains of Paradise in 1979.

The novel was the first popular account & # 39; idea described by the Russian scientist Konstantin Tsiolkovsky in 1895: the space elevator, system & # 39; Earth to space transportation such as elevators we use everyday but 300,000 times higher.

The appeal & # 39; & # 39 elevators; space comes & # 39; to find potentially much cheaper way to travel into space. It cost more than US $ 160 million to launch a satellite for one journey, but it is estimated that lift the space can & # 39; reduce that to less than US $ 2 million per person per trip.

<H4 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "How does it work?'Data-reactid = "39">How does it work?

The basic concept of & # 39; & # 39 elevators; space involves cable anchored to the Earth's surface and connected to & # 39; counterweight to be sent into space. If the cable is long enough – 36 000 km (22 369 miles) or three times the Earth's diameter – will be pulled and carded a steep gravity and centrifugal force.

The theory is that a vehicle can & # 39; then travel along the cable, pushed by the rotational energy of the Earth. It revolutionized travel in space, but the design and discovery & # 39; & # 39 b material; his health enough for the idea is & # 39; a major challenge.

The two satellites launched in Japan & # 39; September in the first experiment to study the movement of the elevator into space, involving a mini-lift cable from a satellite traveling on to another. Yet to report results. China has also carried out tests & # 39; tethering & # 39; space but did not disclose details.

<H4 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "Who came up with the idea?'Data-reactid = "52">Who came up with the idea?

Rocket scientist Tsiolkovsky first established the concept back in 1895, he was thinking celestial castle in space linked to the World by a huge tower. The Russian engineer Yuri Artsutanov took moreover, developed a modern version of & # 39; space & # 39; lift based on the model & # 39; Tsiolkovsky.

The American space scientist and engineer Jerome Pearson published the first technical paper on the concept in 1975, which gained attention among the scientific community. Four & # 39; years later, the writer Clarke scientific idea facilitated by carrying out design & # 39; Pearson in his noble about the space elevator.

Scientists have been trying since then to refine the design and develop new materials to bring the concept closer to reality.

<H3 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" Content type = "text" = "Who needs street lights? Plans of & # 39; Chinese fake moon plans'Data-reactid = "56"> Who needs the street lights? China Moon Chinese fake Plans

<H4 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "What makes the building & # 39; so difficult space elevator?'Data-reactid = "57">What makes the building & # 39; so difficult space elevator?

The three biggest challenges to be overcome are buckling, dynamic stability and strength. Scientists believe they can control buckling and dynamic stability with the help of & # 39; satellite, f & # 39; orbit Geostationary at the right altitude, to ensure that the cable does jinġibx & # 39; down from the gravity of Earth or fly & # 39; away.

But the health problem to be solved because the lift space needs material in & # 39; his health enough to withstand the weight and massive stress involved.

<P class = "canvas canvas atom Mb test (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "" The health requirements are extremely demanding, but the required ratio between strength and weight is theoretically available in perfect crystal of graphite, "Pearson wrote in his paper, published in the journal Acta Astronautica'Data-reactid = "64"> "The health requirements are extremely demanding, but the proportion required between strength and weight is theoretically available in perfect crystal of graphite," Pearson wrote in his paper, published in – Acta Astronautica.

The super power cable, a very strong need for space elevator requires a tensile strength – to withstand stretching – of & # 39; at least 7 gigapascals, according to Nasa. The team & # 39; Tsinghua say that the end of the carbon fiber has tensile strength nanotubu & # 39; 80 gigapascals.

Nicola Pugno, professor of solid and structural mechanics at the University & # 39; Trento in Italy, said the new fiber of Chinese researchers was promising.

<H3 class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" Content type = "text" = "Hotels in Space – the final frontier for travel & # 39; luxury or hard science fiction?'Data-reactid = "83"> Hotels in Space – the final frontier for travel & # 39; luxury or hard science fiction?

<P class = "atom Canvas canvas Mb text (1.0em) Mb (0) – sm Mt (0.8em) – sm" type = "text" content = "" Having a mega cable b & # 39; 'health keep health and impaired tolerance are the biggest challenge, "Pugno said." the nature Nano report [from the Tsinghua team] is a major step towards the solution … therefore, never say never. "" Data-reactid = "84"> "Having a mega cable b & # 39; his health and maintain power and its faulty tolerance is the biggest challenge," Pugno said. nature Nano report [from the Tsinghua team] is a major step towards the solution … therefore, never say never. "

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