NASA Creates the World's Largest Solar Sail Power Light Pressure Vessel

According to reports from foreign media, NASA and L'Garde Aerospace Co., Ltd., located in California, jointly created a new type of Sunjammer solar sail detector. The surface area can reach more than 1200 square meters, which is the world's largest solar sail powered spacecraft. Like other stars, the sun emits a huge amount of photons. The resulting solar wind creates "pressure" on objects. In many science fiction works, solar sails are considered to be a very "popular" space dynamic system. However, in reality, solar sail is indeed a technology that is very close to the current aerospace technology and is achievable.

Sunjammer solar sail detector will use polyimide film sail surface, strong thickness and thin thickness

Solar sail power is not an emerging concept. As early as 1610, Johannes Kepler noticed that the Shanwei had always turned away from the direction of the Sun, and mentioned similar ideas in his letter to Galileo. 400 years later, the Japanese Institute of Space Research and Development launched the IKAROS Solar Sail Detector, which was the first real solar sail power detector ever built and successfully launched on orbit. Japanese scientists passed the model. The detector tested the film-type polyimide solar sail surface and calculated the information on the acceleration generated by the solar wind. It finally took only six months to reach the orbit of Venus, completed the flying swept mission for the planet, and then entered the mission extension phase. .

NASA also designed a solar sail power detector called Nanosail-D. The total weight is only 30 kg. The material used to build the solar sail is a polyimide film. This high-tech material can be used to make spacecraft outside the spacecraft. The clothing not only provides thermal insulation but also shields against solar radiation and the impact of micrometeoroids. Because of its tough material, it can produce effective thrust under the impact of sun photons, about 0.1 Newton.

Although this figure is very small, it is not a trivial matter in space propulsion technology. It is much stronger than an ion thruster. Currently, NASA's star detector is using an ion thruster to explore the asteroid belt, from Vesta to Ceres. The more technologically advanced Sunjammer solar sail probe will have a huge sail area that will generate more effective thrust. This technology will save more flying fuel for future space probes and enable cheap interplanetary travel. (Everett/Compilation)

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