A solar sail spacecraft in orbit 'sail'

Sheng wang hui introduced in 2018, the state grid areas of new energy given contradictions continue to ease, new energy power abandon of 26. 8 billion KWH, fell 35%. Abandoned electric rate 5. 8%, down 5. 2%.

although in science fiction movies, rely on the solar wind power spacecraft has been commonplace, but when 23 & other; Light sails throughout 2 &; Spacecraft in orbit really huge & other developed area of 32 square meters; Sail & throughout; When the international space community is still a piece of praise.

'scientific American website, 23, said the U. S. space organization & other; Planetary society & throughout; Announced, & other; Light sails throughout 2 &; Has successfully opened the sail, become & other; In earth orbit first fully by the solar wind driven spacecraft & throughout; 。 According to introducing, & other; Light sails throughout 2 &; Is the size of bread, it on June 25 aboard the ferry company & other; Falcon heavy & throughout; Rocket launch, after nearly a month after debugging, finally took a key step. “ Planetary society & throughout; Staff, according to the description & other; Light sails throughout 2 &; Four cobalt alloy stent spread outward like a tape measure, with 4 surface triangle solar sail unfolds, the whole process took about 3 minutes. These thin solar sails made of polyester fiber thickness smaller than the diameter of a hair.

according to the report, the principle of solar sail is the sun, the light photons to impact sails as power. “ Light sails throughout 2 &; Actual received power is small, & other; It was worth only a fly landed on earth hand force & throughout; 。 But in the absence of gravity and air resistance space, the power will let the ship the slow but steady speed. According to the & other; Planetary society & throughout; Calculation, with the aid of the sail of the power, & other; Light sails throughout 2 &; Orbit altitude 500 meters can improve every day.

the solar sail spacecraft only need illumination can be unrestricted for interstellar travel, if increase the solar panels on the surface of the sail, can also provide the necessary energy for spacecraft. So the sail is considered to be key technology of future interplanetary voyage. According to introducing, in the 17th century, the famous astronomer Johannes Kepler is puts forward the design of a solar sail spacecraft. But due to the material of solar sail and sail in space technology is difficult to breakthrough, these ideas have not been able to become a reality.

in 2010, Japanese & other; The icarus & throughout; The solar sail spacecraft flying to Venus, take the lead in the space of about 7. 7 million kilometres above the earth, successfully launched 14 meters in length square solar sails. This time & other; Light sails throughout 2 &; After the success, in 2020, NASA will also use solar sail on near-earth asteroids detector technology.