Viewings: 3813
In the Japanese space Agency say that their problem spacecraft akatsuki, "missed draw" past the orbit of Venus two years ago, has now reached a preliminary trajectory of convergence and in 2015 it may once again try to gain a foothold in orbit around Venus.
Japanese spacecraft Akatsuki (Dawn) was to go into orbit around Venus in December 2010, but then its main engine joined too late and insufficient traction force, which is not allowed to slow the vehicle to the extent that the gravity of Venus was hooked the machine and it started on a circle to rotate on Venus. Eventually, the machine jumped outside of Venus and went to the second circle around the Sun in its elliptical orbit.
Now Japanese experts say that the main engine of Akatsuki apparently broke down and under normal conditions, the device would not be able to fly to Venus for the second time, but Akatsuki there are several small engines for stabilization. On them is the machine now and flies and that through them he will try to gain a foothold in orbit around Venus. Initially, these engines were intended for altitude control in orbit around Venus.
"Initially we did not plan to use these engines so they were not designed to orbital braking. In principle, these engines can be used for fixing the unit on orbit, we will try to do it," said Takeshi Imamura, a representative of the Japanese space Agency Jaxa.
However, the use of non-standard motors is not the only problem. After the device is "missed" by Venus two years ago, in the second approach to the planet Venus is closer to the Sun than in December 2010, as a result, Akatsuki will hit large flows of radiation and thermal radiation than initially expected. Imamura said that technically, the machine must handle the data of radiation levels, although for sure is possible only in practice.
Recall that the device akatsuki cost Japan 300 million, he was launched into space in may 2010, simultaneously with the Japanese machine Ikarus, who worked on a solar sail. In orbit around Venus akatsuki had to work for two years, but now this term will be less. Complete turn around Venus akatsuki had to do for 30 terrestrial hours.