Chang’e 3 Lunar Lander Cameras Underwent Extended Tests

<正>Chang’e 3 lunar lander conducted extended tests on the surface of the moon after awakening from its dormancy.It was announced in the late of January that the pointing mechanism of the cameras onboard Chang’e 3 underwent extended tests to confirm the moving performance and limit switch triggering of the pointing mechanism under various status while pitching,moving forward and backward.According to the analysis derived from the remote     

Chang’e 2 Hits 20 Million Kilometers Milestone

The Chang’e 2 satellite, developed and launched by CASC, has travelled deeper into outer space at about 20 million km from the Earth, marking a new breakthrough in the ability of the nation’s lunar and deep space exploration project. The probe is now continuing its deep space travel under normal conditions. CASC undertook the development and launch of lunar satellite and launch vehicle for the nation’s lunar exploration program. On October 24, 2007, the first indigenously developed lunar exploration satellite, Chang’e 1, was launched into space successfully. Chang’e 2 was put into orbit on October 1, 2010 from the Xichang Satellite     

Technological Achievements of Chang’e 2 and Considerations for China’s Deep Space Exploration

Chang’e 2 is China’s second lunar probe,with main goals of demonstrating some key technologies for the following lunar soft landing mission,and implementing further lunar exploration.On completing the     

Chang’e 5-T1 Service Module Conducted in-orbit Demonstration for Future Mission

<正>The service module of Chang’e 5-T1 has been conducting an in-orbit demonstration for the Chang’e-5 mission since it was left in space.The service module departed Earth-Moon L2 point finishing its extended L2 point fly-by tests on January 4and entered a 127-minute circumlunar round orbit on January 13 with an altitude of 200km and inclined angle of 43.7degrees after three braking actions at perilune on January 11,12 and 13.During the L2 point fly-by,the cameras on-     

Simulation Matching Test Of Spacecraft And Ground Station Of Lunar Exploration Project Completed

Recently, a faint signal just like that from more than 300,000km away was captured in Urumqi by the units including China National Space Administration, Chinese Academy of Space Technology (CAST), China National, the National Astronomical Observatory of China (NAOC), Shanghai Astronomical Observatory of Chinese Academy of Sciences and Urumqi Astronomical Observatory of NAOC and thus the simulation matching test of the Chang'e-1 simulated spacecraft and ground station was complete…     

Vibro-bench With the World’s Largest Thrust Completed Testing

According to the Beijing Institute of Structural and Environmental Engineering of CALT,its independentdeveloped 70-ton super thrust electric vibro-bench has completed testing in Tianjin.It has become the electric vibro-bench with the largest thrust in the world so far with its thrust doubled compared with the existing largest one of 35-ton thrust.Zhang Qiaoshou,the Chief Designer of the vibro-bench expressed that the electric vibro-bench could simulate the vibration environment during transportation and flight of spacecraft,which is necessary for the research and de-     

Laser IMU Test on LM-3A Successful

Data analysis and review show that the test of a laser inertial measurement unit (IMU) during LM-3A'sflight in May is successful. This is the first time for China to test such a unit. Application of the laser IMU, developed by Beijing     

The LM-3A Launch Vehicle Made Its Successful Test Flight

On Feb.8,1994,Long March 3A,a new powerful launch vehicle developed by China,successfully launched a scientific satellite (SJ-4) with 6 detectors on it and a dummy satellite into space from Xi-chang Satellite Launch Center.Based on the LM-3,the LM-3A is designed to launch large communications satellites and has a capability of launching a 2-5-ton satellite into geosynchronous transfer orbit.The scientific satellite launched by the LM-3Ais designed for space environment monitoring and environmental effect testing     

Determination of attitude motion of the <Emphasis Type="Italic">Foton M-3</Emphasis> satellite according to the data of onboard measurements of the Earth’s magnetic field

The results of reconstruction of rotational motion of the Foton M-3 satellite during its uncontrolled flight in September 2007 are presented. The reconstruction was performed by processing the data of onboard measurements of the Earth’s magnetic field obtained by the DIMAC instruments. The measurements were carried out continuously throughout the flight, but the processing technique dealt with the data portions covering time intervals of a few orbital revolutions. The data obtained on each such interval were processed jointly by the least squares method with using integration of the equations of satellite motion relative to its center of mass. When processing, the initial conditions of motion and the used mathematical model’s parameters were estimated. The results of processing 16 data sets gave us complete information about the satellite motion. This motion, which began at a low angular velocity, had gradually accelerated and in five days became close to the regular Euler precession of an axisymmetric solid body. At the end of uncontrolled flight the angular velocity of the satellite relative to its lengthwise axis was 0.5 deg/s; the angular velocity projection onto the plane perpendicular to this axis had a magnitude of about 0.18 deg/s.