China unveiled for the first time the designed external appearance of its Mars voyager which is expected to be launched around 2020. The voyager is designed to include the orbiting, landing and roving missions within itself. The unveiling was done through a press briefing held in Beijing where a public campaign is launched to get a name and an iconic logo for the voyager.
Chief designer of China's first Mars exploration mission, Zhang Rongqiao, told China Central Television that the voyager consists mainly of three parts - one as the orbiter and the other as the landing capsule with still another as the rover inside the latter.
"The voyager is an all-in-one composite. We need an orbiter to orbit Mars; we need a landing capsule and a rover for after-landing maneuvers. The landing capsule makes sure that the rover lands safely through the atmosphere of Mars. We call the rover Mars vehicle," explained the chief designer. Zhang added that the orbiter will remote sense on Mars while in orbit.
The chief designer has gone a bit further in explaining the landing capsule and rover. "In appearance, it looks like the re-entry capsule of the manned spacecraft; in effect, it deploys parachutes after the atmosphere slows it down; it then drops off its bottom cover and uses its bottom thrusters to apply the braking effect. When it gets close enough to the Mars surface, it falls out its landing legs which further decelerate through their own deceleration systems," said Zhang.
Zhang Rongqiao said that China has attained a lot of experience and technology in manned and unmanned space missions and that the country should make full use of its Moon exploration in its Mars mission. But what makes the Mars mission different from all previous missions lies in the unknown factors around and on Mars itself, according to the chief designer.
"We need a combination of different deceleration mechanisms in our Mars exploration mission; the key is how to coordinate them which we're not quite sure for now. It poses a tricky question to our mission," said Zhang.
China is completing its Mars exploration with two phases of landing probes and gathering samples from the surface of Mars before 2030, according to Zhang. "Years of theoretical expounding and experimenting combined with our technological accumulation have left us with no other option. We've got to go with the dominating international trend," says Zhang. The chief designer has disclosed that the research and development of China's first Mars voyager has been going smoothly.
"The Mars voyager has entered the stage of finalizing its layout planning on September 2, 2014. After 20 months of theoretical expounding and experimenting, the layout planning has moved into the stage of finalizing the prototype, through separate producing and manufacturing units and testing. This stage lasts about two years. Judging by its progress, the engineering of the Mars voyager is moving relatively smoothly against various difficulties," Zhang says.