scholarly journals China’s Mars Exploration Mission and Science Investigation

2021 ◽  
Vol 217 (4) ◽  
Author(s):  
Chunlai Li ◽  
Rongqiao Zhang ◽  
Dengyun Yu ◽  
Guangliang Dong ◽  
Jianjun Liu ◽  
...  
Keyword(s):  
Scientific Investigation ◽  
Mars Exploration ◽  
Science Investigation ◽  
Exploration Mission ◽  
Scientific Achievements

AbstractChina’s first Mars exploration mission (HuoXing-1) has been named as ‘Tianwen-1’ meaning Heaven Inquiry. Tianwen-1 was launched on July 23, 2020. In this paper, the scientific objectives of earlier and current Mars exploration missions worldwide are reviewed, and the scientific objectives, payloads and preliminary scientific investigation plan of China’s first Mars exploration mission are introduced, and expected scientific achievements are analyzed.

Open loop tracking in 1st Chinese Mars exploration mission: Yinghuo-1 Martian orbiter

2009 ◽  
Author(s):  
Ping Jinsong ◽  
Qian Zhihan ◽  
Ye Shuhua ◽  
Hong Xiaoyu ◽  
Shang Kun ◽  
...  
Keyword(s):  
Open Loop ◽  
Mars Exploration ◽  
Exploration Mission

scholarly journals MISSION PROFILE AND DESIGN CHALLENGES FOR MARS LANDING EXPLORATION

2017 ◽  
Vol XLII-3/W1 ◽  
pp. 35-39
Author(s):  
J. Dong ◽  
Z. Sun ◽  
W. Rao ◽  
Y. Jia ◽  
L. Meng ◽  
...  
Keyword(s):  
New Technologies ◽  
Martian Surface ◽  
Descent Module ◽  
Mars Exploration ◽  
Landing Platform ◽  
Landing Sites ◽  
Exploration Mission ◽  
Mission Profile ◽  
Selection Of ◽  
Critical Subsystem

An orbiter and a descent module will be delivered to Mars in the Chinese first Mars exploration mission. The descent module is composed of a landing platform and a rover. The module will be released into the atmosphere by the orbiter and make a controlled landing on Martian surface. After landing, the rover will egress from the platform to start its science mission. The rover payloads mainly include the subsurface radar, terrain camera, multispectral camera, magnetometer, anemometer to achieve the scientific investigation of the terrain, soil characteristics, material composition, magnetic field, atmosphere, etc. The landing process is divided into three phases (entry phase, parachute descent phase and powered descent phase), which are full of risks. There exit lots of indefinite parameters and design constrain to affect the selection of the landing sites and phase switch (mortaring the parachute, separating the heat shield and cutting off the parachute). A number of new technologies (disk-gap-band parachute, guidance and navigation, etc.) need to be developed. Mars and Earth have gravity and atmosphere conditions that are significantly different from one another. Meaningful environmental conditions cannot be recreated terrestrially on earth. A full-scale flight validation on earth is difficult. Therefore the end-to-end simulation and some critical subsystem test must be considered instead. The challenges above and the corresponding design solutions are introduced in this paper, which can provide reference for the Mars exploration mission.

scholarly journals Improving the Accuracy of the Martian Ephemeris Short-Term Prediction

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Quan Shan ◽  
Peijia Li ◽  
Yong Huang ◽  
Min Fan ◽  
Haitao Li ◽  
...  
Keyword(s):  
Prediction Accuracy ◽  
Arc Length ◽  
Short Term ◽  
Mars Exploration ◽  
Obvious Effect ◽  
Term Prediction ◽  
Exploration Mission ◽  
Short Term Prediction ◽  
Orbit Insertion ◽  
Better Than

The Chinese Mars exploration mission is planned to be launched in 2020, which includes an orbiter, a lander, and a rover. High precision Martian ephemeris is very important in Mars exploration, especially for the Martian orbit insertion and the Martian lander/rover landing. In this paper, we used simulation data to analyze the short-term prediction accuracy of the Martian ephemeris. The simulation results show that the accuracy of Mars position is expected to be better than 50 m for 180-day prediction, when 90-150 days’ range measurements are used to estimate the orbit of the Mars. Range bias affects the prediction accuracy and the arc length for estimation is limited. The prediction accuracy will improve with higher orbit, and the orbit error of probes has an obvious effect on the prediction accuracy of the Martian ephemeris.

scholarly journals Planning and Design Method for Heavy Launch Vehicle Launch site for Manned Mars Exploration Mission

2020 ◽  
Vol 1639 ◽  
pp. 012004
Author(s):  
Jun-xin Zhang ◽  
Wen-an Zhong ◽  
YE Xin ◽  
Hong-liang Jia ◽  
Yu-chao Wang ◽  
...  
Keyword(s):  
Design Method ◽  
Launch Vehicle ◽  
Mars Exploration ◽  
Planning And Design ◽  
Launch Site ◽  
Exploration Mission

scholarly journals RESEARCH ON THE DIGITAL SIMULATION FOR THE WHOLE PROCESS OF MARS EXPLORATION

2018 ◽  
Vol XLII-2 ◽  
pp. 629-635
Author(s):  
L. Lyu ◽  
Q. Xu ◽  
Y. Zhou ◽  
S. Xing ◽  
W. Lu ◽  
...  
Keyword(s):  
Digital Simulation ◽  
Mars Exploration ◽  
Whole Process ◽  
Time Space ◽  
Geographical Environment ◽  
Visualization Process ◽  
Collection Data ◽  
Pyramid Model ◽  
Exploration Mission ◽  
And Behavior

China has paid considerable attention to space exploration and made great strides in the field. The first Chinese Mars Exploration Mission will be carried out in 2020. Digital simulation has been proved to be an effective and efficient means for planning and deduction in many fields. Thus, it was introduced for the Mars exploration in this paper and key technologies was researched above three aspects. First of all, complicated time-space benchmark was combed to support the interplanetary simulation. Secondly, the multi-resolution pyramid model and indexing strategy were adopted to preprocess the geographical environment data, which ensured the efficiency of data loading, browsing, and querying. Then, the activity objects were abstracted and modelled based on four aspects, including property, ephemeris, geometry, and behavior. Therefore, a digital simulation system, called Sino-Mars, was developed. The architecture of Sino- Mars consists of five layers, including data collection, data processing, scenario modelling, visualization and application layer. Using the Chinese Mars Exploration Mission slated for 2020 as an example, we demonstrated the capabilities of Sino-Mars for data integration, visualization, process deduction, and auxiliary analysis.

Study of Non-Ablative Lightweight Thermal Protection System for Mars Exploration Mission

2012 ◽  
Author(s):  
Toshiyuki Suzuki ◽  
Takuya Aoki ◽  
Toshio Ogasawara ◽  
Takashi Ozawa ◽  
Kazuhisa Fujita ◽  
...  
Keyword(s):  
Thermal Protection ◽  
Thermal Protection System ◽  
Protection System ◽  
Mars Exploration ◽  
Exploration Mission

scholarly journals Navigation Performance of the Libration Point Satellite Navigation System for Future Mars Exploration

2015 ◽  
Vol 69 (1) ◽  
pp. 41-56 ◽  
Author(s):  
Lei Zhang ◽  
Bo Xu
Keyword(s):  
Navigation System ◽  
Unscented Kalman Filter ◽  
Libration Point ◽  
Satellite Navigation ◽  
Reference Scenario ◽  
Satellite Constellations ◽  
Mars Exploration ◽  
Satellite Navigation System ◽  
System A ◽  
Exploration Mission

Based on the candidate architectures of the libration point satellite navigation system, a Mars navigation performance analysis is conducted in this paper to further verify the feasibility of the Universe Lighthouse. Firstly, a high-fidelity Mars exploration mission is developed as the reference scenario. Then, with the use of a novel adaptive unscented Kalman filter, navigation performance of the candidate Earth-MoonL1,2,4,5four-satellite constellations is evaluated by Monte-Carlo simulations. The final results indicate that the libration point satellite navigation system is available for Mars navigation and the effects of different constellation configurations and measurement types are also compared and analysed.

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