scholarly journals An anthology of outstanding achievements in science and technology. Part 18: Rocket engineering and near-space exploration.

2014 ◽  
Vol 0 (1) ◽  
pp. 3-14
Author(s):  
M. I. Baranov
Keyword(s):  
Space Exploration ◽  
Science And Technology ◽  
Near Space

scholarly journals Research and Verification of Key Techniques in the Simulation of Space Extremely Rapid Decompression in Millisecond

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Junwei Wang ◽  
Lei Zhang ◽  
Guohua Li ◽  
Ran Liu ◽  
Juan Ning ◽  
...  
Keyword(s):  
Cfd Simulation ◽  
Space Exploration ◽  
Mathematical Formulation ◽  
Effect Assessment ◽  
Near Space ◽  
Deep Space Exploration ◽  
Protection Technology ◽  
Rapid Decompression ◽  
Key Techniques

The research of rapid decompression with its effect assessment and protection technology is the problem that must be faced by the future exploration projects such as near space exploration, deep space exploration, and long-term lunar or Mars base. A new reusable quick opening mechanism which can be opened in millisecond is designed to meet the testing requirement of ground simulator for extremely rapid decompression, and the testing results show that the quick opening mechanism can be opened within 0.1 s. The mathematical formulation is also developed, and the comparisons with the results from the literature demonstrate its validity. The CFD simulation and the verification system are established for the airflow in the rapid decompression process under different opening degrees. The simulation results show that the effect of the opening on the decompression process is very obvious and the decompression time corresponding to 50%, 75%, and 100% opening is 479.1 ms, 320.7 ms, and 290.1 ms, respectively. The testing results also show a consistent trend which is 583 ms, 450 ms, and 384 ms, respectively, to reach the equilibrium state.

scholarly journals Space IT platforms: challenges of the XXI century

2018 ◽  
Vol 44 ◽  
pp. 00047
Author(s):  
Vadim Korablyov ◽  
Alexander Zheleznyakov
Keyword(s):  
21St Century ◽  
Rapid Growth ◽  
Space Exploration ◽  
Earth Orbit ◽  
Near Space ◽  
The Earth ◽  
Asteroid Hazard ◽  
The Stability ◽  
Intellectual Potential ◽  
Near Future

More than half a century of man-in-space exploration not only demonstrated the new manufacturing capabilities of the countries involved in the study of distant and near space, but also presented the main challenges that humanity will face in the exploration of the space in the first half of the 21st century. One of these challenges is the rapid growth in a number of satellites used not only by government structures, but also by private sector. This problem gives rise to another one – ensuring the safety of the satellites flights and contamination of the earth orbit by man-made objects. A particular problem is the growing militarization of the space. There is another natural challenge such as a cometary-asteroid hazard. In the near future, humanity has to answer these challenges. This is important for two reasons. Firstly, only overcoming them, we will be able to continue our expansion in the space. And, secondly, only by solving the encountered problems, we will be able to maintain the stability on the Earth. An important factor for a successful response to the challenges is international cooperation in space, which allows combining the resources of space powers including intellectual potential. In this case, we can rely on the soonest achievement of the set goals. Of course, this will mark new frontiers, which will be a challenge for the next generations.

Laboratory Simulation of Lunar Luminescence

1962 ◽  
Vol 14 ◽  
pp. 441-444 ◽  
Author(s):  
J. E. Geake ◽  
H. Lipson ◽  
M. D. Lumb
Keyword(s):  
Science And Technology ◽  
Laboratory Simulation ◽  
The Moon ◽  
Physics Department ◽  
Luminescent Spectrum

Work has recently begun in the Physics Department of the Manchester College of Science and Technology on an attempt to simulate lunar luminescence in the laboratory. This programme is running parallel with that of our colleagues in the Manchester University Astronomy Department, who are making observations of the luminescent spectrum of the Moon itself. Our instruments are as yet only partly completed, but we will describe briefly what they are to consist of, in the hope that we may benefit from the comments of others in the same field, and arrange to co-ordinate our work with theirs.

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