Institute of Manned Space System Engineering CAST

Beijing, China

Institute of Manned Space System Engineering CAST

Beijing, China
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Chuanfeng W.,Institute of Manned Space System Engineering CAST | Lantao Z.,Institute of Manned Space System Engineering CAST | Fanlu B.,Institute of Manned Space System Engineering CAST
Proceedings of the International Astronautical Congress, IAC | Year: 2015

The pressured cabin of manned spacecraft provides a hospitable enviroment for long-Term onboard residence, which can also be a good condition for the the growth of microbes. These microbes bring about certain risks to the astronauts' health and the safety of space station platform. On the basis of lacking experiences in microbe control in prior tasks, microbe control is of great importance problem on the process of spacecrafts designing in the future. The article analyzes six difficulties in microbe control in long-Term spacecrafts, and some corresponding countermeasures are proposed. .


Liu M.,Institute of Manned Space System Engineering CAST | Wei C.,Institute of Manned Space System Engineering CAST
Proceedings of the International Astronautical Congress, IAC | Year: 2015

The landing attitude of Return Capsule is the principal factor which affects on landing safety of astronauts besides landing shock for spacecraft, because when the landing attitude of Return Capsule is different the landing load of Return Capsule is also different. If the accident occurs in the Return Capsule landing process, the structure of Return Capsule will possibly be damaged and it may make astronauts injured, if the accident is serious, it may harm astronauts's life. In the landing process of Return Capsule which is affected by many random factors, different random factors will lead to different landing attitude of Return Capsule. Each of Landing attitude parameter of Return Capsule which includes many attitude parameter (such as vertical landing velocity, landing angle, resultant velocity, angular velocity and attitude angle)has different influence on landing attitude .The vertical landing velocity and the landing angle are the two most important parameters of landing attitude in these parameters. It is difficult to ensure the vertical landing velocity and the landing angle to meet the indicator requirements, because the two landing parameters are influenced by many factors, such as the mass, configuration, centroid of the Return Capsule, the design parameters of parachute, the thrust and action time of retro-rocket. Many factors are random which are unforeseen, such as wind speed, wind direction.air temperature, air pressurejandform and physiognomy.

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