For the purpose of ensuring normal operations of Shenzhou (SZ) series of manned spacecrafts and cosmonauts' safety, Space Environment Monitors (SEM)are mounted on board SZ-2, 3, 4, 5. SEMs aim to detect the high e...For the purpose of ensuring normal operations of Shenzhou (SZ) series of manned spacecrafts and cosmonauts' safety, Space Environment Monitors (SEM)are mounted on board SZ-2, 3, 4, 5. SEMs aim to detect the high energy particles, the low energy particles, charging potential, atmospheric desity and composition. Detection of SEMs enable us to understand better the space environment in the manned spacecraft's orbit, and to provide a good space environment services for the spacecraft and cosmonauts. In addition, by using the data from SEMs, we have achieved some scientific accomplishments, such as the energy spectra of precipitating electrons, the abnormal variety of atmospheric density and composition during geomagnetic disturbances, the electron angle distribution in the low orbit and so on.展开更多
Exposure to thermal environment is one of the main concerns for manned space exploration. By focusing on the works performed on thermoregulation at microgravity or simulated microgravity, we endeavored to review the i...Exposure to thermal environment is one of the main concerns for manned space exploration. By focusing on the works performed on thermoregulation at microgravity or simulated microgravity, we endeavored to review the investigation on space thermal environmental physiology. First of all, the application of medical requirements for the crew module design from normal thermal comfort to accidental thermal emergencies in a space craft will be addressed. Then, alterations in the autonomic and behavioral temperature regulation caused by the effect of weightlessness both in space flight and its simulation on the ground are also discussed. Furthermore, countermeasures like exercise training, simulated natural ventilation, encouraged drink, etc., in the protection of thermoregulation during space flight is presented. Finally, the challenge of space thermal environment physiology faced in the future is figured out.展开更多
为提高运载火箭上升段逃逸救生策略的覆盖性和有效性,采用基于模型的系统工程(model-based system engineering,MBSE)方法开展设计。首先,进行运载火箭逃逸救生任务分析,识别相关系统及其任务需求,建立任务需求模型。然后,根据运载火箭...为提高运载火箭上升段逃逸救生策略的覆盖性和有效性,采用基于模型的系统工程(model-based system engineering,MBSE)方法开展设计。首先,进行运载火箭逃逸救生任务分析,识别相关系统及其任务需求,建立任务需求模型。然后,根据运载火箭飞行程序,建立不同时刻的主要故障模型,研究提出不同故障的可能应对策略,形成功能需求模型。最后,在逻辑仿真中调用弹道仿真程序,验证了逃逸救生策略的可行性,实现了需求的闭环验证。通过采用该方法,完成了运载火箭上升段逃逸救生任务需求模型化,奠定了全任务周期数字化设计的基础,可为工程实践提供参考。展开更多
文摘For the purpose of ensuring normal operations of Shenzhou (SZ) series of manned spacecrafts and cosmonauts' safety, Space Environment Monitors (SEM)are mounted on board SZ-2, 3, 4, 5. SEMs aim to detect the high energy particles, the low energy particles, charging potential, atmospheric desity and composition. Detection of SEMs enable us to understand better the space environment in the manned spacecraft's orbit, and to provide a good space environment services for the spacecraft and cosmonauts. In addition, by using the data from SEMs, we have achieved some scientific accomplishments, such as the energy spectra of precipitating electrons, the abnormal variety of atmospheric density and composition during geomagnetic disturbances, the electron angle distribution in the low orbit and so on.
基金supported by the National Natural Science Foundation of China(50838003)the China Manned Space flight Project
文摘Exposure to thermal environment is one of the main concerns for manned space exploration. By focusing on the works performed on thermoregulation at microgravity or simulated microgravity, we endeavored to review the investigation on space thermal environmental physiology. First of all, the application of medical requirements for the crew module design from normal thermal comfort to accidental thermal emergencies in a space craft will be addressed. Then, alterations in the autonomic and behavioral temperature regulation caused by the effect of weightlessness both in space flight and its simulation on the ground are also discussed. Furthermore, countermeasures like exercise training, simulated natural ventilation, encouraged drink, etc., in the protection of thermoregulation during space flight is presented. Finally, the challenge of space thermal environment physiology faced in the future is figured out.
文摘为提高运载火箭上升段逃逸救生策略的覆盖性和有效性,采用基于模型的系统工程(model-based system engineering,MBSE)方法开展设计。首先,进行运载火箭逃逸救生任务分析,识别相关系统及其任务需求,建立任务需求模型。然后,根据运载火箭飞行程序,建立不同时刻的主要故障模型,研究提出不同故障的可能应对策略,形成功能需求模型。最后,在逻辑仿真中调用弹道仿真程序,验证了逃逸救生策略的可行性,实现了需求的闭环验证。通过采用该方法,完成了运载火箭上升段逃逸救生任务需求模型化,奠定了全任务周期数字化设计的基础,可为工程实践提供参考。
