[Heat transfer analysis of liquid cooling garment used for extravehicular activity].

Brief description was given about the construction and function of the LCG (liquid cooling garment) used for EVA (extravehicular activity). The heat convection was analyzed between ventilating gas and LCG, the heat and mass transfer process was analyzed too, then a heat and mass transfer mathematical model of LCG was developed. Thermal physiological experimental study with human body wearing LVCG (liquid cooling and ventilation garment) used for EVA was carried out to verify this mathematical model. This study provided a basis for the design of liquid-cooling and ventilation system for the space suit.

[Incidence and prevention of space decompression sickness].

To expound the necessity that space decompression sickness (SDCS) should be separated from altitude DCS, comparison was made between the features of space DCS and altitude DCS. The etiology and pathogenesis of the space DCS and altitude DCS were the same, but the features of the rules leading to their incidences (included influencing factors etc.) were different. For the convenience of getting better systemic and definite knowledge about SDCS, and making effective preventive plans and theoretical expositous, SDCS should be taken as an independent professional term.

[Physiological basis of human mechanics and its application in the design of pressure suit].

Objective. To discuss the necessity that human mechanics and its physiological basis as applied to the research of human motion in many areas. Method. The motion performance of two aerospace [correction of areospace] pressure suit were studied. Human mechanics and its physiological basis was applied in the design of one suit only. Result. The result showed that good performance was obtained with the suit designed according to this principle which the stipulated actions couldn't be well performanced when wearing the suit not so designed. Conclusion. The research of the application of human mechanics and its physiological basis is necessary and it has better reality and is more scientific than applying biomechanics and robotics.

[On ergonomics of spacesuit].

The concept and the connotation of spacesuit ergonomics are specified. The method of ergonomics was applied to spacesuit design and the design demands for comfort, fitting and space compatibility of spacesuit are indicated systematically by applying anthropometry and building spacesuit size system (including weightlessness). Flexibility and posture of spacesuit are indicated with human mechanics (including weightlessness). The present situation of ergonomic research of spacesuit is discussed simply.

[Physiological analysis of a mathematical model for predicting somatic eigenstates under combined stresses].

Objective. To put a mathematical model for predicting human somatic eigenstates (HS) into practical engineering design of countermeasures against combined stresses (hypoxia, heat, noise and vibration) in an aircraft cabin, and confirm the model from the human physiological viewpoint. Method. Published works on these 4 stresses were employed to verify the main and interactive effects which had been previously proved mathematically. Result. The main effects of 4 stresses and the significant interactive effects of 2 from 4 stresses agreed with the published experiments in single or in the same combination of these stresses. Conclusion. The model is reasonable in human physiological consideration and has been adopted in engineering design.