Personnel metabolism simulation system for comprehensive ground test of manned spacecraft

Abstract

The invention discloses a staff metabolism simulation system for ground comprehensive tests of a manned spacecraft. The staff metabolism simulation system mainly comprises an oxygen concentration simulation unit, a carbon dioxide simulation unit, a nitrogen simulation unit and a humidity simulation unit. The staff metabolism simulation system is connected with a sealed cabin through pipelines, and air circulates between the staff metabolism simulation system and the sealed cabin of the manned spacecraft. According to an input simulation staff number and each staff metabolism mode, a control system calculates control targets of the heat production quantity, the humidity production quantity, the oxygen consumption quantity and the carbon dioxide increase quantity in combination with a metabolism based empirical formula, and controls a fan, a valve, a compressor, a molecular sieve, a flow controller, a pump and a heater so as to achieve the control targets through data such as temperatures, pressure, flow and oxygen concentration in an acquisition system according to preset control logic. Compared with staff metabolism simulation systems in prior art, the staff metabolism simulation system has the advantages that no staffs are required for participating in the tests, and capacities of a thermal control system and an environment control system are simultaneously assessed; and compared with tests with the staff, test systems constructed by the staff metabolism simulation system are safer, higher in flexibility, longer in continuous running time and fuller in product assessment, and do not occupy cabin volume.

Description

technical field [0001] The invention belongs to the field of ground tests of manned spacecraft, and in particular relates to a personnel metabolism simulation system used for comprehensive tests of ground thermal control systems and environmental control systems of manned spacecraft. Background technique [0002] The spacecraft docking mechanism is generally used as an important part of the ground supporting mechanical equipment for spacecraft movement, parking or thermal testing, and is used for direct docking and fixing with the spacecraft. The ground test of a large manned spacecraft needs to assess the ability of the thermal control system and the environmental control system to maintain the manned environment for a long time, especially the long-term coordination performance of the two systems. Both the thermal control system and the environmental control system are affected by the metabolism of personnel. The impact of metabolic activity on the thermal control system ...

AI Technical Summary

Problems solved by technology

Some equipment in the environmental control system will release heat or need to be heated and regenerated when it is working. The gas purification effect of the system

The current test method of separately assessing the two systems cannot fully verify the performance of long-term coordination between the systems

The human body heat production simulator and the human body moisture production simulator can only simulate the heat and humidity effect of the human body, but cannot simulate the changes in gas components caused by metabolic activities

The method of using personnel to participate in long-term experiments has great unsafe factors in terms of physiology and psychology, and the test preparation period is long and the cost is high

In addition, if multiple devices are used to simulate effects such as heat production, humidity production, oxygen consumption, and carbon dioxide increase, it will not only occupy a large amount of space in the cabin, but the equipment itself will affect the distribution of the flow field

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