Water sublimator water supply control method for coping with overload and back pressure

Abstract

The invention discloses a water sublimator water supply control method for coping with overload and back pressure. The method can achieve a purpose that a water sublimator avoids a breakdown phenomenon under the conditions of complex heat, overload and back pressure factors in space, and achieves a higher heat dissipation capacity at the same time. Firstly, the water supply starting time t1 of the water sublimator is determined according to a first constraint condition; a water supply interval t2 is determined according to the task demand and a second constraint condition; and the working water supply time t3 of the sublimator is determined according to the third constraint condition. Then, a specific water supply scheme is determined, a water sublimator is started, a control valve is opened to supply water to the water sublimator, and the duration is water supply starting time t1; the control valve is closed, water supply is stopped, and the duration is the water supply stopping interval t2; the control valve is opened again, and the duration is the working water supply time t3; and t2 and t3 are repeatedly calculated, the valve is turned off on time according to the result, and the control valve is turned on until the task is finished.

Description

technical field [0001] The invention relates to the technical fields of aerospace and heat transfer, in particular to a water supply control method for a water sublimator coping with overload and back pressure. Background technique [0002] The water sublimator is a thermal control device that works on the principle of sublimation of water working medium. It removes the waste heat of the spacecraft through the process of causing a consumable medium to undergo a phase change and finally discharges it into outer space, thereby realizing Heat dissipation for spacecraft thermal control systems. The water sublimator is simple in structure, small in size and light in weight. It is an indispensable thermal control measure when the spacecraft is not enough to provide sufficient heat dissipation surface, or other thermal control measures cannot function. It plays an important role in the thermal control system of foreign spacecraft, especially the thermal control of the life support...

AI Technical Summary

Problems solved by technology

However, this strategy cannot cope with harsh overload and back pressure environments. Under acceleration and back pressure conditions, continuous "breakdown" is almost inevitable

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