Pressure regulation and control method and system for stratospheric airship

Abstract

The invention provides a pressure regulation and control method and system for a stratospheric airship. A pressure regulation and control capsule body is arranged in a main capsule body of the stratospheric airship. The pressure of buoyancy lift gas in the main capsule body is increased or decreased due to the temperature change in the day and night operation process in the main capsule body. A part of buoyancy lift gas in the main capsule body is pressed into the pressure regulation and control capsule body or the gas in the pressure regulation and control capsule body is released to enter the main capsule body so as to achieve pressure regulation, so that the pressure of the main capsule body remains stable. According to the pressure regulation and control method and system for the stratospheric airship, the problem that a pressure regulation and control mode is irreversible due to the day and night state change in the long-term operation process of a current stratospheric airship can be solved, and the stratospheric airship is promoted to be practical as soon as possible.

Description

technical field [0001] The invention mainly relates to the field of aircraft technology, in particular to a pressure control method and a control system for a stratospheric airship working for a long time. Background technique [0002] The stratospheric airship is a controllable aircraft that is lighter than air. It mainly relies on the buoyancy generated by the buoyant gas in the capsule structure to achieve weight balance. It mainly relies on solar cells and energy storage batteries to form a closed-loop energy system to achieve long-term stability. Flying, this type of aircraft works in the stratosphere altitude area near 20 kilometers from the ground, taking advantage of the stable atmospheric environment in this area, taking advantage of the characteristics of the low-speed wind field in this area, resisting wind with less propulsion energy, combined with closed-loop energy The system can realize the airborne flight capability over an area of ​​the annual level. [000...

AI Technical Summary

Problems solved by technology

[0005] However, during the long-term resident period of the stratospheric airship, the solar radiation during the day will cause the temperature of the capsule body and the internal buoyant gas to rise continuously, which will cause a large increase in the air pressure inside the stratospheric airship capsule. Under the condition of certain pressure capacity, the oversized size will reduce the compressive capacity of the main capsule, which puts forward very stringent requirements for the skin material; the decrease of the surface temperature of the capsule at night will lead to a large decrease in the pressure inside the capsule of the stratospheric airship , not only is it difficult to guarantee the shape of the airship, but it will also cause buoyancy loss and cause the airship to descend; if the overpressure conformal state is set according to the night, the pressure will increase significantly when the temperature is high during the day, and the safety of the inflatable structure is prominent under the high pressure state; in addition On the one hand, under the condition of large pressure difference, the leakage loss of buoyant gas is large, and the buoyancy loss is large after day and night cycle, which makes it impossible to operate for a long time

[0006] The pressure fluctuation of the main capsule caused by the temperature difference between day and night is still a stumbling block to the practical use of stratospheric airships. At present, the pressure regulation method mostly adopts the method of releasing buoyant gas when the pressure is high, and throwing sand at night to reduce the weight of the system. Causes the irreversibility of the operating state of the system, and the stratospheric airship cannot achieve its long-term operation

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