Calculation method of temperature distribution during level flight of stratospheric airship with solar cells

Abstract

The invention provides a distribution temperature calculation method for a stratospheric airship with a solar cell during a flat flying process. The distribution temperature calculation method comprises the steps of firstly calculating an atmosphere environment parameter and an airship radiation heat environment parameter and establishing an airship distribution temperature calculation domain based on geometrical characteristics and a heat transfer mode of the airship; then dispersing the calculation domain by utilizing structured grids, establishing mass, momentum and energy differential equations of each differential element; and finally simultaneously resolving equation sets of all the differential elements in the calculation domain based on the airship body material of the airship and characteristic parameters of the solar cell, and calculating the distribution temperature of the airship during the flat flying process. The distribution temperature calculation method for the stratospheric airship with the solar cell during the flat flying process has a guiding significance in the aspects such as design, material selection, flight test planning and evasion of potential hazards of the stratospheric airship with the solar cell; the one-time success rate of the design of the stratospheric airship with the solar cell can be increased; the design period of the stratospheric airship with the solar cell can be shortened; and the design cost of the stratospheric airship with the solar cell can be reduced.

Description

Technical field [0001] The invention belongs to the technical field of airship thermal control, and in particular relates to a method for calculating the distribution temperature of a stratospheric airship with solar cells during level flight. Background technique [0002] Stratospheric airships have the advantages of fixed-point flight, long time in the air, and high resolution. They have broad application prospects in the fields of airborne early warning, surveillance and monitoring, and civil communications, and are highly valued by major powers in the world. [0003] During the level flight of a stratospheric airship, factors such as ambient temperature, density, pressure, wind speed, solar radiation, atmospheric radiation and ground radiation will affect the temperature characteristics of the airship. Too high temperature will increase the helium pressure inside the airship, which will have an important impact on the airship: 1. Too high temperature will change the bearing cha...

AI Technical Summary

Problems solved by technology

Excessively high temperature will increase the helium pressure inside the airship, which will have an important impact on the airship: 1. Excessively high temperature will change the load-bearing characteristics of the airship hull material, increase the thermal stress of the airship hull, and increase the tension of the airship hull, which will have a great impact on the airship. 2. Changing the force condition of the airship will cause the flight altitude of the airship to fluctuate and interfere with the execution of the airship’s mission.

Therefore, accurate knowledge of the temperature characteristics of an airship during level flight is of great significance for airship structural design, material selection, flight test planning, and potential danger avoidance. Calculation method of temperature distribution during level flight

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