Average temperature calculation method of level flight process of stratosphere airship with solar cell

Abstract

The invention provides an average temperature calculation method of a level flight process of a stratosphere airship with a solar cell. According to the flight parameters of an airship, the design parameters of the airship, the characteristic parameters of airship body materials, the characteristic parameters of the solar cell and the characteristic parameters of cell thermal insulation materials, an atmospheric environment parameter and an airship thermal environment parameter are calculated, the airship is divided into a plurality of nodes on the basis of the geometrical characteristic and the heat transfer mode of the airship, an energy differential equation of each node is established, and the average temperature data of each node of the flight process of the airship is calculated through the solving of an energy differential equation set of multiple nodes of the airship. The average temperature calculation method has a guiding meaning on aspects including the design, the material selection, the flight experiment planning, the circumvention of potential dangers and the like of the stratosphere airship with the solar cell, can improve the one-time success rate of the design of the stratosphere airship with the solar cell, shortens the design period of the stratosphere airship with the solar cell and lowers the design cost of the stratosphere airship with the solar cell.

Description

technical field [0001] The invention belongs to the technical field of airship thermal control, in particular to a method for calculating the average 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 early warning, surveillance, 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. 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...

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 average temperature during level flight

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