Reinforced stratospheric airship internally provided keel

Abstract

The invention relates to a reinforced stratospheric airship internally provided with a keel. The reinforced stratospheric airship internally provided with a keel is mainly composed of the rigid truss support keel, an airship bag body, a solar cell module, an energy storage battery, a power propulsion system and an avionics system, wherein the airship bag body is formed by bump-type skin; a plurality of strip-shaped bumps are arranged on the bump-type skin; each strip-shaped bump is arranged in the length direction of the stratospheric airship; and the strip-shaped bumps are arranged along the outer circumference of the airship. According to the reinforced stratospheric airship internally provided with the keel,, the radius of curvature of the skin can be reduced, and a stress load, caused by pressure, of the skin of the airship can be reduced greatly so that the skin can withstand the overpressure state for a long time, and increment of the size of the airship is possible.

Description

technical field [0001] The invention relates to the field of aircraft aerostats, in particular to a reinforced stratospheric airship with a built-in keel. Background technique [0002] The airspace where the stratospheric airship resides is above 20km, and the air density at this altitude is one-twentieth that of the sea level atmosphere. Generally speaking, only the huge volume of the stratospheric airship can provide enough buoyancy to carry its own structural weight and load equipment and other loads . The huge size also makes the strength of the airship very sensitive to the pressure load it bears due to environmental changes, that is, small changes in environmental factors lead to a substantial increase in stress, and the strength of the airship is greatly challenged. [0003] According to the principles of engineering mechanics, the maximum stress of a stratospheric airship with a spiral shape is related to the maximum radius of curvature of the airship's circumferent...

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Problems solved by technology

The huge size also makes the strength of the airship very sensitive to the pressure load it bears due to environmental changes, that is, small changes in environmental factors lead to a substantial increase in stress, and the strength of the airship is greatly challenged

[0003] According to the principles of engineering mechanics, the maximum stress of a stratospheric airship with a spiral shape is related to the maximum radius of curvature of the airship's circumferential cross-section. As the size of the stratospheric airship increases, the maximum radius of curvature increases, resulting in the stress on the skin The load has increased significantly. Under the condition of the ultimate strength of the existing high-strength skin materials, the size of the hull is limited, and it is difficult to break through a larger size to meet the task requirements such as large load requirements. Further, the development of lightweight and high-strength materials is a basic Difficult to break through in a short time

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