Stratospheric airship buoyancy and pressure cooperative control method

Abstract

The invention provides a stratospheric airship buoyancy and pressure cooperative control method and belongs to the technical field of aircraft flight control. The method includes setting an upper limit value Pu and a lower limit value P1 of the pressure difference between the inside and the outside of a stratospheric airship body, measuring the air pressure P and P' inside and outside the stratospheric airship body respectively, calculating the pressure difference between the inside and the outside of the stratospheric airship body that Pe=P-P', comparing the pressure difference Pe and the upper limit Pu and the lower limit value Pl of the stratospheric airship body and adjusting the buoyancy and the pressure cooperatively by adopting a buoyancy lift airbag, an air bag and an adjusting airbag according to the relation. The thermodynamic parameters of a working medium are adjusted by a thermodynamic cycle device, so that the volume and the pressure of the adjusting airbag are changed, and the pressure and the buoyancy of the stratospheric airship are adjusted accordingly.

Description

technical field [0001] The invention belongs to the technical field of aircraft flight control, and in particular relates to a method for synergistic control of buoyancy and pressure of a stratospheric airship. Background technique [0002] Stratospheric airship refers to a floating aircraft that relies on buoyant gas to provide static lift, works at an altitude of 18-20km for a long time, and performs specific tasks. The stratospheric airship has the characteristics of long-term residence, low energy consumption, and reusability. Among them, long-term regional residence is its unique working mode and application advantage. The near-space aerostat can be developed into a new type of electronic information equipment combining "air", "near space" and "sky" by carrying payloads, and can be widely used in reconnaissance and surveillance, regional early warning, communication relay, electronic countermeasures, and navigation Military fields such as positioning and damage assessm...

AI Technical Summary

Problems solved by technology

In November 2010, the HiSentinel-80 test boat of the "High Altitude Sentinel" airship conducted its first flight test. It stayed in the air for 8 hours at a height of 20km, but was in a free-floating state due to a flight control failure. During the descent, it was caused by a failure of the helium valve. unable to land

In July 2011, HAA's test boat HALE-D (High Altitude Long Endurance-Demonstrator) conducted its first flight test, and the test failed due to insufficient net buoyancy when it rose to a height of 9.75km

Although this solution overcomes the shortcomings of a single capsule, it only has a single adjustment method of "air mass flow rate", which cannot effectively solve the problems of "super cold" and "super hot"; and the suction and exhaust flow rates of fans and valves are limited, so it cannot be realized Efficient buoyancy and pressure regulation

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