Downward-throwing type sonde with dandelion-like structure

Abstract

The invention discloses a downward-throwing type sonde with a dandelion-like structure. Upper and lower rotor wings of the sonde are not liable to damage in a severe environment, the normal use can beguaranteed even if a small number of rotor wings are damaged, and the sonde can be suitable for the detection of typhoon and other severe weather. When the upper and lower rotor wings are in a closedstate, the sonde is catapulted to a preset height, the upper and lower rotor wings are automatically opened, then the upper and lower rotor wings slowly fall down, a double-layer rotor wing structureis adopted, the inclination directions of the upper and lower rotor wings are opposite, airflow in opposite directions is generated under the action of an external environment, the rotation directions of the upper and lower rotor wings are opposite, air resistance can be enhanced, and longer hang time is obtained. By adjusting inclination angles of the upper and lower rotor wings, the descendingspeed of the sonde can be controlled, and ideal hang time is obtained. The analog resistance is adjusted by using a microcontroller, the relative torsional moment borne by each upper rotor wing and each lower rotor wing during rotation is changed, the relative rotation speed of the upper and lower rotor wings is changed, the descending speed of the sonde can be controlled, and the ideal hang timeis obtained.

Description

technical field [0001] The invention relates to the technical field of measuring meteorological parameters in airport information systems, especially meteorological parameters under extreme conditions such as typhoons, and in particular to a drop-down sonde with a structure imitating a dandelion. Background technique [0002] Typhoon is a catastrophic weather system with strong destructive power. There are more than 60 typhoons in the world every year, and 7.6 typhoons land in my country every year. A typhoon is a deep low-pressure system with low air pressure in the center. There is a significant converging airflow in the lower layer, and the airflow at the top diffuses outward. The structure of the typhoon is complex, and it is divided into three areas from the center to the outside: the eye area of ​​the typhoon, the cloud wall area and the spiral rain area. When a typhoon crosses the border, it will be accompanied by strong convective weather, which will cause great har...

AI Technical Summary

Problems solved by technology

Because the internal environment of the typhoon is harsh, the wind speed is extremely strong, and it contains various cloud water ice crystal particles, which are very destructive, therefore, the airbag structure of the existing dropsonde is easily damaged, which will cause the radiosonde to fail to reach The scheduled time of staying in the air not only wastes manpower and material resources, but also delays the preparations for disaster prevention due to the inability to obtain typhoon trends in time

[0004] In the existing dropsondes, the film of the airbag structure is made of polyethylene, and the reliability of the radiosonde is generally enhanced by increasing the thickness of the polyethylene film. Even so, it is not suitable for typhoon detection

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