High-altitude balloon-borne solar unmanned aerial vehicle system

Abstract

The invention provides a high-altitude balloon-borne solar unmanned aerial vehicle system. The high-altitude balloon-borne solar unmanned aerial vehicle system comprises a solar unmanned aerial vehicle, a high-altitude balloon, a hanging mechanism, a releasing mechanism and a traction rope. The solar unmanned aerial vehicle is a high-altitude super-long-endurance solar unmanned aerial vehicle, the high-altitude balloon is a disposable helium balloon, the hanging mechanism is of a carbon fiber frame structure, the releasing mechanism is an initiating explosive device rope cutter, and the traction rope is a macromolecular polyethylene rope. The solar unmanned aerial vehicle is hung to the height of 17 km or above through the high-altitude balloon and then released, ground rapid take-off, troposphere rapid crossing and high-altitude safe release can be achieved, the strict requirements for take-off runways, meteorological conditions and flight airspace are lowered, and the design difficulty of the solar unmanned aerial vehicle is lowered.

Description

technical field [0001] The invention relates to a high-altitude ball-borne solar unmanned aerial vehicle system, which belongs to the technical field of overall design of unmanned aerial vehicles. Background technique [0002] High-altitude ultra-long-endurance solar-powered UAVs fly at a high altitude and last for a long time. Usually, they can stay at an altitude of more than 20km for several days or even months at a time. However, its flight speed is slow and its wind resistance is weak. During the take-off and landing phase, it has very strict requirements on the runway conditions and meteorological conditions. During the climbing phase, especially when crossing the troposphere, it is often blown out by the wind for a long distance. Most of the flight risks of solar-powered UAVs for several days or months are concentrated in the hours of take-off, landing and climbing, so it is very important to choose a suitable way of taking off, landing and climbing. At the same time...

AI Technical Summary

Problems solved by technology

At the same time, there are many links and factors to be considered in the flight process from the ground to the high-altitude full-section and full-working conditions, which also increases the difficulty of designing solar drones.

[0003] Existing solar-powered UAVs mostly use autonomous roll-off and landing or vehicle-mounted roll-off, both of which have their own limitations: (1) The length and width of the runway at the take-off and landing field need to be sufficient to prevent the drone from slipping. out of the runway; (2) takeoff and landing must be carried out when the crosswind speed on the ground is very small (recommended below 3m / s), this kind of takeoff and landing weather window is usually difficult to find, and depends on accurate weather monitoring methods; (3) solar energy The climbing speed (average of about 1m / s) and flight speed (average of 10-30m / s) of UAVs are relatively small, and they may be blown out of the airspace by strong winds during the climb from the ground to high altitude; (4) The full-section solar UAV under working conditions has many constraints and is difficult to design. For example, there are great differences in the design of high-altitude motors and low-altitude motors.

[0004] At home and abroad, there are also UAV designs that use balloons to mount and launch, but most of them end in failure. The failures include the disappearance of the balloon in strong winds, and the tail spin crash of the UAV after detachment.

Images