Airplane parachute cabin cover and parachute cabin opening mode

Abstract

The invention discloses an aircraft parachute cabin cover and a parachute cabin opening mode, and belongs to the technical field of unmanned aerial vehicle recycling. Comprising a parachute cabin cover assembly, a cabin opening device and a position indicating device. The parachute cabin cover assembly is installed at a parachute cabin opening of the unmanned aerial vehicle, the fixed end of the parachute cabin cover assembly is hinged to the parachute cabin opening through a gooseneck connector, and the free end is connected with the parachute cabin opening through a cabin opening device. The cabin opening device comprises a power source initiating explosive device and a fastening screw; the power source initiating explosive device is in threaded connection with the machine body base through tail external threads, and a threaded hole is formed in the top of the power source initiating explosive device. A fastening screw penetrates through the free end of the parachute cabin cover and is screwed into a threaded hole of the power source initiating explosive device, so that the parachute cabin cover is fixedly connected with the fuselage, and the integrity of the aerodynamic shape of the unmanned aerial vehicle in the flying process is guaranteed; the position indicating device is installed at the position, corresponding to the free end of the parachute cabin cover, of the opening of the parachute cabin, judges whether the parachute cabin cover is opened or not through on-off of a microswitch circuit in the position indicating device, and provides a parachute cabin cover position feedback signal for the flight control system. The parachute hatch cover can be rapidly produced in a large scale, and the cost is low.

Description

Technical field [0001] The present invention belongs to the field of drone recovery, and in particular to aircraft umbrella cover and an umbrella. Background technique [0002] In a small and medium-sized drone recovered by an umbrella, the umbrella cover is the necessary composition of the recovery device, which is used to maintain the intact of the drone, and the umbrella cover is opened to open the channel for the umbrella. The connection of the umbrella cover and the body is generally used in two ways, namely hinges or latches, such as Figure 9 The hinge shown in "Design of a certain UAC Umbrella Recycling System" can also be replaced with a latch. [0003] For drones, the umancraft designed by the piston engine, the umbrella cover is often connected to the drone with the drone, which is usually used in the latching form. The rear hinge shaft is turned backward after the hinge mechanism is turned backward, and the main problem is to limit the angle of rotation. After the umbr...

AI Technical Summary

Problems solved by technology

The umbrella canopy using the hinge mechanism turns backwards around the hinge axis after opening. The main problem is that the canopy canopy shows a resistance plate effect after being opened due to the limitation of the rotation angle, such as Figure 9 shown

The umbrella canopy with a latch structure is thrown out of the body after opening. The main problem is that the flying canopy may hit the tail of the rear fuselage, causing structural damage, or causing casualties and property losses on the ground during free fall.

[0004] For ground personnel or other objects, the fall of the umbrella canopy may cause personal danger or property damage

For UAVs with a piston engine and push-back layout, the thrown umbrella cover may hit the high-speed rotating propeller or the vertical tail of the UAV, causing damage to the propeller and the body

If the canopy remains on the UAV after it is opened, it may form a drag plate effect, causing the height and speed of the UAV to drop sharply in a short period of time, endangering the safety of aircraft recovery

If the umbrella canopy cannot be opened / thrown or cannot be opened / thrown in time, it will cause the recovery umbrella to fail to inflate and open or not to inflate and open in time, resulting in a crash of the drone

The umbrella canopy connected by hinges has the problem that it is not easy to replace after damage

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