Safety device for varying propeller of flying vehicle to helicopter rotor

Abstract

To provide a safety device which achieves safety of a flying vehicle, and varies a propeller provided at the center of the flying vehicle to a helicopter rotor.SOLUTION: There is provided a safety device for varying propellers of a flying vehicle, which has right and left rotors provided with inside rotor blades 10 and 11 and outside rotor blades 1 and 8, function as the propellers in a normal operation state, as needed, allows the outside rotor blades 1 and 8 to be synchronously emitted and developed by centrifugal force, to helicopter rotors, and safely landing on the ground by helicopter function normal operation or automatic rotation.SELECTED DRAWING: Figure 2

Description

Detailed description of the invention Industrial application field

[0001] This invention relates to a safety device for use in the event that the battery of an eVTOL flying vehicle runs out or the blade is damaged. [Background technology]

[0002] Currently, various flying cars have been created, but in an emergency some of the propellers may not be able to rotate, or the battery capacity may be reduced, making it impossible to fly. Some flying cars are equipped with parachutes, but these are still not considered safe, and development is proceeding under the assumption that breakdowns will never occur, which is very worrying. Problems that the invention aims to solve

[0003] The present invention aims to solve this problem and to land the aircraft safely on the ground in an emergency.

[0004] As a result, it was found that the flying car can land safely on the ground by providing a safety device in the center of the flying car that changes the propeller of the flying car to a helicopter.

[0005] Next, the structure and operation of the present invention will be described with reference to examples. Structure of the present invention This invention is described as a flying car equipped with helicopter functions and powered by electricity. In addition, an emergency auxiliary power source must be provided. In the figure, the internal structures of the left and right inner rotor blades 10, 11 of the helicopter are the same on the left and right, so only the left rotor is shown in the figure. [1] To convert it into a helicopter, outer rotor blades 1 and 8 are attached to inner rotor blades 10 and 11, and in an emergency, the outer rotor blades 1 and 8 are ejected and deployed. The present invention is designed to land safely by autorotation, but if it is possible to carry it on board, it is possible to operate the helicopter using a spare battery or other power source. [2] In an emergency, the electromagnetic servo 2 (electromagnetic servo 2 is attached to the base of the inner rotor blades 10, 11) is activated by the backup power source, and the centrifugal force of the outer rotor blades 1, 8 is applied to the synchronous cylinder 16, which causes the cylinder key 21 to apply a force to rotate the synchronous shaft 17 counterclockwise as seen from the left outside in the figure, causing the outer rotor blades 1, 8 to be ejected and deployed. This will allow the helicopter to move into autorotation or normal helicopter flight. The mechanism for synchronizing deployment is intended to prevent delays in deployment on one side due to some reason. [3] Since the synchronous shaft 17 passes through the mast 23, the hub system of the inner rotor blades 10, 11 is a semi-articulated seesaw type in which the rotor rotates on the seesaw shaft 26, as shown in Figures 3 and 4. [4] The size of the intake port 15 is to adjust the negative pressure during injection and to prevent the collision of the synchronous cylinder-bulge 20. EXAMPLES

[0006] In the propeller mode of this invention, a moderate angle of attack is given and part of the lift is generated, but reverse stress and excessive lift on one side are offset by the helicopter function or handled by the gyro function. When the rotor blades are ejected and deployed, the aircraft's optimum autorotation speed must be approached, but if the speed is insufficient at that time, the rotation speed will be increased using a spare battery or autorotation operation will be initiated. Or, if you are flying in helicopter mode, try to get it close to 600 rpm. Autorotation is performed by the pilot, but AI can also find a safe open space and perform automatic autorotation.

[0007] As a safety device, it is possible to operate a helicopter from the beginning, but it is not suitable for a flying car. With this invention, the propeller provides part of the lift and in an emergency the blades can be ejected and deployed to safely land on the ground. [Brief description of the drawings] Because the helicopter is long, the enlarged image shows only the left rotor. [Figure 1]Overall view of the propeller mode with the rotors not deployed [Diagram 2] Helicopter drone at maximum deployment [Diagram 3] The rotor blade in propeller mode is shown in a horizontal central section with an angle of attack of ±0, with the right side omitted as a broken section, in an enlarged view. [Figure 4] The rotor blade in propeller mode is shown in an enlarged front view with the right side cut away. [Diagram 5] The horizontal central cross section of the left inner and outer rotor blades in the fully deployed helicopter mode is shown in an enlarged view. [Figure 6] Explaining the operation of synchronous shafts and synchronous cylinders (part of the synchronous cylinder is omitted) [Figure 7] As an example, a safety device that changes the propeller of a flying car into a helicopter is attached to a quadcopter and shown at maximum deployment. [Figure 8] The position of the cylinder key is shown in an enlarged cross section perpendicular to the rotor shaft, but the scale is not the same as above. [Explanation of symbols] 1. Left outer rotor blade 2. Electromagnetic servo 3. Rotor hub 4. Hub bolt 5 Collective lever 6 Collective lever sleeve 7. Rotor head 8. Right outer rotor blade 9. Outer blade fixing hole 10. Left inner rotor blade 11, right inner rotor blade 12, synchronous cylinder fixing nut 13, outer rotor tip cap 14, inner rotor tip cap Chapp 15, air intake 16, synchronous cylinder - 17, synchronous shaft 18, Inner rotor blade reinforcement 19, Bulge key guide 20, synchronous cylinder bulge 21, cylinder key 22, hub bearing 23, mast 24, Mast hole 25, Bracket 26, seesaw shaft 27, outer rotor blade reinforcement

Claims

[Claim 1] Outer rotor blades 1, 8 are provided on the left and right inner rotor blades 10, 11, and function as propellers in normal operation, but in an emergency, an electromagnetic servo 2 fixing the outer rotor blades 1, 8 is activated to allow them to move freely. The centrifugal force applied to the outer rotor blades 1, 8 is applied to the synchronous cylinder 16 connected thereto, and the cylinder key 21 faces outward in the spiral grooves in the opposite directions provided on the outer circumference of the synchronous shaft 17 in the inner rotor blades 10, 11, so that the shaft rotates and the outer rotor blades 1, 8 are synchronously ejected and deployed by the centrifugal force. This is a safety device that changes the propeller of a flying car into a helicopter rotor.

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