A city air flying car

Abstract

The present invention discloses an urban aerial flying car, comprising a pair of foldable front wings and a pair of tiltable coaxial inverted double rotor systems arranged on the front fuselage and symmetrical with respect to the fuselage, a main coaxial inverted double rotor system arranged on the rear fuselage and a pair of foldable main wings symmetrical with respect to the fuselage; when the car is lifted and flying, the two pairs of foldable wings are parallel to the fuselage, and the double rotor system provides lift; when the car is landing and driving on the ground, the two pairs of foldable wings are folded to be perpendicular to the fuselage, and at the same time, several small wheels on the edges of the foldable wings are extended to support the fuselage to drive on the ground; in the above process, the tiltable coaxial inverted double rotor system provides forward thrust, backward reverse thrust and rolling force. The present invention adopts a scheme of combining three-axis tiltable rotors with high-lift wings, which improves the thrust-to-weight ratio of the power system, and the overall scheme of the flying car has low resistance and fast flight speed. The front and rear wings are designed to be foldable, which can serve as landing gear during landing, thereby improving the structural efficiency.

Description

Technical Field

[0001] The invention relates to the field of vehicles, and in particular to an urban aerial flying car. Background Art

[0002] At present, the development of urban air taxi projects is in the ascendant. Domestic and foreign aviation giants such as Boeing, Airbus and small start-ups have invested a lot of resources in research and development. For example, Boeing's Boeing PAV product has 8 propellers installed on the longitudinal beams of the landing gear on both sides of the aircraft to provide lift for vertical take-off and landing, and 1 propeller is used at the rear of the fuselage to provide forward power for the aircraft. The landing gear beam of this solution does not generate lift during normal flight of the aircraft, and the structural efficiency is low. For example, the CityAirbus product of Airbus in France has 4 fan ducts installed on both sides of the aircraft, and 4 pairs of coaxial reverse propellers are used to provide lift for vertical take-off and landing. The propellers are tilted through a torque converter, and part of the lift is converted into forward power for the aircraft. This solution is similar to a helicopter, with high flight resistance and low flight speed. The Lilium Jet of the German venture capital company Lilium Aviation uses 12 tiltable ducted fans on each of the left and right wings, and 6 tiltable ducted fans on each side of the front fuselage. A total of 36 ducted fans provide lift and forward thrust for vertical take-off and landing of the aircraft. This solution uses a large number of ducted fans, so the power efficiency is low and the thrust-to-weight ratio is small. Germany's Volocopter uses 18 rotors to provide lift and forward power for the aircraft. This solution uses a large number of ducted fans, so the power efficiency is low and the thrust-to-weight ratio is small, and the aircraft resistance is large. Guangzhou Ehang in China uses 4 axes and 8 rotors to provide aircraft lift, and uses a torque converter to tilt the propeller, converting part of the lift into forward power for the aircraft. This solution is similar to a helicopter, with high flight resistance and low flight speed. Summary of the invention

[0003] The purpose of the present invention is to provide an urban air flying car that can improve the thrust-to-weight ratio of the aircraft power system, reduce resistance, increase flight speed and structural efficiency, etc., in response to the problems existing in the above-mentioned prior art.

[0004] The technical solution to achieve the purpose of the present invention is: an urban aerial flying car, comprising a main body, and a pair of front wings and a pair of vertical tails respectively located on the front fuselage and the rear fuselage and symmetrical with respect to the fuselage, and also comprising a pair of foldable front wings and a pair of tiltable coaxial counter-rotating twin-rotor systems arranged on the front fuselage and symmetrical with respect to the fuselage, a main coaxial counter-rotating twin-rotor system arranged on the rear fuselage and a pair of foldable main wings symmetrical with respect to the fuselage;

[0005] When the automobile is lifted and flying, the pair of foldable front wings and the pair of foldable main wings remain parallel to the fuselage, and the pair of tiltable coaxial counter-rotating double-rotor systems cooperate with the main coaxial counter-rotating double-rotor system to provide lift for the main fuselage;

[0006] When the automobile lands and travels on the ground, the pair of foldable front wings and the pair of foldable main wings are folded to be perpendicular to the fuselage, and at the same time, a plurality of small wheels arranged on the edges of the foldable front wings and the foldable main wings are extended to support the fuselage to travel on the ground;

[0007] In the above process, a pair of tiltable coaxial counter-rotating twin-rotor systems provides forward thrust, backward reverse thrust and rolling force for the main body.

[0008] Furthermore, the front wing is a polygonal frame structure, which is used to support the foldable front wing while surrounding the tiltable coaxial counter-rotating twin-rotor system to protect it, and the cross-section of the polygonal frame structure is an airfoil profile.

[0009] Furthermore, the pair of tiltable coaxial counter-rotating twin-rotor systems are respectively arranged at both ends of a rotating shaft located at the lower part of the front fuselage, and the rotating shaft is fixed to the lower part of the front fuselage through two ball bearings symmetrically arranged on the shaft, and a driving gear is arranged on the shaft between the two ball bearings; the rotating shaft is driven to rotate by the drive system.

[0010] Furthermore, the drive system includes a dual-axis motor arranged at the lower part of the front fuselage, and a pair of gears installed on the torque output shafts at both ends of the motor, both of which are engaged with the driving gears; the dual-axis motor drives the rotating shaft to rotate forward / reverse to change the thrust direction of the tiltable coaxial inverted twin-rotor system to forward thrust or backward reverse thrust, and when the car is lifted, the axis of the tiltable coaxial inverted twin-rotor system is upward.

[0011] Furthermore, the main coaxial counter-rotating dual rotor system includes an upper and lower set of coaxial rotor systems with opposite rotation directions, wherein the upper rotor system includes a group of upper rotor blades arranged on the side of the upper rotor main shaft, and the main shaft is driven to rotate by an upper motor fixed to the upper motor support stator; the lower rotor system includes a group of lower rotor blades arranged on the side of the lower rotor main shaft, and the main shaft is driven to rotate by a lower motor fixed to the lower motor support stator; the support stator is fixed on the rear fuselage.

[0012] Furthermore, the folding structure of the foldable front wing and the foldable main wing includes retractable actuators respectively arranged in the fixed wing and the folding wing, and a retractable buffer gas spring arranged between the outer sides of the fixed wing and the folding wing. After the folding wing is folded relative to the fixed wing, the three form a stable triangular structure for support; the folding wing is the foldable front wing or the foldable main wing, and the fixed wing is the front wing or the rear fuselage.

[0013] Furthermore, the vertical tail is provided with a deflectable control surface to provide pitch and yaw control torque for the flight of the car.

[0014] Furthermore, the power of each component of the flying car is provided by a power battery system, which includes a power battery area I arranged on the foldable front wing, a power battery area II on the foldable main wing, a power battery area III at the rear of the main engine, and a power battery area IV on the vertical tail.

[0015] Compared with the prior art, the present invention has the following significant advantages: a scheme combining a three-axis tilting rotor and a high-lift wing is adopted to improve the thrust-to-weight ratio of the flying car power system, and the overall scheme of the flying car has low resistance and high flying speed; the front and rear wings are designed to be foldable, which can serve as landing gear during landing, thereby improving the structural efficiency.

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of a city aerial flying car in a flying state in one embodiment.

[0018] Figure 2 It is a front view of the urban air flying car in the flying state in one embodiment.

[0019] Figure 3 It is a side view of a city air flying car in a flying state in one embodiment.

[0020] Figure 4 It is a side view of an urban aerial flying car in an embodiment when it is landing or driving on the ground.

[0021] Figure 5 Schematic diagram of a tiltable coaxial counter-rotating twin-rotor system in one embodiment.

[0022] Figure 6 It is a schematic diagram of the twin rotors in a main coaxial counter-rotating twin rotor system in one embodiment.

[0023] Figure 7 A partial view of a foldable wing in one embodiment.

[0024] Figure 8 FIG. 1 is a schematic diagram of power battery partitioning in an embodiment. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] In one embodiment, in combination Figures 1 to 4 The present invention provides an urban aerial flying car, comprising a main body 1, and a pair of front wings 2 and a pair of vertical tails 5 respectively located on the front fuselage and the rear fuselage and symmetrical with respect to the fuselage, and also comprising a pair of foldable front wings 3 and a pair of tiltable coaxial counter-rotating double-rotor systems 6 arranged on the front fuselage and symmetrical with respect to the fuselage, a main coaxial counter-rotating double-rotor system 7 arranged on the rear fuselage and a pair of foldable main wings 4 symmetrical with respect to the fuselage;

[0029] When the automobile is lifted and flying, the pair of foldable front wings 3 and the pair of foldable main wings 4 remain parallel to the fuselage, and the pair of tiltable coaxial counter-rotating double-rotor systems 6 cooperate with the main coaxial counter-rotating double-rotor system 7 to provide lift for the main fuselage 1;

[0030] When the car lands and travels on the ground, the pair of foldable front wings 3 and the pair of foldable main wings 4 are folded to be perpendicular to the fuselage, and at the same time, a plurality of small wheels 12 arranged on the edges of the foldable front wings 3 and the foldable main wings 4 are extended to support the fuselage to travel on the ground;

[0031] In the above process, a pair of tiltable coaxial counter-rotating twin-rotor systems 6 provide forward thrust, backward reverse thrust and rolling force for the main body 1. Here, rolling is achieved by providing differential lift through a pair of tiltable coaxial counter-rotating twin-rotor systems 6 on the left and right sides of the lower part of the front fuselage. When the car is driving on the ground, the rolling force is the steering force.

[0032] Here, the main fuselage is designed as a wing-body fusion structure, the fuselage waistline is designed with a smoothly transitioned wing strip 8, and the fuselage cockpit is designed with two to seven seats. The basic version can accommodate two passengers, and the family version can accommodate up to seven passengers.

[0033] Furthermore, in one of the embodiments, the front wing 2 is a polygonal frame structure, which is used to support the foldable front wing 3 while surrounding the tiltable coaxial counter-rotating twin-rotor system 6 to protect it, and the cross-section of the polygonal frame structure is an airfoil profile, which can provide additional lift for the flying car.

[0034] Further, in one embodiment, in combination Figure 5 The pair of tiltable coaxial counter-rotating twin-rotor systems 6 are respectively arranged at the two ends of a rotating shaft 10 located at the lower part of the front fuselage. The rotating shaft 10 is fixed to the lower part of the front fuselage through two ball bearings 33 symmetrically arranged on the shaft, and a driving gear 34 is arranged on the shaft between the two ball bearings 33; the rotating shaft 10 is driven to rotate by the driving system.

[0035] Further, in one embodiment, in combination Figure 5 The driving system includes a dual-axis motor 32 arranged at the lower part of the front fuselage, and a pair of gears 35 installed on the torque output shafts at both ends of the motor, both of which are meshed with the driving gear 34; the dual-axis motor 32 drives the rotating shaft 10 to rotate in the forward / reverse direction to change the thrust direction of the tiltable coaxial inverted twin-rotor system 6 to forward thrust or backward reverse thrust (the rotation of the rotating shaft drives the tiltable coaxial inverted twin-rotor system to rotate forward and backward, the forward direction is toward the direction of the vehicle's forward movement, and the maximum rotation angle is 90°, such as Figure 3 and 4 As shown), when the car is raised, the axis of the tiltable coaxial counter-rotating twin-rotor system 6 is upward, as shown in FIG. Figure 2 After the car is launched, the flying car slowly obtains forward thrust and flight speed by rotating the tiltable coaxial counter-rotating twin-rotor system 6 forward. When the speed V gradually increases, the foldable front wing 3 and the foldable main wing 4 obtain sufficient lift to compensate for the reduction in lift of the flying car caused by the forward tilting of the tiltable coaxial counter-rotating twin-rotor system 6.

[0036] Further, in one embodiment, in combination Figure 6 The main coaxial counter-rotating dual-rotor system 7 includes an upper and a lower set of coaxial rotor systems with opposite rotation directions, wherein the upper rotor system includes a group of upper rotor blades 13 arranged on the side of the upper rotor main shaft 19 (or blade mounting flange), and the main shaft is driven to rotate by an upper motor 15 fixed to an upper motor support stator 17; the lower rotor system includes a group of lower rotor blades 14 arranged on the side of the lower rotor main shaft 20 (or blade mounting flange), and the main shaft is driven to rotate by a lower motor 16 fixed to a lower motor support stator 18; the support stator is fixed to the rear fuselage.

[0037] Here, it is exemplified and preferred that the number of rotor blades in each group is three to six.

[0038] Further, in one embodiment, in combination Figure 7 The folding structure of the foldable front wing 3 and the foldable main wing 4 includes a retractable actuator cylinder respectively arranged in the fixed wing 23 and the folding wing 24, and a retractable buffer gas spring 27 arranged between the outer sides of the fixed wing 23 and the folding wing 24. After the folding wing 24 is folded relative to the fixed wing 23, the three form a stable triangular structure for support; the folding wing 24 is the foldable front wing 3 or the foldable main wing 4, and the fixed wing 23 is the front wing 2 or the rear fuselage.

[0039] Furthermore, in one embodiment, the folding part of the folding wing 24 relative to the fixed wing 23 is hinged, such as Figure 4 The front wing hinge line 21 and the main wing hinge line 22 are shown in FIG.

[0040] Further preferably, in one of the embodiments, the vertical tail 5 is a V-shaped structure.

[0041] The solution of this embodiment can improve the lateral stability of the automobile and enhance the ability to resist side winds.

[0042] Further preferably, in one of the embodiments, a deflectable control surface 11 is provided on the vertical tail 5 to provide pitch and yaw control torque for the flight of the automobile.

[0043] Further, in one embodiment, in combination Figure 8 The power of each component of the flying car is provided by a power battery system, which includes a power battery I zone 28 arranged on the foldable front wing 3 (a power battery is installed in the wing box of the foldable front wing), a power battery II zone 29 on the foldable main wing 4 (a power battery is installed in the wing box of the foldable main wing), a power battery III zone 30 at the rear of the main engine (a power battery is installed at the rear of the cockpit), and a power battery IV zone 31 on the vertical tail 5 (a power battery is installed in the wing box of the vertical tail).

[0044] Preferably, the power battery is a rechargeable lithium-ion battery or a hydrogen fuel cell.

[0045] In summary, the present invention adopts a solution combining a three-axis tilting rotor and a high-lift wing, which improves the thrust-to-weight ratio of the flying car power system, and the overall flying car solution has low resistance and high flight speed. The front and rear wings are designed to be foldable, which can serve as landing gear during landing, thereby improving the structural efficiency. It can provide air transportation solutions for large cities with a population of tens of millions, and alleviate the travel difficulties caused by traffic jams in large cities.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An urban aerial flying car, comprising a main body (1), and a pair of front wings (2) and a pair of vertical tails (5) respectively located on the front fuselage and the rear fuselage and symmetrical with respect to the fuselage, characterized in that: It also includes a pair of foldable front wings (3) and a pair of tiltable coaxial counter-rotating double-rotor systems (6) arranged on the front fuselage and symmetrical with respect to the fuselage, a main coaxial counter-rotating double-rotor system (7) and a pair of foldable main wings (4) arranged on the rear fuselage and symmetrical with respect to the fuselage; When the automobile is lifted and flying, the pair of foldable front wings (3) and the pair of foldable main wings (4) are parallel to the fuselage, and the pair of tiltable coaxial counter-rotating double-rotor systems (6) cooperate with the main coaxial counter-rotating double-rotor system (7) to provide lift for the main fuselage (1); When the automobile lands and travels on the ground, the pair of foldable front wings (3) and the pair of foldable main wings (4) are folded to be perpendicular to the fuselage, and at the same time, a plurality of small wheels (12) arranged on the edges of the foldable front wings (3) and the foldable main wings (4) are extended to support the fuselage to travel on the ground; In the above process, a pair of tiltable coaxial counter-rotating twin-rotor systems (6) provide the main body (1) with forward thrust, backward reverse thrust and rolling force; The pair of tiltable coaxial counter-rotating twin-rotor systems (6) are respectively arranged at two ends of a rotating shaft (10) located at the lower part of the front fuselage, the rotating shaft (10) is fixed to the lower part of the front fuselage through two ball bearings (33) symmetrically arranged on the shaft, and a driving gear (34) is arranged on the shaft between the two ball bearings (33); the rotating shaft (10) is driven to rotate by the driving system; The main coaxial counter-rotating double rotor system (7) comprises an upper and a lower set of coaxial rotor systems with opposite rotation directions, wherein the upper rotor system comprises a group of upper rotor blades (13) arranged on the side of the upper rotor main shaft (19), and the main shaft is driven to rotate by an upper motor (15) fixed to an upper motor support stator (17); the lower rotor system comprises a group of lower rotor blades (14) arranged on the side of the lower rotor main shaft (20), and the main shaft is driven to rotate by a lower motor (16) fixed to a lower motor support stator (18); the support stator is fixed to the rear fuselage.

2. The urban air flying car according to claim 1, characterized in that: The front wing (2) is a polygonal frame structure, which is used to support the foldable front wing (3) and surround the tiltable coaxial counter-rotating twin-rotor system (6) to protect it, and the cross-section of the polygonal frame structure is an airfoil profile.

3. The urban air flying car according to claim 1, characterized in that: The driving system comprises a dual-axis motor (32) arranged at the lower part of the front fuselage, and a pair of gears (35) installed on the torque output shafts at both ends of the motor, both of which are meshed with the driving gear (34); the dual-axis motor (32) drives the rotating shaft (10) to rotate in a forward / reverse rotation to change the thrust direction of the tiltable coaxial counter-rotating twin-rotor system (6) to forward thrust or backward reverse thrust, and when the car is lifted, the axis of the tiltable coaxial counter-rotating twin-rotor system (6) is upward.

4. The urban air flying car according to claim 1, characterized in that: The folding structure of the foldable front wing (3) and the foldable main wing (4) comprises a retractable and retractable actuator cylinder respectively arranged in the fixed wing (23) and the folding wing (24), and a retractable buffer gas spring (27) arranged between the outer sides of the fixed wing (23) and the folding wing (24); after the folding wing (24) is folded relative to the fixed wing (23), the three form a stable triangular structure for support; the folding wing (24) is the foldable front wing (3) or the foldable main wing (4), and the fixed wing (23) is the front wing (2) or the rear fuselage.

5. The urban air flying car according to claim 4, characterized in that: The part for folding the folding wing (24) relative to the fixed wing (23) adopts a hinge.

6. The urban air flying car according to claim 1, characterized in that: The vertical tail (5) is a V-shaped structure; The vertical tail (5) is provided with a deflectable control surface (11) to provide a pitch and yaw control torque for the flight of the automobile.

7. The urban air flying car according to claim 1 or 6, characterized in that: The power of each component of the flying car is provided by a power battery system, which includes a power battery area I (28) arranged on the foldable front wing (3), a power battery area II (29) on the foldable main wing (4), a power battery area III (30) at the rear of the main engine, and a power battery area IV (31) on the vertical tail (5).

8. The urban air flying car according to claim 7, characterized in that: The power battery is a rechargeable lithium-ion battery or a hydrogen fuel cell.

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