Curved pipe engine, curved pipe engine aircraft and control method of curved pipe engine aircraft

Abstract

The invention relates to the field of engines and aircrafts, in particular to a curved tube engine, a curved tube engine aircraft and a control method thereof.The curved tube engine comprises a curved tube and a high-speed fluid generator, the high-speed fluid generator sprays high-speed fluid into the curved tube, and the high-speed fluid acts on the convex face of the inner wall of the curved tube to generate a low-pressure area; the high-speed fluid acts with the concave surface of the inner wall of the curved tube to generate a high-pressure area, and the curved tube engine is subjected to a pushing force F pointing to the concave surface of the inner wall from the convex surface of the inner wall of the curved tube under the action of pressure difference, so that the curved tube engine aircraft is pushed to complete maneuvers such as vertical take-off and landing, hovering and level flight. The engine is large in power load, high in thrust-weight ratio, simple, durable, safe, efficient and convenient to use and maintain, the maximum takeoff weight can exceed that of a large fixed-wing passenger plane with the same power, the engine has the advantages of being large in load, high in speed, long in voyage, high in lift limit, low in noise, convenient to operate and the like, and therefore the problems that an existing engine and an existing aircraft are low in efficiency and not high in safety are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of engines and aircraft, and in particular to a curved pipe engine, a curved pipe engine aircraft and a control method thereof. Background Art

[0002] Traditional turboprop, turbofan, turbojet, rocket engine and other engines are inefficient, complex, expensive, and difficult to use and maintain, which means they must be combined with long wings to achieve better aviation flight.

[0003] Existing aircraft have limited lift-to-drag ratios and require long wings and lift-enhancing devices to generate sufficient lift. As a result, existing aircraft have a large appearance, are greatly affected by airflow, have low safety, small power load, low efficiency, are complex and expensive, and difficult to use and maintain.

[0004] Existing spacecraft rely on rocket engines to push directly, which is less efficient. The low-Earth orbit carrying factor is only a few percent, and can only send a payload equivalent to about 3% of its own weight to low-Earth orbit. The carrying factor for deep space exploration is even lower. In addition, existing rocket engines rely on high-speed gas ejection to obtain reverse thrust, and need to interact with external materials to obtain thrust, which also brings serious restrictions to space activities. Summary of the invention

[0005] The purpose of the present invention is to provide a curved tube engine and a curved tube engine aircraft and a control method thereof, aiming to solve the problems of low efficiency and poor safety of existing engines and aircraft.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present invention provides a curved pipe engine, comprising a curved pipe and a high-speed fluid generator, wherein the curved pipe is a semi-sealed hollow pipe with a curvature on the inner wall along the fluid flow direction and only open at two ends, one end of the curved pipe is a curved pipe inlet and the other end is a curved pipe outlet, the high-speed fluid generator is a device that can output high-speed fluid, and the high-speed fluid generator is installed at the curved pipe inlet, and a protrusion or a deceleration and boosting tooth is arranged on the concave surface of the inner wall of the curved pipe, and the protrusion or the deceleration and boosting tooth is used to block the high-speed fluid close to the concave surface of the inner wall to achieve deceleration and boosting, and the protrusion and the deceleration and boosting tooth are arranged in one or more rows along the fluid flow direction; the high-speed fluid and the convex surface of the inner wall of the curved pipe interact to generate a low-pressure area, and the high-speed fluid and the concave surface of the inner wall of the curved pipe interact to generate a high-pressure area, and the curved pipe engine is subjected to a driving force F directed from the convex surface of the inner wall of the curved pipe to the concave surface of the inner wall under the action of the pressure difference.

[0007] Wherein, the deceleration and boosting tooth is a barbed tooth, and the angle θ between the deceleration and boosting tooth and the tangent of the connection point on the concave surface of the inner wall of the curved pipe is 0°-90°.

[0008] Wherein, the generatrix of the inner wall convex surface and the inner wall concave surface of the curved pipe along the fluid flow direction is a curve with a curvature greater than zero.

[0009] Among them, the curved pipe engine composed of one curved pipe and one high-speed fluid generator is a single curved pipe engine, and the curved pipe engine composed of at least one high-speed fluid generator and at least two curved pipes is a multi-curved pipe engine; the curved pipes of the multi-curved pipe engine are arranged in series, in parallel, or in series and parallel, or in any one or a combination thereof. The curved pipes arranged in series are called a series multi-curved pipe engine, the curved pipes arranged in parallel are called a parallel multi-curved pipe engine, and the curved pipes arranged in series and parallel are called a series-parallel multi-curved pipe engine.

[0010] The outlet of the single curved tube engine and the inlet of the high-speed fluid generator are sealed and connected by a conduit to form a circulating single curved tube engine, and the outlet of the multi-curved tube engine and the inlet of the high-speed fluid generator are sealed and connected by a conduit to form a circulating multi-curved tube engine.

[0011] The inlet and outlet at both ends of some curved pipes of the multi-curved pipe engine are directly connected by a bypass conduit to form a bypass multi-curved pipe engine. A valve is provided on the bypass conduit. When the valve is closed, all fluids flow through the corresponding curved pipes. When the valve is gradually opened, part of the fluid flows through the bypass conduit, and the fluid flowing through the corresponding curved pipes gradually decreases.

[0012] In a second aspect, a bent tube engine aircraft adopts the bent tube engine described in the first aspect, comprising a fuselage, a bent tube engine, and a control system, wherein the bent tube engine is mounted on the fuselage, and the control system is mounted on one side of the fuselage;

[0013] When the bent pipe engine installed in the aircraft is a non-circulating bent pipe engine, the bent pipe engine aircraft further comprises a flow guide device, and the flow guide device is installed at the bent pipe outlet of the bent pipe engine.

[0014] In the third aspect, a curved pipe engine control method is used for the curved pipe engine described in the first aspect, including a single curved pipe engine, a multi-curved pipe engine control method, a bypass multi-curved pipe engine control method, a circulating single curved pipe engine control method and a circulating multi-curved pipe engine control method; the single curved pipe engine and multi-curved pipe engine control methods are used to control the magnitude and direction of the thrust F of the single curved pipe engine and the multi-curved pipe engine, the bypass multi-curved pipe engine control method is used to control the magnitude and direction of the thrust F of the bypass multi-curved pipe engine; the circulating single curved pipe engine control method is used to control the magnitude and direction of the thrust F of the circulating single curved pipe engine; the circulating multi-curved pipe engine control method is used to control the magnitude and direction of the thrust F of the circulating multi-curved pipe engine.

[0015] In a fourth aspect, a method for controlling a curved pipe engine aircraft is provided for the curved pipe engine aircraft according to the second aspect, comprising:

[0016] Controlling the thrust of the curved tube engine to be adjusted to balance with the gravity of the aircraft, so that the aircraft is hovering;

[0017] Controlling the thrust of the curved tube engine to be vertically upward; if the thrust is greater than the gravity of the aircraft, the aircraft will rise vertically; if the thrust is less than the gravity of the aircraft, the aircraft will fall vertically;

[0018] Control the propulsion force of the curved tube engine to be forward and upward, and the component force in the vertical direction is balanced with the gravity of the aircraft, so that the aircraft moves forward;

[0019] The propulsion force of the curved tube engine is controlled to be backward and upward, and the component force in the vertical direction is balanced with the gravity of the aircraft, so that the aircraft moves backward;

[0020] The component of the thrust of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft. If the component of the thrust of the curved tube engine in the horizontal direction is directed to any direction, the aircraft will move laterally to any direction.

[0021] The curved tube engine of the present invention comprises a curved tube and a high-speed fluid generator. The high-speed fluid generator sprays a high-speed fluid into the curved tube. The high-speed fluid and the convex surface of the inner wall of the curved tube interact to generate a low-pressure area, and the high-speed fluid and the concave surface of the inner wall of the curved tube interact to generate a high-pressure area. Under the action of the pressure difference, the curved tube engine is subjected to a driving force F directed from the convex surface of the inner wall of the curved tube to the concave surface of the inner wall, thereby driving the curved tube engine aircraft to complete vertical take-off and landing, hovering, level flight and other maneuvers. The curved tube engine has a large power load, a high thrust-to-weight ratio, is simple and durable, safe and efficient, and is easy to use and maintain. The maximum take-off weight can exceed that of a large fixed-wing passenger aircraft with the same power. The engine has the advantages of large load capacity, high speed, long range, high ceiling, low noise, and easy operation, thereby solving the problem of low efficiency and safety of existing engines and aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 Schematic diagram of the curved pipe engine provided by the present invention.

[0024] Figure 2 It is a cross-sectional schematic diagram of the curved pipe engine provided by the present invention.

[0025] Figure 3 It is a cross-sectional schematic diagram of the curved pipe engine of the present invention with the deceleration and supercharging gears greatly lowered.

[0026] Figure 4 This is a cross-sectional schematic diagram of a single curved pipe engine of the present invention.

[0027] Figure 5 It is a cross-sectional schematic diagram of a circulating single curved pipe engine of the present invention.

[0028] Figure 6 It is a cross-sectional schematic diagram of a series-connected multi-curved pipe engine according to the present invention.

[0029] Figure 7 It is a schematic diagram of a parallel multi-bend pipe engine of the present invention.

[0030] Figure 8 It is a cross-sectional schematic diagram of a bypass multi-curved pipe engine of the present invention.

[0031] Fig. 9 It is a cross-sectional schematic diagram of a circulating multi-bent pipe engine of the present invention.

[0032] Fig.10 The present invention is a schematic diagram of a curved tube engine aircraft.

[0033] Fig.11 It is a cross-sectional schematic diagram of a circulating curved tube engine aircraft of the present invention.

[0034] In the figure: 101- curved pipe, 102- high-speed fluid generator, 103- curved pipe outlet, 104- curved pipe inlet, 105- deceleration and boosting teeth, 106- busbar, 107- inner wall convex surface, 108- inner wall concave surface;

[0035] 201-fuselage, 202-control system, 203-flow guide device. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] See also Figures 1 to 9In a first aspect, the present invention provides a curved pipe engine, comprising a curved pipe 101 and a high-speed fluid generator 102. The curved pipe 101 is a semi-sealed hollow pipe with a curvature of the inner wall along the fluid flow direction and only openings at both ends. One end of the curved pipe 101 is a curved pipe inlet 104 and the other end is a curved pipe outlet 103. The high-speed fluid generator 102 is a device capable of outputting high-speed fluid. The high-speed fluid generator 102 is installed at the curved pipe inlet 104 of the curved pipe 101. The inner wall concave surface 108 of the curved pipe 101 is A protrusion or deceleration and boosting tooth 105 is arranged on it, and the protrusion or deceleration and boosting tooth 105 is used to block the high-speed fluid close to the inner wall concave surface 108 to achieve deceleration and boosting. The protrusion and the deceleration and boosting tooth are arranged in one or more rows along the fluid flow direction; the high-speed fluid and the inner wall convex surface 107 of the curved tube 101 interact to produce a low-pressure area, and the high-speed fluid and the inner wall concave surface 108 of the curved tube 101 interact to produce a high-pressure area. Under the action of the pressure difference, the curved tube engine is subjected to a driving force F directed from the inner wall convex surface 107 of the curved tube 101 to the inner wall concave surface 108.

[0038] In this embodiment, the high-speed fluid generator 102 is a device that can output high-speed fluid, including any one or a combination of various powered fans, ducted fans, blowers, propeller fans, air pumps, water pumps, turbines, turboprops, combustion chambers, detonation chambers, particle accelerators, boilers, high-pressure gas cylinders, and high-speed compressed air ports; the fluid is any one or a combination of gas, liquid, and particle flow. The greater the fluid density and the faster the flow rate in the curved tube engine, the greater the driving force F it generates, and vice versa.

[0039] The high-speed fluid generator 102 sprays high-speed fluid into the curved tube 101. The high-speed fluid reacts with the convex surface 107 of the inner wall of the curved tube 101 to generate a low-pressure area, and the high-speed fluid reacts with the concave surface 108 of the inner wall of the curved tube 101 to generate a high-pressure area. The pressure difference generates force to push the curved tube engine aircraft to complete vertical take-off and landing, hovering, level flight and other maneuvers. It has large power load, high thrust-to-weight ratio, simplicity and durability, safety and efficiency, easy use and maintenance, and a maximum take-off weight that can exceed that of large fixed-wing passenger aircraft with the same power. It has the advantages of large load capacity, high speed, long range, high ceiling, low noise, and easy operation, thereby solving the problem of low efficiency of existing engines.

[0040] In this embodiment, the inner wall concave surface 108 of the curved tube 101 is provided with protrusions or deceleration and boosting teeth 105, and the protrusions or deceleration and boosting teeth 105 are arranged in one or more rows along the flow direction of the fluid. The protrusions or deceleration and boosting teeth 105 block the high-speed fluid near the inner wall concave surface 108 from deceleration and boosting, and generate a higher high-pressure area on the inner wall concave surface 108 of the curved tube 101, thereby enabling the curved tube engine to generate a greater thrust F. The connection between the deceleration and boosting teeth 105 and the inner wall concave surface 108 of the curved tube 101 is any one or a combination of a fixed connection and a movable connection; when the deceleration and boosting teeth 105 are movably connected to the inner wall concave surface 108 of the curved tube 101, the deceleration and boosting teeth 105 are gradually lowered to increase the pressure on the inner wall concave surface 108 of the curved tube 101, and the deceleration and boosting teeth 105 are gradually retracted to reduce the pressure on the inner wall concave surface 108 of the curved tube 101;

[0041] The deceleration and boosting teeth 105 are barbed teeth, and the angle between the deceleration and boosting teeth 105 and the tangent of the connection point on the inner wall concave surface 108 of the curved pipe 101 is 0°-90°.

[0042] Furthermore, the generatrix 106 of the inner wall convex surface 107 and the inner wall concave surface 108 of the curved pipe 101 along the fluid flow direction is a curve with a curvature greater than zero.

[0043] In this embodiment, the generatrix 106 of the inner wall convex surface 107 of the curved pipe 101 along the fluid flow direction is a curve with a curvature greater than zero, and the curve is any one or a combination of a parabola, a circular arc, an elliptical arc, a hyperbola, and a curve with positive curvature. The generatrix 106 of the inner wall concave surface 108 of the curved pipe 101 is substantially the same as the generatrix 106 of the inner wall convex surface 107; the cross-section of the curved pipe 101 is any one or a combination of a rectangle, an ellipse, a square, a polygon, and a circle.

[0044] Further, a curved pipe engine consisting of one curved pipe 101 and one high-speed fluid generator 102 is a single curved pipe engine, and a curved pipe engine consisting of at least one high-speed fluid generator 102 and at least two curved pipes 101 is a multi-curved pipe engine; the curved pipes 101 of the multi-curved pipe engine are arranged in series, in parallel, in series and in parallel, or in any combination thereof, and the curved pipes 101 arranged in series are called a series multi-curved pipe engine (see Figure 6 ), the curved pipes 101 are arranged in parallel, which is called a parallel multi-curved pipe engine (see Figure 7 ), the curved pipes 101 are arranged in series and parallel, which is called a series-parallel multi-curved pipe engine.

[0045] Furthermore, the outlet of the single curved tube engine is sealed and connected with the inlet of the high-speed fluid generator 102 by a conduit to form a circulating single curved tube engine, and the outlet of the multi-curved tube engine is sealed and connected with the inlet of the high-speed fluid generator 102 by a conduit to form a circulating multi-curved tube engine.

[0046] Furthermore, the inlet and outlet at both ends of some curved pipes of the multi-curved pipe engine are directly connected by a bypass duct to form a bypass multi-curved pipe engine. A valve is provided on the bypass duct. When the valve is closed, all fluids flow through the corresponding curved pipes; when the valve is gradually opened, part of the fluid flows through the bypass duct, and the fluid flowing through the corresponding curved pipes gradually decreases.

[0047] In this embodiment, a curved pipe engine composed of a curved pipe 101 and a high-speed fluid generator 102 is called a single curved pipe engine, and a curved pipe engine composed of at least one single curved pipe engine and any number of curved pipes 101 is called a multi-curved pipe engine; the curved pipe outlet 103 of the single curved pipe engine is connected to the curved pipe inlet 104 of the high-speed fluid generator 102 by a conduit seal to form a circulating single curved pipe engine, and the high-speed fluid is sprayed into the curved pipe 101 from the high-speed fluid generator 102, and after the inner wall convex surface 107 and the inner wall concave surface 108 of the curved pipe 101 respectively generate a low-pressure area and a high-pressure area, it flows out from the curved pipe outlet 103 of the curved pipe 101, and then flows into the high-speed fluid generator 102 through the connecting conduit, is accelerated again, and then is sprayed into the curved pipe 101, so that the fluid is reversed in the circulating single curved pipe engine. The multiple circulation flow can achieve continuous driving force F without material interaction with the outside world, while improving energy utilization and thrust-to-weight ratio; the curved tube outlet 103 of the multiple curved tube engine is connected to the inlet of the high-speed fluid generator by a conduit seal to form a circulating multiple curved tube engine, the fluid is sprayed into the curved tube 101 from the high-speed fluid generator 102, and flows out from the curved tube outlet 103 of the curved tube 101 after the convex surface 107 and the concave surface 108 of the inner wall of the curved tube 101 respectively generate low-pressure area and high-pressure area, and then flows into the high-speed fluid generator 102 through the connecting pipe, and is accelerated again before being sprayed into the curved tube 101, so that the fluid keeps circulating repeatedly in the curved tube engine, achieving continuous driving force F without material interaction with the outside world, while improving energy utilization and thrust-to-weight ratio. The curved pipe inlet 104 and the curved pipe outlet 103 at both ends of some curved pipes 101 of the multi-curved pipe engine are directly connected by a bypass duct to form a bypass multi-curved pipe engine. A valve is provided on the bypass duct. When the valve is closed, all fluids flow through the corresponding curved pipe 101; when the valve is gradually opened, part of the fluid flows through the bypass duct, the fluid flowing through the corresponding curved pipe 101 gradually decreases, the speed gradually decreases, and the pressure difference generated by the corresponding curved pipe 101 gradually decreases. By controlling the opening and closing of the valve to control the change of the driving force F of some corresponding curved pipes 101 in the multi-curved pipe engine, the size and direction of the driving force F of the entire curved pipe engine are changed, and the required size and direction of the driving force F are obtained.

[0048] See also Figure 10 to Figure 11In a second aspect, a curved tube engine aircraft adopts the curved tube engine described in the first aspect, comprising a fuselage 201, the curved tube engine, and a control system, wherein the curved tube engine is mounted on the fuselage 201, and the control system is mounted on one side of the fuselage 201;

[0049] When the bent pipe engine installed in the aircraft is a non-circulating bent pipe engine, the bent pipe engine aircraft further includes a flow guide device, and the flow guide device is installed at the bent pipe outlet 103 of the bent pipe engine.

[0050] In this embodiment, the fuselage 201 can be any one of the shapes of a water drop, a flying saucer, a streamline, or a waverider, or a combination of several shapes, and the curved pipe engine and the fuselage 201 are deeply integrated into one to form an integrated curved pipe engine aircraft. The high-speed fluid at the curved pipe outlet 103 of the curved pipe engine is guided to any direction or a combination of directions of upward, rearward, downward, leftward, or rightward by the flow guide device according to the control system, so as to change the magnitude and direction of the force on the aircraft, thereby realizing the predetermined aircraft maneuver or action.

[0051] In the third aspect, a curved pipe engine control method is used for the curved pipe engine described in the first aspect, including a single curved pipe engine control method, a multi-curved pipe engine control method, a bypass multi-curved pipe engine control method, a circulating single curved pipe engine control method and a circulating multi-curved pipe engine control method; the single curved pipe engine and multi-curved pipe engine control methods are used to control the magnitude and direction of the thrust F of the single curved pipe engine and the multi-curved pipe engine, the bypass multi-curved pipe engine control method is used to control the magnitude and direction of the thrust F of the bypass multi-curved pipe engine; the circulating single curved pipe engine control method is used to control the magnitude and direction of the thrust F of the circulating single curved pipe engine; the circulating multi-curved pipe engine control method is used to control the magnitude and direction of the thrust F of the circulating multi-curved pipe engine.

[0052] In this embodiment, the control method of the single curved pipe engine and the multi-curved pipe engine includes:

[0053] The magnitude and direction of the driving force F are controlled. When the throttle is increased, the speed and flow rate of the fluid sprayed toward the curved pipe 101 by the high-speed fluid generator 102 increase, and the driving force F of the curved pipe engine increases. When the throttle is reduced, the speed and flow rate of the fluid sprayed toward the curved pipe 101 by the high-speed fluid generator 102 decrease, and the driving force F of the curved pipe engine decreases. The lowering amount of the deceleration and boosting teeth 105 at different positions on the concave surface 108 of the inner wall of the curved pipe 101 is controlled to form different pressure differences at corresponding positions of the curved pipe 101 to change the direction and magnitude of the driving force F of the curved pipe engine, thereby achieving the specified magnitude and direction of the driving force F. The flow guide device at the curved pipe outlet 103 of the curved pipe engine is controlled to guide the sprayed high-speed fluid to any direction to obtain a reaction force, thereby changing the direction and magnitude of the driving force F of the curved pipe engine, thereby achieving the specified maneuver or action.

[0054] The bypass multi-bend pipe engine control method comprises:

[0055] The magnitude and direction of the driving force F are controlled. When the throttle is increased, the speed and flow rate of the fluid sprayed to the curved pipe 101 by the high-speed fluid generator 102 increase, and the driving force F of the curved pipe engine increases. When the throttle is decreased, the speed and flow rate of the fluid sprayed to the curved pipe 101 by the high-speed fluid generator 102 decrease, and the driving force F of the curved pipe engine decreases. The flow guide device at the curved pipe outlet 103 of the curved pipe engine is controlled to guide the sprayed high-speed fluid to any direction to obtain a reaction force, so as to change the direction and magnitude of the driving force F of the curved pipe engine, thereby achieving a specified maneuver or action. When the valve on the bypass duct is opened, a part of the fluid of the corresponding curved pipe 101 is diverted, so that the speed and flow rate of the fluid flowing through the corresponding curved pipe 101 are reduced, and the driving force F is reduced, while the driving force F of the remaining curved pipes 101 remains unchanged. When the valve is closed, the driving force F of the corresponding curved pipe 101 is restored. The opening and closing of the valve on the bypass duct is controlled to control the direction and magnitude of the driving force F of the bypass multi-curved pipe engine, thereby achieving a specified maneuver or action.

[0056] The circulating single curved pipe engine control method comprises:

[0057] Control of the magnitude of the driving force F: by increasing the throttle, the speed and flow rate of the fluid sprayed from the high-speed fluid generator 102 to the curved pipe 101 increase, and the driving force F of the curved pipe engine increases; by decreasing the throttle, the speed and flow rate of the fluid sprayed from the high-speed fluid generator 102 to the curved pipe 101 decrease, and the driving force F of the curved pipe engine decreases; by controlling the lowering amount of the deceleration and boosting teeth 105 at different positions on the concave surface 108 of the inner wall of the curved pipe 101, different pressure differences are formed at corresponding positions of the curved pipe 101, so as to change the direction and magnitude of the driving force F of the circulating single curved pipe engine, and thus realize the specified maneuver or action;

[0058] The circulating multi-bend pipe engine control method comprises:

[0059] The magnitude and direction of the driving force F are controlled. When the throttle is increased, the speed and flow rate of the fluid sprayed to the curved pipe 101 by the high-speed fluid generator 102 increases, and the driving force F of all the curved pipes 101 of the circulating multi-curved pipe engine increases. When the throttle is reduced, the speed and flow rate of the fluid sprayed to the curved pipe 101 by the high-speed fluid generator 102 decreases, and the driving force F of all the curved pipes 101 of the circulating curved pipe engine decreases. The lowering amount of the deceleration and boosting teeth 105 at different positions on the inner wall concave surface 108 of the curved pipe 101 is controlled to form different pressure differences at the corresponding positions of the curved pipe 101 to change the circulation. The direction and size of the driving force F of the bypass multi-curved pipe engine can be controlled to achieve the specified maneuver or action; when a bypass duct is installed, the valve on the bypass duct is opened, and a part of the fluid in the corresponding curved pipe 101 is diverted, so that the speed and flow rate of the fluid flowing through the corresponding curved pipe 101 are reduced, the driving force F is reduced, and the driving force F of the other curved pipes 101 remains unchanged. When the valve is closed, the driving force F of the corresponding curved pipe 101 is restored, and the opening and closing of the valve on the bypass duct is controlled to control the direction and size of the driving force F of the bypass circulation multi-curved pipe engine, thereby achieving the specified maneuver or action.

[0060] In a fourth aspect, a method for controlling a curved pipe engine aircraft is provided for the curved pipe engine aircraft according to the second aspect, comprising:

[0061] Controlling the thrust of the curved tube engine to be adjusted to balance with the gravity of the aircraft, so that the aircraft is hovering;

[0062] Specifically, the thrust F of the curved tube engine is controlled to balance the gravity of the aircraft so that the aircraft can hover.

[0063] Controlling the thrust of the curved tube engine to be vertically upward; if the thrust is greater than the gravity of the aircraft, the aircraft will rise vertically; if the thrust is less than the gravity of the aircraft, the aircraft will fall vertically;

[0064] Specifically, the thrust F of the curved tube engine is controlled to be greater than the gravity of the aircraft so that the aircraft can rise vertically; and the thrust F of the curved tube engine is controlled to be less than the gravity of the aircraft so that the aircraft can descend vertically.

[0065] Control the propulsion force of the curved tube engine to be forward and upward, and the component force in the vertical direction is balanced with the gravity of the aircraft, so that the aircraft moves forward;

[0066] Specifically, the component of the thrust F of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft, and the component of the thrust F of the curved tube engine in the horizontal direction is directed forward, so as to realize the forward movement of the aircraft; the component of the thrust F of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft, and the component of the thrust F of the curved tube engine in the horizontal direction is directed backward, so as to realize the backward movement of the aircraft.

[0067] The component of the thrust of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft. If the component of the thrust of the curved tube engine in the horizontal direction is directed to any direction, the aircraft will move laterally to any direction.

[0068] Specifically, the component of the thrust F of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft, and the component of the thrust F of the curved tube engine in the horizontal direction is directed to any direction, so as to realize the lateral movement of the aircraft in any direction.

[0069] There are different control methods depending on the type, size, quantity and location of the installed curved tube engine, but the core control principle is to control the size and direction of the curved tube engine thrust F to meet the aircraft's needs for lift and thrust, and to achieve balance and excitation of the aircraft in the six degrees of freedom.

[0070] The curved tube engine, curved tube engine aircraft and control method thereof provided by the present invention have the following beneficial effects:

[0071] 1. The curved tube engine and the curved tube engine aircraft have a large power load, a high thrust-to-weight ratio, are simple and durable, safe and efficient, and are easy to use and maintain. The maximum take-off weight can exceed that of a large fixed-wing passenger aircraft with the same power. It has the advantages of large load capacity, high speed, long range, high ceiling, low noise, and easy operation.

[0072] Second, the curved tube engine aircraft can also hover in the air and take off and land vertically. It has no special requirements for the take-off and landing site and can take off and land on a flat ground without the need to build a dedicated large airport.

[0073] 3. This curved tube engine aircraft redefines the flow field within the curved tube engine, making the entire aircraft minimally affected by the ambient airflow, aircraft speed and attitude. It has strong self-control and can fly stably under complex airflow conditions at low altitudes. The transition between vertical takeoff and landing and level flight is smooth. It can achieve flight in the entire range from low altitude to high altitude and even space, and can achieve flight in the entire speed range from high speed to low speed and even hovering.

[0074] Fourth, this curved tube engine aircraft can obtain the advantage of efficient thrust without material interaction with the outside world, making it more convenient, safer, more environmentally friendly, faster and less energy-consuming to enter space, opening up a true era of aerospace navigation.

[0075] What is disclosed above is only the preferred embodiment of the curved tube engine, the curved tube engine aircraft and the control method thereof of the present invention. Of course, it cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of the present invention are still within the scope of the invention.

Claims

1. A curved pipe engine, characterized in that: The invention comprises a curved pipe and a high-speed fluid generator. The curved pipe is a semi-sealed hollow pipe with a curvature on the inner wall along the fluid flow direction and only openings at two ends. One end of the curved pipe is a curved pipe inlet and the other end is a curved pipe outlet. The high-speed fluid generator is a device capable of outputting high-speed fluid. The high-speed fluid generator is installed at the curved pipe inlet. The concave surface of the inner wall of the curved pipe is provided with protrusions or deceleration and boosting teeth. The protrusions or the deceleration and boosting teeth are used to block the high-speed fluid close to the concave surface of the inner wall to achieve deceleration and boosting. The protrusions and the deceleration and boosting teeth are arranged in one or more rows along the fluid flow direction. The high-speed fluid and the convex surface of the inner wall of the curved pipe act to generate a low-pressure area, and the high-speed fluid and the concave surface of the inner wall of the curved pipe act to generate a high-pressure area. Under the action of the pressure difference, the curved pipe engine is subjected to a driving force F directed from the convex surface of the inner wall of the curved pipe to the concave surface of the inner wall.

2. The bent pipe engine according to claim 1, characterized in that: The deceleration and boosting teeth are barbed teeth, and the angle θ between the deceleration and boosting teeth and the tangent line of the connection point on the concave surface of the inner wall of the curved pipe is 0° to 90°.

3. The bent pipe engine according to claim 1, characterized in that: The generatrix of the inner wall convex surface and the inner wall concave surface of the curved pipe along the fluid flow direction is a curve with a curvature greater than zero.

4. The bent pipe engine according to claim 1, characterized in that: A curved pipe engine consisting of one curved pipe and one high-speed fluid generator is a single curved pipe engine, and a curved pipe engine consisting of at least one high-speed fluid generator and at least two curved pipes is a multi-curved pipe engine; the curved pipes of the multi-curved pipe engine are arranged in series, in parallel, or in series and parallel, or in any one or a combination thereof. The curved pipes arranged in series are called a series multi-curved pipe engine, the curved pipes arranged in parallel are called a parallel multi-curved pipe engine, and the curved pipes arranged in series and parallel are called a series-parallel multi-curved pipe engine.

5. The bent pipe engine according to claim 1, characterized in that: The outlet of the single curved tube engine and the inlet of the high-speed fluid generator are sealed and connected by a conduit to form a circulating single curved tube engine, and the outlet of the multi-curved tube engine and the inlet of the high-speed fluid generator are sealed and connected by a conduit to form a circulating multi-curved tube engine.

6. The bent pipe engine according to claim 1, characterized in that: The inlet and outlet at both ends of some curved pipes of the multi-curved pipe engine are directly connected by a bypass conduit to form a bypass multi-curved pipe engine. A valve is provided on the bypass conduit. When the valve is closed, all fluids flow through the corresponding curved pipe; when the valve is gradually opened, part of the fluid flows through the bypass conduit, and the fluid flowing through the corresponding curved pipe gradually decreases.

7. A bent pipe engine aircraft, using the bent pipe engine according to any one of claims 1 to 6, characterized in that: It comprises a fuselage, a curved tube engine, and a control system, wherein the curved tube engine is installed on the fuselage, and the control system is installed on one side of the fuselage; When the bent pipe engine installed in the aircraft is a non-circulating bent pipe engine, the bent pipe engine aircraft further comprises a flow guide device, and the flow guide device is installed at the bent pipe outlet of the bent pipe engine.

8. A method for controlling a curved pipe engine, used for the curved pipe engine according to any one of claims 1 to 6, characterized in that: It includes a single curved pipe engine control method, a multi-curved pipe engine control method, a bypass multi-curved pipe engine control method, a circulating single curved pipe engine control method and a circulating multi-curved pipe engine control method; the single curved pipe engine and multi-curved pipe engine control methods are used to control the size and direction of the thrust F of the single curved pipe engine and the multi-curved pipe engine; the bypass multi-curved pipe engine control method is used to control the size and direction of the thrust F of the bypass multi-curved pipe engine; the circulating single curved pipe engine control method is used to control the size and direction of the thrust F of the circulating single curved pipe engine; the circulating multi-curved pipe engine control method is used to control the size and direction of the thrust F of the circulating multi-curved pipe engine.

9. A method for controlling a bent-pipe engine aircraft, used for the bent-pipe engine aircraft according to claim 7, characterized in that: include: Controlling the thrust of the curved tube engine to be adjusted to balance with the gravity of the aircraft, so that the aircraft is hovering; Controlling the thrust of the curved tube engine to be vertically upward; if the thrust is greater than the gravity of the aircraft, the aircraft will rise vertically; if the thrust is less than the gravity of the aircraft, the aircraft will fall vertically; Control the propulsion force of the curved tube engine to be forward and upward, and the component force in the vertical direction is balanced with the gravity of the aircraft, so that the aircraft moves forward; Control the propulsion force of the curved tube engine to be backward and upward, and the component force in the vertical direction is balanced with the gravity of the aircraft, so that the aircraft moves backward; The component of the thrust of the curved tube engine in the vertical direction is controlled to be balanced with the gravity of the aircraft. If the component of the thrust of the curved tube engine in the horizontal direction is directed to any direction, the aircraft will move laterally to any direction.

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