Electromagnetic circulation speed-increasing jet engine

Abstract

An electromagnetic circulation acceleration device is additionally arranged on the tail portion of the jet generator, high-temperature plasma tail gas enters a circulation acceleration cavity through a flow guide hole, and under the action of electromagnetic force, the plasma tail gas is circularly accelerated till the movement speed of the plasma tail gas reaches the requirement. The high-speed gas which is accelerated circularly is jetted out from the tail part of the engine through the fairing, so as to provide required power for the aircraft. The invention has the following characteristics: 1, the method can be applied to low-power engines for maintaining and adjusting the attitude of an airship and the like, and can also be applied to high-power engines for aerospace flight and the like; 2, the injected gas can be cyclically accelerated, the working medium speed is only limited by the power of the power supply without other limitations, and the specific impulse is high; and 3, the electromagnetic driving technology is mature in development and high in reliability. And 4, the structure is simple, the cost is low and the economy is good. The structure is compact, and popularization is convenient.

Description

(I) Technical field

[0001] The invention relates to an aerospace jet engine, in particular to a jet engine which utilizes electromagnetic induction to increase cycle speed. (II) Background technology

[0002] A jet engine is a reaction engine that generates thrust through jets. Most jet engines are internal combustion engines that rely on Newton's third law. Jet engines include rocket engines and air jet engines. The most commonly used air jet engine on modern air transport aircraft is the turbofan engine, which is characterized by high thrust, low noise and low fuel consumption.

[0003] The final reaction force acting on the engine, namely the thrust, is proportional to the mass of the airflow discharged by the engine and the speed of the airflow. According to the basic laws of physics, the propulsion energy is proportional to the mass pushed out, and even more proportional to the square of the speed of the pushed out substance. Obviously, the only way to increase the propulsion efficiency of the engine is to increase the speed of the pushed out substance.

[0004] The propulsion speed of existing chemical fuel propellants, that is, the working fluid injection speed, generally does not exceed 4300m / s. The theoretical upper limit of electromagnetic propulsion speed is the speed of light.

[0005] In order to increase the jet speed of the working fluid, people invented the electromagnetic rocket engine, which uses the electromagnetic field to accelerate the ionized working fluid (hydrogen, helium, argon, lithium vapor, etc.) and ionize it into a conductive neutral plasma under high temperature conditions. The carrier plasma generates the Lorentz force under the action of the magnetic field, which accelerates the plasma to eject and generate thrust. The electromagnetic rocket engine is a high specific impulse rocket engine. However, due to the large weight of its power machinery, the thrust is limited, and it is only suitable for small thrust engines.

[0006] In order to increase the thrust of the electromagnetic engine, according to the Ampere force formula: F = IBL; where I is the propellant current, B is the propellant magnetic field induction intensity, and L is the length of the current flowing in the propellant. The magnetic induction intensity B is also proportional to the coil current intensity I. Therefore, increasing the thrust of the electromagnetic engine is attributed to increasing the current I and increasing the propellant current length L. Due to the influence of the wire resistance, the increase of the current I is limited. Generally, increasing the propellant current length L will inevitably increase the engine volume.

[0007] The relevant patents for rocket engines are as follows:

[0008] Patent application number: CN200510055037.5, entitled "Rocket Engine". This patent is a rocket engine (10), comprising a first (76) and a second (142) rotating nozzle for injecting corresponding fuel (20) and oxidizer (18) propellant components into a first combustion chamber (34), and the exhaust flow (38) from the first combustion chamber (34) drives a turbine (40) for rotating the rotating nozzles (76, 142). The mixture in the first combustion chamber (34) is preferably rich in fuel to reduce the associated combustion temperature, and in the second combustion chamber (36), the fuel-rich exhaust flow is mixed with the auxiliary oxidizer injected by the third rotating nozzle (182) to form a high-temperature exhaust flow (214) suitable for propulsion. The rotating nozzle (76, 142, 182) is provided with an annular pressure stop ring (86, 146, 174) to separate the low pressure propellant supply source (22', 24') from the relatively high pressure of the corresponding combustion chamber (34, 36). A portion of the fuel-rich exhaust flow from the first combustion chamber (34) flows to an annular passage (198, 204) surrounding the combustion chamber (34, 36) to provide outflow cooling to the surface (218) of the second combustion chamber (36).

[0009] An object of this invention is to provide a low cost, high reliability rocket engine.

[0010] The patent application number is CN02153991.X and is named "Rocket Engine Attachment". This patent application involves improvements in the structure of rocket engines, and provides an attachment for rocket engines to improve the efficiency of rocket engines. A cylinder with an inner diameter larger than the inner diameter of the nozzle throat is welded to the inside of the combustion chamber with a steel plate, and a gap is left between the cylinder and the bottom of the combustion chamber. With the attachment, the gas around the combustion chamber will be restricted to rush out through the narrow gap between the cylinder and the bottom of the combustion chamber, and the air flow speed will be significantly accelerated, thereby reducing the air pressure at the bottom of the combustion chamber and increasing the thrust of the rocket.

[0011] The method of using a small gap to accelerate the jet stream has limited effect on increasing the thrust of the rocket.

[0012] Therefore, it is necessary to design a jet engine with high specific impulse, high thrust, reliability and high efficiency. (III) Summary of the invention

[0013] The invention is to add an electromagnetic circulation acceleration device to the tail of the jet generator, and the high-temperature plasma tail gas enters the circulation acceleration chamber through the guide hole. Under the action of electromagnetic force, the plasma tail gas is circulated and accelerated until its movement speed reaches the required speed. The high-speed gas after cyclic acceleration is ejected from the tail of the engine through the fairing to provide the required power for the aircraft.

[0014] The object of the present invention is achieved in that:

[0015] The jet generator provides the power required for the excitation coil and the driving current, and provides the high-temperature plasma airflow required for the jet power. After the plasma airflow enters the circulating acceleration chamber, it moves in a circle around the center of the electrode ring core axis under the action of the driving current and magnetic field, and is continuously accelerated. When the airflow speed reaches the set value, the airflow is discharged from the outlet at a high speed to drive the aircraft to fly. (IV) Description of the drawings

[0016] The specific structure of the present invention is given by the following embodiments and the accompanying drawings:

[0017] Attached Figure 1 It is a cross-sectional view of the electromagnetic cycle speed-increasing jet engine B of the present invention.

[0018] Attached Figure 2 It is a right side view of the electromagnetic cycle speed-increasing jet engine of the present invention.

[0019] Attached Figure 3 It is a cross-sectional view of the electromagnetic cycle speed-increasing jet engine A of the present invention.

[0020] Attached Figure 4 It is an axonometric view of the electromagnetic cycle speed-increasing jet engine of the present invention.

[0021] Among them, (1) jet generator, (2) electromagnetic speed increasing cavity, (3) coil 1, (4) coil 2, (5) core shaft, (6) core shaft support, (7) air inlet, (8) air outlet, (9) magnetic field direction 1, (10) magnetic field direction 2, (11) air inlet direction, (12) air outlet direction, (13) coil current direction, (14) driving current direction, (15) gas force direction, (16) positive electrode, (17) negative electrode, (18) fairing, (19) coil 3, (20) coil 4, (21) coil 5, and (22) coil 6.

[0022] Referring to the accompanying drawings: a ring-shaped electromagnetic speed-increasing chamber (2) is installed at the tail of the jet generator (1), and six ring-shaped coils are installed on the electromagnetic speed-increasing chamber (2), namely coil 1 (3), coil 2 (4), coil 3 (19), coil 4 (20), coil 5 (21), and coil 6 (22). The center of the electromagnetic speed-increasing chamber (2) is a core shaft (5) supported by a core shaft support (6). The core shaft (5) is a conductor and is connected to the positive pole of the circuit through the positive electrode (16). The outer shell of the electromagnetic speed-increasing chamber (2) is also a conductor and is connected to the negative pole of the circuit through the negative electrode (17). The electromagnetic speed-increasing chamber (2) is provided with an air inlet (7) and an air outlet (8) for the entry and discharge of airflow.

[0023] The jet generator (1) is driven by fuel combustion to generate electric current and eject plasma gas, which enters the interior of the electromagnetic speed-increasing chamber (2) through the air inlet of the electromagnetic speed-increasing chamber (2) along the air inlet direction (11). The gas generates an Ampere force in the force direction (15) under the action of the magnetic field and current generated by the coil. Under the action of this Ampere force, the gas is accelerated in a circulation manner. When the gas is accelerated to a set value, the gas is discharged at a high speed through the air outlet (8).

[0024] The above figures are only for the convenience of description, and six excitation coils are set. In fact, this number can be set arbitrarily according to the needs. The jet generator can also be set as a plasma generator, and the power supply is provided by other equipment (nuclear battery, solar cell, etc.).

[0025] The present invention is not limited to applications in the fields of aviation, aerospace, etc., but can also be applied to the fields of cannons, missiles, high-energy jets, particle acceleration, scientific research, etc. (V) Specific implementation methods

[0026] According to the attached drawings, coils 1 (3) to 6 (22) are manufactured; and the electromagnetic speed increasing chamber (2), the core shaft (5), and the core shaft support (6) are manufactured and installed. Then they are installed at the tail of the jet generator to form an electromagnetic cycle speed increasing jet engine.

[0027] The working process of the present invention is as follows:

[0028] 1. The gas ejected from the jet generator (1) enters the interior of the electromagnetic speed increasing chamber (2) through the air inlet (7) along the air inlet direction (11).

[0029] 2. The directions of the magnetic fields generated by the currents in coil 1 (3) and coil 2 (4) are magnetic field direction 1 (9) and magnetic field direction 2 (10).

[0030] 3. The core shaft (5) is connected to the positive pole of the power supply, the electromagnetic speed increasing chamber (2) is connected to the negative pole of the power supply, and the current direction is the driving current direction (14).

[0031] 4. The airflow is accelerated along the direction of the gas force (15) and flows in the direction of the gas force (15).

[0032] 5. The airflow circulates and accelerates in the electromagnetic speed increasing chamber (2).

[0033] 6. The air flow velocity reaches the set escape velocity and is ejected from the air outlet (8).

[0034] 7. The air is rectified and ejected in the fairing (18) to drive the spacecraft to fly.

[0035] The present invention has the following characteristics:

[0036] 1. It can be used in small-power engines such as spacecraft attitude maintenance and adjustment, and can also be used in high-power engines such as aerospace flight.

[0037] 2. The jet gas can be accelerated in a cycle, the working fluid speed is only limited by the power supply, there are no other restrictions, and the specific impulse is high.

[0038] 3. Electromagnetic drive technology is mature and highly reliable.

[0039] 4. Simple structure, low cost, good economy, compact structure, and easy to popularize.

Claims

1. An electromagnetic cycle speed-up jet engine, characterized in that The electromagnetic cycle speed-up jet engine has: Jet generator (1), electromagnetic speed increasing cavity (2), coil 1 (3), coil 2 (4), core shaft (5), core shaft support (6), air inlet (7), air outlet (8), magnetic field direction 1 (9), magnetic field direction 2 (10), air inlet direction (11), air outlet direction (12), coil current direction (13), drive current direction (14), gas force direction (15), positive electrode (16), negative electrode (17), fairing (18), coil 3 (19), coil 4 (20), coil 5 (21), coil 6 (22).

2. The electromagnetic cycle speed-up jet engine according to claim 1, characterized in that: The tail of the jet generator (1) is provided with an annular electromagnetic speed-increasing cavity (2), on which six annular coils are provided, namely coil 1 (3), coil 2 (4), coil 3 (19), coil 4 (20), coil 5 (21), and coil 6 (22). The center of the electromagnetic speed-increasing cavity (2) is a core shaft (5) supported by a core shaft support (6).

3. The electromagnetic cycle speed-up jet engine according to claim 1, characterized in that: The core shaft (5) is a conductor and is connected to the positive pole of the circuit through the positive electrode (16); the shell of the electromagnetic speed-increasing chamber (2) is also a conductor and is connected to the negative pole of the circuit through the negative electrode (17). The electromagnetic speed-increasing chamber (2) is provided with an air inlet (7) and an air outlet (8) for the entry and exit of airflow.

4. The electromagnetic cycle speed-up jet engine according to claim 1, characterized in that: The jet generator (1) is driven by fuel combustion to generate electric current and eject plasma gas, which enters the interior of the electromagnetic speed-increasing chamber (2) through the air inlet of the electromagnetic speed-increasing chamber (2) along the air inlet direction (11). The gas generates an Ampere force in the force direction (15) under the action of the magnetic field and current generated by the coil. Under the action of this Ampere force, the gas is accelerated in a circulation manner. When the gas is accelerated to a set value, the gas is discharged at a high speed through the air outlet (8).

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