阅读说明：本技术 航母舰载机电磁弹射器 (Electromagnetic catapult for carrier-based aircraft ) 是由 朱幕松 于 2019-12-07 设计创作，主要内容包括：一种航母舰载机电磁弹射器,由航母、舰载机、条形无刷永磁直线电机、蓄电池组、智能控制器和操作台组成,直线电机属于双驱动电机,直线定子与左永磁条和右永磁条组成多个磁极互为相反的闭合磁通回路,直线定子的多个铁芯线圈经过自动换相,形成的运动磁场驱动左、右永磁条,直线电机、蓄电池组和智能控制器一体化集中在方管形机架内,整体机构成为简单的密封结构的电磁弹射器的核心,整体机构保护性好,可靠性高,蓄电池组的能量储存大,调整蓄电池的数量和电压,满足舰载机起飞时必需的电量和功率,起飞按钮的F形推杆上的上、下永磁颗粒之间的调压霍尔传感器位于不同的位置,直线电机产生不同的推力,简单有效地实现推力可控的电磁弹射器。(An electromagnetic catapult for carrier-based aircraft is composed of carrier, carrier-based aircraft, strip-shaped brushless permanent-magnet linear motor, accumulator set, intelligent controller and operating platform, and features that said linear motor is dual-drive one, the linear stator, left and right permanent-magnet strips constitute a closed magnetic-flux loop with opposite magnetic poles, the multiple iron core coils of linear stator are automatically phase-changed to form moving magnetic field to drive left and right permanent-magnet strips, and said linear motor, accumulator set and intelligent controller are integrated in square-tube frame, the linear motor generates different thrusts, and the electromagnetic catapult with controllable thrust is simply and effectively realized.)

1. The electromagnetic catapult for the shipboard aircraft of the aircraft carrier comprises the aircraft carrier, the shipboard aircraft, a strip-shaped brushless permanent magnet linear motor, a storage battery, an intelligent controller and an operation console, and is characterized in that: the electromagnetic catapult of the shipboard aircraft of the aircraft carrier is provided with an aircraft carrier (1), a rectangular strip-shaped groove is arranged on a deck (2) of the aircraft carrier, the length of the strip-shaped groove is smaller than that of the deck of the aircraft carrier, a strip-shaped brushless permanent magnet linear motor (3) is arranged in the strip-shaped groove, a plurality of shipboard aircraft (4) are arranged on the deck of the aircraft carrier, the shipboard aircraft comprises a light fighter and a heavy fighter or an unmanned fighter, an operating room (5) is arranged behind the deck of the aircraft carrier, an operating table (6) is arranged in the operating room, a heavy fighter takeoff button (7), a light fighter takeoff button (8) and a power supply button (9) are arranged on the operating table, the strip-shaped brushless permanent magnet linear motor is provided with a front aircraft box (10) and a rear aircraft box (11), an intelligent controller (12) is arranged at the front end in the front aircraft box, a, the front and rear storage battery sets are connected in series to form an integral storage battery set, the integral storage battery set is charged by a direct-current power supply output by an aircraft carrier generator, the strip-shaped brushless permanent magnet linear motor is provided with a square tubular frame (15), a left rail (16), a right rail (17), an upper rail (18) and a lower rail (19) are arranged in the square tubular frame, the upper end of the square tubular frame is provided with a left connecting edge (20) and a right connecting edge (21), the strip-shaped groove is provided with a left mounting edge (22) and a right mounting edge (23), the left and right connecting edges are mounted at the upper ends of the left and right mounting edges, the planes of the left and right connecting edges are consistent with the plane of a deck, the left and right connecting edges are fixed by a plurality of countersunk head screws (24) after being inosculated with the left and right mounting edges, the length of the square tubular frame is equal to that of the strip-shaped groove, the groove, the upper end of the groove-shaped frame is provided with a linear stator (26), the linear stator is provided with a plurality of I-shaped iron cores (27), the I-shaped iron cores are formed by overlapping a plurality of I-shaped silicon steel sheets, each I-shaped iron core is provided with a left mounting hole and a right mounting hole, the first silicon steel sheet at the upper end of each I-shaped iron core is thicker and is provided with an iron core pressing plate (28), each iron core pressing plate is provided with a left nut hole and a right nut hole, the groove-shaped frame is provided with a plurality of left screw rod holes and a plurality of right screw rod holes, the left screw rod holes and the right screw rod holes are symmetrical left and right, the left screw rod holes and the right screw rod holes are all corresponding, the equal distances among the left screw rod holes and the right screw rod holes are equal to the length of the front end and the rear end of the I-shaped iron core, a plurality of left screw rods (29) and a plurality of right screw rods (30) are arranged in the left screw rod holes and, the middle of the bottom of the square tube frame is provided with a plurality of left mounting holes and a plurality of right mounting holes, the left mounting holes correspond to the left screw holes, the right mounting holes correspond to the right screw holes, the left screw rods and the right screw rods pass through the left mounting holes and the right mounting holes at the bottom of the square tube frame, pass through the left screw rod holes and the right screw rod holes of the groove-shaped frame, pass through the left mounting holes and the right mounting holes of the I-shaped iron core, pass through the left nut holes and the right nut holes of the iron core pressing plate, and fasten the square tube frame, the groove-shaped frame, the I-shaped iron cores and the iron core pressing plate together, the I-shaped iron cores are arranged into a strip-shaped iron core close to each other, the length of the strip-shaped iron core is equal to that of the groove-shaped frame, the front end of the strip-shaped iron core is aligned with the rear end of the front machine box, the rear end of the strip-shaped iron core is aligned with the front end of the rear machine box, the bottoms of the front machine box and the rear machine box are, the surface of each I-shaped iron core is provided with an insulating outer sleeve (33), a plurality of layers of enameled wires are horizontally wound on the insulating outer sleeve to form an iron core coil (34), a plurality of iron core coils are connected into a linear stator, each I-shaped iron core is provided with a left trapezoidal magnetic pole (35) and a right trapezoidal magnetic pole (36), the angle points between the I-shaped iron cores are aligned with each other and are close to each other without gaps, a plurality of coil windings are sealed in the I-shaped iron cores to form a slotless linear stator, the slotless linear stator has less magnetic leakage, tooth noise generated when the linear stator works can be avoided during magnetic field commutation, the plurality of iron core coils are averagely divided into 3 coil windings with different phases, the plurality of iron core coils are respectively connected into an A-phase coil, a B-phase coil and a C-phase coil, the electrical angle of the position difference between the 3-phase coils is 120 degrees, and each phase, the winding directions of adjacent iron core coils are opposite to each other, each phase of coil is averagely divided into a plurality of sub-coil windings, the number of the sub-coil windings of the 3-phase coil is equal, the sub-coil windings of the 3-phase coil are mutually crossed at equal positions, the positions of the sub-coil windings of the 3-phase coil are different by 120 degrees in electric angle, the 3-phase coil is connected into a Y-shaped circuit, the head end of the 3-phase coil is connected with a neutral wire, the tail end of the 3-phase coil leads out a 3-phase output wire, a wiring cavity (37) is arranged between the bottom of the groove-shaped frame and the iron core coils and is used for installing a jumper wire, the neutral wire, the sensor lead-out wire and the 3-phase coil output wire between the 3-phase coils, 3 sensor grooves with different positions are arranged among the I-shaped iron cores, and an A-phase Hall sensor (38), a B-phase Hall sensor (39) and a, the 3 Hall sensors are all switch-type sensors, the difference between the 3 Hall sensors is 120 degrees in electrical angle, the intelligent controller is provided with a phase-change circuit with 120 degrees in electrical angle, leading-out wires of the 3 Hall sensors are led out downwards through gaps among a plurality of iron core coils, 3 vertical linear grooves (41) are erected in the groove shape, the 3 vertical linear grooves are respectively aligned with the 3 Hall sensors, and the leading-out wires of the 3 Hall sensors are respectively led into the wiring cavity through the 3 vertical linear grooves; the strip-shaped brushless permanent magnet linear motor is provided with a strip-shaped magnetic conductive vehicle, the strip-shaped magnetic conductive vehicle is provided with a left side plate (42), a right side plate (43) and a top plate (44), the left side plate and the right side plate are magnetic conductive plates made of iron materials, the top plate is a non-magnetic conductive plate made of aluminum alloy materials, the cross section of the top plate is n-shaped, the left side plate and the right side plate are connected with the top plate through screws, the front end of the left side plate is welded with an upper connecting plate and a lower connecting plate, the left end of the upper connecting plate and the left end of the lower connecting plate are welded with a left front wheel axle, the rear end of the left side plate is welded with an upper connecting plate (45) and a lower connecting plate (46), the left end of the upper connecting plate and the lower connecting plate is welded with a left rear wheel axle (47), the front end of the right side plate is welded with an upper connecting plate and a lower connecting plate, the left end of, the upper end and the lower end of the 4 wheel shafts are respectively provided with a bearing (51), 8 bearing excircles are respectively provided with a pulley (52), 4 pulleys of the left side plate roll on a left rail in the square tubular frame, 4 pulleys of the right side plate roll on a right rail in the square tubular frame, the front upper ends of the left side plate and the right side plate are respectively provided with a front wheel shaft (53), the left front wheel shaft and the right front wheel shaft are respectively provided with a bearing (54), the bearings are respectively provided with a left front pulley (55) and a right front pulley (56), the left front pulley and the right front pulley roll on an upper rail in the square tubular frame, the rear lower ends of the left side plate and the right side plate are respectively provided with a rear wheel shaft (57), the left rear wheel shaft and the right rear wheel shaft are respectively provided with a bearing (58), the bearings are respectively provided with a left rear pulley (59) and a right rear pulley (60), the left rear pulley and the right rear pulley roll on a lower rail in the square tubular frame, the middle of the upper rail of the square tubular, a propelling knife board (62) is arranged in the middle of a top plate of the strip-shaped magnetic conduction vehicle, the propelling knife board is positioned in a linear groove, a carrier-based aircraft is arranged at the upper end of a square-tube-shaped rack, a V-shaped rail (63) is arranged at the lower end of the carrier-based aircraft, a steel bar is bent into a right-angle shape by the V-shaped rail, a right-angle point faces towards the lower end, a left connecting edge and a right connecting edge (64) at the upper end of the V-shaped rail are connected with an aircraft body, the upper end of the propelling knife board is positioned at the right-angle point of the V-shaped rail, the propelling knife board pushes the V-shaped rail forwards to drive the carrier-based aircraft to accelerate, the carrier-based aircraft ascend; the left end face of the left side plate of the strip-shaped magnetic conduction vehicle is provided with a left permanent magnet strip (65), the left end face of the right side plate is provided with a right permanent magnet strip (66), the lengths of the left permanent magnet strip and the right permanent magnet strip are both equal to the length of the strip-shaped magnetic conduction vehicle, the widths of the left permanent magnet strip and the right permanent magnet strip are both equal to the width of the strip-shaped iron core, the left permanent magnet strip and the right permanent magnet strip are formed by splicing a plurality of square permanent magnets (67), the polarities of the adjacent square permanent magnets are opposite, each square permanent magnet is a strong magnet made of rare earth materials, the front and back lengths of the square permanent magnets are similar to but not equal to the front and back lengths of the I-shaped iron core, the number and the size of the square permanent magnets of the left permanent magnet strip and the right permanent magnet strip are equal, the left permanent magnet strip and the right permanent magnet strip are, forming equal left and right uniform air gaps (68, 69); 8 pulleys at the left end and the right end of the strip-shaped magnetic conduction vehicle are respectively supported on a left rail and a right rail in the square tubular frame, when the strip-shaped magnetic conduction vehicle moves back and forth in the square tubular frame, the positions of parallel lines at the left end and the right end of the vehicle body are stable, a left front pulley and a right front pulley are supported on an upper rail in the square tubular frame, a left rear pulley and a right rear pulley are supported on a lower rail in the square tubular frame, a pushing knife plate pushes a V-shaped blocking rod forwards, the acting force of the left front pulley and the right front pulley is upwards, the acting force of the left rear pulley and the right rear pulley is downwards, and when the strip-shaped magnetic conduction vehicle moves forwards in the square tubular frame, the positions of the parallel lines at the upper end and the lower; a plurality of iron core coils are positioned between a left permanent magnet strip and a right permanent magnet strip to form a closed magnetic field with a plurality of mutually opposite magnetic poles, the plurality of iron core coils are electrified and then automatically phase-switched to form a moving magnetic field to drive a strip-shaped magnetic conduction vehicle, the left end of a front machine box of the strip-shaped brushless permanent magnet linear motor is provided with a front Hall sensor (70), the left end of a rear machine box is provided with a rear Hall sensor (71), the front Hall sensor and the rear Hall sensor are both switch-type sensors, when the strip-shaped magnetic conduction vehicle accelerates forwards to reach the front end of a square tube-shaped frame, a square permanent magnet at the front end of the left permanent magnet strip is close to the front Hall sensor, the front Hall sensor outputs a signal to an electric brake input end of an intelligent controller, the strip-shaped magnetic conduction vehicle brakes and stops immediately, then the intelligent controller controls the strip-shaped magnetic conduction vehicle to automatically reverse at a low speed according to a, the rear Hall sensor outputs a signal to an electric brake input end of the intelligent controller, the strip-shaped magnetic conduction vehicle immediately brakes and stops, the propulsion knife board is reset at the rear end of the linear groove, and the next carrier-based aircraft is prepared to take off; the heavy fighter takeoff button and the light fighter takeoff button are speed-regulating buttons, the output end of the speed-regulating button is connected with the speed-regulating input end of the intelligent controller, the speed-regulating button regulates the driving voltage of the strip-shaped brushless permanent magnet linear motor, the heavy fighter takeoff button is provided with an F-shaped short push rod (72), the light fighter takeoff button is provided with an F-shaped long push rod (73), the middle ends of the long push rod and the short push rod are respectively provided with an upper permanent magnet particle (74), the lower ends of the long push rod and the short push rod are respectively provided with a lower permanent magnet particle (75), the upper permanent magnet particles and the lower permanent magnet particles vertically correspond to each other, the polarities of the upper permanent magnet particles and the lower permanent magnet particles of the long push rod are opposite, the distance between the upper permanent magnet particles and the lower permanent magnet particles of the short push rod is long, and a front voltage-regulating Hall sensor (76), a rear voltage-regulating Hall sensor (77) is arranged between an upper permanent magnetic particle and a lower permanent magnetic particle of a short push rod, the front voltage-regulating Hall sensor and the rear voltage-regulating Hall sensor are positioned in a variable magnetic field between an N pole and an S pole, the front voltage-regulating Hall sensor and the rear voltage-regulating Hall sensor output signal voltages with different heights according to the change of the strength and the polarity of a magnetic line of force, a take-off button of the heavy fighter and the take-off button of the light fighter are in a static state, the S pole of the lower permanent magnetic particle of the heavy fighter and the take-off button of the light fighter are close to the front voltage-regulating Hall sensor and the rear voltage-regulating Hall sensor by the elasticity of a button spring, the signal voltages output by the front voltage-regulating Hall sensor and the rear voltage-regulating Hall sensor are both 0V, when the take-off button of the heavy fighter is pressed, the N pole of the upper permanent, because the distance between the upper permanent magnetic particles and the lower permanent magnetic particles is long, the front voltage-regulating Hall sensor is positioned on the middle upper side of the upper permanent magnetic particles and the lower permanent magnetic particles, the magnetic force line of the front voltage-regulating Hall sensor is weak, the signal voltage output by the front voltage-regulating Hall sensor is 3V, the button pressing process is a process of linear change of the signal voltage from 0V to 3V, when the takeoff button of the heavy fighter is pressed, the signal at the speed-regulating input end of the intelligent controller is 5V high voltage, the driving voltage of the strip-shaped brushless permanent magnetic linear motor is high and high in power, when the takeoff button of the light fighter is pressed, the signal at the speed-regulating input end of the intelligent controller is 3V low voltage, the driving voltage of the strip-shaped brushless permanent magnetic linear motor is low and low in power, when the signal voltage at the speed-regulating input end of the intelligent controller is 0V, the strip-shaped brushless permanent magnetic linear motor is shut down, the takeoff, the strip-shaped brushless permanent magnet linear motor has the advantages that the driving voltage of the strip-shaped brushless permanent magnet linear motor is increased from low to high, so that the carrier-based aircraft takes off in a flexible acceleration state, and the taking off in an impact state is avoided.

2. The aircraft carrier-based electromagnetic launcher according to claim 1, wherein: the length of the linear stator is about 5 meters, the stroke of the propulsion knife board is greater than 100 meters, the length of the strip-shaped magnetic conduction vehicle is about 110 meters, the length of the square-tube-shaped rack is greater than 220 meters, the stroke of the propulsion knife board is the accelerated takeoff length of the carrier-based aircraft on the aircraft carrier deck, and the thrust and the acceleration of the propulsion knife board must meet the takeoff requirement of the carrier-based aircraft within the stroke range of the propulsion knife board, so that the driving power of the linear motor is greater than the maximum takeoff power of the carrier-based aircraft, and the final speed of the propulsion knife board is greater than 300 kilometers per hour.

3. The aircraft carrier-based electromagnetic launcher according to claim 1, wherein: the linear stator, the left permanent magnet strip and the right permanent magnet strip form a plurality of closed magnetic flux loops with opposite magnetic poles, a plurality of iron core coils of the linear stator are electrified and then automatically phase-changed to form a moving magnetic field to drive the left permanent magnet strip and the right permanent magnet strip, so the strip-shaped brushless permanent magnet linear motor belongs to a dual-drive motor, because two adjacent iron core coils, two adjacent left square permanent magnets and two adjacent right square permanent magnets form a closed magnetic flux loop with a strong magnetic field, the magnetic flux density of an I-shaped iron core is large, the magnetic path of the I-shaped iron core is short, the loss of the coils and the iron core is small, the efficiency and the power of the strip-shaped brushless permanent magnet linear motor are high, the strip-shaped brushless permanent magnet linear motor, the storage battery pack and the intelligent controller which form the electromagnetic catapult of the carrier-borne aircraft carrier are integrated in a square-tube-shaped frame, the square-tube-shaped frame, the square pipe-shaped frame becomes the core of the electromagnetic catapult with a simple sealing structure, the whole mechanism is good in protectiveness and high in reliability, the energy storage of the storage battery pack is large, the quantity and the voltage of the storage battery are adjusted, the electric quantity and the power which are necessary when the carrier-based aircraft takes off are met, different take-off buttons are selected according to the size of the carrier-based aircraft, the pressure-regulating Hall sensors between the permanent magnetic particles and the lower permanent magnetic particles are located at different positions on the F-shaped push rod of the take-off button, the linear motor generates different thrust, and the electromagnetic catapult with the controllable thrust.

Technical Field

The invention relates to a shipboard electromechanical catapult, in particular to a shipboard electromechanical catapult of an aircraft carrier.

Background

At present, most of shipboard aircraft ejectors used on aircraft carriers of various countries in the world are steam type ejectors, steam ejection systems are complex in structure, large in size, high in cost, difficult to maintain and manufacture and poor in performance, and belong to backward military technologies.

Disclosure of Invention

The invention aims to disclose an electromagnetic catapult of a carrier-based aircraft of an aircraft carrier, which has good technical performance and a simple structure.

The technical scheme for realizing the electromagnetic catapult of the shipboard aircraft of the aircraft carrier comprises the aircraft carrier, a shipboard aircraft, a strip-shaped brushless permanent magnet linear motor, a storage battery, an intelligent controller and an operation console, wherein a rectangular strip-shaped groove is formed in a deck of the aircraft carrier, the length of the strip-shaped groove is smaller than that of a deck of the aircraft carrier, the strip-shaped brushless permanent magnet linear motor is arranged in the strip-shaped groove, a plurality of shipboard aircraft are arranged on the deck of the aircraft carrier, the shipboard aircraft comprises a light fighter and a heavy fighter or an unmanned fighter, an operation room is arranged behind the deck of the aircraft carrier, the operation room is internally provided with the operation console, a take-off button of the heavy fighter, a take-off button of the light fighter and a power supply button are arranged on the operation console, the strip-shaped brushless permanent magnet linear motor is provided with a front aircraft box and a rear aircraft box, the intelligent, the front and rear storage battery packs are connected in series to form an integral storage battery pack, the integral storage battery pack is charged by a direct-current power supply output by an aircraft carrier generator, the strip-shaped brushless permanent magnet linear motor is provided with a square-tube-shaped frame, a left rail, a right rail, an upper rail and a lower rail are arranged in the square-tube-shaped frame, the upper end of the square-tube-shaped frame is provided with a left connecting edge and a right connecting edge, the strip-shaped groove is provided with a left mounting edge and a right mounting edge, the left and right connecting edges are mounted at the upper ends of the left and right mounting edges, the planes of the left and right connecting edges are consistent with the plane of a deck, after the left and right connecting edges are matched with the left and right mounting edges, the left and right connecting edges are fixed by a plurality of countersunk head screws, the length of the square-tube-shaped frame is equal to that of the strip-shaped groove, a groove-shaped frame is arranged in the middle of the inner bottom, the I-shaped iron core is provided with a left mounting hole and a right mounting hole, the first silicon steel sheet at the upper end of the I-shaped iron core is thicker and is provided as an iron core pressing plate, the iron core pressing plate is provided with a left nut hole and a right nut hole, a plurality of left screw rod holes and a plurality of right screw rod holes are erected in a groove shape, the left screw rod holes and the right screw rod holes are all symmetrical, the left screw rod holes and the right screw rod holes are all corresponding, the equal distance between the left screw rod holes and the right screw rod holes is equal to the length of the front end and the rear end of the I-shaped iron core, a plurality of left screw rods and a plurality of right screw rods are arranged in the left screw rod holes and the right screw rod holes, the left screw rods and the right screw rods are slender sunk screws, a plurality of left mounting holes and a plurality of right mounting holes are arranged in the middle of the bottom of the square tube frame, a plurality of left mounting holes and a plurality of right mounting holes are all corresponding to the left screw rods and a plurality of right screw rod holes are all corresponding to the right screw rods, and the left, the square tube frame, the slot frame, the I-shaped iron cores and the iron core pressing plate are fastened together through a left screw rod hole and a right screw rod hole of the slot frame, a left nut hole and a right nut hole of the iron core pressing plate, the I-shaped iron cores are closely arranged into strip-shaped iron cores, the length of the strip-shaped iron cores is equal to that of the slot frame, the front ends of the strip-shaped iron cores are aligned with the rear end of the front machine box, the rear ends of the strip-shaped iron cores are aligned with the front end of the rear machine box, the bottoms of the front machine box and the rear machine box are respectively fastened in the middle of the bottom of the square tube frame through front screws and rear screws, an insulating outer sleeve is arranged on the surface of each I-shaped iron core, a plurality of layers of enameled wires are horizontally wound on the insulating outer sleeves to form an iron core coil, the iron core coils are connected into a linear stator, each I-shaped iron core is provided with a left trapezoidal magnetic pole and a right trapezoidal magnetic pole, the angle, the coil windings are sealed in the iron cores without gaps to form a slotless linear stator, the slotless linear stator has less magnetic leakage, when a magnetic field is reversed, tooth noise generated when the linear stator works can be avoided, a plurality of iron core coils are averagely divided into 3 coil windings with different phases, the plurality of iron core coils are respectively connected into an A-phase coil, a B-phase coil and a C-phase coil, the electrical angle of the position difference between the 3-phase coils is 120 degrees, each phase coil is formed by connecting a plurality of iron core coils with equal number in series, the winding directions of the adjacent iron core coils are opposite to each other, each phase coil is averagely divided into a plurality of branch coil windings, the number of the 3-phase plurality of branch coil windings is equal, the 3-phase plurality of branch coil windings are mutually crossed at the equally divided positions, the position between the 3-phase plurality of branch coil windings is different from the electrical angle of 120 degrees, the 3-phase coils are connected into a Y-shaped circuit, the head ends, 3-phase output lines are led out from the tail ends of the 3-phase coils, a wiring cavity is arranged between the bottom of the groove-shaped frame and the iron core coils, a jumper wire, a neutral wire, a sensor outgoing line and a 3-phase coil output line between the 3-phase coils are arranged in the wiring cavity, 3 sensor grooves with different positions are arranged among the I-shaped iron cores, an A-phase Hall sensor, a B-phase Hall sensor and a C-phase Hall sensor are arranged in the sensor grooves, the 3 Hall sensors are all switch-type sensors, the difference between the 3 Hall sensors is 120 degrees in electrical angle, the intelligent controller is provided with a phase change circuit with 120 degrees in electrical angle, the outgoing lines of the 3 Hall sensors are led out downwards through gaps among the iron core coils, 3 vertical linear grooves are erected on the groove-shaped frame, and the outgoing lines of the 3 Hall sensors are led into the wiring cavity through the vertical linear grooves; the strip-shaped brushless permanent magnet linear motor is provided with a strip-shaped magnetic conductive vehicle, the strip-shaped magnetic conductive vehicle is provided with a left side plate, a right side plate and a top plate, the left side plate and the right side plate are magnetic conductive plates made of iron materials, the top plate is a non-magnetic conductive plate made of aluminum alloy materials, the cross section of the top plate is n-shaped, the left side plate, the right side plate and the top plate are connected through screws, the front end of the left side plate is welded with an upper connecting plate and a lower connecting plate, the left end of the upper connecting plate and the left end of the lower connecting plate are welded with a left front axle, the rear end of the left side plate is welded with an upper connecting plate and a lower connecting plate, the left end of the upper connecting plate and the left end of the lower connecting plate are welded with a left rear axle, the front end of the right side plate is welded with an upper connecting plate and a lower connecting plate, the right end of the upper connecting plate and the lower connecting plate are welded with, the left side plate has 4 pulleys rolling on the left track inside the square pipe frame, the right side plate has 4 pulleys rolling on the right track inside the square pipe frame, the front upper ends of the left side plate and the right side plate are provided with front wheel shafts, the left and right front wheel shafts are provided with bearings, the bearings are provided with front left pulley and front right pulley, the front left pulley and the front right pulley roll on the upper track inside the square pipe frame, the back lower ends of the left side plate and the right side plate are provided with back wheel shafts, the left and right back wheel shafts are provided with bearings, the bearings are provided with back left pulley and back right pulley, the back left pulley and the back pulley roll on the lower track inside the square pipe frame, the middle of the upper track of the square pipe frame is provided with a linear groove, the middle top plate of the magnetic conductive vehicle is provided with a push knife plate, the push knife plate is positioned in the linear groove, the upper end of the square pipe frame is provided with a carrier-based vehicle, the lower end of the carrier-based vehicle is provided with a V-shaped rail, the V-shaped rail is bent into a right angle shape, the right-angle point faces the front lower end, the left side and the right side of the upper end of the V-shaped rail are connected with the machine body, the upper end of the propulsion knife board is positioned at the right-angle point of the V-shaped rail, the propulsion knife board pushes the V-shaped rail forwards to drive the shipboard aircraft to accelerate, the shipboard aircraft gradually ascends to take off, and the V-shaped rail slides upwards to the top at the front end of the propulsion knife board and then is separated; the left end face of the left side plate of the strip-shaped magnetic conduction vehicle is provided with a left permanent magnet strip, the left end face of the right side plate of the strip-shaped magnetic conduction vehicle is provided with a right permanent magnet strip, the lengths of the left permanent magnet strip and the right permanent magnet strip are equal to the length of the strip-shaped magnetic conduction vehicle, the widths of the left permanent magnet strip and the right permanent magnet strip are equal to the width of the strip-shaped iron core, the left permanent magnet strip and the right permanent magnet strip are formed by splicing a plurality of square permanent magnets, the polarities of the adjacent square permanent magnets are opposite, the square permanent magnets are strong magnets made of rare earth materials, the front and back lengths of the square permanent magnets are similar to but not equal to the front and back lengths of the I-shaped iron core, the number and the size, the polarities of the aligned left permanent magnet and right permanent magnet are opposite to each other, and the strip-shaped iron core is positioned between the left permanent magnet strip and the right permanent magnet strip to form a left uniform air gap and a right uniform air gap which are equal; the left and right 8 pulleys of the strip-shaped magnetic conduction vehicle are supported on a left rail and a right rail in the square pipe-shaped frame, so that the positions of parallel lines at the left and right ends of the strip-shaped magnetic conduction vehicle are stable when the strip-shaped magnetic conduction vehicle moves back and forth in the square pipe-shaped frame, the left front pulley and the right front pulley are supported on an upper rail in the square pipe-shaped frame, the left rear pulley and the right rear pulley are supported on a lower rail in the square pipe-shaped frame, the pushing knife plate is pushed forward to push the V-shaped blocking rod, the acting force of the left front pulley and the right front pulley is made upward, the acting force of the left rear pulley and the right rear pulley is made downward, and the positions of the lower ends of the upper parallel lines and the lower; a plurality of iron core coils are positioned between a left permanent magnet strip and a right permanent magnet strip to form a closed magnetic field with a plurality of mutually opposite magnetic poles, the plurality of iron core coils are electrified and then automatically form a moving magnetic field to drive a strip-shaped magnetic conduction vehicle through phase change, the left end of a front machine box of the strip-shaped brushless permanent magnet linear motor is provided with a front Hall sensor, the left end of a rear machine box is provided with a rear Hall sensor, the front Hall sensor and the rear Hall sensor are both switch-type sensors, when the strip-shaped magnetic conduction vehicle is accelerated forwards to reach the front end of a square tube-shaped rack, a square permanent magnet at the front end of the left permanent magnet strip is close to the front Hall sensor, the front Hall sensor outputs a signal to an electric brake input end of an intelligent controller, the strip-shaped magnetic conduction vehicle is immediately braked and stopped, then the intelligent controller controls the strip-shaped magnetic conduction vehicle to automatically reverse at a low speed according to a, the rear Hall sensor outputs a signal to an electric brake input end of the intelligent controller, the strip-shaped magnetic conduction vehicle immediately brakes and stops, the propulsion knife board is reset at the rear end of the linear groove, and the next carrier-based aircraft is prepared to take off; the heavy fighter take-off button and the light fighter take-off button are speed regulation type buttons, the output end of the speed regulation type button is connected with the speed regulation input end of the intelligent controller to regulate the driving voltage of the strip-shaped brushless permanent magnet linear motor, the heavy fighter take-off button is provided with an F-shaped short push rod, the light fighter take-off button is provided with an F-shaped long push rod, the middle ends of the long push rod and the short push rod are respectively provided with an upper permanent magnet particle, the lower ends of the long push rod and the short push rod are respectively provided with a lower permanent magnet particle, the upper permanent magnet particle and the lower permanent magnet particle vertically correspond to each other and have opposite polarities, the distance between the upper permanent magnet particle and the lower permanent magnet particle of the long push rod is long, the distance between the upper permanent magnet particle and the lower permanent magnet particle of the short push rod is short, a front pressure regulation Hall sensor is arranged between the upper permanent magnet particle and the, the front and the rear voltage-regulating Hall sensors output different signal voltages according to the change of the strength and the polarity of a magnetic line of force in a changing magnetic field, the take-off button of the heavy fighter and the take-off button of the light fighter are in a static state, the S poles of the lower permanent magnetic particles of the two are close to the front and the rear voltage-regulating Hall sensors by the elasticity of a button spring, the signal voltages output by the front and the rear voltage-regulating Hall sensors are both 0V, when the take-off button of the heavy fighter is pressed, the N pole of the upper permanent magnetic particle is close to the rear voltage-regulating Hall sensor, the signal voltage output by the rear voltage-regulating Hall sensor is 5V, the pressing process of the button is a process of linear change of the signal voltage from 0V to 5V, when the take-off button of the light fighter is pressed, because the distance between the upper permanent magnetic particle and the lower permanent magnetic particle is long, the, the signal voltage output by the front voltage-regulating Hall sensor is 3V, the process of pressing the button is the process of linear change of the signal voltage from 0V to 3V, when the takeoff button of the heavy fighter is pressed, the signal of the speed regulation input end of the intelligent controller is 5V high voltage, the driving voltage of the strip-shaped brushless permanent magnet linear motor is high, the power is large, when a takeoff button of the light fighter is pressed, the signal of the speed regulating input end of the intelligent controller is 3V low voltage, the driving voltage of the strip-shaped brushless permanent magnet linear motor is low, the power is low, when the signal voltage of the speed regulating input end of the intelligent controller is 0V, the strip-shaped brushless permanent magnet linear motor is shut down, and the process that the takeoff button of the heavy fighter or the takeoff button of the light fighter is pressed is the process that the driving voltage of the strip-shaped brushless permanent magnet linear motor is increased from low to high, so that the carrier-based aircraft takes off in a flexible acceleration state, and takes off in an impact state is avoided.

The length of the linear stator is about 5 meters, the stroke of the propulsion knife board is greater than 100 meters, the length of the strip-shaped magnetic conduction vehicle is about 110 meters, the length of the square-tube-shaped rack is greater than 220 meters, the stroke of the propulsion knife board is the accelerated takeoff length of the carrier-based aircraft on the aircraft carrier deck, and the thrust and the acceleration of the propulsion knife board must meet the takeoff requirement of the carrier-based aircraft within the stroke range of the propulsion knife board, so that the driving power of the linear motor is greater than the maximum takeoff power of the carrier-based aircraft, and the final speed of the propulsion knife board is greater than 300 kilometers per hour.

The electromagnetic catapult for the carrier-based aircraft has the beneficial effects that: the linear stator, the left permanent magnet strip and the right permanent magnet strip form a plurality of closed magnetic flux loops with opposite magnetic poles, a plurality of iron core coils of the linear stator are electrified and then automatically phase-changed to form a moving magnetic field to drive the left permanent magnet strip and the right permanent magnet strip, so the strip-shaped brushless permanent magnet linear motor belongs to a dual-drive motor, because two adjacent iron core coils, two adjacent left square permanent magnets and two adjacent right square permanent magnets form a closed magnetic flux loop with a strong magnetic field, the magnetic flux density of an I-shaped iron core is large, the magnetic path of the I-shaped iron core is short, the loss of the coils and the iron core is small, the efficiency and the power of the strip-shaped brushless permanent magnet linear motor are high, the strip-shaped brushless permanent magnet linear motor, the storage battery pack and the intelligent controller which form the aircraft carrier-borne electromagnetic catapult are integrated and concentrated in a square-tube-shaped frame, and the, the square pipe-shaped frame becomes the core of the electromagnetic catapult with a simple sealing structure, so that the whole mechanism is good in protectiveness and high in reliability, the energy storage of the storage battery pack is large, the quantity and the voltage of the storage battery are adjusted, the electric quantity and the power which are necessary when the carrier-based aircraft takes off are met, different take-off buttons are selected according to the size of the carrier-based aircraft, the pressure regulating Hall sensors between the permanent magnetic particles on the F-shaped push rod of the take-off button and the lower permanent magnetic particles are located at different positions, the linear motor generates different thrust, and the electromagnetic catapult with the controllable thrust.

Drawings

Fig. 1 is a schematic diagram of the overall right-view structure of an electromagnetic catapult of a carrier-based aircraft.

Fig. 2 is a schematic diagram of the rear view section structure of the pulleys and the rails at the left and right ends of the strip-shaped magnetic conduction vehicle.

Fig. 3 is a schematic view of a rear section structure of pulleys and rails at the upper and lower ends of a strip-shaped magnetic conduction vehicle.

Fig. 4 is a structural schematic diagram of a carrier-based aircraft in a right view in an electromagnetic catapult takeoff state.

Fig. 5 is a schematic view of the top-down structure of the strip-shaped magnetic conductive vehicle at the rear end of the square tube frame.

Fig. 6 is a schematic view of the front end of the bar-shaped magnetically conductive vehicle inside the square tube frame.

Detailed Description

The following is further described with reference to the accompanying drawings.

In the figures 1-5, a rectangular strip-shaped groove is arranged on a deck 2 of an aircraft carrier 1, the length of the strip-shaped groove is smaller than that of the aircraft carrier deck, a strip-shaped brushless permanent magnet linear motor 3 is arranged in the strip-shaped groove, a plurality of carrier-based aircrafts 4 are arranged on the deck of the aircraft carrier, the carrier-based aircrafts comprise a light fighter and a heavy fighter or an unmanned fighter, an operation room 5 is arranged behind the aircraft carrier deck, an operation table 6 is arranged in the operation room, a takeoff button 7 of the heavy fighter, a takeoff button 8 of the light fighter and a power button 9 are arranged on the operation table, the strip-shaped brushless permanent magnet linear motor is provided with a front case 10 and a rear case 11, an intelligent controller 12 is arranged at the front end in the front case, a front storage battery pack 13 is arranged at the rear end of the intelligent controller, a rear storage battery pack 14 is arranged in the rear case, the front and rear storage batteries are connected, the strip-shaped brushless permanent magnet linear motor is provided with a square tube-shaped frame 15, a left rail 16, a right rail 17, an upper rail 18 and a lower rail 19 are arranged in the square tube-shaped frame, a left connecting edge 20 and a right connecting edge 21 are arranged at the upper end of the square tube-shaped frame, a left mounting edge 22 and a right mounting edge 23 are arranged in a strip-shaped groove, the left and right connecting edges are mounted at the upper ends of the left and right mounting edges, the planes of the left and right connecting edges are consistent with the plane of a deck, after the left and right connecting edges are matched with the left and right mounting edges, the left and right connecting edges are fixed by a plurality of countersunk head screws 24, the length of the square tube-shaped frame is equal to that of the strip-shaped groove, a groove-shaped frame 25 is arranged in the middle of the bottom in the square tube-shaped frame, the groove-shaped frame is made into a long strip by aluminum alloy, a linear stator 26 is arranged at the upper end of the groove-, the first silicon steel sheet at the upper end of the I-shaped iron core is thicker and is provided with an iron core pressing plate 28, the iron core pressing plate is provided with a left screw hole and a right screw hole, a plurality of left screw holes and a plurality of right screw holes are erected on a groove-shaped frame, the left screw holes and the right screw holes are symmetrical left and right, the left screw holes and the right screw holes are all corresponding, the equal distance between the left screw holes and the right screw holes is equal to the length of the front end and the back end of the I-shaped iron core, a plurality of left screws 29 and a plurality of right screws 30 are arranged in the left screw holes and the right screw holes, the left screws and the right screws are slender countersunk head screws, a plurality of left mounting holes and a plurality of right mounting holes are arranged in the middle of the bottom of a square tube frame, the left mounting holes and the right mounting holes are all corresponding to the left screw holes, the right mounting holes are all corresponding to the right screw holes, and the left screws and the right screws pass through the left mounting holes and the right mounting holes in the bottom of the square, the square tube frame, the slot frame, a plurality of I-shaped iron cores and the iron core pressing plate are fastened together through a left screw rod hole and a right screw rod hole of the slot frame, a left nut hole and a right nut hole of the iron core pressing plate, the plurality of I-shaped iron cores are closely arranged into a strip-shaped iron core, the length of the strip-shaped iron core is equal to that of the slot frame, the front end of the strip-shaped iron core is aligned with the rear end of the front machine box, the rear end of the strip-shaped iron core is aligned with the front end of the rear machine box, the bottoms of the front machine box and the rear machine box are respectively fastened in the middle of the bottom of the square tube frame by a front screw 31 and a rear screw 32, an insulating outer sleeve 33 is arranged on the surface of each I-shaped iron core, a plurality of enameled wires are horizontally wound on the insulating outer sleeve to form an iron core coil 34, the plurality of iron core coils are connected into a linear stator, each I-shaped iron core, the angle tips between the I-shaped iron cores are mutually aligned and are next to each other without gaps, the coil windings are sealed in the iron cores to form a slotless linear stator, the slotless linear stator has less magnetic leakage, the tooth noise generated when the linear stator works can be avoided when a magnetic field is reversed, a plurality of iron core coils are averagely divided into 3 coil windings with different phases, the plurality of iron core coils are respectively connected into an A-phase coil, a B-phase coil and a C-phase coil, the electrical angle of the position difference between the 3-phase coils is 120 degrees, each phase coil is formed by connecting a plurality of iron core coils with equal number in series, the winding directions of the adjacent iron core coils are opposite to each other, each phase coil is averagely divided into a plurality of branch coil windings, the number of the 3-phase plurality of branch coil windings is equal, the 3-phase plurality of branch coil windings are mutually crossed at the equally-divided positions, the position of the 3-phase plurality of, the intelligent controller is characterized in that 3-phase coils are connected into a Y-shaped circuit, the head ends of the 3-phase coils are connected into a neutral wire, the tail ends of the 3-phase coils are led out to form 3-phase output wires, a wiring cavity 37 is arranged between the bottom of the groove-shaped frame and the plurality of iron core coils and used for accommodating a jumper wire, the neutral wire, a sensor lead-out wire and the 3-phase coil output wires among the 3-phase coils, 3 sensor grooves with different positions are arranged among the plurality of I-shaped iron cores, an A-phase Hall sensor 38, a B-phase Hall sensor 39 and a C-phase Hall sensor 40 are arranged in each sensor groove, the 3 Hall sensors are all switch-type sensors, the difference between the 3 Hall sensors is 120 degrees in electrical angle, the intelligent controller is provided with a phase-changing circuit with 120 degrees in electrical angle, the lead-out wires of the 3 Hall sensors are led out downwards through gaps among the plurality of iron core coils, the groove-shaped frame is, leading-out wires of the 3 Hall sensors into the wiring cavity through the 3 vertical wire grooves respectively; the strip-shaped brushless permanent magnet linear motor is provided with a strip-shaped magnetic conductive vehicle, the strip-shaped magnetic conductive vehicle is provided with a left side plate 42, a right side plate 43 and a top plate 44, the left side plate and the right side plate are magnetic conductive plates made of iron materials, the top plate is a non-magnetic conductive plate made of aluminum alloy materials, the cross section of the top plate is n-shaped, the left side plate, the right side plate and the top plate are connected through screws, the front end of the left side plate is welded with an upper connecting plate and a lower connecting plate, the left end of the upper connecting plate and the left end of the lower connecting plate are welded with a left front axle, the rear end of the left side plate is welded with an upper connecting plate 45 and a lower connecting plate 46, the left end of the upper connecting plate and the left end of the lower connecting plate are welded with a left rear axle 47, the front end of the right side plate is welded with an upper connecting plate and a lower connecting plate, the left end of the upper connecting plate and, pulleys 52 are arranged on the outer circles of the 8 bearings, 4 pulleys of the left side plate roll on a left rail in the square pipe-shaped frame, 4 pulleys of the right side plate roll on a right rail in the square pipe-shaped frame, front wheel shafts 53 are arranged at the front upper ends of the left side plate and the right side plate, bearings 54 are arranged on the left front wheel shaft and the right front wheel shaft, a left front pulley 55 and a right front pulley 56 are arranged on the bearings, the left front pulley and the right front pulley roll on an upper rail in the square pipe-shaped frame, rear wheel shafts 57 are arranged at the rear lower ends of the left side plate and the right side plate, bearings 58 are arranged on the left rear wheel shaft and the right rear wheel shaft, a left rear pulley 59 and a right rear pulley 60 are arranged on the bearings, the left rear pulley and the right rear pulley roll on a lower rail in the square pipe-shaped frame, a linear groove 61 is arranged in the middle of the upper rail of the square pipe-shaped frame, a propulsion knife plate 62 is arranged in the middle of a top plate of the linear groove, a carrier-carrying machine is arranged at the upper, the lower end of the carrier-based aircraft is provided with a V-shaped rail 63 which is bent into a right-angle shape by using steel bars, the right-angle point of the V-shaped rail faces the front lower end, the left side and the right side 64 of the upper end of the V-shaped rail are connected with the aircraft body, the upper end of a propelling knife board is positioned at the right-angle point of the V-shaped rail, the propelling knife board pushes the V-shaped rail forwards to drive the carrier-based aircraft to accelerate, the carrier-based aircraft gradually rises to take off, and the V-shaped rail slides upwards at the front end of; the left end face of the left side plate of the strip-shaped magnetic conduction vehicle is provided with a left permanent magnet strip 65, the left end face of the right side plate is provided with a right permanent magnet strip 66, the lengths of the left and right permanent magnet strips are equal to the length of the strip-shaped magnetic conduction vehicle, the widths of the left and right permanent magnet strips are equal to the width of the strip-shaped iron core, the left and right permanent magnet strips are formed by splicing a plurality of square permanent magnets 67, the polarities of the adjacent square permanent magnets are opposite, the square permanent magnets are strong magnets made of rare earth materials, the front and back lengths of the square permanent magnets are similar to but not equal to the front and back lengths of the I-shaped iron core, the number and the size of the square permanent magnets of the left permanent magnet strip and the right permanent magnet strip are equal, the polarities of the aligned left permanent magnet and right permanent magnet are opposite to each other, and the strip-shaped iron core is positioned between the left permanent magnet strip and the right permanent magnet strip to form a left uniform air gap 68 and a right uniform air gap 69 which are equal; the left and right 8 pulleys of the strip-shaped magnetic conduction vehicle are supported on the left rail and the right rail in the square pipe-shaped frame, so that when the strip-shaped magnetic conduction vehicle moves back and forth in the square pipe-shaped frame, the positions of parallel lines at the left and right ends of the vehicle body are stable, the left front pulley and the right front pulley are supported on the upper rail in the square pipe-shaped frame, the left rear pulley and the right rear pulley are supported on the lower rail in the square pipe-shaped frame, the pushing knife plate pushes the V-shaped blocking rod forwards, the acting force of the left front pulley and the right front pulley is upwards, the acting force of the left rear pulley and the right rear pulley is downwards, and when the strip-shaped magnetic conduction vehicle moves forwards in the square pipe-shaped frame, the positions of the parallel lines at; a plurality of iron core coils are positioned between a left permanent magnet strip and a right permanent magnet strip to form a closed magnetic field with a plurality of mutually opposite magnetic poles, the plurality of iron core coils are electrified and then form a moving magnetic field to drive a strip-shaped magnetic conduction vehicle through automatic phase change, the left end of a front machine box of the strip-shaped brushless permanent magnet linear motor is provided with a front Hall sensor 70, the left end of a rear machine box is provided with a rear Hall sensor 71, the front Hall sensor and the rear Hall sensor are both switch-type sensors, when the strip-shaped magnetic conduction vehicle accelerates forwards to reach the front end of a square tube-shaped rack, a square permanent magnet at the front end of the left permanent magnet strip is close to the front Hall sensor, the front Hall sensor outputs a signal to an electric brake input end of an intelligent controller, the strip-shaped magnetic conduction vehicle brakes and stops immediately, then the intelligent controller controls the strip-shaped magnetic conduction vehicle to automatically reverse at a low speed according to a set program, the rear Hall sensor outputs a signal to an electric brake input end of the intelligent controller, the strip-shaped magnetic conduction vehicle immediately brakes and stops, the propulsion knife board is reset at the rear end of the linear groove, and the next carrier-based aircraft is prepared to take off; the heavy fighter takeoff button and the light fighter takeoff button are speed-regulating buttons, the output end of the speed-regulating button is connected with the speed-regulating input end of the intelligent controller, the speed-regulating button regulates the driving voltage of the strip-shaped brushless permanent magnet linear motor, the heavy fighter takeoff button is provided with an F-shaped short push rod 72, the light fighter takeoff button is provided with an F-shaped long push rod 73, the middle ends of the long push rod and the short push rod are respectively provided with an upper permanent magnet particle 74, the lower ends of the long push rod and the short push rod are respectively provided with a lower permanent magnet particle 75, the upper permanent magnet particles and the lower permanent magnet particles vertically correspond to each other and have opposite polarities, the distance between the upper permanent magnet particles and the lower permanent magnet particles of the long push rod is long, the distance between the upper permanent magnet particles and the lower permanent magnet particles of the short push rod is short, a front voltage-regulating Hall sensor 76 is arranged between the upper permanent magnet particles and the lower permanent magnet particles of the, the front and rear voltage-regulating Hall sensors are positioned in a variable magnetic field between an N pole and an S pole, and output signal voltages with different heights according to the change of the strength and the polarity of a magnetic line of force, the take-off button of the heavy fighter and the take-off button of the light fighter are in a static state, the S pole of the lower permanent magnetic particle of the heavy fighter and the take-off button of the light fighter are close to the front and rear voltage-regulating Hall sensors by the elasticity of a button spring, the signal voltages output by the front and rear voltage-regulating Hall sensors are both 0V, when the take-off button of the heavy fighter is pressed, the N pole of the upper permanent magnetic particle is close to the rear voltage-regulating Hall sensor, the signal voltage output by the rear voltage-regulating Hall sensor is 5V, the pressing process of the button is a linear change process of the signal voltage from 0V to 5V, when the take-off button of the light fighter is pressed, therefore, the signal voltage output by the front voltage-regulating Hall sensor is 3V, the process of pressing the button is the process of linear change of the signal voltage from 0V to 3V, when the takeoff button of the heavy fighter is pressed, the signal of the speed-regulating input end of the intelligent controller is 5V high voltage, the driving voltage of the strip-shaped brushless permanent magnet linear motor is high, the power is high, when the takeoff button of the light fighter is pressed, the signal of the speed-regulating input end of the intelligent controller is 3V low voltage, the driving voltage of the strip-shaped brushless permanent magnet linear motor is low, the power is low, when the signal voltage of the speed-regulating input end of the intelligent controller is 0V, the strip-shaped brushless permanent magnet linear motor is shut down, the process of pressing the takeoff button of the heavy fighter or the takeoff button of the light fighter is the process of driving voltage of the strip-shaped brushless permanent magnet linear motor from low to high, the takeoff under the impact state is avoided.

The length of the linear stator is about 5 meters, the stroke of the propulsion knife board is greater than 100 meters, the length of the strip-shaped magnetic conduction vehicle is about 110 meters, the length of the square-tube-shaped rack is greater than 220 meters, the stroke of the propulsion knife board is the accelerated takeoff length of the carrier-based aircraft on the aircraft carrier deck, and the thrust and the acceleration of the propulsion knife board must meet the takeoff requirement of the carrier-based aircraft within the stroke range of the propulsion knife board, so that the driving power of the linear motor is greater than the maximum takeoff power of the carrier-based aircraft, and the final speed of the propulsion knife board is greater than 300 kilometers per hour.

The linear stator, the left permanent magnet strip and the right permanent magnet strip form a plurality of closed magnetic flux loops with opposite magnetic poles, a plurality of iron core coils of the linear stator are electrified and then automatically phase-changed to form a moving magnetic field to drive the left permanent magnet strip and the right permanent magnet strip, so the strip-shaped brushless permanent magnet linear motor belongs to a dual-drive motor, because two adjacent iron core coils, two adjacent left square permanent magnets and two adjacent right square permanent magnets form a closed magnetic flux loop with a strong magnetic field, the magnetic flux density of an I-shaped iron core is large, the magnetic path of the I-shaped iron core is short, the loss of the coils and the iron core is small, the efficiency and the power of the strip-shaped brushless permanent magnet linear motor are high, the strip-shaped brushless permanent magnet linear motor, the storage battery pack and the intelligent controller which form the electromagnetic catapult of the carrier-borne aircraft carrier are integrated in a square-tube-shaped frame, the square-, the square pipe-shaped frame becomes the core of the electromagnetic catapult with a simple sealing structure, so that the whole mechanism is good in protectiveness and high in reliability, the energy storage of the storage battery pack is large, the quantity and the voltage of the storage battery are adjusted, the electric quantity and the power which are necessary when the carrier-based aircraft takes off are met, different take-off buttons are selected according to the size of the carrier-based aircraft, the pressure regulating Hall sensors between the permanent magnetic particles on the F-shaped push rod of the take-off button and the lower permanent magnetic particles are located at different positions, the linear motor generates different thrust, and the electromagnetic catapult with the controllable thrust.