Helicopter flight training simulation platform

Abstract

The application provides a helicopter flight training simulation platform, which comprises a base, a lifting system, a rotating system, a cockpit, a training simulation control system and a display screen group. The cockpit is arranged above the rotating system and is integrally installed with the rotating system and is located above the lifting system. The rotating system drives the cockpit to rotate horizontally. The lifting system drives the rotating system and the cockpit to move in a pitching attitude. The cockpit is internally provided with a driving seat, control components and a flight training control interface. Through operation of the control components and input of control instructions on the flight training control interface, the training simulation control system controls operation of the simulation platform, so that the cockpit rotates horizontally, moves horizontally and moves in a combined attitude of pitching and yawing. The application can simulate training of user driving a helicopter, provide gravity simulation feedback feeling and realize omnidirectional, high-performance simulation and realistic simulation effect.

Description

Technical Field

[0001] This invention relates to the field of flight simulator processing technology, and more specifically to a helicopter flight training simulation platform. Background Technology

[0002] Flight simulators are the primary means of training and simulating pilots under non-realistic ground conditions. By simulating flight in a semi-physical environment, they enable pilots to understand and respond to the aircraft, flight status, and flight environment before actual flight, and obtain operational data of the aircraft under different conditions. On the one hand, this improves pilots' understanding of the aircraft and familiarizes them with flight operations, which is beneficial to the handling stability and safety of actual flight when dealing with complex airspace, weather, and environmental conditions. On the other hand, the data obtained through flight simulation can be further used for aircraft performance testing and research.

[0003] Currently, the design of high-level flight training simulators at home and abroad is mostly based on six-degree-of-freedom motion platforms. Through the platform's composite attitude control and motion simulation within the spatial range, the roll, pitch and other operations of the aircraft are simulated. However, helicopters move differently from traditional fixed-wing aircraft and sport aircraft, and traditional simulators based on six-degree-of-freedom platforms cannot realize the flight training simulation of helicopters.

[0004] Furthermore, the flight simulation software provided in the laboratory can only simulate digital quantities such as the aircraft's flight attitude, angular velocity, acceleration, and throttle status. It conducts simulation training through mathematical simulation. Pilots sitting in the seat cannot perceive the motion process and attitude changes during actual helicopter flight. Without actual force feedback during flight, it is impossible to achieve realistic flight training simulation. Summary of the Invention

[0005] The purpose of this invention is to provide a helicopter flight training simulation platform that can simulate the piloting process of a helicopter for training users and provide gravity simulation feedback, thereby achieving omnidirectional, high-performance simulation and realistic simulation effects.

[0006] According to a first aspect of the present invention, a helicopter flight training simulation platform is provided, comprising a base, a lifting system, a slewing system, a cockpit, a training simulation control system, and a display screen assembly; the lifting system, the slewing system, and the cockpit are integrally supported above the base;

[0007] The cockpit is located above the slewing system and is integrally installed with the slewing system. It is also located above the lifting system and is supported by the lifting system.

[0008] The slewing system is used to provide rotational drive in the horizontal direction, enabling the cockpit to rotate in the horizontal direction;

[0009] The lifting system is implemented using multiple linear actuators capable of linear displacement in the vertical direction, which are used to drive the rotation system and the cockpit as a whole to perform pitch and yaw motion.

[0010] The cockpit is equipped with a pilot's seat for training users, control components for training users to operate, and a flight training control interface. By operating the control components and inputting control commands on the flight training control interface, the training simulation control system controls the operation of the simulation platform to achieve simulation of the cockpit's combined attitude motions, including horizontal rotation, horizontal movement, and pitch and yaw.

[0011] The display screen group is electrically connected to the training simulation control system and is used to provide visual feedback on the flight simulation process, including loading and displaying flight training scenarios, as well as visual feedback on the flight simulation control status and flight simulation motion status during the flight simulation process.

[0012] As an optional embodiment, the cockpit is provided with a frame structure, and the driver's seat is installed at the bottom of the frame structure; the cockpit is installed on the slewing system through the frame structure and forms an integral part therewith.

[0013] As an optional embodiment, the display screen assembly is a single unit composed of multiple display screens spliced ​​together and is installed in front of the frame structure, positioned directly opposite the driver's seat. The display screen assembly is integrated with the frame structure and can move synchronously with the frame structure.

[0014] As an optional embodiment, the lifting system includes multiple sets of linear drives of the same specifications installed between the base and the slewing system. When the platform is in the initial position, the slewing system remains parallel to the circular base of the base and is in a horizontal state, and is precisely calibrated by a multi-point level.

[0015] As an optional embodiment, each set of linear actuators is mounted on a circular base perpendicular to the base, and each set of linear actuators is designed to perform linear displacement in the vertical direction, including telescopic movement. Through the linkage control of linear actuators configured in different positions, the attitude simulation of the rotary system supported by the linear actuators is realized.

[0016] As an optional embodiment, the linear actuator is mounted between the base and the rotary system in a manner that is uniformly arranged in the circumferential direction.

[0017] As an optional embodiment, the rotary system supported by the lifting system includes:

[0018] The lower fixed plate and the upper rotating plate are designed to fit each other in shape; the bottom of the lower fixed plate is supported by a lifting system.

[0019] The drive motor is mounted and fixed at the bottom of the lower fixed plate;

[0020] The output shaft of the drive motor passes through the lower fixed plate via a bearing and is connected to the bottom center of the upper rotating plate, thereby driving the upper rotating plate to rotate relative to the lower fixed plate.

[0021] As an optional embodiment, a groove is provided along the circumferential direction at the edge position of the upper surface of the lower fixed plate. The groove is annular, and multiple arc-shaped sliders are embedded in the groove. The sliders are limited and guided by the groove and can rotate freely within the groove.

[0022] The top of each slider is connected to the bottom of the upper rotating plate, so that the two are relatively fixed.

[0023] As an optional embodiment, the upper surface of the upper rotating plate is further provided with a horizontal moving frame, and a pair of narrow track grooves are provided on the edges of the horizontal moving frame, with a fixed smooth track provided in the track grooves;

[0024] Along each track, there are multiple movable support blocks that are fitted or spanned across the smooth track. The multiple movable support blocks are evenly arranged to support and fix the frame structure of the cockpit.

[0025] At least one of the plurality of movable support blocks can be driven by a first electric linear actuator to move on the track surface.

[0026] As an optional embodiment, the cockpit is equipped with a gravity simulation system, which is mounted on the pilot's seat to simulate gravity feedback during helicopter piloting simulation training.

[0027] As an optional embodiment, the gravity simulation system includes a safety harness for training users to wear, a drive box component, and a pull cord driven by the drive box component;

[0028] One end of the pull cord is connected to the drive box component, and the other end is fixedly connected to the safety harness.

[0029] The bottom of the safety harness is closed, with five holes for the head, hands, and feet, for training users to wear. The harness provides traction and controls the body's posture through the combination of the drive box component and the pull rope.

[0030] As an optional embodiment, the drive box component and the pull rope are combined and arranged in a one-to-one correspondence as a set of gravity simulation components;

[0031] The driver's seat is equipped with gravity simulation components at multiple locations, including drive box components on the top of the backrest, the two sides of the backrest, and the two sides of the bottom of the backrest, which are used to drive the corresponding pull ropes to perform stretching or retraction movements.

[0032] The corresponding pull cords pass through pulleys and are connected to the corresponding positions of the safety harness, including the top of the back of the safety harness, the upper parts of both sides of the back, and the bottom of both sides of the safety harness.

[0033] By placing the drive box components in different positions, the direction of force transmission of the pull rope is controlled by utilizing its positional characteristics, thereby achieving the effect of a safety harness worn by the training user and simulating the feeling of gravity.

[0034] As an optional embodiment, the drive box component is provided with a second electric linear actuator and a traction block inside; the end of the motion guide rod of the second electric linear actuator is fixed to the traction block, and the upper end of the traction block is connected to one end of a pull rope that cooperates with it; the pull rope passes through the housing of the drive box component and is connected to the traction block.

[0035] Therefore, by controlling the extension and retraction of the second electric linear actuator to drive the reciprocating motion of the traction block, the traction and stretching effect on the corresponding pull rope that cooperates with the drive box component is realized.

[0036] The helicopter flight training simulation platform proposed in this invention integrates a lift system, a slewing system, a cockpit, and a training simulation control system, providing trainees with a comprehensive flight training environment capable of simulating helicopter motion in different attitudes. The slewing system enables the cockpit to rotate horizontally, while the lift system drives the slewing system and the cockpit as a whole to pitch and yaw. Combined with longitudinal displacement in the horizontal direction, it can highly replicate the attitude changes of a helicopter in actual flight, allowing trainees to experience a realistic flight and thus improving training effectiveness.

[0037] The cockpit features a pilot's seat for training users, control components for training users to operate, and a flight training control interface. Users can control the platform's operation by manipulating the control components and inputting commands on the control interface, enhancing the realism of training, adapting to different training needs, and improving flight response capabilities and reaction speed.

[0038] Meanwhile, the gravity simulation system designed into the cockpit provides trainees with a more realistic sense of gravity feedback, greatly enhancing the realism of the training and helping them better adapt to gravity changes during actual flight. Through the combination of the designed safety harness, drive box components, and pull ropes, as well as the control of traction force on different parts of the body, the system can accurately simulate the effects of gravity on a helicopter in various flight attitudes, making the training more realistic. By positioning the drive box components in different locations and utilizing their positional characteristics to control the direction of force transmission on the pull ropes, the system can control the effect of the safety harness at different positions. Through meticulous design, the direction and intensity of the gravity simulation can be adjusted according to actual needs, meeting the requirements of different training scenarios.

[0039] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below may be considered part of the inventive subject matter of this disclosure, provided that such concepts do not contradict each other. Furthermore, all combinations of the claimed subject matter are considered part of the inventive subject matter of this disclosure.

[0040] The foregoing and other aspects, embodiments, and features of the teachings of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0041] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings.

[0042] Figure 1 This is a schematic diagram of the structure of a helicopter flight training simulation platform according to an embodiment of the present invention.

[0043] Figure 2 This is a schematic diagram of the helicopter flight training simulation platform according to an embodiment of the present invention from another perspective.

[0044] Figure 3 This is a schematic diagram of the cockpit of a helicopter flight training simulation platform according to an embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the motion system of a helicopter flight training simulation platform according to an embodiment of the present invention, including a lifting system and a rotation system.

[0046] Figure 5This is a schematic diagram of the horizontal movement frame of a helicopter flight training simulation platform according to an embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the gravity simulation system of a helicopter flight training simulation platform according to an embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the drive box component of a helicopter flight training simulation platform according to an embodiment of the present invention.

[0049] Figure 8 This is a control principle diagram of a helicopter flight training simulation platform according to an embodiment of the present invention. Detailed Implementation

[0050] To better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0051] Various aspects of the invention are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily intended to encompass all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed herein are not limited to any particular implementation. Furthermore, some aspects of the invention disclosed may be used alone or in any suitable combination with other aspects of the invention disclosed.

[0052] Helicopter flight training simulation platform

[0053] If combined with appendix Figure 1 , 2 As shown in Figures 3 and 8, the helicopter flight training simulation platform, as an example, includes a base 100, a lifting system 200, a slewing system 300, a cockpit 400, a training simulation control system 500, a display screen group 600, a communication module interface 700, and a power system 1000.

[0054] The base 100, serving as the mounting base for the entire platform, is specifically installed on a level foundation surface to support and maintain the stability of the platform. The base 100 is constructed from high-strength steel, and its bottom is fixed to the ground to ensure the overall stability of the equipment. Figure 1 In the example shown, the base 100 is designed with a circular base (diameter between 1.5 and 3 m) and a protective portion extending upward from the edge of the circular base. The diameter of the circular base is designed to be between 1.5 and 3 m, and the height of the protective portion is approximately 10 to 30 cm, which can be determined according to the actual simulation scenario.

[0055] like Figure 1 , 2 In the examples of 3 and 8, the cockpit 400 is equipped with a pilot's seat 420 for training users, control components 430 for training users to operate, and a flight training control interface 440. The training users control the operation of the simulation platform through the training simulation control system 500 by operating the control components and inputting control commands on the flight training control interface, thereby realizing flight simulation training.

[0056] It should be understood that the control components 430 include a cyclic pitch lever, a yaw pedal, and a throttle collective pitch lever, all of which are electrically connected to the training simulation control system 500. The training simulation control system 500 sends the operator's commands to the control components to the training simulation control system 500, which then controls the actions of the simulation platform, including the simulation of compound attitude motions such as horizontal rotation, horizontal movement, and pitch and yaw.

[0057] As an example, the display panel 600 can be composed of multiple displays spliced ​​together, such as a combination of liquid crystal driven displays like LEDs or LCDs, and electrically connected to the training simulation control system 500 to provide visual feedback on the flight simulation process, including the loading and display of flight training scenarios, as well as visual feedback on the flight simulation control status and flight simulation motion status during the flight simulation process.

[0058] Combined with appendix Figure 1 , 2 As shown in the example, the cockpit 400 is positioned above the slewing system 300 and is integrally installed with the slewing system 300, and is located above the lifting system 200 and supported by the lifting system 200.

[0059] Combined with appendix Figure 1 As shown, the cockpit 400 is provided with a frame structure 410, and the driver's seat 420 is installed at the bottom of the frame structure 410. The cockpit 400 is installed on the slewing system 300 through the frame structure 410 and forms an integral part therewith.

[0060] As an example, the display assembly 600 is mounted in front of the frame structure 410 and positioned directly opposite the driver's seat 420. The display assembly 600 is integrated with the frame structure 410 and can move synchronously with the frame structure 410.

[0061] The slewing system 300 provides a horizontal rotation drive, enabling the cockpit 400 to rotate in the horizontal direction.

[0062] The lifting system 200 is implemented by multiple linear actuators that can make linear displacement in the vertical direction, which are used to drive the slewing system 300 and the cockpit 400 to make pitch and yaw motion as a whole.

[0063] Therefore, by training the simulation control system 500 to control the movement of the aforementioned lifting system 200 and slewing system 300, the composite attitude motion simulation control of the cockpit 400 in the spatial range, including horizontal rotation, horizontal movement, and pitch and yaw, is realized, thereby achieving multi-degree-of-freedom motion simulation of the helicopter.

[0064] Combined with appendix Figure 1 As shown, the lifting system 200, the slewing system 300, and the cockpit 400 are supported as a whole on the base 100, and multiple linear drives of the lifting system 200 are installed in the position space defined by the base 100.

[0065] As an example, the communication module interface 700 is used to communicate with the host computer, including receiving training simulation tasks from the host computer, and reporting training simulation process data and assessment data to the host computer.

[0066] As an example, the power system 1000 is used to supply power to various parts of the platform, including the lifting system 200, the slewing system 300, the cockpit 400, the training simulation control system 500, the display screen group 600, and the communication module interface 700.

[0067] Lifting system

[0068] like Figure 1 , 3 In the embodiment shown in Figure 4, the lifting system 200 includes multiple sets of linear actuators 210 of the same specifications installed between the base 100 and the rotary system 300. When the platform is in its initial position, the rotary system 300 remains parallel to the circular base of the base 100 and is in a horizontal state, which can be precisely calibrated by a multi-point level.

[0069] Each set of linear actuators 210 is mounted on a circular base perpendicular to the base 100. Each set of linear actuators 210 is designed to make linear displacement in the vertical direction, including telescopic movement. Through the linkage control of linear actuators 210 configured in different positions, the attitude simulation of the rotary system 300 supported by the linear actuators 210 is realized.

[0070] As an optional embodiment, the linear actuator 210 is mounted between the base 100 and the rotary system 300 in a uniformly arranged manner in the circumferential direction. In some examples, to maintain the stability of platform operation and to simulate multi-degree-of-freedom composite attitude positions, the linear actuator 210 is implemented as a linear electric cylinder or an electro-hydraulic servo cylinder. Existing commercial linear electric cylinders or electro-hydraulic servo cylinders can be used, which have a cylinder body as a fixed part and a motion guide rod that can extend and retract from the cylinder body. The end of the motion guide rod is hinged to the rotary system 300, and the bottom of the cylinder body is hinged to the upper surface of the circular base of the base 100 to realize multi-degree-of-freedom motion simulation.

[0071] In some examples, the aforementioned linear actuator 210 is configured with at least 6 groups, and corresponding angles are adapted through kinematic control, thereby ensuring the safe and stable operation of the platform.

[0072] In some examples, the aforementioned linear actuator 210 is arranged in a parallel Stewart configuration to achieve motion control with high load capacity and high positional accuracy.

[0073] Slewing system

[0074] Combined with appendix Figure 1 , 4 As shown, the slewing system 300, supported by the lifting system 200, is designed to provide the cockpit 400 with horizontal rotation capability. As an example, the slewing system 300 has a lower fixed plate 310 and an upper rotating plate 320, designed to fit each other. The upper rotating plate 320 is capable of rotating relative to the lower fixed plate 310.

[0075] As attached Figure 4 As shown, both the lower fixed plate 310 and the upper rotating plate 320 adopt a circular design.

[0076] A drive motor 330 is mounted and fixed at the bottom of the lower fixed plate 310. The output shaft of the drive motor 330 passes through the lower fixed plate 310 through a bearing and is connected to the bottom center of the upper rotating plate 320, which is used to drive the upper rotating plate 320 to rotate relative to the lower fixed plate 310.

[0077] At the edge of the upper surface of the lower fixed plate 310, a groove 312 is provided along the circumferential direction. The groove 312 is annular, and multiple arc-shaped sliders 311 are embedded in the groove 312. The sliders are limited and guided by the groove 312 and can rotate freely within the groove 312.

[0078] The top of each slider 311 is connected to the bottom of the upper rotating plate 320 by fasteners such as bolts, so that the two are relatively fixed. Thus, the upper rotating plate 320 is supported by multiple sliders 311 and is located above the lower fixed plate 310. It is limited in the horizontal direction by the sliding groove 312, and the lower fixed plate 310 is limited in the vertical direction by the output shaft of the drive motor 330, so that it does not jump up and down and disengage from the sliding groove limit.

[0079] As a preferred example, the drive motor 330 is a stepper motor, with a matching motor driver for high-precision driving.

[0080] Combined with appendix Figure 4 As shown, the bottom of the lower fixed plate 310 is supported by the lifting system 200, specifically by the linear actuator 210. The end of the motion guide rod of each linear actuator 210 is connected to the bottom of the lower fixed plate 310 through a hinge.

[0081] As an example, the sliders 311 are designed to be arranged in pairs, such as 4 sliders, 6 sliders, etc., so that the load of the upper rotating plate 320 and the cockpit it carries is evenly applied to the lower fixed plate 310 through multiple sliders 311 and supported by the lower fixed plate 310.

[0082] Combined with appendix Figure 4 , 5 In the example, the upper surface of the upper rotating plate 320 is also provided with a horizontal moving frame 350, which is fixed to the upper surface of the upper rotating plate 320.

[0083] A pair of narrow track grooves are provided on the edges of the horizontal moving frame 350, and a fixed smooth track 353 is provided in the track groove. The smooth track 353 has a smooth surface and low friction.

[0084] Along each smooth track 353, a plurality of movable support blocks 352 are provided, which are sleeved or spanned across the smooth track 353. At least one of the plurality of movable support blocks 352 can be driven by a first electric linear actuator 351 to move on the surface of the smooth track 353.

[0085] Multiple movable support blocks 352 are evenly arranged to support and fix the frame structure 410 of the cockpit 400. The multiple movable support blocks 352 move synchronously to drive the cockpit 400 and the frame structure 410 to move synchronously.

[0086] In another embodiment, the track groove of the horizontal moving frame 350 may also be designed to support and drive the frame structure 410 of the cockpit 400 with other suitable drive mechanisms, including, for example, a linear motor.

[0087] It should be understood that the track groove of the horizontal moving frame 350 and the smooth track 353 are both designed along the longitudinal direction, so that the cockpit can move back and forth in the longitudinal direction.

[0088] Therefore, by using the horizontal moving frame 350, combined with the lifting and lowering of the lifting system, the vertical up and down movement of the cockpit is simulated, providing the cockpit with horizontal forward and backward movement.

[0089] Cockpit

[0090] Combined with appendix Figure 1 , 8 For example, cockpit 400 is used to provide seating space and flight simulation control for users undergoing flight simulation training.

[0091] As an example, the cockpit 400 is supported by a frame structure 410. Within the frame structure 410, a pilot's seat 420 for training users, control components 430 for training users, and a flight training control interface 440 are installed. A display screen group 600 is positioned directly in front of the pilot's seat 420 and is electrically connected to the training simulation control system 500 to enable data interaction.

[0092] The training user controls the simulation platform through the training simulation control system 500 by operating the control components and inputting control commands on the flight training control interface, thereby achieving flight simulation training.

[0093] Gravity simulation system

[0094] Combined with appendix Figure 1 , 6 As shown in Figures 7 and 8, a gravity simulation system 450 is also installed in the cockpit 400, which is mounted on the driver's seat 410.

[0095] As an example, the gravity simulation system 450 includes a safety harness 451 for training users to wear, a drive box component 422, and a pull cord 453 driven by the drive box component 422. The pull cord 453 is made of high-strength, high-toughness fiberglass rope, with one end connected to the drive box component 422 and the other end fixedly connected to the safety harness 451.

[0096] The safety harness 451, which is worn by the training user, is equivalent to a seat belt component. It is worn by the training user after entering the driver's seat. The safety harness 451 binds the training user to the driver's seat, and plays a role in safety protection and gravity simulation.

[0097] As an example, the safety harness 451 has a slit and a zipper at the front end, with the slit opening and closing via the zipper. The training user wears the safety harness 451 through the slit. The bottom of the safety harness 451 is closed, with five holes for the head, hands, and feet, for the training user to wear. The purpose is to provide traction to control the posture of the human body through the combined action of the drive box component 422 and the pull cord 453.

[0098] It should be understood that the safety harness 451 illustrated is intended to show the general structure of the safety harness 451. It requires five holes for the head, hands, and feet for the user to wear, and can be designed in a way that facilitates wearing, including the aforementioned zippers, buckles, pins, and other suitable methods for wearing and securing. The positions of the head, hands, and legs in the illustration are merely examples and can be adjusted in position and size according to the design. Preferably, the safety harness 451 is made of high-strength, high-toughness, and lightweight materials such as polyester, acrylic, etc.

[0099] The drive box component 422 and the pull rope 453 are combined and arranged in a one-to-one correspondence as a set of gravity simulation components.

[0100] As an example, corresponding to the positions of the human head, upper limbs and lower limbs, the aforementioned driver's seat 410 is provided with gravity simulation components at multiple positions, including drive box components 422 on the top back, the two sides of the back, and the two sides of the bottom back of the driver's seat 410, respectively, to drive the corresponding pull ropes 453 to perform stretching or retraction movements to simulate the feeling of gravity.

[0101] The corresponding pull ropes 453 pass through pulleys 453 and are connected to the corresponding positions of the safety harness 451, including the top of the back of the safety harness 451, the upper parts of both sides of the back, and the bottom of both sides of the safety harness 451.

[0102] Therefore, by setting the drive box component 452 in different positions, its positional characteristics are used to control the direction of force transmission of the pull rope, thereby achieving the effect of the safety harness 451 worn by the training user and simulating the feeling of gravity.

[0103] Combined with appendix Figure 7 As shown, the drive box component 452 contains a second electric linear actuator 452A and a traction block 452B. The traction block 452B is fixed to the end of the motion guide rod of the second electric linear actuator 452A, and the upper end of the traction block 452B is connected to one end of a pull rope 453 that cooperates with it. In the example shown, the pull rope 453 passes through the housing of the drive box component 452 and is connected to the traction block 452B.

[0104] Thus, by controlling the extension and retraction of the second electric linear actuator 452A to drive the reciprocating motion of the traction block 452B, the traction and stretching effect on the corresponding pull rope 453 that cooperates with the drive box component 452 is realized.

[0105] Therefore, based on the lifting motion control provided by the lifting system 200, and in conjunction with the rotation system 300 and / or the horizontal moving frame 350 driving the cockpit 400, the gravity simulation system can simulate the real gravity feedback feeling brought about by the change of flight attitude during flight.

[0106] As an example, when a training user controls the aircraft to push forward and ascend, the pull rope located in the opposite direction of the acceleration direction is tightened. That is, the second electric linear actuator 452A in the corresponding direction drives the traction block 452B to move and tighten the pull rope, so that the safety harness 451 provides a sense of gravity feedback towards the rear and downward.

[0107] Similarly, when training users to control the aircraft to perform other motions, the pull rope located in the opposite direction of the acceleration direction will be tightened. That is, the second electric linear actuator 452A in the corresponding direction will drive the traction block 452B to move and tighten the pull rope, so that the safety harness 451 provides the corresponding gravity feedback feeling.

[0108] In an optional example, the greater the acceleration, the greater the tension, meaning the greater the linear displacement of the traction block 452B driven by the second electric linear actuator 452A. That is, in the gravity feedback design provided by the gravity simulation system, the linear displacement of the traction block 452B driven by the second electric linear actuator 452A is directly proportional to the acceleration of the training user's helicopter control. As an optional example, this proportionality is designed to vary linearly.

[0109] In some examples, as the acceleration decreases, the linear displacement of the corresponding second electric linear actuator 452A driving the traction block 452B decreases linearly, and the pull rope retracts accordingly, thereby reducing the tension on the safety harness 451 and providing a linear simulation feel.

[0110] As an optional implementation, the movement limit and guidance of the traction block 452B can be achieved by providing a slot inside the drive box component 452 that cooperates with the traction block 452B.

[0111] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A helicopter flight training simulation platform, characterized in that, It includes a base, a lifting system, a slewing system, a cockpit, a training simulation control system, and a display screen assembly; the lifting system, slewing system, and cockpit are all supported on top of the base. The cockpit is equipped with a frame structure, which is installed above the slewing system and integrated with it. The cockpit is located above the lifting system and is supported by the lifting system. The slewing system is used to provide rotational drive in the horizontal direction, enabling the cockpit to rotate in the horizontal direction; The lifting system is implemented using multiple linear actuators capable of linear displacement in the vertical direction, which are used to drive the rotation system and the cockpit as a whole to perform pitch and yaw motion. The cockpit is equipped with a pilot's seat for training users, control components for training users to operate, and a flight training control interface. By operating the control components and inputting control commands on the flight training control interface, the training user controls the operation of the simulation platform through the training simulation control system, realizing the simulation of the cockpit's composite attitude motions of horizontal rotation, horizontal movement, and pitch and yaw. The display screen group is electrically connected to the training simulation control system and is used to provide visual feedback on the flight simulation process, including loading and displaying flight training scenarios, as well as visual feedback on the flight simulation control status and flight simulation motion status during the flight simulation process. The cockpit is equipped with a gravity simulation system, which is installed on the pilot's seat to simulate gravity feedback during helicopter piloting simulation training. The gravity simulation system includes a safety harness for training users to wear, a drive box component, and a pull rope driven by the drive box component. One end of the pull cord is connected to the drive box component, and the other end is fixedly connected to the safety harness; The bottom of the safety harness is closed, with five holes for the head, hands, and feet, for training users to wear. The harness provides traction and controls the body's posture through the combination of the drive box component and the pull rope. The drive box components are combined with the pull ropes in a one-to-one correspondence, forming a set of gravity simulation components; The driver's seat is equipped with gravity simulation components at multiple locations, including drive box components on the top of the backrest, the two sides of the backrest, and the two sides of the bottom of the backrest, which are used to drive the corresponding pull ropes to perform stretching or retraction movements. The corresponding pull cords pass through pulleys and are connected to the corresponding positions of the safety harness, including the top of the back of the safety harness, the upper parts of both sides of the back, and the bottom of both sides of the safety harness. By placing the drive box components in different positions, the direction of force transmission of the pull rope is controlled by utilizing its positional characteristics, thereby achieving the effect of a safety harness worn by the training user and simulating the feeling of gravity.

2. The helicopter flight training simulation platform according to claim 1, characterized in that, The lifting system includes multiple sets of linear drives of the same specifications installed between the base and the slewing system. When the platform is in the initial position, the slewing system is parallel to the circular base of the base and is in a horizontal state, and is precisely calibrated by a multi-point level.

3. The helicopter flight training simulation platform according to claim 2, characterized in that, Each set of linear actuators is mounted on a circular base perpendicular to the base. Each set of linear actuators is designed to make linear displacement in the vertical direction, including telescopic motion. Through the linkage control of linear actuators configured in different positions, the attitude simulation of the rotary system supported by the linear actuators is realized. The linear actuator is mounted between the base and the rotary system in a manner that is evenly arranged in the circumferential direction.

4. The helicopter flight training simulation platform according to claim 1, characterized in that, The rotary system supported by the lifting system includes: The lower fixed plate and the upper rotating plate are designed to fit each other in shape; the bottom of the lower fixed plate is supported by a lifting system. The drive motor is mounted and fixed at the bottom of the lower fixed plate; The output shaft of the drive motor passes through the lower fixed plate via a bearing and is connected to the bottom center of the upper rotating plate, thereby driving the upper rotating plate to rotate relative to the lower fixed plate.

5. The helicopter flight training simulation platform according to claim 4, characterized in that, The lower fixed plate has a groove along the circumferential direction at the edge of its upper surface. The groove is annular and multiple arc-shaped sliders are embedded in it. The sliders are limited and guided by the groove and can rotate freely within it. The top of each slider is connected to the bottom of the upper rotating plate, so that the two are relatively fixed.

6. The helicopter flight training simulation platform according to claim 4, characterized in that, The upper surface of the upper rotating plate is also provided with a horizontal moving frame, and a pair of narrow track grooves are provided on the edges of the horizontal moving frame, with a fixed smooth track inside the track grooves. Along each track, there are multiple movable support blocks that are fitted or spanned across the smooth track. The multiple movable support blocks are evenly arranged to support and fix the frame structure of the cockpit. At least one of the plurality of movable support blocks can be driven by a first electric linear actuator to move on the track surface.

7. The helicopter flight training simulation platform according to claim 1, characterized in that, The drive box component is equipped with a second electric linear actuator and a traction block; the end of the motion guide rod of the second electric linear actuator is fixed to the traction block, and the upper end of the traction block is connected to one end of a pull rope that cooperates with it; the pull rope passes through the housing of the drive box component and is connected to the traction block. By controlling the extension and retraction of the second electric linear actuator to drive the reciprocating motion of the traction block, the traction and stretching effect on the corresponding pull rope that cooperates with the drive box component is achieved.

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