CN104616562B - Rail type flight simulator having continuous overload simulation capability - Google Patents

Abstract

The invention relates to an orbital flight simulator with continuous overload simulation capability, which is characterized in that it comprises two annular bottom rails connected to the ground, and a vertical annular wall is arranged on the periphery of the bottom rails; The inner wall is connected to two horizontal circular side rails; the bottom rail and the side rails are jointly slidably connected to a car body; the car body includes a carriage with an open front end and a closed rear end, and a roller set and a driving device that are slidingly connected to the bottom rail are arranged on the bottom of the carriage ; A roller group and a driving device slidingly connected to the side rails are arranged on the rear end of the carriage; two motors are symmetrically connected outside the walls on the left and right sides of the carriage, and the output shafts of the two motors pass through the side walls of the carriage to jointly support a rectangular middle frame; Two motors are arranged symmetrically on the front and rear sides of the middle frame, and the output ends of the two motors jointly support a closed hanging basket. Because the device of the invention performs high-speed centrifugal movement in the closed track structure, the car body can be completely closed rectified, thereby reducing the resistance generated during operation.

Description

An Orbital Flight Simulator with Sustained Overload Simulation Capability

technical field

The invention relates to a ground flight simulator, in particular to an orbital flight simulator with continuous overload simulation capability.

Background technique

With the continuous development of both theory and technology in the field of aircraft research and development, modern high-performance aircraft can generate an overload of up to 9g during maneuvering, and the overload change rate can reach a maximum of 6g/s, and the duration and number of repetitions of overload are relatively large. . Such flight conditions can easily lead to situations such as black vision, spatial positioning illusion, and even loss of consciousness when pilots make large maneuvers, which can easily cause serious consequences. The above-mentioned overload refers to the ratio of all accelerations acting on the aircraft or the pilot itself except the acceleration of gravity to the constant g of the acceleration of gravity, where g=9.81m/s ² .

Aeromedical research shows that repeated high-overload training for pilots can effectively improve their ability to withstand overload. Using real aircraft training will have the best effect, but this method not only consumes the service life of the aircraft, but also costs a lot, and there are greater safety hazards. Therefore, the development of flight simulators that operate on the ground and can truly simulate aircraft overload situations has become an important direction in this field.

There are two types of existing ground flight simulator devices, one is a flight simulator based on a Stewart six-degree-of-freedom parallel mechanism, and the other is a rocker-type flight simulator with three rotational degrees of freedom. Among them, the flight simulator with a six-degree-of-freedom parallel mechanism fixes the flight simulator seat and visual system on the moving platform of the Stewart mechanism, and uses the six-axis coordinated control of the mechanism to achieve a certain range of instantaneous overload simulation (0.1 g ~ 1.9g). The Stewart mechanism has a compact structure, a large stiffness-to-mass ratio, and good maneuverability. However, due to its very limited movement space, its maximum overload capacity is limited, and the time it can maintain overload is also limited. Therefore, the flight simulator with a six-degree-of-freedom parallel mechanism is mainly used in flight training occasions such as civil aviation airliners that do not require high maneuverability. Another rocker-type flight simulator with three degrees of freedom has enough working space, can better guarantee the maximum overload and overload holding time, and can realize continuous overload simulation, so it is widely used in fighter jets, etc. High maneuvering aircraft flight training. However, due to the use of the rocker arm structure, this type of flight simulator has a large operating radius and high requirements on the strength of the rocker arm. At the same time, it is necessary to hang a counterweight weighing tens of tons at one end of the rocker arm to maintain the overall center of gravity. Moderate, so that the burden of material consumption and energy consumption are very large. In addition, due to the particularity of the rocker arm structure, it is not convenient to install a fairing on the entire rotating part, so the overall structure is greatly affected by wind resistance during operation, resulting in excessive energy loss. On the other hand, the above two flight simulators have a negative impact on the safety of flight training during the high-speed maneuvering flight simulation process because the seat or the gondola carrying the pilot is directly suspended in the air.

Contents of the invention

In view of the above problems, the object of the present invention is to provide an orbital flight simulator with low energy consumption and high operational safety, which has continuous overload simulation capability.

In order to achieve the above object, the present invention adopts the following technical solutions: an orbital flight simulator with continuous overload simulation capability, which is characterized in that it includes two concentric ring-shaped bottom rails that are fastened to the ground. A vertical ring-shaped wall concentric with the bottom track is arranged on the ground on the periphery of the bottom track; two horizontally arranged ring-shaped side tracks are fastened on the inner wall of the ring wall; the bottom track and the side track share a common A car body is slidably connected; the car body includes a compartment with an open front end and a closed rear end, and a first roller set and a first driving device that are slidably connected to the bottom track on the bottom surface of the compartment; The rear end surface of the car is provided with a second roller set and a second driving device that are slidingly connected to the side rails; two first motors are symmetrically fastened on the outside of the left and right side walls of the carriage, and the output of the two first motors After passing through the two side walls of the compartment, the shafts jointly support a rectangular middle frame; two second motors are symmetrically arranged on the front and rear sides of the middle frame, and the output shafts of the two second motors jointly support a closed crane. basket.

A curved fairing is respectively arranged outside the left and right sides of the carriage; the left and right sides of the hanging basket are respectively another curved fairing.

The first driving device of the first roller group is driven by a pulley transmission mechanism, which includes two third motors fastened to the two rear wheels on the bottom surface of the carriage, and the output of each third motor A small pulley is arranged on the shaft, and a large pulley is coaxially arranged on each of the rear wheels, and the large pulley and the small pulley jointly support a belt.

The second driving device of the second roller set is driven by a gear transmission mechanism, which includes a fourth motor fastened to the two rear wheels on the rear end surface of the carriage, and the output shaft of the fourth motor is A driving wheel is provided, and a driven wheel is coaxially arranged between the two rear wheels, and the driving wheel meshes with the driven wheel; the second motor provided on the middle frame is a frameless torque motor.

A seat is fastened in the hanging basket, and a control device for controlling the operation of the entire flight simulator is arranged on the left and right sides of the seat; a display is arranged in front of the seat; behind the seat The lower part of the hanging basket is rotatably provided with a staircase door.

The present invention has the following advantages due to the adoption of the above technical scheme: 1. The device of the present invention can simulate the continuous overload sense in three axial directions during actual flight, and combine with the visual simulation system to provide trainee pilots with a real, durable and safe simulated flight environment. 2. Since the device of the present invention adopts high-speed centrifugal movement in a closed track structure, the car body can be completely and closed rectified so as to reduce the resistance generated during operation. 3. Since the device of the present invention operates in a closed wall, it effectively avoids the hidden danger of the hanging basket being "flyed" during the working process, and improves the safety performance. 4. The present invention only needs to use two relatively small power driving devices to realize the overall rotary motion, avoiding the high power requirements brought by the rocker arm and its counterweight, thereby reducing the energy consumption of the entire system during operation . 5. The maximum overload that the device of the present invention can generate during operation can reach 10g.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the compartment structure schematic diagram of the present invention;

Fig. 3 is a block diagram of the pulley structure of the present invention;

Fig. 4 is a schematic diagram of the internal structure of the hanging basket of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1-3, the present invention includes two concentric annular bottom rails 1 fastened to the ground, and a vertical annular wall 2 concentric with the bottom rail 1 is arranged on the ground at the periphery of the bottom rail 1. Two horizontally arranged annular side rails 3 are fastened to the inner wall of the annular wall body 2 . The bottom track 1 and the side track 3 are jointly slidably connected to a vehicle body 4 . The car body 4 includes a compartment 43 with an open front end and a closed rear end. The bottom surface of the compartment 43 is provided with a set of rollers 41 slidingly connected to the bottom track 1 and a driving device 9 for driving the set of rollers 41. There are roller sets 42 slidably connected to the side rails 3 and a driving device 10 for driving the roller sets 42 . Two motors 6 are fastened and connected symmetrically on the outside of the left and right side walls of the compartment 43, and the output shafts of the two motors 6 pass through the two side walls of the compartment 43 to jointly support a rectangular middle frame 5 to drive the middle frame 5 to roll. move. Two motors 8 are symmetrically arranged on the front and back sides of the middle frame 5 , and the output shafts of the two motors 8 jointly support a closed hanging basket 7 to drive the hanging basket 7 to pitch and rotate relative to the middle frame 5 .

In the above-mentioned embodiment, a curved fairing 11 is respectively arranged outside the left and right sides of the carriage 43, and a curved fairing 12 is respectively arranged on the left and right sides of the hanging basket 7, and the curved fairing 11 and the curved fairing 12 are used to lower the hanging basket 7. And the wind resistance of compartment 43 and its internal structure during rotation.

In the above-described embodiment, the driving device 9 of the roller set 41 is driven by a pulley transmission mechanism, which includes two motors 91 fastened to the two rear wheels on the bottom surface of the compartment 43, and a small belt is arranged on the output shaft of each motor 91. Wheel 92, a large pulley 93 is coaxially arranged on each rear wheel, and the large pulley 93 and the small pulley 92 support a belt 94 together. The roller set 41 is driven to rotate by a motor 91 and a belt 94 .

In the above-described embodiment, the driving device 10 of the roller group 42 is driven by a gear transmission mechanism, which includes a motor 101 fastened to the two rear wheels on the rear end surface of the carriage 43, and the output shaft of the motor 101 is provided with a drive wheel 102, A driven wheel 103 is coaxially arranged between the two rear wheels, and the driving wheel engages with the driven wheel. The roller group 42 drives the driving wheel 102 to rotate through the motor 101, and the driving wheel 102 drives the driven wheel 103 to drive the roller group 42 to rotate. The motor 8 arranged on the middle frame 5 is a frameless torque motor.

In the above embodiment, as shown in FIG. 4 , a seat 72 is fastened inside the gondola 7 , and a control device 73 for controlling the operation of the entire flight simulator is arranged on the left and right sides of the seat 72 . A monitor 74 is provided in front of the seat 72 . A staircase door 75 is rotatably provided at the lower part of the hanging basket 7 at the seat 72 rear.

When the present invention is working, the car body 4 is first affected by the driving device 9 at the bottom, and the driving roller group 41 moves in a circle along the bottom track 1, and now the gravity of the car body 4 is greater than the centrifugal force. When the speed of the circular movement of the car body 4 gradually increases until the centrifugal force of the car body 4 is greater than the gravity, the car body 4 is simultaneously affected by the driving device 10 at the rear, and the driving roller group 42 moves in a circle along the side track 3; at the same time, the middle frame 5 Under the action of the motor 6 arranged on the left and right sides of the carriage 43, the rolling rotation is performed in the carriage 43, and the hanging basket 7 is driven by the motor 8 arranged on the front and rear side plates 52 of the middle frame 5 to make a circle around the middle frame 5. Pitch and turn.

The device of the present invention utilizes the centrifugal force produced during the high-speed rotation of the car body 4 along the bottom rail 1 and the side rail 3 to realize the generation of continuous high overload, and at the same time utilizes the limited and low-speed rotation of the middle frame 5 and the hanging basket 7 to affect the pilot's actual load. Therefore, the present invention can realize continuous and highly realistic overload flight simulation.

Above-mentioned each embodiment is only for illustrating the present invention, wherein the structure of each component, connection mode etc. all can be changed to some extent, every equivalent conversion and improvement carried out on the basis of the technical solution of the present invention, all should not be excluded from the present invention. outside the scope of protection of the invention.

Claims (7)

1. An orbital flight simulator with continuous overload simulation capability is characterized in that: it comprises two concentric annular bottom rails fastened to the ground, and a A vertical annular wall concentric with the bottom track; two horizontally arranged annular side rails are fastened on the inner wall of the annular wall; the bottom track and the side rails are jointly slidably connected to a car body; the car body It includes a compartment with an open front end and a closed rear end. A first roller set and a first driving device that are slidably connected to the bottom track are provided on the bottom surface of the compartment; The second roller set and the second drive device are slidingly connected; two first motors are symmetrically fastened on the outside of the left and right side walls of the carriage, and the output shafts of the two first motors pass through the two side walls of the carriage A rectangular middle frame is jointly supported at the rear; two second motors are symmetrically arranged on the front and rear sides of the middle frame, and the output shafts of the two second motors jointly support a closed hanging basket. 2. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 1, characterized in that: a curved fairing is respectively arranged outside the left and right sides of the compartment; The sides are respectively another curved fairing. 3. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 1, characterized in that: the first driving device driving the first roller group is driven by a pulley transmission mechanism, and it It includes two third motors fastened to the two rear wheels on the bottom surface of the carriage, a small pulley is arranged on the output shaft of each third motor, and a large belt pulley is coaxially arranged on each rear wheel. The large pulley and the small pulley jointly support a belt. 4. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 2, characterized in that: the first driving device driving the first roller group is driven by a pulley transmission mechanism, and it It includes two third motors fastened to the two rear wheels on the bottom surface of the carriage, a small pulley is arranged on the output shaft of each third motor, and a large belt pulley is coaxially arranged on each rear wheel. The large pulley and the small pulley jointly support a belt. 5. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 1 or 2 or 3 or 4, characterized in that: the second driving device driving the second roller set adopts a gear Driven by a transmission mechanism, it includes a fourth motor fastened to the two rear wheels on the rear end surface of the carriage, a driving wheel is arranged on the output shaft of the fourth motor, and a drive wheel is coaxially arranged between the two rear wheels. The driven wheel, the driving wheel meshes with the driven wheel; the second motor provided on the middle frame is a frameless torque motor. 6. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 1 or 2 or 3 or 4, characterized in that: a seat is fastened in the hanging basket, The left and right sides of the seat are provided with manipulating devices for controlling the operation of the entire flight simulator; a display is provided in front of the seat; and a stair door is provided for rotation at the lower part of the hanging basket behind the seat. 7. A kind of orbital flight simulator with continuous overload simulation capability as claimed in claim 5, characterized in that: a seat is fastened in the hanging basket, and a seat is arranged on the left and right sides of the seat There is an operating device for controlling the operation of the entire flight simulator; a display is arranged in front of the seat; a stair door is rotatably arranged at the lower part of the hanging basket behind the seat.