A device and method for remotely controlling the extension and retraction of flaps in the rear cabin.

Abstract

This invention relates to the field of aviation technology, specifically a device and method for remotely controlling the retraction and extension of flaps in the rear cabin. To improve the efficiency and effectiveness of flap teaching and training, the invention structurally adds pneumatic solenoid valves to the corresponding air supply, retraction, and extension pipelines of the rear cabin flap switch. The controller consists of a power supply, valve control components, and a control program, and is electrically connected to each solenoid valve. This invention provides a device and method for remotely controlling the retraction and extension function of the rear cabin flaps when the rear cabin flap switch handle is in a neutral state. This invention not only retains the original control functions of the front and rear cabin flaps but also enables remote control of the rear cabin flaps from the ground, thus improving the efficiency and effectiveness of teaching and training.

Description

Technical Field

[0001] This invention relates to the field of aviation technology, specifically to a device and method for remotely controlling the retraction and deployment of flaps in the rear cabin using pneumatic solenoid valves, controllers, and forward and aft cabin flap retraction and deployment switches. More specifically, it relates to a device and method for remotely controlling the retraction and deployment of flaps in the rear cabin. Background Technology

[0002] The existing flap retraction and extension air conditioning system of a certain type of aircraft uses front and rear cockpit flap retraction and extension switches to achieve flap retraction and extension functions. During demonstrations and training, the front and rear cockpits are operated by the student and instructor respectively. When the rear cockpit flap switch handle is in the neutral position, the student in the front cockpit can operate the flaps through the front cockpit flap switch; when the rear cockpit flap switch handle is in the retracted position, and the front cockpit flap switch handle is in the down position, the flaps slowly lower; when the rear cockpit flap switch handle is in the down position, and the front cockpit flap switch handle is in the retracted position, the flaps do not move. During each demonstration and training session, the instructor needs to frequently get on the aircraft to operate the system, get off to explain, observe the student's operation and flap movement, and assess each student's learning progress. This not only consumes a lot of time and energy but also affects the teaching effectiveness. The flap retraction and extension air conditioning system consists of an air conditioning source, front and rear cockpit flap retraction and extension switches, flap valves, and flap retraction and extension actuators. Summary of the Invention

[0003] In teaching and training aircraft landing systems, to free up instructors in the rear cockpit and allow them to better teach and demonstrate functions to a large number of trainees from the ground, this invention provides a device and method for remotely controlling the flap extension and retraction function from the rear cockpit when the rear cockpit flap switch handle is in a neutral state. This invention not only retains the original control functions of the front and rear cockpit flaps but also enables remote control of the rear cockpit flaps from the ground, improving the efficiency and effectiveness of teaching and training.

[0004] Purpose of the invention

[0005] To improve the efficiency and effectiveness of flap teaching and training, this invention adds pneumatic solenoid valves to the corresponding pipelines for the air supply, retraction, and extension of the aft flap switch. The controller consists of a power supply, valve control components, and control program, and is electrically connected to each solenoid valve.

[0006] Technical solution

[0007] A device for remotely controlling the extension and retraction of flaps in the rear compartment includes a cold air source connected to the air inlet of the front compartment flap switch, the air inlet of the rear compartment flap extension solenoid valve, the air inlet of the rear compartment flap switch, and the air inlet of the rear compartment flap retraction solenoid valve. The "extension" and "retraction" interfaces of the front compartment flap switch are connected to the lower ends of the flap extension and retraction valves, respectively. The air outlet of the rear compartment flap extension solenoid valve is connected to the nut end of the flap extension valve, the "extension" interface of the rear compartment flap switch, and the air inlet of the actuator cylinder extension chamber venting solenoid valve; the rear compartment flap extension solenoid valve is electrically connected to a controller. The air inlet of the actuator cylinder extension chamber venting solenoid valve is connected to the nut end of the flap extension valve; the actuator cylinder extension chamber venting solenoid valve is electrically connected to the controller. The air inlet of the actuator cylinder retraction chamber venting solenoid valve is connected to the nut end of the retraction valve; the actuator cylinder retraction chamber venting solenoid valve is electrically connected to the controller. The exhaust port of the aft flap retraction solenoid valve is connected to the exhaust port of the actuation cylinder retraction chamber vent solenoid valve, the nut end of the retraction flap valve, and the "retraction" interface of the aft flap switch. The aft flap retraction solenoid valve is electrically connected to the controller. The side connector of the extension flap valve is connected to the "extension" interface of the flap actuator, and the side connector of the retraction flap valve is connected to the "retraction" interface of the flap actuator. The lower end of the retraction flap valve is connected to the "retraction" interface of the forward flap switch.

[0008] A method for remotely controlling the retraction and extension of flaps in the rear cabin, wherein the rear cabin flap switch handle remains in a neutral state during ground-based remote control of the rear cabin flap retraction and extension. A cold air source supplies pressurized air to the air inlets of the forward cabin flap switch, the rear cabin flap lowering solenoid valve, the rear cabin flap switch, and the rear cabin flap retraction solenoid valve simultaneously via connected piping.

[0009] When the rear compartment flaps are extended via remote ground control, the controller outputs control signals to the rear compartment flap extension solenoid valve and the actuator cylinder upper chamber venting solenoid valve, respectively, activating the solenoid valve air circuits. Air pressure passes through the rear compartment flap extension solenoid valve, entering the flap valve through the flap extension valve nut end, causing the diversion valve to move and compressing the spring. Cold air enters the extension chamber of the flap extension actuator cylinder through the side connector of the flap extension valve; simultaneously, gas in the upper chamber of the flap extension actuator cylinder passes sequentially through the side connector of the flap retraction valve into the flap retraction valve, the flap retraction valve nut end, and then into the actuator cylinder upper chamber venting solenoid valve, purging the gas from this pipeline.

[0010] When the rear compartment flaps are retracted via remote ground control, the controller outputs control signals to the rear compartment flap retraction solenoid valve and the actuator cylinder lowering chamber vent solenoid valve, respectively, activating the solenoid valve air circuits. Air pressure passes through the rear compartment flap retraction solenoid valve, entering the flap valve through the flap retraction valve nut end, causing the diversion valve to move and compressing the spring. Cold air enters the upper retraction chamber of the flap retraction actuator cylinder through the side connector of the flap retraction valve; simultaneously, gas in the lowering chamber of the flap retraction actuator cylinder sequentially passes through the side connector of the flap extension valve into the flap extension valve, then into the flap extension valve nut end, and finally into the actuator cylinder lowering chamber vent solenoid valve, purging the gas from this pipeline.

[0011] Furthermore, when remotely controlling the retraction and extension of the rear cabin flaps from the ground, the rear cabin flap switch handle remains in a neutral position.

[0012] Furthermore, the cold air source supplies air pressure to the air supply ports of the front cabin flap switch, the rear cabin flap lowering solenoid valve, the rear cabin flap switch, and the rear cabin flap retracting solenoid valve simultaneously through the connected pipeline.

[0013] Furthermore, the aft compartment flap lowering solenoid valve, the actuator lowering chamber venting solenoid valve, the actuator retracting chamber venting solenoid valve, and the aft compartment flap retracting solenoid valve are all two-position three-way one-in-one-out normally closed solenoid valves. When energized, the valve of the solenoid valve opens; when de-energized, the valve of the solenoid valve closes. The voltage supply is 24±10%VDC.

[0014] Furthermore, the controller can be a portable controller that is easy to carry, or it can be a functional module embedded in the test bench measurement and control system;

[0015] Furthermore, the controller should have both electrical manual and automatic control functions and software manual and automatic control functions, with an adjustable voltage control range of 0 to 30VDC and no fewer than 4 control channels;

[0016] Furthermore, the aft compartment flap lowering solenoid valve, the actuator lowering chamber venting solenoid valve, the actuator retracting chamber venting solenoid valve, and the aft compartment flap retracting solenoid valve are all solenoid valves with air as the working medium and an air pressure range of less than 6 MPa.

[0017] The beneficial effects of this application are as follows:

[0018] This invention provides a method for remotely controlling the operation of the rear cabin flaps by adding pneumatic solenoid valves and configuring controllers on the corresponding air supply, retraction, and extension pipelines of the rear cabin flap switch when the rear cabin flap switch handle is in a neutral state.

[0019] Compared to existing devices, this device simplifies and facilitates the installation of solenoid valves on the pipelines. The added solenoid valves occupy little space and have minimal impact on the internal space of the test bench. Furthermore, the controller is independent of the test bench frame and does not affect its spatial layout. The combination of solenoid valves and controller enables remote ground control of the aft cabin flap operation.

[0020] This method, through remote manual / automatic control of the solenoid valves from the ground, solves the problem of frequent switching between multiple scenarios and working conditions during teaching and training, where instructors need to operate the equipment on the aircraft, explain it after disembarking, observe student operations and flap movements, and assess each student's learning progress. It saves instructors operating time and physical energy, allowing them more time to provide on-site explanations to students. Simultaneously, instructors can gain a more intuitive and clear understanding of the students' practical skills, thus improving the efficiency and effectiveness of teaching and training.

[0021] This invention offers the advantage of redundancy control, retaining the original control methods for the front and rear cabins when performing remote ground control of the rear flap operation. If one method fails, it can immediately switch to another, avoiding interruptions to teaching and training and ensuring the continuity of training.

[0022] This technical solution is applicable to the remote control of the rear cabin flap operation on the ground of the same type of test bench. By making appropriate adjustments and configurations to the position, number and controller channels of the solenoid valves on the pipeline, it can also be extended to other types of test benches. Attached Figure Description

[0023] Figure 1 The system schematic is shown in the figure.

[0024] In the diagram: 1. Air source; 2. Front compartment flap switch; 3. Rear compartment flap deployment solenoid valve; 4. Actuator cylinder deployment chamber venting solenoid valve; 5. Controller; 6. Actuator cylinder retraction chamber venting solenoid valve; 7. Rear compartment flap retraction solenoid valve; 8. Rear compartment flap switch; 9. Flap deployment valve; 10. Flap retraction valve; 11. Flap actuator cylinder. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this invention. The embodiments described below with reference to reference are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below.

[0026] To improve the efficiency and effectiveness of flap teaching and training, this invention structurally adds pneumatic solenoid valves to the corresponding air supply, retraction, and extension pipelines of the aft cabin flap switch; the controller consists of a power supply, valve control components, and control program, and is electrically connected to each solenoid valve. See [link / details omitted]. Figure 1 .

[0027] A device for remotely controlling the deployment and retraction of flaps in the rear compartment includes a cold air source 1 connected to the air inlet of the front compartment flap switch 2, the air inlet of the rear compartment flap deployment solenoid valve 3, the air inlet of the rear compartment flap switch 8, and the air inlet of the rear compartment flap retraction solenoid valve 7. The "deploy" and "retract" interfaces of the front compartment flap switch 2 are connected to the lower ends of the deployment flap valve 9 and the retraction flap valve 10, respectively. The air outlet of the rear compartment flap deployment solenoid valve 3 is connected to the nut end of the deployment flap valve 9, the "deploy" interface of the rear compartment flap switch 8, and the air inlet of the actuator cylinder deployment chamber venting solenoid valve 4. The rear compartment flap deployment solenoid valve 3 is electrically connected to a controller 5. The air inlet of the actuator cylinder deployment chamber venting solenoid valve 4 is connected to the nut end of the deployment flap valve 9, and the actuator cylinder deployment chamber venting solenoid valve 4 is electrically connected to the controller 5. The air inlet of the upper chamber venting solenoid valve 6 is connected to the nut end of the flap retraction valve 10, and the upper chamber venting solenoid valve 6 is electrically connected to the controller 5. The air outlet of the aft flap retraction solenoid valve 7 is connected to the air inlet of the upper chamber venting solenoid valve 6, the nut end of the flap retraction valve 10, and the "retract" interface of the aft flap switch 8, and the aft flap retraction solenoid valve 7 is electrically connected to the controller 5. The side connector of the flap extension valve 9 is connected to the "extension" interface of the flap actuator 11, the side connector of the flap retraction valve 10 is connected to the "retraction" interface of the flap actuator 11, and the lower end of the flap retraction valve 10 is connected to the "retraction" interface of the forward flap switch 2.

[0028] A method for remotely controlling the retraction and extension of flaps in the rear cabin, wherein the handle of the rear cabin flap switch (8) is always in a neutral state when the rear cabin flaps are remotely controlled from the ground. The cold air source (1) supplies air pressure to the air supply ports of the front cabin flap switch (2), the rear cabin flap lowering solenoid valve (3), the rear cabin flap switch (8), and the rear cabin flap retraction solenoid valve (7) through the connected pipeline.

[0029] When the rear cabin flaps are extended by remote control from the ground, the controller (5) outputs control signals to the rear cabin flap extension solenoid valve (3) and the actuator cylinder upper chamber vent solenoid valve (6) respectively, connecting the solenoid valve air path. The air pressure passes through the rear cabin flap extension solenoid valve (3) and enters the flap valve from the nut end of the flap extension valve (9), causing the diversion valve to move and compressing the spring. The cold air enters the extension chamber of the flap extension actuator cylinder (11) through the side connector of the flap extension valve (9); at the same time, the gas in the upper chamber of the flap extension actuator cylinder (11) passes through the side connector of the flap extension valve (10) in sequence into the flap extension valve 10, the nut end of the flap extension valve 10, and then into the actuator cylinder upper chamber vent solenoid valve (6), purging the gas in this pipeline.

[0030] When the rear cabin flaps are retracted via remote ground control, the controller (5) outputs control signals to the rear cabin flap retraction solenoid valve (7) and the actuator cylinder lowering chamber vent solenoid valve (4) respectively, connecting the solenoid valve air path. The air pressure passes through the rear cabin flap retraction solenoid valve (7) and enters the flap valve 10 from the nut end of the flap retraction valve (10), causing the diversion valve to move and compressing the spring. The cold air enters the upper retraction chamber of the flap retraction actuator cylinder (11) through the side connector of the flap retraction valve (10); at the same time, the gas in the lowering chamber of the flap retraction actuator cylinder (11) passes through the side connector of the flap extension valve (9) in sequence into the flap extension valve (9), the nut end of the flap extension valve (9), and the actuator cylinder lowering chamber vent solenoid valve (4), purging the gas in this pipeline.

[0031] In one embodiment of the present invention, when the rear cabin flaps are remotely controlled from the ground, the handle of the rear cabin flap switch (8) is always in a neutral state.

[0032] In one embodiment of the present invention, the cold air source (1) supplies air pressure to the air supply ports of the front cabin flap switch (2), the rear cabin flap lowering solenoid valve (3), the rear cabin flap switch (8), and the rear cabin flap retracting solenoid valve (7) through the connected pipeline.

[0033] In one embodiment of the present invention, the aft cabin flap lowering solenoid valve 3, the actuator lowering chamber venting solenoid valve 4, the actuator retracting chamber venting solenoid valve 6, and the aft cabin flap retracting solenoid valve 7 are all two-position three-way one-in-one-out normally closed solenoid valves. When energized, the valve of the solenoid valve opens; when de-energized, the valve of the solenoid valve closes. The voltage supply is (24±10%)VDC.

[0034] In one embodiment of the present invention, the controller (5) can be a portable controller that is easy to carry, or it can be a functional module embedded in the test bench measurement and control system;

[0035] In one embodiment of the present invention, the controller (5) shall have electrical manual and automatic control functions and software manual and automatic control functions, the voltage control range shall be adjustable in the range of 0 to 30VDC, the control channels shall be no less than 4, and the control progress shall be better than 0.5%;

[0036] In one embodiment of the present invention, the rear cabin flap lowering solenoid valve (3), the actuator lowering chamber venting solenoid valve (4), the actuator retracting chamber venting solenoid valve (6), and the rear cabin flap retracting solenoid valve (7) are solenoid valves with air as the working medium and an air pressure range of less than 6 MPa.

[0037] In one embodiment of the present invention, while realizing the remote control of the rear cabin flap retraction and extension function from the ground, the invention retains the original flap retraction and extension control method of the test bench, which has the advantage of redundancy. When one control method fails, it can be easily and quickly switched to another control method.

[0038] The method involves providing the required air pressure for flap retraction and extension via a cold air source. When the aft flap switch handle remains in the neutral position, a signal is sent by the controller to control the opening and closing of the air circuit solenoid valve. This causes the gas in the cold air source to sequentially pass through the aft flap lowering solenoid valve (aft flap retraction solenoid valve) and the flap valve nut end into the flap valve, causing the diversion valve to move and compressing the spring. The cold air then enters the flap retraction and extension actuator through the side connector of the flap valve. Simultaneously, the gas in the other chamber of the flap retraction and extension actuator sequentially passes through the corresponding side connector connected to the flap valve into the flap valve, the flap valve nut end, and then into the vent solenoid valve, thus venting the gas in this pipeline.

[0039] This invention relates to a device and method for remotely controlling the aft cabin flap operation, comprising a cold air source, a front and rear cabin flap retraction / extension switch, a pneumatic solenoid valve, a controller, a flap valve, and a flap retraction / extension actuator. A schematic diagram of the system is shown below. Figure 1 .

[0040] When the rear cabin flaps are remotely controlled from the ground, the handle of the rear cabin flap switch (8) remains in a neutral position. The cold air source (1) supplies air pressure to the air supply ports of the front cabin flap switch (2), the rear cabin flap lowering solenoid valve (3), the rear cabin flap switch (8), and the rear cabin flap retracting solenoid valve (7) through the connected pipeline.

[0041] When the rear cabin flaps are deployed remotely from the ground, the controller (5) outputs 24VDC control signals to the rear cabin flap deployment solenoid valve (3) and the actuator cylinder upper chamber venting solenoid valve (6), respectively. The two normally closed solenoid valves are energized, the valves of the solenoid valves are opened, and the air passage of the pipeline where the solenoid valve is located is connected. The air pressure passes through the rear cabin flap deployment solenoid valve (3) and enters the flap valve from the nut end of the flap deployment valve (9), causing the diversion valve to move and compressing the spring. The cold air enters the deployment chamber of the flap deployment actuator cylinder (11) through the side connector of the flap deployment valve (9); at the same time, the gas in the upper chamber of the flap deployment actuator cylinder (11) passes through the side connector of the flap deployment valve (10) and enters the flap deployment valve 10, the nut end of the flap deployment valve 10, and then enters the actuator cylinder upper chamber venting solenoid valve (6) to remove the gas in this pipeline.

[0042] When the rear cabin flaps are retracted via remote ground control, the controller (5) outputs 24VDC control signals to the rear cabin flap retraction solenoid valve (7) and the actuator cylinder lowering chamber vent solenoid valve (4), respectively. The two normally closed solenoid valves are energized, the valves of the solenoid valves are opened, and the air path of the pipeline where the solenoid valve is located is connected. The air pressure passes through the rear cabin flap retraction solenoid valve (7) and enters the flap valve 10 from the nut end of the flap retraction valve (10), causing the diversion valve to move and compressing the spring. The cold air enters the upper chamber of the flap retraction actuator cylinder (11) through the side connector of the flap retraction valve (10); at the same time, the gas in the lower chamber of the flap retraction actuator cylinder (11) passes through the side connector of the flap extension valve (9) and enters the nut end of the flap extension valve (9) and the actuator cylinder lowering chamber vent solenoid valve (4) in sequence, thus venting the gas in this pipeline.

[0043] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein. The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments applicable to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of the present invention.

Claims

1. A method for remotely controlling the deployment and retraction of flaps in the rear cabin, characterized in that, Based on the deployment and retraction device, the cold air source in the device is connected to the air inlet of the front cabin flap switch, the air inlet of the rear cabin flap lowering solenoid valve, the air inlet of the rear cabin flap switch, and the air inlet of the rear cabin flap retracting solenoid valve; the "release" and "retract" interfaces of the front cabin flap switch are connected to the lower ends of the flap release valve and the retracting valve, respectively; the air outlet of the rear cabin flap lowering solenoid valve is connected to the nut end of the flap release valve, the "release" interface of the rear cabin flap switch, and the air inlet of the vent solenoid valve in the lowering chamber of the actuator cylinder; the rear cabin flap lowering solenoid valve is electrically connected to the controller; the actuator cylinder release... The air inlet of the lower chamber venting solenoid valve is connected to the nut end of the flap extension valve, and the actuator cylinder electrically connects the lower chamber venting solenoid valve to the controller; the air inlet of the upper chamber venting solenoid valve is connected to the nut end of the flap retraction valve, and the actuator cylinder electrically connects the upper chamber venting solenoid valve to the controller; the air outlet of the aft flap retraction solenoid valve is connected to the air inlet of the upper chamber venting solenoid valve, the nut end of the flap retraction valve, and the "retraction" interface of the aft flap switch, and the aft flap retraction solenoid valve is electrically connected to the controller; the side connector of the flap extension valve is connected to the "extension" interface of the flap actuator cylinder. The side nozzle of the flap retraction valve is connected to the "retraction" interface of the flap actuator, and the lower end of the flap retraction valve is connected to the "retraction" interface of the front cabin flap switch. When the rear cabin flaps are remotely controlled from the ground for retraction and extension, the rear cabin flap switch handle is always in a neutral state. The cold air source supplies air pressure to the air supply ports of the front cabin flap switch, the rear cabin flap extension solenoid valve, the rear cabin flap switch, and the rear cabin flap retraction solenoid valve through the connected pipeline. When the rear cabin flaps are remotely controlled from the ground, the rear cabin flap switch handle is always in a neutral position; the cold air source supplies air pressure to the air supply ports of the front cabin flap switch, the rear cabin flap lowering solenoid valve, the rear cabin flap switch, and the rear cabin flap retracting solenoid valve through the connected pipeline. When the rear compartment flaps are extended by remote ground control, the controller outputs control signals to the rear compartment flap extension solenoid valve and the actuator cylinder upper chamber venting solenoid valve respectively, connecting the solenoid valve air circuits; air pressure passes through the rear compartment flap extension solenoid valve, enters the flap extension valve from the flap extension valve nut end, causing the diversion valve to move and compressing the spring, and cold air enters the extension chamber of the flap extension actuator cylinder through the side connector of the flap extension valve; at the same time, the gas in the upper chamber of the flap extension actuator cylinder enters the flap retraction valve, the flap retraction valve nut end and the upper chamber venting solenoid valve of the actuator cylinder through the side connector of the flap retraction valve, venting the gas in this pipeline; When the rear cabin flaps are retracted via remote ground control, the controller outputs control signals to the rear cabin flap retraction solenoid valve and the actuator cylinder lowering chamber vent solenoid valve, respectively, to connect the solenoid valve air circuit. Air pressure passes through the rear cabin flap retraction solenoid valve and enters the flap retraction valve from the flap retraction valve nut end, causing the diversion valve to move and compressing the spring. Cold air enters the upper retraction chamber of the flap retraction actuator cylinder through the side connector of the flap retraction valve. At the same time, the gas in the lowering chamber of the flap retraction actuator cylinder enters the flap extension valve, the flap extension valve nut end, and the actuator cylinder lowering chamber vent solenoid valve in sequence through the side connector of the flap extension valve, thus venting the gas in this pipeline.

2. The method as described in claim 1, characterized in that, The aft compartment flap lowering solenoid valve, the actuator lowering chamber venting solenoid valve, the actuator retracting chamber venting solenoid valve, and the aft compartment flap retracting solenoid valve are all two-position three-way normally closed solenoid valves with one inlet and one outlet. When energized, the solenoid valve opens; when de-energized, the solenoid valve closes. The voltage supply is 24±10%VDC.

3. The method as described in claim 2, characterized in that, The controller is a portable controller that is easy to carry, or a functional module embedded in the test bench measurement and control system.

4. The method as described in claim 3, characterized in that, The controller should have both electrical and software manual / automatic control functions, with an adjustable voltage control range of 0–30VDC and at least four control channels.

5. The method as described in claim 4, characterized in that, The solenoid valve for lowering the aft flap, the solenoid valve for venting the lower chamber of the actuator, the solenoid valve for venting the upper chamber of the actuator, and the solenoid valve for retracting the aft flap are all solenoid valves with air as the working medium and an air pressure range of less than 6 MPa.

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