A non-adhesive, smooth-walled boundary compartmentation device and method

Abstract

This invention discloses a non-adhesive smooth wall boundary compartmentation device and method. It includes a partition support (1), which is vertically slidably connected to an airtight partition (2). An airtight groove (8) is provided along the outer edge of the airtight partition (2), and an airtight strip (3) is provided within the airtight groove (8). The top outer edge contour of the airtight partition (2) is parallel to the compartmentation interface contour (7). This invention solves the problems of compartmentation loading uniformity and structural stiffness.

Description

Technical Field

[0001] This invention belongs to the field of aircraft cabin airtightness testing technology, and specifically relates to a compartmentation device and method for non-adhesive smooth wall boundary. Background Technology

[0002] For manned aircraft, the combined aerodynamic loads and pressurized loads experienced by the canopy during flight act on the transparent canopy, resulting in a significant zonal pressure distribution. During ground testing, it is crucial to accurately simulate the pressure distribution on the canopy surface. Simultaneously, adding rigid support structures is not advisable, as this would alter the force transmission path and lead to erroneous test results. The appropriateness of the compartmentation method directly determines whether the loads in different areas of the cabin match actual flight conditions; therefore, employing a suitable compartmentation method is of paramount importance. However, the following problems currently exist:

[0003] Traditional compartment loading methods typically include: 1. Applying load in sections by attaching adhesive tape to the loading area; 2. Applying load in sections by inflating the compartment structure after fixing it in place. The first method uses an equivalent load approach, which can damage the compartment surface and result in uneven loading. The second method requires a large amount of sealant and additional support structures to ensure airtightness at the compartment interfaces, which compromises the structural rigidity of the compartment and affects the load transfer path.

[0004] In summary, the traditional zonal loading method has the problems of low uniformity of loading in each compartment and the addition of extra structural stiffness, which will have a significant impact on hatch fatigue tests with long test times. Summary of the Invention

[0005] The purpose of this invention is to provide a compartmentalization device and method for non-adhesive smooth wall boundaries. This invention solves the problems of compartmentalized loading uniformity and structural stiffness.

[0006] The technical solution of the present invention is: a non-adhesive smooth wall boundary compartmentation device, including a partition support seat, the partition support seat and the airtight partition are slidably connected vertically, an airtight groove is provided along the outer edge of the airtight partition, an airtight strip is provided in the airtight groove, and the outer contour of the top of the airtight partition is parallel to the contour of the compartmentation interface.

[0007] In the aforementioned non-adhesive smooth wall boundary compartment device, compartment sealing block A and compartment sealing block B are provided below the airtight partition. The top contours of compartment sealing blocks A and B are parallel to the bottom outer edge contour of the airtight partition, and the side contours of compartment sealing blocks A and B are in contact with the corresponding positions of the inner surface of the canopy.

[0008] In the aforementioned non-adhesive smooth wall boundary compartmentation device, a telescopic support drive mechanism is provided between the two compartment sealing blocks.

[0009] In the aforementioned non-adhesive smooth wall boundary compartment device, under sealed conditions, the distance between the outer edge contour of the top of the airtight partition and the contour of the compartment interface is 10mm.

[0010] In the aforementioned non-adhesive smooth wall boundary compartment device, the airtight band is generally shaped like a mountain, with rigid arms on both sides and the middle arm extending outwards when inflated.

[0011] In the aforementioned non-adhesive smooth wall boundary compartmentation device, the pressurization pressure of the airtight zone is greater than 5 times the maximum pressure difference at the compartmentation point during the test.

[0012] In the aforementioned non-adhesive smooth wall boundary compartmentation device, the radius of each bend in the outer edge contour of the airtight partition is greater than 70mm.

[0013] A method for sealing and partitioning a compartmentalized device as described above includes the following steps:

[0014] The first step is to wrap the airtight tape around the airtight groove on the outer edge of the airtight partition. At this time, the working surface of the airtight tape is at the same height as the outer edge of the airtight groove.

[0015] The second step is to open the canopy installed on the test bench platform, install a bulkhead support at the interface between the front and rear compartments on the test bench platform, and seal the bulkhead support with the test bench platform; slide the airtight bulkhead onto the bulkhead support and slide the airtight bulkhead down to a position that does not affect the opening and closing of the canopy.

[0016] Third step: Close the canopy in place, slide the airtight partition upwards until it is fixed 10mm from the inner surface of the canopy, that is, 10mm from the outline of the compartment interface.

[0017] The fourth step is to install compartment sealing block A and compartment sealing block B under the airtight partition. Then, attach 5mm thick vacuum putty and polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the canopy, and use the telescopic support drive mechanism to tighten them to both sides.

[0018] Fifth step: Close the operating door, inflate the airtight belt, and complete the installation of the front and rear compartment tooling.

[0019] The sixth step is to adjust the stamping pressure of the airtight belt to minimize the pressure on the inner surface of the canopy while meeting the pressure difference requirements between the front and rear compartments, and then begin the front and rear compartment loading test.

[0020] The advantages of this invention are: using this invention for compartmentation can effectively fit smooth boundaries; when the compartment surface deforms, the flexible pressurized airtight strip can also follow the deformation and fit, ensuring the effectiveness of the compartmentation. At the same time, this method does not introduce additional rigid support, ensuring that the support stiffness of the compartment structure does not change during pressure loading, and can effectively simulate the impact of actual loads on the compartment structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 Main view;

[0023] Figure 3 This is a schematic diagram showing the outline of the airtight partition and the compartment interface.

[0024] Figure 4 This is a schematic diagram of the cross-section of the airtight zone. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0027] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Example 1. A compartmentalization device with non-adhesive smooth wall boundaries, such as... Figures 1-4As shown, it includes a partition support 1, which is slidably connected to the airtight partition 2 in a vertical direction. An airtight groove 8 is provided along the outer edge of the airtight partition 2, and an airtight strip 3 is provided in the airtight groove 8. The top outer edge contour of the airtight partition 2 is parallel to the compartment interface contour 7.

[0029] Below the aforementioned airtight partition 2, there are compartment sealing blocks A4 and B5. The top contours of compartment sealing blocks A and B are parallel to the bottom outer edge contour of the airtight partition 2, and the side contours of compartment sealing blocks A and B are in contact with the corresponding positions of the inner surface of the canopy.

[0030] A telescopic support drive mechanism 6 is provided between the two compartment sealing blocks.

[0031] In the sealed state, the distance between the top outer edge contour of the airtight partition 2 and the compartment interface contour 7 is 10mm. The distance between the compartment partition and the compartment interface contour 7 plus the maximum displacement of the compartment interface during loading is less than the maximum working protrusion height of the airtight strip to ensure a complete seal.

[0032] The aforementioned airtight band 3 is shaped like a mountain, with rigid arms on both sides and the middle arm extending outwards when inflated. This structure ensures that the extension direction of the airtight band 3 always faces the compartment interface contour 7, preventing uneven stress when the airtight band contacts the compartment interface due to excessive extension cross-section, which would affect the sealing effect.

[0033] The pressurization pressure of the aforementioned airtight zone 3 is more than 5 times the maximum pressure difference at the compartment during the test.

[0034] The radius of each bend in the outer contour of the aforementioned airtight partition 2 is greater than 70mm. This structure ensures that the deformation curvature of the airtight strip is not too large, thereby avoiding stress concentration and affecting the reliability of the seal.

[0035] The aforementioned method for sealing and dividing compartments in a compartmentalized device includes the following steps:

[0036] The first step is to wrap the airtight tape 3 around the airtight groove 8 on the outer edge of the airtight partition 2. At this time, the working surface of the airtight tape 3 is at the same height as the outer edge of the airtight groove 8.

[0037] The second step is to open the canopy installed on the test bench platform, install the bulkhead support seat 1 at the interface between the front and rear compartments on the test bench platform, and seal the bulkhead support seat 1 with the test bench platform; slide the airtight bulkhead 2 onto the bulkhead support seat 1, and slide the airtight bulkhead 2 down to a position that does not affect the opening and closing of the canopy.

[0038] Third step: Close the canopy in place, slide the airtight partition 2 upwards until it is fixed 10mm from the inner surface of the canopy, that is, 10mm from the compartment interface outline 7.

[0039] The fourth step is to install compartment sealing blocks A4 and B5 below the airtight partition 2, and to attach 5mm thick vacuum putty and polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the canopy, and to use telescopic support drive mechanism 6 to tighten them to both sides.

[0040] Fifth step: Close the operating door, inflate the airtight belt 3, and complete the installation of the front and rear compartment tooling.

[0041] Step 6: Adjust the stamping pressure of the airtight belt 3 to minimize the pressure on the inner surface of the canopy while meeting the pressure difference requirements between the front and rear compartments, and begin the front and rear compartment loading test.

Claims

1. A compartmentalization device with a non-adhesive smooth wall boundary, characterized in that, It includes a partition support base, which is slidably connected to the airtight partition in the vertical direction. An airtight card slot is provided along the outer edge of the airtight partition, and an airtight belt is provided in the airtight card slot. The outer edge contour of the top of the airtight partition is parallel to the contour of the compartment interface; the sealing and compartmenting method of the compartmenting device is as follows: First step, wind the airtight belt into the airtight card slot on the outer edge contour of the airtight partition. At this time, the working surface of the airtight belt is at the same height as the outer edge of the airtight card slot; Second step, open the cockpit cover installed on the test bench plate. Install the partition support base at the front and rear compartment interface on the test bench plate, and seal the partition support base and the test bench plate; Connect the airtight partition to the partition support base in a sliding manner, and slide down the airtight partition to a position that does not affect the opening and closing of the cockpit cover; Third step, close the cockpit cover in place, slide up the airtight partition to a position fixed at 10 mm from the inner surface of the cockpit cover, that is, at 10 mm from the contour of the compartment interface; Fourth step, install compartment sealing block A and compartment sealing block B below the airtight partition. Paste a 5-mm-thick vacuum putty and a polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the cockpit cover, and tighten them on both sides with a telescopic support driving mechanism; Fifth step, close the operation door, inflate the airtight belt, and complete the installation of the front and rear compartment tooling; Sixth step, adjust the stamping pressure of the airtight belt to make the pressure on the inner surface of the cockpit cover the lowest under the condition of meeting the requirement of the pressure difference between the front and rear compartments, and start the front and rear compartment loading test.

2. The compartmentation device for non-adhesive smooth wall boundaries according to claim 1, characterized in that, Compartment sealing block A and compartment sealing block B are provided below the airtight partition. The top contours of compartment sealing blocks A and B are parallel to the bottom outer edge contour of the airtight partition, and the side contours of compartment sealing blocks A and B are in contact with the corresponding positions on the inner surface of the cockpit cover.

3. The compartmentation device for non-adhesive smooth wall boundaries according to claim 2, characterized in that, A telescopic support driving mechanism is provided between the two compartment sealing blocks.

4. The compartmentation device for non-adhesive smooth wall boundaries according to claim 1, characterized in that, In the sealed state, the distance between the outer edge contour of the top of the airtight partition and the contour of the compartment interface is 10 mm.

5. The compartmentation device for non-adhesive smooth wall boundaries according to claim 1, characterized in that, The airtight belt is integrally in a mountain shape. The two side arms of the mountain shape are rigid arms, and the middle arm can extend outward in the inflated state.

6. The compartmentation device for non-adhesive smooth wall boundaries according to claim 1, characterized in that, The inflation pressure of the airtight belt is greater than 5 times the maximum pressure difference at the compartment during the test.

7. The compartmentation device for non-adhesive smooth wall boundaries according to claim 1, characterized in that, The radius of each turning point of the outer edge contour of the airtight partition is greater than 70 mm.

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