Design and construction method of a runway pool for aircraft flight testing

Abstract

The present invention provides a method for designing and constructing a runway pool for aircraft flight testing, relating to the technical field of aircraft flight testing. The method comprises: S1: pavement surveying; S2: determining the installation location; S3: overall layout design: designing the overall pool layout based on test requirements, aircraft aerodynamic layout, and pavement conditions, and designing the overall length and width of the pool; S4: pool structure design: utilizing a combination of gluing rubber preforms and inserting rubber belts into thermal expansion grooves; S5: material processing; S6: runway pavement construction: cleaning the runway pavement; S7: pool construction: gluing rubber preforms and inserting rubber belts into thermal expansion grooves to form the pool structure; S8: structural sealing: sealing the joints of the pool structure with structural adhesive. A pool designed and constructed using this method has no adverse effects on the runway structure during construction, use, and maintenance, is simple to maintain, easy to assemble and disassemble, highly reliable, and poses no additional resistance to aircraft tires.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft flight test, and in particular to a design and construction method of a runway pool for aircraft flight test. Background Art

[0002] Aircraft water splash-contaminated runway performance testing is a common aircraft flight test to verify that water splashed from landing gear tires during takeoff and landing on a flooded runway does not adversely affect the aircraft and its systems, and to obtain aircraft performance data. Airport runways are often built with a slope for rapid drainage, which prevents the runway surface from retaining water to a certain depth and results in uneven water depth distribution. This creates difficulties in creating the required water accumulation environment for the test, necessitating the construction of a pool on the runway to retain the required water depth and to properly control the water depth distribution to simulate the required water accumulation environment.

[0003] To minimize the impact on test airport operations, splash test pools are typically temporary test facilities, erected only during the test period and dismantled afterward. Installation of splash test pools should adhere to the principle of "non-destructiveness," meaning they must not cause irreversible damage to the runway. Furthermore, to minimize runway occupancy time, the pools should be quick to install and dismantle and easy to maintain. The pool structure should also not cause significant longitudinal impact on the aircraft when rolled over by the aircraft's landing gear and tires, nor produce significant drag that could impact performance data.

[0004] Existing splash pool technologies utilize a relatively simple structure, failing to meet the aforementioned requirements for rapid assembly and disassembly. To store water on the runway surface to simulate splash and contaminated runway test conditions, the industry often constructs sealed pool structures of defined lengths and widths by affixing various materials to the surface. Currently, common splash pool technologies fall into three main categories, depending on the installation method: those using a rubber belt-groove structure, those based on an adhesive-mounted structure, and those using a non-fixed installation.

[0005] 1. Pool technology based on rubber belt-groove structure

[0006] The rubber belt-groove pool solution utilizes grooves in the runway surface, inserting rubber belts into the grooves to form the pool structure. No adhesives or fasteners are used to connect the pavement and the pool structure. The dimensions of the rubber belt and the grooves are matched to prevent them from being dislodged by the aircraft's landing gear tires. Appropriate grooves must be cut into the runway surface for the rubber belt installation; if existing grooves are available, cutting is unnecessary. A flexible transport rubber belt with a fabric lining can be used for the rubber belt. When the tires pass over it, the rubber belts collapse, reducing the impact on the aircraft. Rubber belts are arranged horizontally and vertically to form the four sides of the pool. The interior of the pool is divided using the same pattern as needed. The horizontal and vertical rubber belts are connected using waterproof tape or fasteners.

[0007] This solution was first used in the 1960s. The initial implementation involved cutting 1-inch-deep and 5 / 16-inch-wide grooves into the runway pavement, inserting 17 / 64-inch-thick and 2.5-inch-wide rubber strips into the grooves to create a pool structure. In its initial application, the solution successfully supported hundreds of aircraft splash tests, demonstrating excellent durability.

[0008] 2. Pool technology based on adhesive installation

[0009] Adhesive-mounted pool construction technology uses adhesive to secure the pool material to the runway surface. Pool construction materials are categorized by cross-section into T-shaped and rectangular / semi-elliptical pieces. Rubber is typically used as the pool construction material. To provide a bonding surface, pool structures installed this way typically have a wide base. For T-shaped pool structures, the bonding occurs at the bottom edge of the T-shaped piece. The rubber structure is arranged horizontally and vertically along the runway to form the pool. Adhesive is used to connect the pool components, with adhesive or connectors used at intersections.

[0010] 3. Pool technology based on non-fixed installation

[0011] According to public information, the biggest difference between this type of water pool structure technology and the two aforementioned water pool structure technologies is that the installation / connection method used is designed for use in only one water splash taxiing test. When the landing gear tires roll over the water pool structure or the water pool structure is impacted by water splashing from the landing gear, the water pool material will be displaced, thereby avoiding any impact on the landing gear tires. The advantage of this structure is that the installation method is relatively simple. In the early days, the method adopted was to use concrete materials to build the water pool, and use clay materials to construct the areas where the lateral tires might roll over. Before the test, the water pool structure can effectively store water, and when the tires roll over the lateral structure, it will not produce excessive normal impact on the tire landing gear. This solution has been successfully used to simulate water splash taxiing tests of landing gear devices. The damaged parts need to be reconstructed after each test. Later, according to public information, lightweight foam materials were used as water pool structure materials in all positions. After replacement, the potential impact of landing gear tire rolling was reduced, and the aircraft water splash test was successfully supported.

[0012] The implementation paths of different water tank technologies determine the limitations of each technical solution. Furthermore, when examining existing water tank technical solutions, the requirements for reliable structure and relatively secure installation are often in conflict with those for quick maintenance, quick removal, and no impact on aircraft. This often leads to compromises in actual implementation to meet other requirements. The aforementioned water tank technologies still have the following issues:

[0013] 1. The pool structure based on rubber belt and groove installation features quick assembly and disassembly and easy maintenance. Installation and removal only require placing / removing the rubber belt from the corresponding groove. Damaged parts can be replaced with pre-made rubber belts. This structural design requires a pavement groove for installation. For installation locations where grooves do not exist, new grooves must be cut. The biggest problem is that the newly cut grooves change the original structure of the runway. The cutting process may cause the runway surface structure to fall off / peel off, causing damage to the pavement. After use, these grooves and the relevant runway pavement areas cannot be restored to their original state, resulting in potential adverse effects such as runway surface structure falling off and reduced strength that will continue to accompany the subsequent use of the runway. In addition, this installation method requires that the dimensions of the groove and rubber belt match each other. Excessive dimensional deviation during actual groove cutting will lead to installation failure or unreliable installation. In severe cases, the rubber belt will fall out of the groove during testing, affecting flight safety.

[0014] 2. Adhesive-installed pools do not alter the existing runway surface structure. For rectangular or semi-elliptical cross-section pools installed using this method, when the runway slope is steep, achieving the required water depth often requires increasing the pool height. Furthermore, the wider base of the pool structure results in significant longitudinal impact when the aircraft's landing gear tires roll over it, introducing interference during testing and affecting test results. In severe cases, this can lead to aircraft damage. Therefore, this pool technology introduces additional drag during contaminated runway performance testing, interfering with aircraft performance data. Furthermore, the adhesive cures over a long period of time, requiring dry conditions and requiring a long installation period on the runway. Repairs require draining the pool and waiting for the runway surface and pool structure to completely dry, making installation and removal inconvenient. To avoid damage to the runway, manual removal of the pool structure is necessary, which is inefficient and requires significant runway time. For T-shaped pool structures, there is a potential risk of joints breaking or falling apart due to rolling pressure. The pool structure material may be sucked into the engine after it falls off, so it should be avoided as much as possible.

[0015] The non-fixed installation of the water pool structure has no negative impact on the runway surface structure. However, due to its installation method, the water pool can be damaged or detached when the aircraft taxis over it or when the landing gear tires transmit disturbances to the water pool. This poses a risk of being ingested by the engine intake or damaging the aircraft structure. Furthermore, this water pool structure can only support a single splash test, requiring repairs after each taxi, reducing test efficiency.

[0016] In view of the above reasons, the present invention proposes a design and construction method for a runway pool for aircraft flight tests. The construction, use and maintenance of the pool will not cause irreversible damage to the runway structure, will not generate additional resistance to aircraft tires, and is easy to disassemble and maintain, and the runway occupancy time is short. Summary of the Invention

[0017] The present invention aims to provide a design and construction method for a runway pool for aircraft flight testing. The construction, use, and maintenance of the pool structure constructed by this construction method have no adverse effects on the runway structure, are simple to maintain, are easy to assemble and disassemble, have uniform water depth distribution, have good reliability, and do not generate additional resistance to aircraft tires.

[0018] The present invention provides a design and construction method for a runway pool for aircraft flight testing, comprising:

[0019] S1: Runway surface mapping: After determining the test airport, measure the runway surface slope;

[0020] S2: Determine the installation location: Determine the installation location of the pool based on the runway surface slope and surface conditions;

[0021] S3: Overall layout design: Carry out the overall layout design of the water pool according to the test requirements, aircraft aerodynamic layout, and runway conditions. The overall length and width of the water pool are designed, and the water pool is divided into three water channels along the runway heading to accommodate the nose wheel and two main wheels respectively.

[0022] S4: Pool Structural Design: Rubber prefabricated components are bonded to the sides of the runway centerline along the middle waterway. Rubber bands are inserted into thermal expansion slots along the runway's direction along the waterway's direction. Multiple gratings are installed along the span of the runway to properly control the water depth. The gratings are inserted into multiple thermal expansion slots along the span of the runway using rubber bands.

[0023] S5: Material processing: Production of rubber preforms and rubber belts in the factory;

[0024] S6: Runway pavement construction: clean the runway pavement, apply special primer on both sides of the middle waterway in the direction of the runway, and seal the pavement drainage grooves;

[0025] S7: Pool construction: Use sealant to bond the rubber preforms to the sides of the middle waterway. Insert the rubber belts into the thermal expansion grooves in the heading and span directions to define the edges of the waterways and the grid on both sides. The rubber preforms and rubber belts are connected to form the pool structure.

[0026] S8: Structural sealing: The junctions between the rubber belts, rubber prefabricated parts and the runway are sealed with structural adhesive, and the rubber belts are sealed with adhesive.

[0027] Preferably, in step S3

[0028] The length of the pool ≥ maximum test speed * sliding time in the pool;

[0029] The width of each waterway is ≥ 3 times the width of the landing gear tires in the waterway.

[0030] Preferably, the cross section of the rubber preform in step S4 is trapezoidal or semi-elliptical.

[0031] Preferably, in step S4, the shape of the rubber belt is rectangular.

[0032] Preferably, for a dual-wheel or trolley-type landing gear, the width of each water channel is not less than 3 times the distance between the outer end surfaces of the two tires.

[0033] Preferably, the central axis of the middle waterway coincides with or is parallel to the center line of the runway.

[0034] Preferably, the cleaning of the runway surface in step S6 includes removing dirt and dust from the bonding surfaces of the two rubber preforms on the runway surface heading direction with a wire brush, and blowing away floating dust with a fan.

[0035] Preferably, step S6 further includes clearing out the inserts in the thermal expansion groove and trimming the edges of the thermal expansion groove.

[0036] Preferably, in step S8, the junctions between the rubber belt and the rubber preform and the runway are sealed by bonding with silicone structural adhesive.

[0037] Preferably, in step S8, the rubber strips are bonded together using waterproof tape.

[0038] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0039] 1. Easy to assemble and disassemble. Modern airport runways are mostly made of cast concrete, with thermal expansion slots reserved at fixed intervals along the span and heading directions. The pool design and construction method of the present invention utilizes a rational pool layout and optimizes the width of the front wheel and main wheel waterways. This allows the thermal expansion slots to be used to install the rubber belts in a larger portion of the pool structure. The remaining pool structure arranged along the heading direction of the front wheel is bonded to the runway surface using prefabricated rubber parts. Most of the pool structure of the present invention adopts a slot installation method, which is characterized by easy assembly and disassembly. The bonding part requires minimal construction, reducing runway occupancy and installation and disassembly time.

[0040] 2. Easy maintenance. Most pool structures are installed in a slot-type manner. If damaged, simply pull out the rubber belt and replace it. Maintenance is relatively simple. The bonding part accounts for a small proportion and is not normally crushed by the aircraft landing gear tires, so there will be no maintenance problems. This reduces the overall maintenance time and difficulty of the pool.

[0041] 3. Little impact on the pavement structure. The slot installation position utilizes the original thermal expansion slot of the runway. The adhesive installation position does not change the runway pavement structure after removal, avoiding the potential adverse effects of using only slot installation on pavement cutting.

[0042] 4. The test results are minimally impacted. The transverse water pool structure, constructed using rubber belts, collapses after being rolled over by the tires, resulting in no longitudinal or normal impact on the aircraft. This avoids the normal impact of the overall bonding solution on the aircraft, and does not introduce additional resistance to aircraft performance in the heading direction, minimizing interference factors in the test. Separation is provided for the main wheels and nose wheels to form three water channels to eliminate mutual influence between splash tests of different landing gears. Each water channel is separated by a grid to ensure the water depth of the pool, making it suitable for splash tests at greater depths. The water depth in different areas is uniform, preventing the test structure from being affected by water depth issues. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A flow chart of the pool design and construction method of the present invention;

[0045] Figure 2 It is a schematic diagram of the composition and arrangement of the water pool structure in the present invention;

[0046] Figure 3 This is a schematic diagram of the coordination between the rubber belt and the thermal expansion groove in the present invention;

[0047] Figure 4 2 is a cross-sectional view of the rubber preform used in this embodiment.

[0048] Description of reference numerals:

[0049] 1, 2: rubber preforms; 3, 4, 5, 6, 7: rubber belts. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "span", "heading", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0053] This embodiment provides a design and construction method for a runway pool for aircraft flight testing. This method ensures that the runway structure will not be adversely affected during the construction, use, maintenance, and removal of the pool. Furthermore, the pool structure is simple to maintain and easy to assemble and disassemble. The water depth is evenly distributed throughout the pool area. During use, the pool should provide good reliability and will not break or fall off after being run over by aircraft tires, nor will it generate additional resistance.

[0054] like Figure 1 As shown, the above-mentioned pool design and construction method includes the following steps:

[0055] S1: Runway surface surveying: After the test airport is determined, the runway surface slope is measured and the runway surface condition is surveyed;

[0056] S2: Determine the installation location: Determine the installation location of the pool based on the runway surface slope and surface conditions;

[0057] S3: Overall layout design: The overall layout design of the water tank is carried out according to the test requirements, the aircraft aerodynamic layout, and the runway conditions. The overall length and width of the water tank are designed, and the water tank is divided into three water channels along the runway heading, respectively for accommodating the front wheel and the two main wheels. The middle water channel is used for taxiing of the front wheel, and the water channels on both sides are used for taxiing of the left and right main wheels respectively, to eliminate the mutual influence of splashing from different landing gears. The length of the water tank for the splash test can be determined based on the distance required for the test aircraft to taxi in the water tank at the maximum test speed for a period of time. If the engine is affected by splashing, it should be considered whether the water tank length can meet the engine's response / adjustment time. The overall width of the water tank should at least include the projection of the engine nacelle on the ground.

[0058] S4: Pool structure design: The pool structure is installed by a combination of rubber belt slots and rubber prefabricated parts. Modern airport runways are usually constructed of concrete. Concrete runways are equipped with thermal expansion grooves along the span and heading directions to release stress. The expansion grooves are usually arranged at fixed intervals (for example, 5 meters). By optimizing the pool layout and matching the existing thermal expansion groove positions of the runway, the span-wise layout of the pool structure can be installed using slots to avoid a large impact after being rolled over by the landing gear tires. Figure 2 As shown, the pool structure is arranged symmetrically along the runway heading, with its center line coincident with the runway center line. The two sides of the middle waterway along the runway heading (i.e. Figure 2 The thick solid line) is connected and pasted on both sides of the center line of the runway by rubber prefabricated parts 1 and 2, and the edges of the waterways on both sides of the runway are connected and pasted on both sides of the center line of the runway. Figure 2 The thin solid lines on the upper and lower edges (in the middle) use rubber belts 6 and 7 to be inserted into the thermal expansion grooves located in the runway heading direction, forming the heading edge of the water pool structure. The position of the outermost water pool structure can be adjusted according to the runway conditions and the position of the thermal expansion grooves. Multiple grids are set inside the water pool along the runway span to reasonably control the water depth. The grids use rubber belts 3, 4, and 5 to be inserted into multiple thermal expansion grooves in the runway span direction. The intersections of rubber belts 3, 4, and 5 with rubber preforms 1 and 2 are seamlessly connected. The multiple grids minimize the change in water depth along the heading direction, that is, ensure the uniformity of the water depth. The above-mentioned water pool structure can adapt to splash tests with greater water depths. The relative positions of different water pool structures are planned according to the actual layout of the aircraft landing gear tires and the distribution of thermal expansion grooves on the runway surface. By rationally planning the position of the water pool structure, most of the water pool structure can be installed using the runway thermal expansion grooves, and the remaining positions can be installed using bonding. This achieves the purpose of having no adverse effects on the runway structure and test results, and is simple to assemble and disassemble and easy to maintain.

[0059] S5: Material Processing: Rubber preforms and rubber belts are produced in the factory. The materials and specifications must ensure that the water tank can meet the water storage depth required for the test, while avoiding adverse effects caused by aircraft tires running over them.

[0060] S6: Runway pavement construction: Clean the runway pavement, remove dirt and dust from the bonding surfaces of the two rubber prefabricated parts on the runway pavement with a wire brush, and use a blower to blow away the floating dust. Apply a special primer on both sides of the water channel in the middle of the runway, and seal the pavement drainage grooves;

[0061] S7: Pool construction: Use sealant to bond rubber preforms to both sides of the middle waterway. Insert rubber belts into the thermal expansion grooves in the heading and span directions to define the waterway edges and grid positions on both sides. Connect the rubber preforms and rubber belts to form the pool structure.

[0062] S8: Structural sealing: Structural adhesive is used to seal the intersection of the rubber belt and the rubber prefabricated parts with the runway. The rubber belts are glued and sealed to effectively control leakage. After the water pool is filled with water, the rubber belt will tilt outward to a certain extent, further compacting the seal between the thermal expansion tank and the rubber belt.

[0063] Specifically, in step S3, the length of the water pool must be ≥ maximum test speed * taxiing time within the pool; the width of each water channel must be ≥ three times the width of the landing gear tires within the water channel. For dual-wheel or trolley-type landing gear, the width of each water channel must be no less than three times the distance between the outer end faces of the two tires. In this embodiment, based on the principle that the overall length of the water pool should be sufficient to meet the taxiing time required for the test aircraft at the maximum test speed, the total length of the water pool is determined to be 100 meters, allowing the test aircraft to taxi within the pool for 1.5 seconds at a speed of 120 knots (approximately 62 meters per second). The total width is 30 meters, which includes the projection of the engine nacelle on the ground. To minimize the impact of the road surface slope on water depth, dividers are provided along the heading and span directions of the water pool. There are three dividers along the span direction and ten dividers along the heading direction. By rationally planning the divider distances, the water depth at the landing gear tires can be effectively controlled. With the exception of the central water pool along the heading direction for nose wheel testing, which is installed using adhesive bonding, the remaining water pool structures can all be installed using a rubber band inserted into a thermal expansion tank.

[0064] Specifically, the rubber preform in step S4 is made by vulcanization and splicing in sections. In order to reduce the impact of accidental tire rolling on the dam, its cross section is designed to be trapezoidal or semi-elliptical, such as Figure 4 As shown. For the bonding of rubber prefabricated components, the runway surface must be cleaned before construction. The two bonding surfaces of the runway surface must be cleaned of dirt and dust with a wire brush. A fan must be used to blow away any loose dust. A special primer must be applied, and then a polysulfide sealant must be applied to seal the drainage grooves. The rubber prefabricated components must then be bonded and sealed to the runway surface using silicone structural adhesive. Silicone structural adhesive must also be used to bond and seal the rubber prefabricated components to each other, thus forming a pool structure. Good straightness must be maintained after bonding the rubber prefabricated components.

[0065] The shape of the rubber belt in step S4 is rectangular, and the rubber belt is installed using a slot method. A rubber belt with a thickness of about 7mm is used, and there are two specifications for width: 13cm and 16cm. The material is a fiber-reinforced transport rubber belt. The width of the thermal expansion tank is 8mm and the depth is 30mm. In order to ensure that the water pool can meet the water storage depth required by the test and to avoid adverse effects after being crushed by the aircraft tires, the height of the rubber belt in the tire crushing area should be optimized. The rubber belt arranged along the heading direction passes through the water pool, and the rubber belt arranged along the span direction is divided at the junction with the heading pool structure. The rubber belts of the waterways on both sides arranged along the span direction are 13cm wide to ensure that they can quickly fall over after being crushed by the tires. As Figure 3As shown, sealant is used to seal the gap between the rubber belt and the thermal expansion groove, and waterproof tape is used to stick the rubber belts together. By using silicone structural adhesive to seal the joint between the thermal expansion groove and the rubber belt on the side of the pool rubber belt, leakage can be effectively controlled. After the pool is filled with water, the rubber belt will tilt outward to a certain extent, further compacting the seal between the thermal expansion groove and the rubber belt.

[0066] In this embodiment, step S6 also includes clearing out the embedded materials in the thermal expansion groove before the test, and using construction machinery to trim the edges of the thermal expansion groove as needed, trimming the expansion groove size to 8 mm wide and 30 mm deep, and then inserting the rubber belt into the thermal expansion groove to form a pool structure. For a 13 cm wide rubber belt, the entire portion exposed on the runway surface after installation should not exceed 10 cm, and wrinkles and bends should be avoided on the surface after the rubber belt is installed.

[0067] After construction was complete, the pool was filled with water, and the water depth met the expected requirements. The measured leakage rate was approximately 1mm / 10 minutes. After dozens of rolls, the pool remained intact, demonstrating its high reliability. After the pool was dismantled, the thermal expansion tank was backfilled. The runway structure remained consistent with its pre-use structure, and inspection revealed no damage to the pavement.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A design and construction method for a runway pool for aircraft flight testing, characterized in that: include: S1: Runway surface mapping: After determining the test airport, measure the runway surface slope; S2: Determine the installation location: Determine the installation location of the pool based on the runway surface slope and surface conditions; S3: Overall layout design: Carry out the overall layout design of the water pool according to the test requirements, aircraft aerodynamic layout, and runway conditions. The overall length and width of the water pool are designed, and the water pool is divided into three water channels along the runway heading to accommodate the nose wheel and two main wheels respectively. S4: Pool Structural Design: Rubber prefabricated components are bonded to the sides of the runway centerline along the middle waterway. Rubber bands are inserted into thermal expansion slots along the runway's direction along the waterway's direction. Multiple gratings are installed along the span of the runway to properly control the water depth. The gratings are inserted into multiple thermal expansion slots along the span of the runway using rubber bands. S5: Material processing: Production of rubber preforms and rubber belts in the factory; S6: Runway pavement construction: clean the runway pavement, apply special primer on both sides of the middle waterway in the direction of the runway, and seal the pavement drainage grooves; S7: Pool construction: Use sealant to bond the rubber preforms to the sides of the middle waterway. Insert the rubber belts into the thermal expansion grooves in the heading and span directions to define the edges of the waterways and the grid on both sides. The rubber preforms and rubber belts are connected to form the pool structure. S8: Structural sealing: The junctions between the rubber belts and rubber prefabricated parts and the runway are sealed with structural adhesive, and the rubber belts are sealed with adhesive.

2. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: In step S3 The length of the pool ≥ maximum test speed * sliding time in the pool; The width of each waterway is ≥ 3 times the width of the landing gear tires in the waterway.

3. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: In step S4, the cross section of the rubber preform is trapezoidal or semi-elliptical.

4. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: In step S4, the shape of the rubber band is rectangular.

5. The design and construction method of a runway pool for aircraft flight testing according to claim 2, characterized in that: For dual-wheel or trolley-type landing gear, the width of each waterway shall not be less than 3 times the distance between the outer end faces of the two tires.

6. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: The central axis of the middle waterway coincides with or is parallel to the center line of the runway.

7. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: Cleaning the runway surface in step S6 includes removing dirt and dust from the bonding surfaces of the two rubber preforms on the runway surface heading direction with a wire brush, and blowing away floating dust with a fan.

8. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: Step S6 also includes clearing out the inserts in the thermal expansion groove and trimming the edges of the thermal expansion groove.

9. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: In step S8, the junctions between the rubber belt and the rubber preform and the runway are sealed by bonding with silicone structural adhesive.

10. The design and construction method of a runway pool for aircraft flight testing according to claim 1, characterized in that: In step S8, the rubber strips are bonded together using waterproof tape.

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