CN110499690B - Movable runway based on shear thickening non-Newtonian fluid - Google Patents
Movable runway based on shear thickening non-Newtonian fluid Download PDFInfo
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- CN110499690B CN110499690B CN201910804002.9A CN201910804002A CN110499690B CN 110499690 B CN110499690 B CN 110499690B CN 201910804002 A CN201910804002 A CN 201910804002A CN 110499690 B CN110499690 B CN 110499690B
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- newtonian fluid
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- 239000012530 fluid Substances 0.000 title claims abstract description 39
- 230000008719 thickening Effects 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 230000003044 adaptive effect Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 239000007791 liquid phase Substances 0.000 abstract description 4
- 239000007790 solid phase Substances 0.000 abstract description 3
- 239000011162 core material Substances 0.000 abstract 3
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- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
- E01C9/08—Temporary pavings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a movable runway based on shear thickening non-Newtonian fluid and a laying method thereof, belonging to the field of aviation. A movable temporary runway taking shear thickening non-Newtonian fluid as an inner core is provided by combining the 'solid' characteristic of the shear thickening non-Newtonian fluid under high-speed shearing with the 'liquid' characteristic of the shear thickening non-Newtonian fluid under low-speed shearing or at rest. The aircraft runway selects shear thickening non-Newtonian fluid as the core material. The runway has the advantages that the gliding speed is high in the initial landing stage and the flying off-ground stage of the airplane, large shearing force is applied to the runway, the runway becomes a solid phase capable of supporting the sliding of the airplane, the flying speed is low in the later landing stage, the shearing force applied to the runway by the airplane is small, the runway core becomes a liquid phase, the speed of the airplane can be rapidly reduced, the sliding distance is shortened, the contact surface between the runway and the ground can show good fluidity, and the runway can adapt to the uneven road surface condition.
Description
Technical Field
The invention belongs to the field of aviation, and particularly relates to a movable runway based on shear thickening non-Newtonian fluid.
Background
The safe take-off and landing of an aircraft are closely related to a runway. At present, the construction project of the conventional runway in the world consumes long time and has high cost, however, under certain specific conditions, the use frequency of the runway is very low, and the construction of the permanent runway can meet the requirements, but can cause great waste of resources and funds. Meanwhile, for unmanned aerial vehicles which are rapidly developed and widely applied, strict limitation of permanent runways to places greatly influences the use flexibility and application popularization of aircrafts. In some environments, such as unmanned areas, polar regions, islands, deserts and other regions with rare occurrence, aircrafts become main tools for collecting, surveying and transporting supplies, most of fixed-wing aircrafts need to take off and land on runways, in the environments, the aircrafts have short mission execution time periods and less take-off and land times, and the movable temporary runways can realize the maximum utilization of resources, thereby greatly reducing the cost for constructing the conventional runways. The runway not only provides convenient conditions for taking off and landing of the aircraft, but also can reduce land resource waste and ecological environment damage caused by building a permanent runway.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a movable runway based on shear thickening non-Newtonian fluid and a laying method thereof by combining the special characteristics of the manufacture of the runway and the shear thickening non-Newtonian fluid. Compared with the traditional runway, the runway has the characteristics of low cost, mobility and convenience in construction, so that the runway has a wide application prospect.
The invention adopts the following specific technical scheme:
an airstrip based on shear thickening non-Newtonian fluid comprises a main runway and an auxiliary runway, wherein the main runway and the rigid auxiliary runway are continuously connected; the main runway is formed by continuously assembling a plurality of assembled modules on a ground plane; the assembled module comprises an inner bag module and an outer bag package, wherein the inner bag module is a cuboid block, the interior of the inner bag module is filled with a shear thickening non-Newtonian fluid filler (5), the outer bag package comprises a flat upper surface and a self-adaptive lower surface, the flat upper surface is made of a wear-resistant material and is flatly laid on the whole top surface of the inner bag module; the self-adaptive lower surface is made of flexible materials and is padded between the bottom of the inner bag module and the ground.
Preferably, the shear thickening non-Newtonian fluid filling is a porous medium, preferably foamed steel, foamed aluminium or foamed plastic.
Preferably, the flat upper surface is made of rubber.
Preferably, the adaptive lower surface is made of rubber.
Preferably, the auxiliary runway is built by flat rigid plates.
Preferably, the flat rigid plate is a steel plate.
Preferably, all the modules of the whole runway are detachably assembled.
Preferably, the top surfaces of the main and auxiliary runways should remain flat and continuous.
Compared with the prior art, the whole runway is formed by assembling a certain number of detachable inner bag modules, and the modular sectional layout mode enables the runway to be highly replaceable and reduces the difficulty in repairing the runway. The invention firstly proposes to use the shear thickening non-Newtonian fluid to replace the traditional cement and steel bar runway, creatively combines the characteristics of the non-Newtonian fluid with the requirements of the airplane during taking off and landing, and automatically adjusts the rigidity of the runway. The shear thickening non-Newtonian fluid filler has the characteristics of strong in case of strong force and soft in case of static force, and is ingeniously applied to the support property of the upper surface of the runway and the fusion property of the lower surface and the ground environment in the working process.
The invention can be used as a temporary runway, can automatically adjust the rigidity of the runway according to the running speed of the aircraft and the self characteristics of the shear thickening fluid, and provides enough supporting force to help flying in the takeoff acceleration stage of the aircraft; and in the deceleration landing stage, the friction force of the runway is automatically increased, and the running distance is shortened.
The simple runway can be laid quickly in different geographic environments at any time according to needs, the concept of the traditional runway is overturned, and the simple runway has the characteristics of low cost, mobility, quickness and convenience. The runway can be paved in islands, polar regions, deserts and other zones, and has a self-adaptive function, so that the requirement on paving the ground surface is low, and the runway only needs to be paved on a relatively flat ground. The whole simple runway is loaded and unloaded in a modularized mode, and temporary runways with different lengths and widths can be laid according to the requirements of the airplane.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a mobile airstrip based on a shear thickening non-Newtonian fluid;
FIG. 2 is a schematic structural diagram of an assembled module;
FIG. 3 is a diagram of the effects of a non-Newtonian fluid runway application scenario (polar region);
FIG. 4 is a diagram of non-Newtonian fluid runway application scenario effects (desert);
in the figure: an inner bag module 1, an outer bag package 2, an auxiliary track 3, a flat upper surface 4, a shear thickening non-Newtonian fluid filler 5, a self-adapting lower surface 6.
Detailed Description
The invention will be further elucidated and described with reference to the drawings and the detailed description. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
In this embodiment, a shear thickening non-newtonian fluid based mobile airstrip structure is shown in fig. 1, comprising a main runway and an auxiliary runway 3, the main runway and the auxiliary runway 3 being continuously contiguous. The auxiliary runway 3 is used for a transition section when the speed of the aircraft in the initial takeoff stage and the later landing stage is low, and the main runway is used for a working section when the speed of the aircraft in the later takeoff stage and the initial landing stage is high. The length of the entire simple runway depends on the total weight and size of the aircraft and the local geographical environment; the width of the runway depends on the wingspan of the aircraft and the wheel track of the main landing gear, and the aircraft is ensured not to deviate from the runway during take-off, landing and running. The respective relative lengths of the main runway and the auxiliary runway 3 can be adjusted according to actual needs.
The assembled module in this embodiment includes an inner bladder module 1 and an outer bladder wrap 2. As shown in fig. 2, the inner bag module 1 is a block in a rectangular parallelepiped shape, and a bag is arranged outside the block, and a shear thickening non-newtonian fluid filler 5 is filled inside the bag, the bag may be made of a wear-resistant impermeable cloth or other flexible materials, and the shear thickening non-newtonian fluid filler 5 may be made of a porous medium to ensure that the non-newtonian fluid is uniformly distributed, preferably made of foam steel, foam aluminum, or foam plastic. The outer bladder wrap 2 comprises a flat upper surface 4 and a compliant lower surface 6. The flat upper surface 4 is made of wear-resistant materials and is flatly laid on the whole top surface of the inner bag module 1; the self-adaptive lower surface 6 is made of flexible materials and is padded between the bottom of the inner bag module 1 and the ground. The flat upper surface 4 is used as a support surface for the runway, and should have certain wear resistance and friction force to facilitate the gliding of the airplane. The adaptive lower surface 5 of the runway is used for providing further foundation adaptive capacity, is made of an adaptive material with certain flexibility and is suitable for different road conditions. In this embodiment, the flat upper surface 4 and the adaptive lower surface 6 are made of rubber, but considering their functions, the flat upper surface 4 may be made of hard rubber, and the adaptive lower surface 6 may be made of soft rubber.
In the invention, the main runway is formed by splicing a plurality of assembled modules on the ground plane, and in order to ensure the smoothness of the runway, the adjacent assembled modules are spliced continuously, so that overlarge gaps cannot be formed, and the taking-off and landing safety of an airplane is ensured. The auxiliary runway 3 is generally constructed by flat rigid plates (such as steel plates) and is used for a transition section of an airplane at a low speed in the initial takeoff stage and the later landing stage, and the auxiliary runway can be bent and laid according to a sliding route.
In the invention, the non-Newtonian fluid runway has two phases, and the viscosity of the shear thickening non-Newtonian fluid used in the method is greatly changed under high-speed impact, and is increased in an order of magnitude trend and is changed from a liquid phase to a solid phase; when the impact disappears, the liquid phase is quickly recovered, and the process has reversibility. Therefore, the runway has high sliding speed and high shearing force to the runway in the initial landing stage and the off-ground landing stage, the runway becomes a solid phase capable of supporting the sliding of the airplane, the flying speed is low in the later landing stage, the shearing force to the runway by the airplane is low, the core of the runway becomes a liquid phase, the speed of the airplane can be rapidly reduced by the runway, and the sliding distance is shortened. In order to solve the problems that the initial takeoff speed is low, the shearing force is low and the non-Newtonian main runway cannot support the airplane, a rigid auxiliary runway 3 is arranged, and the auxiliary airplane slides into the main runway paved with the shear thickening non-Newtonian fluid after reaching a certain sliding speed, so that the takeoff is smoothly finished.
In the invention, the runway made of the shear thickening non-Newtonian fluid can provide enough supporting force for the take-off and landing of an aircraft, and meanwhile, the non-Newtonian fluid shows good fluidity in a non-working state. The non-Newtonian fluid raw material can be selected from environment-friendly materials, and basically cannot affect the environment and ecology.
Because the runway adopts the modularized design, the segmentation overall arrangement, therefore the main part of main runway can be laid according to concrete demand in a flexible way, and after finishing using, interior bag module 1 can be taken out to outer bag packing 2 can be rolled up and folded, is convenient for receive and release and transport, and interior bag and outer bag all repeatedly usable. On the other hand, each section of the runway designed in a sectional mode has replaceability, so that the maintenance cost of the runway is reduced, the repair capability of the runway is enhanced, only a module with problems is replaced, the threat to the aircraft caused by damage to the runway is reduced to the maximum extent, and a good pavement guarantee system is provided for the aircraft.
The non-Newtonian fluid manufacturing raw materials and the outer packing structural materials of the runway have low cost, the used principle is scientific and reliable, the manufacturing process is simple and easy to implement, the manufacturing raw materials are cheap and easy to obtain, and even the runway can be manufactured on site. And the movable characteristic enables the material to be reused, further reducing the cost. On the other hand, the temporary movable runway can greatly save land resources and realize the maximum utilization of the resources.
The runway can be used in various complex terrains such as unmanned areas, islands, deserts and polar regions, and is small in regional limitation, so that the unmanned aerial vehicle can be used in various complex environments. As shown in fig. 3 and 4, the application effect of the non-newtonian fluid runway in the zones of polar region fig. 3 and desert region fig. 4 respectively is shown. The design of the movable simple runway can greatly enrich the diversity of the current runway system, and the characteristics of low cost, movability and simplicity have wide application prospect.
The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.
Claims (4)
1. A movable runway for aircrafts based on shear thickening non-Newtonian fluids, characterized in that it comprises a main runway and a rigid auxiliary runway (3), the main runway and the auxiliary runway (3) are connected continuously; the main runway is formed by continuously assembling a plurality of assembled modules on the ground; the assembled module comprises an inner bag module (1) and an outer bag package (2), wherein the inner bag module (1) is a cuboid block, a shear thickening non-Newtonian fluid filler (5) is filled in the inner bag module, the outer bag package (2) comprises a flat upper surface (4) and a self-adaptive lower surface (6), the flat upper surface (4) is made of wear-resistant materials and is flatly laid on the whole top surface of the inner bag module (1); the self-adaptive lower surface (6) is made of flexible materials and is padded between the bottom of the inner bag module (1) and the ground; the shear thickening non-Newtonian fluid filler (5) adopts a porous medium which is foam steel, foam aluminum or foam plastic; the flat upper surface (4) is made of rubber; the adaptive lower surface (6) is made of rubber; the auxiliary runway (3) is built by flat rigid plates.
2. The mobile airstrip based on shear-thickening non-newtonian fluid of claim 1, wherein the flat rigid plate is a steel plate.
3. The mobile runway for an aircraft based on shear thickening non-newtonian fluids of claim 1, wherein the modules of the entire runway are removably assembled.
4. Mobile airstrip based on shear thickening non-newtonian fluids according to claim 1, characterized in that the top surface of the main and auxiliary runways (3) should remain flat and continuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910804002.9A CN110499690B (en) | 2019-08-28 | 2019-08-28 | Movable runway based on shear thickening non-Newtonian fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910804002.9A CN110499690B (en) | 2019-08-28 | 2019-08-28 | Movable runway based on shear thickening non-Newtonian fluid |
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| Publication Number | Publication Date |
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| CN110499690A CN110499690A (en) | 2019-11-26 |
| CN110499690B true CN110499690B (en) | 2020-06-30 |
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| CN201910804002.9A Active CN110499690B (en) | 2019-08-28 | 2019-08-28 | Movable runway based on shear thickening non-Newtonian fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111472226A (en) * | 2020-04-29 | 2020-07-31 | 无锡市政设计研究院有限公司 | non-Newtonian fluid pillow bag and method for temporarily repairing pavement by using same |
| CN115871948B (en) * | 2023-02-17 | 2023-06-06 | 秦皇岛优益创联特种车辆制造有限公司 | Motor aircraft runway |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9476164B2 (en) * | 2014-09-19 | 2016-10-25 | Quality Mat Company | Industrial mat having side bumpers and lifting elements |
| CN205856962U (en) * | 2016-07-29 | 2017-01-04 | 龙军 | A kind of spliced runway |
| CN206090212U (en) * | 2016-09-29 | 2017-04-12 | 梁红才 | Composite road engineering cover plate |
| CN107386044B (en) * | 2017-08-28 | 2019-05-03 | 康雪芳 | The mobile horizontal runway of aggregation type |
| CN107806024A (en) * | 2017-11-21 | 2018-03-16 | 陈庆寿 | Interim deceleration strip based on non-newtonian fluid |
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