CN116002068B - Impact water-entering sliding track of water high-speed dragging system and design and use method thereof - Google Patents
Impact water-entering sliding track of water high-speed dragging system and design and use method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of cross-medium aircraft test devices, and discloses an impact water-entering sliding track of a water high-speed dragging system and a design and use method thereof. The device comprises an impact water-entering sliding track body, an inflatable air bag, an inflator pump and an inflatable pipeline. The impact water-entering sliding track body bears the gravity load of the aircraft test model and the steel structure track, and the buoyancy generated by the inflatable air bags in the water lightens the load of the rotating support in the water high-speed dragging system and the driving load of the hydraulic rod, so that the angle control precision of the impact water-entering sliding track and the safety of the water high-speed dragging system are improved. The design method comprises the steps of determining the size of the impact water-entering sliding track body, determining the layout quantity of the inflatable air bags, and determining the power of the inflator pump and the size of the inflatable pipeline. The use method comprises the steps of installing an impact water inlet sliding track body, setting an included angle of the water surface of the impact water inlet sliding track body, inflating an inflatable airbag, and carrying out impact water inlet and water outlet sliding tests and daily maintenance.
Description
Technical Field
The invention belongs to the technical field of cross-medium aircraft test devices, and particularly relates to an impact water-entering sliding track of a water high-speed dragging system and a design and use method thereof.
Background
The water high-speed towing system is test equipment for developing a motion process for simulating water inlet and water outlet of a cross-medium aircraft by impact, and a motion mechanism of the water high-speed towing system drives an aircraft test model to impact water inlet and water outlet at a certain speed. The orbit angle and the attitude angle of the water outlet of the aircraft test model are respectively adjustable within a certain range. In the water inlet and outlet process, parameters such as impact load, deformation and medium separation surface morphology of the aircraft test model are synchronously measured, and data support is provided for development of the cross-medium aircraft.
The impact water inlet sliding track is used as a carrier of the aircraft test model and is responsible for guiding the aircraft test model to impact water inlet and outlet and subsequent sliding movement, the structure of the impact water inlet sliding track needs to have a longer scale, and the mechanical performance needs to ensure high rigidity so as to reduce the bending curvature and the descending deflection of the long-distance track. Meanwhile, in order to meet the requirement of adjusting the water inlet and outlet orbit angle of the aircraft test model, the impact water inlet sliding orbit needs to have a function of rotating around a point.
At present, the impact water-entering sliding rails of the water high-speed dragging system are all driven by hydraulic rods, and fixed supports are arranged at the edges of the rail cars and serve as sliding rail rotating points. Due to the characteristics, in order to realize the adjustment of the included angle between the impact water-entering sliding rail and the horizontal plane within the range of 30-90 degrees, the impact water-entering sliding rail with a longer distance is required, and the pressure load of the rotating point support is increased, so that the control precision of the impact water-entering sliding rail and the safety of a water high-speed dragging system are threatened. Therefore, how to effectively reduce the effect of gravity load of long-distance impact water-entering sliding rails on the hydraulic rods and the rotary support is an urgent problem to be solved by the water high-speed towing system.
Currently, there is a need to develop an impact water-entry skid rail for a water high-speed towing system and a design and use method thereof.
Disclosure of Invention
The invention provides a design method of an impact water-entering sliding rail of a water high-speed dragging system, and the invention further provides a use method of the impact water-entering sliding rail of the water high-speed dragging system, which is used for overcoming the defects of the prior art.
The invention relates to an impact water-entering sliding rail of a water high-speed dragging system, which is characterized in that the impact water-entering sliding rail device comprises an impact water-entering sliding rail body, an inflatable airbag, an inflatable pump and an inflatable pipeline;
the impact water inlet sliding track body is integrally of a door-shaped frame structure with a closed top surface and an open bottom surface and symmetrical two sides; a steel structure rail is arranged on the upper surface of the top surface along the length direction of the door-shaped frame, and the aircraft test model vehicle slides along the steel structure rail to perform water outlet and water inlet movements; the top surface and the side surfaces of the two sides are enclosed to form a rectangular cavity, a plurality of parallel partitions are arranged in the cavity to divide the rectangular cavity into a plurality of mutually communicated compartments, and two symmetrical inflatable air bags which are arranged in parallel are arranged in each compartment; the front section of the upper surface of the top surface is also provided with an inflator pump, an inflation pipeline of the inflator pump extends into the rectangular cavity, and the lower surface of the top surface extends backwards to the rear section of the door-shaped frame along the length direction of the door-shaped frame, and the inflation pipeline inflates the inflation air bags in each compartment along the way; a pressure sensor is arranged in each inflatable air bag.
Furthermore, the impact water-entering sliding track body is formed by welding stainless steel plates.
Further, the impact water-entering sliding track body is connected with the inflatable air bag through a fastening bolt.
Further, the material of the inflatable air bag and the inflatable pipeline is organic rubber.
The invention relates to a design method of an impact water-entering sliding track of a water high-speed towing system, which comprises the following steps:
s51, determining the size of the impact water-entering sliding track body
Determining the required outline dimension of the impact water inlet sliding track body according to the requirement of the impact water inlet and water outlet sliding test of the aircraft test model;
s52, determining the layout number of the inflatable air bags
According to the overall dimension of the impact water inlet sliding track body, adopting finite element numerical analysis to calculate the load response of the impact water inlet sliding track body under the impact water inlet and water outlet conditions of an aircraft test model, determining the total capacity of the required inflatable air bags, further determining a plurality of parallel partition setting positions in the cavity of the impact water inlet sliding track body, installing two symmetrical and parallel arranged inflatable air bags in each compartment, and simultaneously determining the capacity of each inflatable air bag;
s53, determining the power of the inflator pump and the size of the inflation pipeline
The power of the inflator pump and the size of the matched inflation pipeline are determined according to the total capacity of the inflatable air bags, the capacity of each inflatable air bag and the test efficiency requirement.
The invention relates to a use method of an impact water-entering sliding rail of a water high-speed towing system, which comprises the following steps:
s61, mounting impact water-entering sliding track body
As shown in fig. 3, the front section of the impact water-entering sliding rail body is clamped on a rotary support of a water rail car of a water high-speed towing system, then the front end of the impact water-entering sliding rail body is connected with a hydraulic rod interface of the water rail car, and the rear end of the impact water-entering sliding rail body sequentially passes through a rail tread and the water surface to enter a water pool;
s62, setting an included angle between the impact water-entering sliding track body and the water surface
The hydraulic rod pulls the impact water inlet sliding rail body to rotate around the rotary support, and the included angle between the impact water inlet sliding rail body and the water surface is changed until the included angle between the impact water inlet sliding rail body and the water surface meets the test requirement;
s63, inflating an inflatable airbag
Opening an inflator pump, respectively inflating the inflatable air bags through an inflation pipeline, checking the sealing effect of each inflatable air bag, and performing sealing treatment or replacement on the inflatable air bags with air leakage; the pressure sensors in the inflatable air bags feed back the pressure values to the test control system, and the inflatable air bags stop inflating after reaching preset pressure values;
s64, performing an impact water inlet and outlet sliding test
According to the requirements of the impact water inlet and water outlet sliding tests, the aircraft test model vehicle slides along the steel structure track to perform water outlet and water inlet movements, in the test process, pressure sensors in all inflatable air bags feed back pressure values to a test control system, and an inflator pump supplements air for the inflatable air bags respectively at any time through an inflatable pipeline, so that the air pressure of each inflatable air bag is constant in the test process;
s65, daily maintenance of impact water-entering sliding track body
After the impact water-entering sliding test is completed, the impact water-entering sliding rail body enters a daily maintenance state, the hydraulic rod pulls the impact water-entering sliding rail body to rotate around the rotary support, the impact water-entering sliding rail body is placed at a daily parking angle, all the inflatable air bags are exhausted outwards until the pressure in the inflatable air bags reaches the daily parking pressure, the impact water-entering sliding rail body is fixed, and finally the water high-speed dragging system is closed.
The impact water inlet sliding track body of the impact water inlet sliding track of the water high-speed dragging system bears the gravity load of the aircraft test model and the steel structure track, the inflatable air bag is inflated through the inflator pump to remove liquid in the cavity of the underwater impact water inlet sliding track body, the buoyancy of the impact water inlet sliding track body in the underwater space is utilized to reduce the gravity load of the aircraft test model and the steel structure track, and the rotating support load and the hydraulic rod driving load of the water high-speed dragging system are reduced. Simultaneously, the buoyancy that the inflatable airbag provided evenly transmits to the both sides of striking income water sliding track body, can also avoid causing torsional load to the track. Finally, the purposes of improving the structural strength and the safety of the water high-speed dragging system and improving the control precision of the included angle between the impact water-entering sliding track main body and the horizontal plane are achieved.
In short, the impact water inlet sliding rail of the water high-speed towing system combines the impact water inlet sliding rail and the inflatable air bags into a whole, so that the buoyancy of the underwater space of the impact water inlet sliding rail body can be effectively utilized to reduce the load of the steel structure rail on the hydraulic rod and the rotary support, and the position control precision of the impact water inlet sliding rail body and the safety of the water high-speed towing system are improved.
Drawings
FIG. 1 is a schematic view of the structure of an impact water-entry skid track of a water high speed towing system of the present invention;
FIG. 2 is a schematic cross-sectional view of an impact entry skid rail of the marine high-speed towing system of the present invention;
FIG. 3 is a schematic view of the installation of the impact entry water ski track on the high speed marine towing system of the present invention.
In the figure, 1. Impacting into water sliding track body; 2. an inflatable airbag; 3. an inflator pump; 4. an inflation pipeline; 5. and (5) fastening a bolt.
Description of the embodiments
The invention is described in detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, the impact water-entering sliding rail of the water high-speed towing system comprises an impact water-entering sliding rail body 1, an inflatable airbag 2, an inflator pump 3 and an inflatable pipeline 4;
the impact water inlet sliding track body 1 is integrally of a door-shaped frame structure with a closed top surface and an open bottom surface and symmetrical two sides; a steel structure rail is arranged on the upper surface of the top surface along the length direction of the door-shaped frame, and the aircraft test model vehicle slides along the steel structure rail to perform water outlet and water inlet movements; the top surface and the side surfaces of the two sides are enclosed to form a rectangular cavity, a plurality of parallel partitions are arranged in the cavity to divide the rectangular cavity into a plurality of mutually communicated compartments, and two symmetrical inflatable air bags 2 are arranged in each compartment in parallel; the front section of the upper surface of the top surface is also provided with an inflator pump 3, an inflation pipeline 4 of the inflator pump 3 extends into the rectangular cavity, and extends backwards to the rear section of the door-shaped frame along the length direction of the door-shaped frame on the lower surface of the top surface, and the inflation pipeline 4 inflates the inflation air bags 2 in each compartment along the way; a pressure sensor is arranged in each inflatable airbag 2.
Furthermore, the impact water-entering sliding track body 1 is formed by welding stainless steel plates.
Further, the impact water-entering sliding track body 1 is connected with the inflatable air bag 2 by a fastening bolt 5.
Further, the inflatable air bag 2 and the inflatable pipeline 4 are made of organic rubber.
The invention relates to a design method of an impact water-entering sliding track of a water high-speed towing system, which comprises the following steps:
s51, determining the size of the impact water-entering sliding track body 1
According to the requirements of an aircraft test model on an impact water inlet and water outlet sliding test, determining the required overall dimension of the impact water inlet sliding track body 1;
s52, determining the layout number of the inflatable air bags 2
According to the overall dimension of the impact water inflow sliding track body 1, calculating the load response of the impact water inflow sliding track body 1 under the impact water inflow and water outflow conditions of an aircraft test model by adopting finite element numerical analysis, determining the total capacity of the required inflatable air bags 2, further determining a plurality of parallel partition setting positions in the cavity of the impact water inflow sliding track body 1, installing two symmetrical and parallel arranged inflatable air bags 2 in each compartment, and simultaneously determining the capacity of each inflatable air bag 2;
s53, determining the power of the inflator 3 and the size of the inflation pipeline 4
The power of the inflator 3 and the size of the associated inflation conduit 4 are determined based on the total capacity of the inflatable bladders 2 and the capacity of each inflatable bladder 2, as well as the efficiency requirements of the test.
The invention relates to a use method of an impact water-entering sliding rail of a water high-speed towing system, which comprises the following steps:
s61, mounting an impact water-entering sliding track body 1
The front section of the impact water-entering sliding track body 1 is clamped on a rotary support of a water rail car of a water high-speed towing system, the front end of the impact water-entering sliding track body 1 is connected with a hydraulic rod interface of the water rail car, and the rear end of the impact water-entering sliding track body 1 sequentially penetrates through a track tread and a water surface to enter a pool;
s62, setting an included angle between the impact water-entering sliding track body 1 and the water surface
The hydraulic rod pulls the impact water inlet sliding rail body 1 to rotate around the rotary support, and the included angle between the impact water inlet sliding rail body 1 and the water surface is changed until the included angle between the impact water inlet sliding rail body 1 and the water surface meets the test requirement;
s63, inflating the inflatable airbag 2
Opening an inflator pump 3, respectively inflating the inflatable bags 2 through an inflation pipeline 4, checking the sealing effect of each inflatable bag 2, and performing sealing treatment or replacement on the inflatable bags 2 with air leakage; the pressure sensors in the inflatable air bags 2 feed back the pressure values to the test control system, and the inflatable air bags 2 stop inflating after reaching preset pressure values;
s64, performing an impact water inlet and outlet sliding test
According to the requirements of the impact water inlet and water outlet sliding tests, the aircraft test model vehicle slides along the steel structure track to perform water outlet and water inlet movement, in the test process, the pressure sensors in the inflatable air bags 2 feed back pressure values to the test control system, the inflatable pump 3 supplements air for the inflatable air bags 2 at any time through the inflatable pipeline 4, and the air pressure of each inflatable air bag 2 is ensured to be constant in the test process.
S65, daily maintenance of impact water-entering sliding track body 1
After the impact water-entering sliding test is completed, the impact water-entering sliding track body 1 enters a daily maintenance state, the hydraulic rod pulls the impact water-entering sliding track body 1 to rotate around the rotary support, the impact water-entering sliding track body 1 is placed at a daily parking angle, each inflatable airbag 2 is exhausted outwards until the pressure in each inflatable airbag 2 reaches the daily parking pressure, the impact water-entering sliding track body 1 is fixed, and finally the water high-speed dragging system is closed.
Example 1
The length of the impact water-entering sliding rail body 1 of the embodiment is 15m, the cross-sectional dimension is 700 multiplied by 720mm to 1000 multiplied by 720mm, and the density of the stainless steel plate is 7.8g/cm 3 A plate thickness of 20mm and a weight of 10920kg; the included angle between the impact water inlet sliding rail and the horizontal plane is 30 degrees, and the hydraulic support is perpendicular to the impact water inlet sliding rail.
The inflatable airbag 2 has the following effects:
the underwater volume of the impact water-entering sliding track body 1 is 3391000cm 3 The built-in inflatable balloon 2 generates 33910N buoyancy.
The moment of the gravity of the impact water-entering sliding track body 1 on the action point of the hydraulic rod is 4423255Nm, the moment of the buoyancy of the underwater inflatable air bag 2 on the action point of the hydraulic rod is 2071291Nm, and the driving force of the hydraulic rod is reduced by 46.8% by the inflatable air bag 2.
The vertical downward load born by the rotary support is 261720N when the inflatable air bag 2 is not provided, the vertical downward load born by the rotary support is 151550N when the inflatable air bag 2 is provided, and the vertical downward load born by the rotary support is reduced by 42% by the inflatable air bag 2.
Therefore, the impact water-entering sliding rail of the water high-speed dragging system can obviously reduce the load of the rotary support and the hydraulic driving force, and effectively improve the control precision of the impact water-entering sliding rail and the safety of the water high-speed dragging system.
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the present invention without inventive work by those skilled in the art from the above-described concepts.
Claims (6)
1. The impact water inlet sliding rail of the water high-speed dragging system is characterized by comprising an impact water inlet sliding rail body (1), an inflatable air bag (2), an inflatable pump (3) and an inflatable pipeline (4);
the impact water inlet sliding track body (1) is integrally of a door-shaped frame structure with a closed top surface, an open bottom surface and two symmetrical sides; a steel structure rail is arranged on the upper surface of the top surface along the length direction of the door-shaped frame, and the aircraft test model vehicle slides along the steel structure rail to perform water outlet and water inlet movements; the top surface and the side surfaces of the two sides are enclosed to form a rectangular cavity, a plurality of parallel partitions are arranged in the cavity to divide the rectangular cavity into a plurality of mutually communicated compartments, and two symmetrical inflatable air bags (2) are arranged in each compartment in parallel; the front section of the upper surface of the top surface is also provided with an inflator pump (3), an inflation pipeline (4) of the inflator pump (3) extends into the rectangular cavity, and extends backwards to the rear section of the door-shaped frame along the length direction of the door-shaped frame on the lower surface of the top surface, and the inflation pipeline (4) inflates the inflation air bags (2) in each compartment along the way; a pressure sensor is arranged in each inflatable air bag (2).
2. The impact water-entering sliding rail of the water high-speed towing system according to claim 1, wherein the impact water-entering sliding rail body (1) is formed by welding stainless steel plates.
3. The impact water-entering sliding rail of the water high-speed towing system according to claim 1, wherein the impact water-entering sliding rail body (1) is connected with the inflatable air bag (2) by adopting a fastening bolt (5).
4. The impact water-entering sliding rail of the water high-speed towing system according to claim 1, wherein the material of the inflatable air bag (2) and the inflatable pipeline (4) is organic rubber.
5. The method for designing an impact water-entering sliding track of a water high-speed towing system according to any one of claims 1 to 4, comprising the steps of:
s51, determining the size of the impact water-entering sliding track body (1)
According to the requirements of an aircraft test model on an impact water inlet and water outlet sliding test, determining the required overall dimension of the impact water inlet sliding track body (1);
s52, determining the layout number of the inflatable air bags (2)
According to the overall dimension of the impact water inflow sliding track body (1), calculating the load response of the impact water inflow sliding track body (1) under the impact water inflow and water outflow conditions of an aircraft test model by adopting finite element numerical analysis, determining the total capacity of the required inflatable air bags (2), further determining a plurality of parallel partition setting positions in the cavity of the impact water inflow sliding track body (1), installing two symmetrical and parallel arranged inflatable air bags (2) in each compartment, and simultaneously determining the capacity of each inflatable air bag (2);
s53, determining the power of the inflator pump (3) and the size of the inflation pipeline (4)
The power of the inflator pump (3) and the size of the matched inflation pipeline (4) are determined according to the total capacity of the inflation air bags (2) and the capacity of each inflation air bag (2) and the test efficiency requirement.
6. The method for using the impact water-entering sliding rail of the water high-speed dragging system according to any one of claims 1 to 4, comprising the following steps:
s61 mounting impact water slide rail body (1)
The front section of the impact water-entering sliding track body (1) is clamped on a rotary support of a water rail car of a water high-speed towing system, then the front end of the impact water-entering sliding track body (1) is connected with a hydraulic rod interface of the water rail car, and the rear end of the impact water-entering sliding track body (1) sequentially penetrates through a track tread and the water surface to enter a water tank;
s62, setting an included angle between the impact water-entering sliding track body (1) and the water surface
The hydraulic rod pulls the impact water inlet sliding track body (1) to rotate around the rotary support, and the included angle between the impact water inlet sliding track body (1) and the water surface is changed until the included angle between the impact water inlet sliding track body (1) and the water surface meets the test requirement;
s63, inflating the inflatable air bag (2)
Opening an inflator pump (3), respectively inflating the inflatable air bags (2) through an inflation pipeline (4), checking the sealing effect of each inflatable air bag (2), and performing sealing treatment or replacement on the inflatable air bags (2) with air leakage; the pressure sensors in the inflatable air bags (2) feed back the pressure values to the test control system, and the inflatable air bags (2) stop inflating after reaching preset pressure values;
s64, performing an impact water inlet and outlet sliding test
According to the requirements of impact water inlet and water outlet sliding tests, an aircraft test model vehicle slides along a steel structure track to perform water outlet and water inlet movements, in the test process, pressure sensors in all inflatable air bags (2) feed back pressure values to a test control system, and an inflator pump (3) supplements air for the inflatable air bags (2) at any time through an inflatable pipeline (4) to ensure that the air pressure of each inflatable air bag (2) is constant in the test process;
s65, daily maintenance of the impact water-entering sliding track body (1)
After the impact water-entering sliding test is completed, the impact water-entering sliding track body (1) enters a daily maintenance state, the hydraulic rod pulls the impact water-entering sliding track body (1) to rotate around the rotary support, the impact water-entering sliding track body (1) is placed at a daily parking angle, each inflatable air bag (2) is exhausted outwards until the pressure in each inflatable air bag (2) reaches the daily parking pressure, the impact water-entering sliding track body (1) is fixed, and finally the water high-speed dragging system is closed.
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| CN116858702A (en) * | 2023-09-04 | 2023-10-10 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Pendulum impact test device and test method for passive thermal imaging detection |
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