Pipeline storage device for towing cone system
By designing a pipe storage device for the tow cone system, the problem of difficulty in safely storing the simple tow cone system pipes in the test aircraft was solved, the pipes were stably fixed and safely stored, and flight safety was improved.
Patent Information
- Application Number
- CN202420266903.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-02-02
AI Technical Summary
During the test flight, it is difficult for the test aircraft to store the pipelines of the simple tow cone system safely and reliably, resulting in unstable pipeline fixation and unstable, easy to damage, and may affect the airport operation and flight safety.
Design a pipeline storage device for the drag cone system, which includes a fixing mechanism and a storage mechanism. The fixing mechanism adopts a suction cup device and can be detachably installed. The storage mechanism consists of a storage shaft and a disc. The pipeline can be wound around the storage shaft. The plate prevents the pipe from moving out.
The safety and reliable storage and fixation of the simple drag -cone system pipelines are achieved, and the pipelines are reduced and damaged, and the airport operation and flight safety are improved.
Smart Images
Figure CN222388369U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of civil aircraft test and flight test, and specifically relates to a pipeline storage device for a drag cone system. Background Art
[0002] When an aircraft is flying, the speed of the aircraft relative to the air, i.e., the airspeed, is a very important piece of information. If the accurate airspeed cannot be obtained in time, the crew of the aircraft may not be able to respond to abnormal airspeed conditions, such as aircraft stall, in time, which may cause serious harm. Therefore, it is necessary to obtain accurate airspeed information of the aircraft at all times.
[0003] Generally speaking, airspeed is calculated from total pressure and static pressure and corrected for instrument errors. Therefore, if you want to obtain accurate airspeed, it is very important to measure and calibrate the static pressure value.
[0004] The drag cone method is usually applicable to the static pressure calibration of large aircraft and is a widely used static pressure calibration method. The drag cone system used in the drag cone method consists of a pipeline including a hose and a static pressure pipe and a drag cone. One part of the pipeline is located inside the fuselage of the aircraft, while the other part extends outside the fuselage. The end of the pipeline located outside the fuselage is connected to the drag cone.
[0005] During the flight test certification of new aircraft or the flight test certification of single-unit RVSM subjects of mass-produced aircraft, a simple drag cone system is usually installed on the test aircraft to collect the stable static pressure parameters required to demonstrate the aircraft performance under specific flight conditions. According to the test requirements, when the test aircraft collects static pressure parameters, the pipeline of the simple drag cone system has a length of tens of meters in the fully deployed state. However, there is no winch mechanism on the test aircraft to retract the pipeline of the simple drag cone system. Therefore, during the ground stage, the simple drag cone system needs to be safely and reliably stored and fixed outside the aircraft.
[0006] At present, since there is no special simple drag cone system fixing device on the outer surface of the test aircraft, metal aluminum foil tape is usually used to coil the simple drag cone system pipeline into a ring and then glue it to the belly skin.
[0007] Since the metal aluminum foil tape is easily affected by the water vapor and dust on the outer surface of the aircraft when it is bonded to the aircraft skin, the bonding effect is not stable, and the failure of the bonding can easily cause the simple drag cone system pipeline, static pressure pipe and cone to fall and be damaged. In addition, for the test aircraft equipped with the simple drag cone system, the aluminum foil tape fixing the simple drag cone system needs to be torn off at the take-off position of the runway before the flight, and the simple drag cone system needs to be removed and unfolded. After the flight, the simple drag cone system needs to be recovered on the runway and fixed to the aircraft's belly skin. Since the airport runway is a strictly controlled area for excess materials, for the traditional fixing method, if the aluminum foil tape is accidentally dropped on the airport runway, it is easy to be blown away by the wind, resulting in excess materials on the runway, which has a serious impact on airport operations and flight safety.
[0008] Therefore, it is currently desired to design an onboard ground device for a test aircraft that can receive a portion of the piping of the drag cone system. Utility Model Content
[0009] In order to solve the problem that it is difficult for existing test aircraft to store the pipes of the drag cone system, the utility model designs a pipe storage device for the drag cone system, which can be used to store a part of the pipes outside the fuselage of the simple drag cone system for the test aircraft, and is safe and reliable, easy to disassemble and assemble, and can be reused.
[0010] Specifically, the pipe storage device for the drag cone system is installed on the outer surface of the fuselage of the aircraft, and includes: a fixing mechanism, which is detachably mounted to the outer surface of the fuselage; and a storage mechanism, which is fixedly connected to the fixing mechanism and is configured to store at least a portion of the pipe of the drag cone system.
[0011] In one embodiment of the present invention, the fixing mechanism is a suction cup device.
[0012] Furthermore, the suction cup device includes a main body part, a suction cup part arranged under the main body part, and an air pump assembly installed on the main body part.
[0013] The air pump assembly comprises an air pump body and a suction button and a deflation button installed at both ends of the air pump body. Air can be manually pumped or deflated to realize the assembly and disassembly of the fixing mechanism.
[0014] The suction cup device further comprises a pressure gauge mounted on the main body portion for indicating the pressure in the space between the suction cup portion and the outer surface of the fuselage.
[0015] Specifically, the storage mechanism is formed by a storage shaft and discs located on both sides of the storage shaft, wherein the diameter of the storage shaft is smaller than the diameter of the discs. The pipeline can be wound around the storage shaft, and the large diameter of the discs can prevent the pipeline from moving out of the storage shaft.
[0016] In this embodiment, the storage mechanism is fixedly connected to the fixing mechanism via a detachable connecting mechanism to improve installation flexibility.
[0017] Furthermore, the connection mechanism includes a plurality of studs fixed on the fixing mechanism and a plurality of structural connectors matched with the studs, and the structural connectors are installed to the storage mechanism.
[0018] In this embodiment, the pipeline storage device for the drag cone system is installed on the skin of the belly of the fuselage of the aircraft. This position is convenient for manual installation of the pipeline storage device and is not too far away from the pipeline.
[0019] Preferably, a warning ribbon is also included, which is connected to the pipeline storage device for the drag cone system. The warning ribbon reminds the on-site staff to remove the pipeline storage device before the flight through a brightly colored ribbon.
[0020] Additional features and advantages of the described pipe receiving device for a drag cone system will be set forth in the detailed description that follows and will be apparent to those skilled in the art from the following or will be recognized by those skilled in the art from practicing the embodiments described herein, which description includes the following detailed description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] With reference to the above purposes, the technical features of the present invention are clearly described in the following claims, and its advantages are obvious from the following detailed description with reference to the accompanying drawings, which show the preferred embodiments of the present invention by way of example without limiting the scope of the concept of the present invention.
[0022] Figure 1 An assembly stereogram showing a pipeline storage device for a drag cone system according to an embodiment of the utility model; and
[0023] Figure 2 A partial exploded view of a pipeline receiving device for a drag cone system according to an embodiment of the utility model is shown.
[0024] Reference numerals
[0025] 1. Fixing mechanism
[0026] 11 Main part
[0027] 12 Suction cup part
[0028] 13 Air pump body
[0029] 14 Suction button
[0030] 15 Deflation button
[0031] 16 Pressure gauge
[0032] 2 Storage mechanism
[0033] 21 Storage shaft
[0034] 22 discs
[0035] 3 studs
[0036] 4Connection mechanism components
[0037] 5 Warning Ribbons DETAILED DESCRIPTION
[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.
[0039] For ease of interpretation and precise definition in the appended claims, the directional terms "upper" and "lower" are used to describe features of the exemplary embodiments with reference to their positions as shown in the figures.
[0040] Figure 1 shows an assembly stereogram of a pipeline storage device for a drag cone system according to an embodiment of the utility model, and Figure 2 A partial exploded view of a pipeline receiving device for a drag cone system according to an embodiment of the utility model is shown.
[0041] Advantageously, the pipe storage device for the drag cone system according to an embodiment of the utility model is installed on the outer surface of the fuselage of the aircraft. More advantageously, in this embodiment, the pipe storage device for the drag cone system is installed on the skin of the belly of the fuselage of the aircraft, which is convenient for manual installation of the pipe storage device and is not too far from the pipe. When installed on the skin of the belly, the pipe storage device of the utility model is easy to install. Figure 1 The state shown in FIG. 1 is rotated about 90 degrees (equivalent to standing “upright”).
[0042] like Figure 1 As shown, a pipe storage device for a drag cone system according to an embodiment of the utility model includes a fixing mechanism 1 and a storage mechanism 2, the fixing mechanism 1 is detachably mounted to the outer surface of the fuselage (in this embodiment, the outer surface skin of the belly), and the storage mechanism 2 is fixedly connected to the fixing mechanism 1 and is configured to store at least a portion of the pipes of the drag cone system.
[0043] The following will be combined Figure 2 The fixing mechanism 1 and the storage mechanism 2 of the pipeline storage device of the present invention are described in detail.
[0044] Reference Figure 2In this embodiment, the fixing mechanism 1 is a suction cup device, which includes a main body portion 11, a suction cup portion 12 arranged under the main body portion 11, and an air pump assembly installed on the main body portion 11. The main body portion 11 is preferably a rigid solid body for mounting other components thereon (such as the air pump body 13 and the stud 3 described below). The suction cup portion 12 is made of an elastic material, such as rubber. When the fixing mechanism 1 is mounted to the outer surface of the fuselage, the suction cup portion 12 acts as a suction cup so that the fixing mechanism 1 is adsorbed on the outer surface of the fuselage. At this time, a space is formed between the fixing mechanism 1 (specifically the suction cup portion 12) and the outer surface of the fuselage.
[0045] Further, the air pump assembly is manually operated and includes an air pump body 13 and a suction button 14 and a deflation button 15 installed at both ends of the air pump body. The air pump body 13 is installed on the main body 11, so that when the fixing mechanism 1 is installed to the outer surface of the fuselage, the air pump body 13 is connected to the space formed between the fixing mechanism 1 and the outer surface of the fuselage to evacuate or deflate the space. Specifically, when it is necessary to fix the pipeline storage device to the outer surface of the fuselage, the fixing mechanism 1 can be pressed on the outer surface of the fuselage, and then the suction button 14 is pressed, and the air pump body 13 can extract the air in the space between the fixing mechanism 1 and the outer surface of the fuselage to increase the pressure difference between the space and the outside world, so that the fixing mechanism 1 is firmly adsorbed on the outer surface of the fuselage; and when it is necessary to remove the pipeline storage device from the outer surface of the fuselage, the deflation button 15 can be pressed to pump air into the above-mentioned space, so that the pressure difference between the space and the outside world is reduced to a level sufficient to remove the fixing mechanism 1.
[0046] The suction cup device further includes a pressure gauge 16 mounted on the main body. The pressure gauge 16 is used to indicate the pressure in the space between the suction cup portion 12 and the outer surface of the fuselage. When the pressure indicated by the pressure gauge 16 reaches a predetermined pressure value, it can be considered that the pressure in the space is sufficient to enable the fixing mechanism 1 to be firmly attached to the outer surface of the fuselage.
[0047] Reference Figure 2 The storage mechanism 2 is formed by a storage shaft 21 and discs 22 located on both sides of the storage shaft 21, wherein the diameter of the storage shaft 21 is smaller than the diameter of the discs 22. This structure makes the storage mechanism 2 in the shape of a capstan, and the pipeline of the drag cone system can be wound on the storage shaft 21, and the discs 22 prevent the pipeline from moving out of the storage shaft 21. The length of the storage shaft 21 between the discs 22 (from top to bottom in the figure) is at least greater than the diameter of the pipeline to be stored. When the pipeline is wound on the storage shaft 21, the drag cone at the end of the pipeline can naturally droop by its gravity to "tighten" the pipeline wound on the storage shaft 21, so that the pipeline can be more stably stored in the storage mechanism 2.
[0048] Advantageously, the storage mechanism 2 is fixedly connected to the fixing mechanism 1 via a detachable connecting mechanism. The connecting mechanism is designed to be able to be installed to and removed from at least one of the fixing mechanism 1 and the storage mechanism 2, which improves the flexibility of installation. For example, when the storage mechanism 2 is damaged, the storage mechanism 2 can be removed from the connecting mechanism to replace a new storage mechanism without having to replace the fixing mechanism 1 and the storage mechanism 2 together.
[0049] Specifically, the connection mechanism includes a plurality of studs 3 fixed on the fixing mechanism 1 and a plurality of structural connectors 4 matched with the studs, and the structural connectors 4 are mounted to the storage mechanism 2. In one example of the present embodiment, the fixing mechanism 1 is provided with a threaded hole, and the plurality of studs 3 may be double-headed studs, so that one end thereof may be threadedly connected to the threaded hole of the fixing mechanism 1. The other end of the stud 3 may be threadedly connected to the threaded hole of the structural connector 4, and then the structural connector 4 may be, for example, inserted into a matching hole (not shown) on the disc 22 of the storage mechanism 2, thereby completing the connection between the fixing mechanism 1 and the storage mechanism 2. It should be understood that the stud 3 may have other types. In addition, although the structural connector 4 is shown in the figure as having a generally cylindrical shape, this is also exemplary, and the structural connector may be in the shape of a generally quadrangular prism or a hexagonal prism in other embodiments, and the storage mechanism may have a shape matching the shape of the structural connector to facilitate the insertion of the structural connector.
[0050] It is worth noting that this embodiment uses four studs 3 and four structural connectors 4 to prevent the storage mechanism 2 from rotating relative to the fixing mechanism 1 and increase the connection stability. However, in other embodiments, more or fewer studs 3 and structural connectors 4 may be used, or even only one stud and one structural connector may be used, wherein the shape of the structural connector and the matching shape of the storage mechanism 2 prevent the storage mechanism 2 from rotating relative to the fixing mechanism 1. In any case, as long as the storage mechanism 2 does not produce obvious displacement relative to the fixing mechanism 1, it will be fine.
[0051] In addition, the pipe storage device for the cone dragging system of the utility model further comprises a warning ribbon 5, which is connected to the pipe storage device for the cone dragging system, and is specifically fixed to the storage mechanism 2. The warning ribbon 5 can remind the on-site staff to remove the device before the flight by means of a brightly colored ribbon (because the pipe storage device on the outer surface of the aircraft may have an impact on the flight test of the aircraft).
[0052] The specific implementation of the pipeline storage device for the drag cone system of the utility model is as follows:
[0053] (1) Assembling the storage mechanism 2 and the warning ribbon 5 to complete the assembly of the upper storage mechanism 2 of the pipeline storage device for the drag cone system;
[0054] (2) Assemble the main body 11, the suction cup 12, the air pump body 13, the suction button 14, the deflation button 15, the pressure gauge 16 and the stud 3 to complete the assembly of the fixing mechanism 1 at the bottom of the pipeline receiving device for the drag cone system;
[0055] (3) By assembling the connecting mechanism component 4 and the stud 3, the assembly of the simple drag cone system on-board ground fixing device is finally completed and delivered for on-site use;
[0056] (4) When the pipeline storage device is needed, the suction cup part 12 of the fixing mechanism 1 of the device is attached to the belly skin, and the suction button 14 is pressed to evacuate the space between the suction cup part 12 and the skin until the pressure gauge 16 indicates that the pressure is sufficient. At this time, the simple drag cone pipeline outside the fuselage can be recovered and fixed in the storage mechanism 2 of the device. Before removing the simple drag cone system, the simple drag cone pipeline is taken out from the storage mechanism 2 of the device, and then the device is removed from the belly skin by pressing the deflation button 15 of the device.
[0057] Although the structure and operation method of the utility model are described above in conjunction with the preferred embodiments, those skilled in the art should recognize that the above examples are only illustrative and cannot be used as limitations on the utility model. Therefore, the utility model can be modified and varied, and these modifications and variations will fall within the scope defined by the claims attached to this application.
Claims
1. A pipeline storage device for a drag cone system, characterized in that: The pipeline storage device for the drag cone system is installed on the outer surface of the fuselage of the aircraft and includes: a fixing mechanism detachably mounted to an outer surface of the fuselage; and A receiving mechanism is fixedly connected to the fixing mechanism and is configured to receive at least a portion of a pipeline of the drag cone system.
2. The pipeline storage device for the drag cone system according to claim 1, characterized in that: The fixing mechanism is a suction cup device.
3. The pipeline storage device for the drag cone system according to claim 2, characterized in that: The suction cup device comprises a main body part, a suction cup part arranged under the main body part and an air pump assembly installed on the main body part.
4. The pipeline storage device for the drag cone system according to claim 3, characterized in that: The air pump assembly comprises an air pump body and a suction button and a deflation button installed at both ends of the air pump body.
5. The pipeline storage device for the drag cone system according to claim 3, characterized in that: The suction cup device further comprises a pressure gauge mounted on the main body.
6. The pipeline storage device for the drag cone system according to claim 1, characterized in that: The storage mechanism is formed by a storage shaft and disks located on both sides of the storage shaft, wherein the diameter of the storage shaft is smaller than the diameter of the disks.
7. The pipeline storage device for the drag cone system according to claim 1, characterized in that: The storage mechanism is fixedly connected to the fixing mechanism via a detachable connecting mechanism.
8. The pipeline storage device for the drag cone system according to claim 7, characterized in that: The connection mechanism comprises a plurality of studs fixed on the fixing mechanism and a plurality of structural connecting members matched with the studs, and the plurality of structural connecting members are installed to the storage mechanism.
9. The pipeline storage device for a drag cone system according to claim 1, characterized in that: The pipeline storage device for the drag cone system is installed on the skin of the belly of the fuselage of the aircraft.
10. The pipeline storage device for a drag cone system according to claim 1, characterized in that: It also includes a warning ribbon, which is connected to the pipeline storage device for the cone dragging system.