Mounting structure for thrust paddle test equipment

Abstract

The utility model provides a mounting structure for thrust paddle test equipment, which belongs to the technical field of flight test and test, and comprises a box body, a cover plate, a coil mounting piece, a crimping assembly and a connector, the cover plate is located above the box body, the coil installation part and the box body are installed in a tight fit mode, the crimping assembly is installed on the cover plate in an embedded mode, the connector is located on the side edge of the box body, and the box body, the cover plate and the coil installation part are symmetrically distributed with the axis of the thrust paddle as the reference center; and the test requirement of the coaxial helicopter on the thrust paddle during the flight test can be met.

Description

Technical Field

[0001] This utility model belongs to the field of flight test and flight test technology, and in particular relates to an installation structure for thrust propeller testing equipment. Background Technology

[0002] A coaxial helicopter rotor system consists of a main rotor and a tail rotor. The main rotor structure comprises two rotors mounted on the same axis and rotating in opposite directions. Due to its unique main rotor configuration, the main rotor can counteract the anti-torque generated by its own rotation, eliminating the need for a separate tail rotor. Furthermore, this rotor configuration possesses aerodynamic symmetry, which can prevent the fuselage from tipping over due to lift imbalance caused by retreating blade stall at high speeds, thus maintaining a more stable flight attitude. The tail rotor provides the helicopter with additional thrust, enabling it to achieve higher flight speeds.

[0003] During high-speed flight, the tail thruster continuously withstands significant aerodynamic loads. During test flights, load tests need to be conducted on critical high-speed rotating components such as the tail thruster blades and drive shaft. Therefore, a test system needs to be installed on the tail thruster structure to collect, encode, and transmit the thruster load signals. The tail thruster load measurement system consists of a data acquisition module, an encoding and transmission module, and a power supply module. Conventional power supply modules use a slip ring, inductive power, or battery power. Due to the unique configuration of the tail thruster, a slip ring cannot be installed. Furthermore, the tail thruster rotates at speeds exceeding 2000 r / min, requiring a high level of added mass; therefore, inductive power is used to power the test system.

[0004] Modifications to the main structure are not permitted for testing moving components during helicopter flight tests. Furthermore, during helicopter flight, the test system, attached to the helicopter's tail thrust rotor system, rotates synchronously at high speed with the system. This places high demands not only on the reliability and safety of the equipment installation but also on the installation method, quality, dimensions, and dynamic balance of the mounting device. Therefore, designing a rational and effective mounting device for the coaxial helicopter tail thrust rotor measurement system is crucial for load testing of the tail thrust rotor system during flight tests of coaxial helicopters. Utility Model Content

[0005] To address the problem that existing technologies cannot meet the load testing requirements of the tail thrust rotor system during flight tests of coaxial helicopters, this invention provides an installation structure for thrust rotor testing equipment, satisfying the testing requirements of the thrust rotor during flight tests of coaxial helicopters. The technical solution is as follows:

[0006] In a first aspect, an installation structure for a thrust propeller testing device is provided, comprising: a housing 1, a cover plate 2, a coil mounting component 3, a crimping assembly 4, and a connector 5; the cover plate 2 is located above the housing 1, the coil mounting component 3 is tightly fitted to the housing 1, the crimping assembly 4 is embedded in the cover plate 2, and the connector 5 is located on the side of the housing 1 for easy insertion and removal and is able to withstand high centrifugal force; the distribution of the housing 1, the cover plate 2, and the coil mounting component 3 is symmetrical about the thrust propeller shaft center.

[0007] Optionally, the housing 1 has a cavity for placing the acquisition module and power module of the test equipment.

[0008] Optionally, the edge of the housing 1 is provided with a fork lug with a through hole for securing the test cable.

[0009] Optionally, the cover plate 2 is structurally matched with the box body 1, and is used to seal the box body 1 after the acquisition module and power module are installed.

[0010] Optionally, the cover plate 2 has a groove near the coil mounting member 3 for embedded mounting of the crimping assembly 4.

[0011] Optionally, the plane of the coil mount 3 is parallel to the YOZ plane of the aircraft and is mounted on the side closer to the nose.

[0012] The beneficial effects of this utility model are at least as follows:

[0013] With a compact structure, it can meet the testing requirements of coaxial helicopter thrust propellers and is suitable for thrust propellers with compact structures.

[0014] High reliability; the inductive transmission and power supply scheme can support the long-term stable operation of the test system.

[0015] Lightweight; the inductive power supply solution is lighter, reducing the overall weight.

[0016] It offers high safety, and its lower weight enhances operational safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the specific structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the box structure of this utility model;

[0020] Figure 4 This is a structural diagram of the coil mounting component of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0023] It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other, and the various embodiments can be referenced and cited from each other.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0026] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model embodiment provides an installation structure for a thrust propeller testing device. The installation structure for the thrust propeller testing device includes: a housing 1, a cover plate 2, a coil mounting component 3, a crimping assembly 4, and a connector 5.

[0027] The distribution of the box body 1, cover plate 2, and coil mounting component 3 is symmetrical about the thrust propeller shaft center.

[0028] The housing 1 contains a cavity, which is symmetrically fan-shaped with an inner radius of 153mm and an outer radius of 211mm, and a central angle of 105°. This cavity houses the data acquisition module and the power module. The outer dimensions of the modules match the dimensions of the cavity in housing 1 to prevent collisions between the modules and housing 1 during propeller movement. (See...) Figure 3 .

[0029] The edge of the box 1 has a fork lug with a through hole. The inner diameter of the fork lug is 1.2 times the width of the cable tie used during the test modification. During use, the test cable is fixed to the box 1 by the cable tie.

[0030] The cover plate 2 matches the box body 1 and is used to close the box body 1 after the acquisition module and power module are installed. The cover plate 2 and the box body 1 are connected by bolts, and the bolt hole positions of the two are completely consistent. The projection outline of the cover plate 2 in the X direction of the helicopter must not exceed the box body 1.

[0031] The cover plate 2 has a groove near the coil mounting part 3 for the embedded installation of the crimping assembly 4. The crimping assembly 4 is connected to the cover plate 2 by bolts. After installation, the dimension of the crimping assembly 4 in the X direction of the helicopter must not exceed that of the coil mounting part 3.

[0032] The plane of coil mounting component 3 is parallel to the helicopter's YOZ plane and is installed on the side closer to the nose. Its diameter is the same as that of the stator coil on the stationary fuselage component. The two work together. Coil mounting component 3 is connected to housing 1 by bolts. See [link to details]. Figure 4 .

[0033] Connector 5 is located on the side of housing 1, which is convenient for plugging and unplugging and can withstand centrifugal force at high speeds.

[0034] See Figures 1 to 4 This utility model embodiment also provides an installation process for an installation structure for a thrust propeller testing device, as follows:

[0035] 1. First, install the acquisition module and power module inside the cavity of box 1;

[0036] 2. Then connect the pressing assembly 4 and the cover plate 2 together with bolts to form a whole;

[0037] 3. Connect the coil mounting part 3 and the box body 1 together with bolts to form a whole;

[0038] 4. Install connector 5 on the side of housing 1;

[0039] 5. Wind an appropriate amount of coil into the groove of coil mounting part 3 to meet the requirements of induction power supply;

[0040] 6. Connect the box body 1, the coil mounting component 3, and the cover plate 2 together with bolts;

[0041] 7. Press both ends of the coil onto the screws of the pressing assembly 4 to meet the power supply requirements of the module;

[0042] 8. Connect the cover plate 2 to the box body 1 with bolts to close the box body 1 and fix the acquisition module and power module;

[0043] 9. Install the equipment assembled in steps 1-8 above into the machine;

[0044] 10. After installation, secure the test cable to the fork lug of box 1 with cable ties.

[0045] The advantages of this utility model are as follows:

[0046] With a compact structure, it can meet the testing requirements of coaxial helicopter thrust propellers and is suitable for thrust propellers with compact structures.

[0047] High reliability; the inductive transmission and power supply scheme can support the long-term stable operation of the test system.

[0048] Lightweight; the inductive power supply solution is lighter, reducing the overall weight.

[0049] It offers high safety, and its lower weight enhances operational safety.

[0050] The above description merely illustrates the embodiments of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Furthermore, any parts of this utility model not described in detail are conventional techniques.

Claims

1. A mounting structure for a thrust propeller testing device, characterized in that, include: Box (1), cover plate (2), coil mounting component (3), crimping assembly (4), connector (5); cover plate (2) is located above box (1), coil mounting component (3) is tightly fitted to box (1), crimping assembly (4) is embedded in cover plate (2), connector (5) is located on the side of box (1), box (1), cover plate (2) and coil mounting component (3) are symmetrically distributed with the thrust propeller shaft as the reference center.

2. The mounting structure for a thrust propeller testing device according to claim 1, characterized in that, The box (1) has a cavity for placing the acquisition module and power module of the test equipment.

3. The mounting structure for a thrust propeller testing device according to claim 1 or 2, characterized in that, The edge of the box (1) is provided with fork lugs with through holes for fixing test cables.

4. The mounting structure for a thrust propeller testing device according to claim 1, characterized in that, The cover plate (2) is structurally matched with the box body (1).

5. The mounting structure for a thrust propeller testing device according to claim 1, characterized in that, The cover plate (2) has a groove near the coil mounting part (3) for the embedded mounting of the crimping assembly (4).

6. The mounting structure for a thrust propeller testing device according to claim 1, characterized in that, The plane of the coil mounting component (3) is parallel to the YOZ plane of the aircraft and is installed on the side closer to the nose.

Images