Vortex ring state boundary test bench

Abstract

The utility model relates to the technical field of aircrafts, and discloses a vortex ring state boundary test bench, which comprises a supporting seat, a fixed end and a movable end, the supporting seat comprises a base table, a push rod piece is arranged on the side surface of the base table, the output end of the push rod piece is connected with a mounting plate, the mounting plate is also connected with the base table, and the fixed end is connected with the movable end. The push rod piece is used for controlling the mounting plate to move so that the mounting plate can incline at different angles, a guide rail is arranged on the mounting plate, a fixed block and a sliding block are arranged on the guide rail, the fixed end is arranged on the fixed block, the movable end is arranged on the sliding block, and the movable end is arranged on the sliding block. The mounting plate is further provided with a single-shaft driver connected with the sliding block, and the single-shaft driver is used for controlling the sliding block to move on the guide rail. By arranging the movable end and the fixed end and adjusting the distance between the movable end and the fixed end, the problems that a detection test bed is single in function and cannot meet testing in multiple situations are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft, concretely is a vortex ring state boundary test bench. BACKGROUND

[0002] In recent years, with the rapid development of city and the rapid increase of the number of big cities, the existing manned vehicles can not meet the needs of people today. In daily life, short-distance transportation or passenger transport often adopts the form of ground transportation, such as buses, cars, trucks, etc., which are often limited by ground roads and often appear vehicle congestion; in the aspect of aircraft, manned aircraft is suitable for short-distance transportation, which will be used and developed a lot in the present and future.

[0003] During aircraft testing, it is necessary to detect that the aircraft will enter a vortex ring state under different axial flow velocities and motor speeds; at the same time, it is necessary to measure the lift and power under the vortex ring state, find measures to get out of the vortex ring state, and provide reference for control strategy. The existing test bench has single function and cannot meet the test under multiple situations.

[0004] Therefore, we propose a vortex ring state boundary test bench to solve the above problems. UTILITY MODEL CONTENT

[0005] (I) technical problem solved

[0006] In view of the defects of the prior art, the utility model provides a vortex ring state boundary test bench, which is provided with a moving end and a fixed end, and the distance between the moving end and the fixed end is adjusted, so that the problem of single function of the test bench and the problem of inability to meet the test under multiple situations are solved.

[0007] (II) technical scheme

[0008] In order to achieve the above-mentioned multifunctional test bench, the utility model provides the following technical scheme: a vortex ring state boundary test bench, comprising a support seat, a fixed end and a moving end, the support seat comprises a base table, the bottom of the base table is larger than the top to provide support force, the side surface of the base table is provided with a push rod piece, the output end of the push rod piece is connected with a mounting plate, the mounting plate is also connected with the top of the base table, the push rod piece is used for controlling the movement of the mounting plate, so that the mounting plate presents different angle inclination, the mounting plate rotates along the connection with the base table, the mounting plate is provided with guide rails, the guide rails are two, which are arranged along the length of the mounting plate, the guide rails are provided with fixed blocks and sliding blocks, the fixed end is arranged on the fixed block, the moving end is arranged on the sliding block, the mounting plate is also provided with a single shaft driver connected with the sliding block, and the single shaft driver is used for controlling the movement of the sliding block on the guide rail.

[0009] As a further illustration of the utility model: the mounting plate includes bottom plate and support and bushing, the support has two, two The support is arranged at the bottom of the bottom plate, the support is the top end of the support table, through the bushing and the support table is connected, ensure that the support and the bottom plate can rotate with the support table, The bushing, support and support table are inserted by bolts.

[0010] As a further illustration of the utility model: the push rod piece includes a push rod motor and a connecting seat, the connecting seat is hinged with the output end of the push rod motor, which can drive the bottom plate to rotate along the output end of the push rod motor, and the connecting seat is fixedly connected with the bottom plate.

[0011] As a further illustration of the utility model: the fixed end includes a first column, a first fairing and a first test piece, the first fairing is arranged outside the first column, and is used for wrapping the first column, thereby reducing the influence of the first column on the airflow, and the first test piece is arranged on the first column, and the first test piece is a rotor.

[0012] As a further illustration of the utility model: the fixed end includes a second column, a second fairing and a second test piece, the second fairing is arranged outside the second column, and is used for wrapping the second column, thereby reducing the influence of the first column on the airflow, and the second test piece is arranged on the second column, and the second test piece is a rotor.

[0013] As a further illustration of the utility model: the first column is further provided with a detection device, and the detection device includes a speed sensor and a temperature sensor.

[0014] As a further illustration of the utility model: it further includes a shaft coupling, which is used for connecting the first test piece and the second test piece, so that the first test piece and the second test piece are coaxial, and the first test piece and the second test piece are ensured to rotate together.

[0015] The above description is only for the coaxial state (i.e. the state that the fixed end and the moving end are both equipped with rotors), and the moving end can be conveniently and quickly assembled and disassembled by loosening the shaft coupling. After disassembly, single-rotor testing can be carried out. The purpose of disassembly is to avoid the influence of the structural parts of the second column on single-rotor testing.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides a vortex ring state boundary test bench, which has the following beneficial effects:

[0018] 1. By setting the sliding block and the single-shaft driver, the distance between the moving end and the fixed end can be adjusted, and the total distance can be periodically changed.

[0019] 2, set the mobile end, fixed end, by removing the mobile end, keep the fixed end, can be for single rotor test; while keeping the mobile end and fixed end, can also be for double rotor coaxial test; 3, by setting the detachable parts, easy to disassemble, assemble and debug. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the support seat structure schematic view of the utility model;

[0021] Figure 2 It is the single shaft state structure schematic view of the utility model;

[0022] Figure 3 It is the double shaft state structure schematic view of the utility model;

[0023] Figure 4 It is the shaft coupling structure schematic view of the utility model.

[0024] In the drawing: 1, support seat; 11, base table; 12, push rod; 13, bottom plate; 14, fixed block; 15, guide rail; 16, sliding block; 17, single shaft driver; 2, fixed end; 3, mobile end; 4, shaft coupling. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0026] Please refer to Fig. 4, a vortex ring state boundary test bench, including support seat 1, fixed end 2 and mobile end 3, the support seat 1 includes base table 11, the bottom of base table 11 is greater than the top to provide support force, the side of base table 11 is provided with push rod 12, the output end of push rod 12 is connected with mounting plate, the mounting plate is also connected with the top of base table 11, push rod 12 is used to control the movement of mounting plate, so that mounting plate presents different angle inclination, mounting plate rotates along the connection of base table 11, the mounting plate is provided with guide rail 15, guide rail 15 has two, respectively along the length of mounting plate is provided, the guide rail 15 is provided with fixed block 14 and sliding block 16, the fixed end 2 is arranged on fixed block 14, the mobile end 3 is arranged on sliding block 16, the mounting plate is also provided with single shaft driver 17 connected with sliding block 14, the single shaft driver 17 is used to control the movement of sliding block 14 on guide rail 15.

[0027] The mounting plate comprises a bottom plate 13 and a support and a shaft sleeve, the support has two, the two supports are respectively arranged at the bottom of the bottom plate 13, the middle of the support is the top end of the base table 11, and the shaft sleeve is connected with the base table 11, so that the support and the bottom plate 13 can rotate with the base table 11, and the shaft sleeve, the support and the base table 11 are limited by bolts; the push rod piece 12 comprises a push rod motor and a connecting seat, the connecting seat is hinged with the output end of the push rod motor, so that the connecting seat can drive the bottom plate 13 to rotate along the output end of the push rod motor, and the connecting seat is fixedly connected with the bottom plate 13.

[0028] The fixed end 2 comprises a first stand, a first fairing and a first test piece, the first fairing is arranged outside the first stand and is used for wrapping the first stand to reduce the influence of the first stand on airflow, and the first test piece is arranged on the first stand and is a rotor; the movable end 3 comprises a second stand, a second fairing and a second test piece, the second fairing is arranged outside the second stand and is used for wrapping the second stand to reduce the influence of the first stand on airflow, and the second test piece is arranged on the second stand and is a rotor; the first stand is further provided with a detection device, the detection device comprises a rotating speed sensor and a temperature sensor, and the detection device is used for detecting data of the first test piece and the second test piece during testing.

[0029] Further comprising a shaft coupling 4, which is used for connecting the first test piece and the second test piece to make the first test piece and the second test piece coaxial and ensure that the first test piece and the second test piece rotate together.

[0030] Working principle:

[0031] One: single-shaft test (single pair of rotor test)

[0032] When the single pair of rotor test is performed, the movable end 3 is removed, and the fixed end 2 is retained, different rotors and different motors can be tested by replacing the shaft clamp and the motor, wherein the rotation of the bottom plate 13 is controlled through the push rod piece 12, and then the angle is adjusted.

[0033] Two: coaxial test (multi-pair rotor test)

[0034] According to the adjustment of the single-shaft driver 17 arranged on the bottom plate 13, the single-shaft driver 17 uses a servo motor to drive the sliding block 14 to realize accurate control of the distance between the two rotors, and the positions of the two rotors are determined according to the test requirements. After the position of the movable end 3 is adjusted, the shaft coupling 4 is used to connect the two rotors to realize the joint action of the two rotors.

[0035] The aerodynamic force, counter torque and tilting torque of the rotor in each direction are measured by a six-component balance. The rotating speed, current, voltage and temperature parameters are measured by sensors, and the cyclic pitch angle and total pitch angle are obtained by rudder calibration calculation.

[0036] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A vortex state boundary test bench, comprising a support seat (1), a fixed end (2) and a moving end (3), characterized in that: The support base (1) comprises a base table (11), the side of the base table (11) is provided with a push rod (12), the output end of the push rod (12) is connected with a mounting plate, the mounting plate is also connected with the base table (11), the push rod (12) is used for controlling the mounting plate to move, so that the mounting plate presents different angle inclination, the mounting plate is provided with a guide rail (15), the guide rail (15) is provided with a fixed block (14) and a sliding block (16), the fixed end (2) is arranged on the fixed block (14), the moving end (3) is arranged on the sliding block (16), the mounting plate is also provided with a single shaft driver (17) connected with the sliding block (16), the single shaft driver (17) is used for controlling the sliding block (16) to move on the guide rail (15).

2. A vortex state boundary test bench according to claim 1, characterized in that: The mounting plate comprises a bottom plate (13) and a support and a shaft sleeve, the support is arranged at the bottom of the bottom plate (13), and the shaft sleeve is connected with the base table (11), the shaft sleeve, the support and the base table (11) are limited by bolts.

3. A vortex state boundary test bench according to claim 2, characterized in that: The push rod (12) comprises a push rod motor and a connecting seat, the connecting seat is hinged with the output end of the push rod motor, and the connecting seat is fixedly connected with the bottom plate (13).

4. A vortex state boundary test bench according to claim 1, characterized in that: The fixed end (2) comprises a first stand, a first fairing and a first test piece, the first fairing is arranged outside the first stand and is used for wrapping the first stand, and the first test piece is arranged on the first stand.

5. A vortex state boundary test bench according to claim 4, characterized in that: The moving end (3) comprises a second stand, a second fairing and a second test piece, the second fairing is arranged outside the second stand and is used for wrapping the second stand, and the second test piece is arranged on the second stand.

6. A vortex state boundary test bench according to claim 5, characterized in that: The first stand is also provided with a detection device, and the detection device comprises a rotating speed sensor and a temperature sensor.

7. A vortex state boundary test bench according to claim 5, characterized in that: The coupling (4) is used for connecting the first test piece and the second test piece, so that the first test piece and the second test piece are coaxial.

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