The invention discloses a supersonic-speed wind tunnel test section regulating device with the angle adjustment function and belongs to the field of wind tunnel test device design. The device includes a frame, an elastic beam, a hinge shaft, a fixed adjusting piece, a transition adjusting piece, a rotating adjusting piece, an ejector rod, an arc-shaped guide rail, a roll ball screw rod module, a servo motor, a reducer, a pull wire sensor and the like. A rail body of the arc guide rail is installed on the transition adjusting piece fixedly connected with the frame, a slider of the arc-shaped guide rail is connected with the rotating adjusting piece, the ejector rod is driven by means of a linear motion mechanism composed of the servo motor, the speed reducer and the roll ball screw rod module to walk, the rotation of the adjusting pieces is achieved, and oblique shock waves with the continuously variable shock wave angle is generated. The device has the function of accurately adjusting a wind tunnel flow field, can be applied in shock wave reflection and continuously variable Maher number research projects, can also be applied in pressure measuring, air inlet channel measuring and other supersonic-speed wind tunnel special tests, and effectively expands the capacity of the wind tunnel test.

Supersonic-speed wind tunnel test section regulating device with angle adjustment function

The invention provides a transonic supersonic speed wind tunnel large-attack-angle mechanism with the translational function. A large-attack-angle component is connected with a model supporting rod base through a rotation shaft in a hinge mode and provides a test attack angle for a model connected with the front end of a model supporting rod; a translational component includes an upper end frame, roll ball polished rods, a roll ball screw rod, a movable end frame, a servo motor, a gear pair, a lower end frame and a position sensor; the two ends of a polished rod shaft of each roll ball polished rod are fixedly connected with the upper end frame and the low end frame respectively, linear bearings of the roll ball polished rods are installed on the movable end frame, the two ends of a screw rod shaft of the roll ball screw rod are installed on the upper end frame and the low end frame, the connection ends of the roll ball screw rod can rotate relatively, a nut of the roll ball screw rod is installed on the movable end frame, the servo motor drives the gear pair to drive the screw rod shaft to rotate so as to drive the nut horizontally move to drive the movable end frame to move up and down, and the movable end frame drives the large-attack-angle component to move up and down; the position sensor is used for sensing up-and-down movement of the movable end frame, by the combination of the movement information with a set horizontal moving distance, closed-loop control is conducted on the servo motor, and the distance between the upper end frame and the lower end frame is larger than the distance between a wind tunnel axis and a top plate of an upper plenum chamber.

Transonic supersonic speed wind tunnel large-attack-angle mechanism with translational function

The invention discloses a pore plate capable of adjusting aperture online, comprising an adjusting bolt, a flange plate, blades,a rotary shaft and a locking bolt; four fan-shaped air holes are set in the middle of the flange plate; the blade has four fan-shaped blades matching with the air holes; the four fan-shaped blades are coaxially set on the flange plate in a rotary manner; the rotary position of the blade can be regulated by the adjusting bolt to achieve the purpose of blocking the air holes; the exposed length of the adjusting bolt has unique corresponding relation with the rotary position of the blades so as to realize the function of adjusting the apertureThe aperture adjusting is direct and controllable in the invention without dismounting the pipeline and gas pressure reliving The pore plate has the features of simple structure and convenient installation; the applicable range is air medium, the pressure level is PN25-PN25, the nominal diameter is DN50-DN600, and the maximum aperture increment is 40%

Pore plate capable of adjusting aperture online

The invention provides a multi-degree-of-freedom sub-supersonic wind tunnel large-attack-angle mechanism. A whole frame serves as an installation foundation of the whole mechanism. A front area assembly and a rear arm assembly are identical in structure and are both provided with a servo motor, a gear pair, a ball screw, a rolling guide rail and a corresponding arm. Sliders of the rolling guide rails are fixed to the frame, the front arm and the rear arm are fixedly connected with the rolling guide rails in the corresponding assemblies respectively, a linear moving mechanism formed by the servo motors, the gear pairs, the ball screws and the rolling guide rails drives the front arm and the rear arm to move up and down, the lower end of the front arm is connected with a model supporting rod base through a hinge shaft, the lower end of the rear arm is hinged to one end of a small arm, and the other end of the small arm is hinged to the model supporting rod base. During testing, the two servo motors are controlled to rotate to drive the front arm and the rear arm to move up and down according to a to-be-tested attack angle; when the up-down moving speeds of the front and rear arms are consistent, translation of a model supporting rod is achieved; two position sensors are used for sensing the displacement of the front arm and the displacement of the rear arm respectively, the sensed displacements are output to the outside, and the outside achieves closed-loop control over the servo motors according to the displacements and the to-be-detected attack angle.

Multi-degree-of-freedom sub-supersonic wind tunnel large-attack-angle mechanism

The invention discloses a model tail boom device suitable for a fighter wind tunnel test. The model tail boom device comprises a motion mechanism, a follow-up mechanism, a base, a support rod and a motion controller, wherein the base is fixedly arranged above a wind tunnel closed test section, the motion mechanism and the follow-up mechanism are arranged on the base, and a test model is arranged at the tail end of the motion mechanism through using the support rod; the motion mechanism comprises a Y-direction motion assembly, a yaw angle motion assembly, a Z-direction motion assembly and a pitch angle motion assembly; and the follow-up mechanism comprises two follow-up assemblies which are located on the left side and the right side of the Y-direction movement assembly and are symmetricalin structure. According to the model tail boom device, motion control of the fighter aircraft test model in the yaw angle, the pitch angle, the Y direction and the Z direction is realized, the pitch angle and the yaw angle of the test model can be continuously changed in a large range, the center of the model can be guaranteed to be always located on the axis of the wind tunnel test section in thechanging process, the model tail boom device has small supporting blockage degree and small interference on a support of the model, and accurate and continuous aerodynamic data of a military fighterin a wind tunnel test can be effectively obtained.

Model tail boom device suitable for fighter wind tunnel test

The invention discloses an angle control device for a tunnel attack-angle mechanism, and solves a problem that there is no angle control device which can eliminate the mechanical wear of the attack-angle mechanism and an error caused by mechanical transmission. The device comprises a stay cord sensor which is disposed in an upper column room of a tunnel, wherein a cord pulling end of the stay cord sensor is fixed on a sliding block of the attack-angle mechanism, and the sliding block is fixedly connected with a bent knife of the attack-angle mechanism; and a measurement and control system which is electrically connected with the stay cord sensor. A driving mechanism of the attack-angle mechanism drives the sliding block to slide. When the sliding block slides, a stay cord of the stay cord sensor is enabled to extend or withdraw. The stay cord sensor outputs voltage data to the measurement and control system, and the measurement and control system obtains an attack angle value according to the received voltage data and a fitting attack angle voltage formula. A control device of the attack-angle mechanism controls the attack angle of the attack-angle mechanism according to the attack angle value.

Angle control device for tunnel attack-angle mechanism

The utility model discloses an angle of attack safe operation protection device, including a bevel gear (1), the 2nd bevel gear (2), bearing frame (3), shaft coupling (4) and multi -turn potentiometer (5), a bevel gear (1) is the gear in the angle of attack mechanism, the 2nd bevel gear (2) with mesh mutually a bevel gear (1), the 2nd bevel gear (2) are passed through bearing frame (3) drive shaft coupling (4) coaxial rotation, multi -turn potentiometer (5) link to each other and rotate together with shaft coupling (4). The utility model discloses it is simpler than original mechanism, simple to operate, the precision is high, can satisfy the needs of protection wind -tunnel angle of attack mechanism safe operation.

Li Shiqiang

Papers

Supersonic-speed wind tunnel test section regulating device with angle adjustment function

Transonic supersonic speed wind tunnel large-attack-angle mechanism with translational function

Angle control device for tunnel attack-angle mechanism

Pore plate capable of adjusting aperture online

Angle of attack safe operation protection device