A circuit board locking structure for high-speed rotation test in low-speed wind tunnel

A locking structure, high-speed rotation technology, used in aerodynamic testing, testing of machine/structural components, instruments, etc., can solve problems such as circuit board damage, and achieve the effect of reducing direct force and avoiding damage.
CN108931352BActive Publication Date: 2020-11-06LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
Publication Date
2020-11-06

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Abstract

The invention discloses a circuit board locking structure used in a high speed rotation test of a low speed wind tunnel. The circuit board locking structure includes a circuit board, a base plate anda prism. The base plate is fixedly connected with the prism. Sides of the prism are provided with grooves in the direction of the axis. The circuit board is vertically connected with the base plate through an electric connector. One side edge, perpendicular to the base plate, of the circuit board is clamped into one groove of the prism. The side edge on the top end of the circuit board is fixedlyconnected with a locking structure, and one end of the locking structure is fixedly connected to the end face of the prism through screws. The prism, the base plate and the circuit board together forma three-dimensional prism fixing connection structure, and the circuit board and the prism are connected through a U-shaped structure, so that the three-dimensional structure is completely fixed. Inthis way, force acting on the circuit board in a high speed rotation test can be decomposed through the prism and positioning pieces, the direct force on the circuit board is reduced, and the circuitboard is prevented from being damaged.
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Description

technical field

[0001] The invention relates to the field of low-speed wind tunnel measurement, in particular to a circuit board locking structure used in low-speed wind tunnel high-speed rotation tests. Background technique

[0002] The rotor is the key moving part of the helicopter. The performance of the rotor is the key to the performance of the helicopter. The aerodynamic characteristics of the helicopter rotor have an important impact on the performance, flight quality, noise characteristics, vibration characteristics, etc. of the helicopter. During the development of helicopters, many experimental studies are carried out, among which the model wind tunnel test is one of the basic test items. Through wind tunnel tests, important parameters such as rotor performance, blade surface pressure, and aeroelastic torsion can be obtained. At present, the acquisition of blade surface pressure and aeroelastic torsion parameters mainly adopts the electrical measurement method, wh...

Claims

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