Wind tunnel testing device for deformable wing with adjustable attack angle

Abstract

The invention provides a wind tunnel testing device for a deformable wing with an adjustable attack angle. The wind tunnel testing device overcomes the defects that an existing wind tunnel testing device is high in use cost, inconvenient to mount, inflexible in adjustment, complex in structure and the like. The wind tunnel testing device is mechanically composed of a wind tunnel frame, angle iron,a balance platform, a force measuring sensor, a rotary disc, a shaft sleeve, a deformable wing testing wing section and the like. The attack angle of the wing CAN be adjusted more conveniently and rapidly through the rotary disc with an arc-shaped groove. An experimental data measuring and collecting part is composed of a data collecting card, an industrial personal computer, an upper computer, amonitoring machine, an A / D converter, a D / A converter, a control system, a dynamic strain gauge, a steering engine, a low-pass filter and the like, and the data collecting card, the industrial personal computer, the upper computer, the monitoring machine, the A / D converter, the D / A converter, the control system, the dynamic strain gauge, the steering engine, the low-pass filter and the like are connected through a CAN-BUS. Compared with the prior art, the mechanical device has the advantages of being easy and convenient to mount, convenient and rapid to operate, high in reliability and the like, and the data collecting technology has the advantages of being efficient in transmission, visual in result, reasonable in storage and the like.

Description

technical field [0001] The invention relates to a wind tunnel test device for a deformable wing with an adjustable attack angle, belonging to the field of mechanical measurement equipment Background technique [0002] As we all know, the geometric shape of a conventional fixed wing is designed according to the specific flight mission, altitude, Mach number and aircraft weight of the aircraft, which is usually optimized for only one design point, while other design points are compromised. The deformed wing can change the aerodynamic shape with the external flying environment, so that the aircraft can always maintain the optimal aerodynamic characteristics during the entire flight process, which will greatly improve the applicability and utilization of the aircraft. It has become an important source of aircraft performance improvement and breakthrough development of a new generation of aircraft, and has important research value. [0003] During the entire research process of ...

AI Technical Summary

Problems solved by technology

The second point is that under the action of aerodynamic loads, the wing will deform elastically, and its deformation performance will be affected

However, most wind tunnel test support devices have disadvantages such as high cost of use, inconvenient installation, inflexible adjustment, and complex structure. It cannot meet the requirements of the deformed wing wind tunnel experiment, and it is urgent to redesign the deformed wing wind tunnel support device

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