High-precision resistance balance for civil aircraft high-speed wind tunnel test

Abstract

The invention discloses a high-precision resistance balance for a civil aircraft high-speed wind tunnel test, belongs to the technical field of aerodynamic measurement, and aims at solving the problemthat the traditional balance design cannot meet the requirement of civil aircraft high-speed wind tunnel test. The balance comprises a cylindrical balance body with an integrated structure, and the intersection point of the transverse symmetry axis and the longitudinal symmetry axis of the balance body is the center of the balance body; resistance strain beams are symmetrically arranged on the left side and the right side of the center, a resistance strain beam slit is formed in any one of the upper end and the lower end of each resistance strain beam, and the resistance strain beam slits separate one end of each resistance strain beam from the balance body, so that the resistance strain beams form a T-shaped structure. According to the invention, the stability and resistance test sensitivity of the balance in use are improved, and the balance has the advantages of small mutual interference between structures, good overall rigidity, reasonable cooperation with related test pieces andthe like.

Description

Technical field: [0001] The invention belongs to the technical field of aerodynamic measurement, and in particular relates to a high-precision resistance balance used for high-speed wind tunnel tests of civil aircraft. Background technique: [0002] The resistance encountered by civil aircraft during flight is an important factor affecting operating costs, so it is particularly important to accurately measure resistance parameters in aircraft wind tunnel tests. Traditional wind tunnel balance design mainly considers the design matching of each aerodynamic component, which often reduces the sensitivity of the drag element to achieve better comprehensive mechanical properties. However, with the rapid development of the civil aircraft field, the measurement standards for important parameters in the civil aircraft wind tunnel test are constantly improving, especially for the resistance parameters, the traditional balance design concept can no longer meet the needs of high-precis...

AI Technical Summary

Problems solved by technology

However, with the rapid development of the field of civil aircraft, the measurement standards for important parameters in civil aircraft wind tunnel tests are constantly improving, especially for resistance parameters. The traditional balance design concept can no longer meet the needs of high-precision testing, so targeted research and development are urgently needed And design a high-precision resistance balance suitable for civil aircraft high-speed wind tunnel test to meet the demand

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