A Floating Frame Type Wind Tunnel Strain Balance

Abstract

The invention discloses a floating frame-type wind tunnel strain balance, which solves the problems of weak bearing capacity and poor rigidity of the existing conventional balance, high development cost, complicated processing and poor measurement effect of the special balance during some large load measurement tests. question. The floating frame type large load capacity wind tunnel strain balance includes a first inner shaft, a floating frame body and a second inner shaft. The front and rear fixed sections of the floating frame are rigidly fixedly connected with the first inner shaft and the second inner shaft respectively; , the floating frame body and the second inner shaft form an integral structure. The inner diameter of the elastic measuring element group and the model end of the floating frame is larger than the outer diameter of the corresponding part of the inner shaft along the axial direction, that is, the floating part of the floating frame can freely deform and move along the axial, circumferential and rolling directions. The invention has the advantages of simple structure, large load capacity, high rigidity and measurement accuracy, low cost and good versatility.

Description

technical field [0001] The invention relates to a six-component force-measuring balance in a subtransonic wind tunnel, in particular to a strain balance in a floating frame-type large-load-capacity wind tunnel, which belongs to the technical field of experimental aerodynamic measurement. Background technique [0002] The wind tunnel balance is the core measurement equipment in the wind tunnel force test, which is used to obtain the magnitude and action point of the aerodynamic load acting on the test model. With the continuous development of aircraft development technology and wind tunnel test technology, it puts forward higher requirements for the measurement accuracy, bearing capacity, stiffness, and response frequency of the wind tunnel balance: for example, for the tension belt support test technology, the requirements The balance has a high load-bearing capacity, and the balance-support system also needs to have a high system rigidity; for example, for the vector force ...

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the technology of the present invention is: to overcome the above-mentioned deficiencies of the prior art, and aim at the weak bearing capacity and poor rigidity of the existing conventional balances and the high development cost, complicated processing and assembly errors of the existing conventional balances during some large-load measurement wind tunnel tests Large load capacity, poor measurement effect, etc., provide a floating frame type large load capacity wind tunnel strain balance with high bearing capacity, high rigidity and high measurement accuracy. The invention has simple structure, low cost, easy processing and assembly, and good versatility

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