Rib type micro-axial force annular two-component strain balance

Abstract

The invention discloses a rib type micro-axial force annular two-component strain balance. The rib type micro-axial force annular two-component strain balance is used for accurately measuring the rotor wing load in a wind tunnel test, is arranged between a rotor wing system and a power system, and is characterized by comprising a fixed end and a floating end which are nested inside and outside, one of the fixed end and the floating end is fixedly connected with the rotor wing system, and the other one of the fixed end and the floating end is fixedly connected with the power system; the fixed end and the floating end are connected through a strain beam, and a torque measuring unit and a tension measuring unit are arranged on the strain beam. The balance can measure the residual tension of the rotor wing while measuring the torque of the rotor wing shaft.

Description

technical field [0001] The invention relates to the technical field of aeronautical dynamometer test measurement, in particular to a rib-type micro-axial force annular two-component strain balance. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Helicopter rotor technology is one of the core technologies of helicopter development, and its test technology is one of the key technologies. In recent years, with the rapid development of various aircraft, the performance requirements for rotors have been continuously improved, and the rotor load measurement test has emerged as the times require. Helicopter rotor tests require real-time measurement of rotor tension, drag, pitching moment, rolling moment, torque and other items. In the helicopter rotor dynamometer test, the traditional force measurement method is to install a rotor balance and...

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Problems solved by technology

[0004] However, in the actual test process, the torque balance also transmits part of the rotor pulling force while obtaining the rotor shaft torque, that is, part of t

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