Novel air bridge device with calibration-free function

Abstract

The invention discloses a novel air bridge device with a calibration-free function. The novel air bridge device belongs to the technical field of aircraft power simulation tests, and aims to solve theproblem that the whole-process calibration must be completed again to obtain a disturbing force on a balance when an air bridge is damaged or the relative position of the air bridge and the balance is changed in the test process. The novel air bridge device comprises a first straight pipeline, a second straight pipeline, an L-shaped bent pipe and a third straight pipeline which are sequentially connected end to end, wherein elastic ventilation devices are arranged at joints between the first straight pipeline and the second straight pipeline, between the second straight pipeline and the L-shaped bent pipe and between the L-shaped bent pipe and the third straight pipeline; and the upper end of the first straight pipeline is connected with the measuring end of the balance, the right end ofthe third straight pipeline is connected with the fixed end of the balance, and the axis of the third straight pipeline is perpendicular to the axes of the first straight pipeline and the second straight pipeline. According to the novel air bridge device with the calibration-free function, the disturbing force on the balance can be rapidly obtained under the condition that air bridge overall calibration and balance combined calibration are not carried out.

Description

technical field [0001] The invention relates to an air bridge, in particular to a novel air bridge device with a calibration-free function, and belongs to the technical field of aircraft dynamic simulation tests. Background technique [0002] Aircraft power system simulation test (dynamic simulation test) is an essential link in the development of aerospace vehicles, mainly including nozzle performance test, jet flow interference wind tunnel test on the aerodynamic characteristics of the whole machine, propeller slipstream wind tunnel test, civil Turbine power simulation (TPS) wind tunnel test, etc. These tests directly or indirectly require high-pressure air to realize dynamic simulation, such as high-pressure air directly generating jet flow, high-pressure air driving a turbine dynamic simulator to generate culvert jet flow, high-pressure air driving an air motor to drive a propeller to generate slip flow, etc. Therefore, this type of test or research has a common feature...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a new type of air bridge device with a calibration-free function, so as to solve the problem that the air bridge is damaged or the relative position with the balance changes during the test, and the whole process of calibration must be completed again, so as to obtain the disturbance to the balance The problem

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