Real-time inlet flow field distortion processing device

Abstract

The invention relates to a real-time inlet flow field distortion processing device, which comprises a control and data recording module, a signal acquisition and processing module, a power supply module, a backplane bus and a reinforced chassis, wherein the control and data recording module is used for acquiring, processing and storing control data for the whole device; the signal acquisition andprocessing module is composed of multiple AD acquisition units and a DSP data processing unit; each AD acquisition unit acquires inlet flow field signals; and the DSP data processing unit processes the acquired inlet flow field signals. The device of the invention is installed on a test machine, real-time acquisition and calculation of inlet exit flow field data can be realized, multipath high-sampling rate dynamic temperature, dynamic pressure data and multipath low-sampling rate steady-state pressure data are converted to three characteristic parameters: turbulence, a comprehensive distortion index and a temperature distortion index, and thus, real-time processing of the inlet flow field distortion indexes can be realized.

Description

technical field [0001] The invention belongs to the technical field of airborne data collection and processing, and in particular relates to a real-time processing device for flow field distortion of an inlet. Background technique [0002] In the aero-engine inlet / engine compatibility test flight, a measurement rake is often installed at the inlet outlet / engine inlet, and sensors are installed on the rake to measure the flow field parameters of the engine inlet under different flight attitudes to calculate the flow field distortion index. However, due to the high sampling rate of the dynamic pressure and dynamic temperature measurement parameters of the engine inlet flow field (usually 2kHz), the number is large (usually one type parameter contains more than 30 channels), and the telemetry transmission occupies too much bandwidth to be transmitted to the ground through the telemetry equipment. For the real-time monitoring of the quality of the intake airflow field, the dynam...

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Problems solved by technology

[0003] The purpose of the present invention is to design a real-time processing device for the flow field distortion of the intake port, so as to solve the technical problem that the remote measurement and transmission of the flow field data of the engine intake port cannot be realized at present.

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