Intake passage air flow real-time calculation system

A technology of air flow and real-time calculation, applied in the direction of volume/mass flow generated by mechanical effects, and the detection of fluid flow by measuring pressure difference. The effect of many factors, real-time efficient calculation, and reliable collection

Inactive Publication Date: 2019-03-12
CHINESE FLIGHT TEST ESTAB
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Problems solved by technology

[0003] In the field of flight test, it is necessary to calculate the air flow of the inlet in real time. The traditional method is to calculate b

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[0014] The present invention will be described in further detail below with reference to the accompanying drawings.

[0015] A real-time calculation system for air flow at the outlet of the intake duct, based on the idea of ​​miniaturization and generalization, with an embedded real-time processing module as the core, using a programmable logic controller for interface conversion, and obtaining the data collected by a general collector through the backplane bus. Raw data. The embedded data real-time processing module processes the acquired data, calculates the air flow at the outlet of the intake duct, stores it in the output buffer, and is sampled by the general collector according to the system configuration.

[0016] like figure 2 As shown in the figure, the real-time calculation system of air flow in the intake port of the present invention includes: a front-end parameter acquisition module and an on-board real-time calculation module for air flow in the intake port;

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Abstract

The invention relates to an intake passage air flow real-time calculation system which comprises a front-end parameter acquisition module and an airborne intake passage air flow real-time calculationmodule. The front-end parameter acquisition module adopts a universal airborne test acquisition system, the airborne intake passage air flow real-time calculation module adopts an embedded processingsystem based on ARM+FPGA+DSP, and the operating system is an embedded Linux operating system. By utilizing the reliable acquisition function of the universal airborne test acquisition system, reliableacquisition of intake passage outlet air flow related parameters is realized; by utilizing the high efficiency of embedded real-time processing, real-time efficient calculation of the intake passageoutlet air flow is realized at an airborne test end, and thus the problem that ground calculation is affected by many factors is avoided.

Description

technical field [0001] The invention belongs to the field of real-time processing of airborne test data, and relates to an airborne calculation technology of an airflow of an air intake of an aircraft, in particular to an airborne real-time calculation system of an air flow of an air intake of an aircraft. Background technique [0002] In the flight test, in order to assess the matching characteristics of the intake port / engine, it is necessary to monitor the air flow at the outlet of the intake port in real time. If these parameters are calculated on the ground, the results will be greatly affected by the quality of the telemetry signal. Therefore, how to realize the real-time calculation of the air flow at the inlet outlet at the airborne acquisition end is an important research content. [0003] In the field of flight testing, it is necessary to calculate the air flow of the inlet in real time. The traditional method is to calculate by post-processing, which has low effic...

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Application Information

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IPC IPC(8): G01F1/34
CPCG01F1/34
Inventor 石冯磊高志远黄如昌彭瑞元王茜
Owner CHINESE FLIGHT TEST ESTAB
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