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Measuring device for lag time of airplane airspeed system

A lag time and measurement device technology, applied in the field of aircraft airspeed system lag time measurement devices, can solve the problems of high test requirements, high test cost, and harsh test conditions

Active Publication Date: 2014-06-11
COMAC +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires testing and modification of the aircraft, such as adding a total pressure sensor probe and a cockpit high-speed camera, and rolling on the runway. The test cost is high, the test requirements are high, and the test conditions are harsh.

Method used

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  • Measuring device for lag time of airplane airspeed system
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  • Measuring device for lag time of airplane airspeed system

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Embodiment Construction

[0028] Such as figure 1 As shown, the airspeed system being measured is a device that is part of the aircraft itself. The measured pressure pipeline transmits the pressure at the measured aircraft pressure probe to the measured atmospheric computer, and the computer detects and calculates the pressure-time curve table at the aircraft pressure probe.

[0029] Such as figure 1 As shown, the figure shows a block diagram of the airspeed system dead time measuring device of the present invention. The measurement device includes a flight data input module, a pressure source, an air chamber, a pressure sensor 1, a pressure sensor 2, a pressure sensor 3, an ARINC bus acquisition module and a delay time acquisition module. The measuring device can be respectively connected to the measured airspeed system and the measured pressure pipeline of the aircraft, and can be used to respectively measure the hysteresis time of the airspeed system and the hysteresis coefficient of the pressure pi...

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Abstract

The invention provides a measuring device for lag time of a pressure transmission system. The measuring device comprises a data input module, a pressure source, a first pressure sensor and a delay time collecting module, wherein the pressure source is used for being connected to the output end of the data input module; the first pressure sensor is used for being connected to the output end of the pressure source, the output end of the first pressure sensor is used for being connected to the input end of the pressure transmission system, and the pressure transmission system comprises pressure pipelines; the delay time collecting module is used for being connected with the output end of the pressure transmission system and the output end of the first pressure sensor, the output end of the first pressure sensor outputs a pressure-time curve table of the input end of the pressure transmission system, and the output end of the pressure transmission system outputs a pressure-time curve table of the output end of the pressure transmission system; the delay time collecting module collects and compares the pressure-time curve tables of the input end and the output end of the pressure transmission system to obtain the lag time of the pressure transmission system.

Description

technical field [0001] The invention relates to a measuring device for the lag time of the pressure transmission system, in particular to a measuring device for the lag time of the aircraft airspeed system, which can measure the hysteresis coefficient of the pressure pipeline in the aircraft airspeed system, and can also measure the , pressure piping, air data computer airspeed system lag time. Background technique [0002] When the aircraft is flying, it needs to obtain data such as altitude, airspeed, vertical speed, Mach number, etc., and these data are obtained through the air data system. The traditional air data system consists of full static pressure sensors, full static pressure pipelines and air data computers. The total static pressure sensor is installed outside the machine body, mainly used to accurately collect the total pressure (total pressure) and static pressure of the airflow. The total pressure hole is used to collect the total pressure of the airflow. W...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/00
Inventor 宋歌叶军晖张琛赵春玲严林芳张克志
Owner COMAC
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