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An Online Correction Method for Realizing Long-term Stability of Atmospheric Data Measurement

An atmospheric data and stable technology, applied in measurement devices, fluid pressure measurement, altitude/level measurement, etc., can solve the problems of long time and cumbersome process, and achieve the effect of short time consumption, simple method and good online correction effect.

Active Publication Date: 2022-04-12
CHENGDU KAITIAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has disadvantages such as the need for high and low temperature chambers, the need to disassemble the air data measurement device from the aircraft, the need for special testing equipment, cumbersome procedures, and a long time-consuming process.

Method used

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  • An Online Correction Method for Realizing Long-term Stability of Atmospheric Data Measurement
  • An Online Correction Method for Realizing Long-term Stability of Atmospheric Data Measurement
  • An Online Correction Method for Realizing Long-term Stability of Atmospheric Data Measurement

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Experimental program
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Effect test

Embodiment 1

[0048] This embodiment proposes an online correction method for realizing long-term stability of atmospheric data measurement, which specifically includes the following steps:

[0049] Step 1: Apply a pressure with a pressure value of P1 to the pressure port of the atmospheric data measuring device 1 through the external standard pressurizing device 6 . The pressure port is the pressure port corresponding to the pressure to be corrected.

[0050] Step 2: Send the "first point test command" to the air data measurement device 1 through the display control system 15 installed on the aircraft 14 or other special test equipment and equivalent equipment. The "first point test command" is a command sent by an external device to the atmospheric data measurement device 1 .

[0051] Step 3: When the atmospheric data measuring device 1 receives the "first point test command", the software in the atmospheric data measuring device 1 enters the correction mode; after entering the correctio...

Embodiment 2

[0094] This embodiment is based on the above-mentioned Embodiment 1, such as figure 1 , figure 2 , image 3 , Figure 4 As shown, this embodiment uses an example of correcting the dynamic pressure atmospheric parameter measured by the atmospheric data measuring device 1 on the aircraft 14 for description, and the dynamic pressure original parameter is measured by an internal pressure differential silicon piezoresistive sensor.

[0095] like figure 1 As shown, the atmospheric data measuring device used in this example has 4 types of pressure ports, namely: total pressure port 2 of the atmospheric data measuring device, static pressure port 3 of the atmospheric data measuring device, and pressure port 4 on the upper surface of the probe of the atmospheric data measuring device , and the pressure port on the lower surface of the air data measurement device probe at the opposite end of the upper surface pressure port 4 of the air data measurement device probe.

[0096] The at...

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Abstract

The present invention is an online correction method for realizing long-term stability of atmospheric data measurement, which is used to correct the pressure value P of the atmospheric data measuring device of the aircraft. The first test point and the second test point, and then apply different pressure values ​​to the first test point and the second test point in sequence through the external standard pressure equipment, and measure and calculate the first point test correction coefficient P1Z and the second test point Point test correction coefficient P2F, according to the first point test correction coefficient P1Z and the second point test correction coefficient P2F, the pressure value P of the air data measuring device is corrected, and the pressure altitude Hb, airspeed Vi, Mach number M and ascending and descending speed are carried out. HR solution.

Description

technical field [0001] The invention belongs to the technical field of air data measurement of aircraft, and in particular relates to an online correction method for realizing long-term stability of air data measurement. Background technique [0002] The aircraft relies on the real-time relative motion of itself and the surrounding airflow to complete the flight action. At each stage of the aircraft taking off, climbing, cruising and landing, atmospheric parameters such as air pressure altitude, airspeed, Mach number, and lifting speed are the necessary information for the aircraft to complete flight control, and are crucial to ensuring flight safety. [0003] These parameters are mainly measured by atmospheric data measurement devices. However, atmospheric data measurement devices based on the HB6127 flight atmospheric parameter standard for atmospheric parameter calculation, especially those based on silicon piezoresistive sensors, will drift in atmospheric parameters aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L9/02G01L13/06G01C5/06G01C5/00
CPCG01L9/02G01L13/06G01C5/06G01C5/005
Inventor 粟强杨德祥章德生刘义明裴希伍唐旭谢波张胤颖李微
Owner CHENGDU KAITIAN ELECTRONICS