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Method and system for airplane airspeed calibration based on static pressure error correction

A static pressure error, static pressure technology, applied in the field of aircraft airspeed calibration, systems and computer storage media, can solve problems such as reducing airspeed calibration accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2019-10-18
COMAC +1
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Problems solved by technology

Therefore, the existing barometric method reduces the accuracy in the airspeed calibration
In addition, existing barometric methods can only be used for airspeed calibration of aircraft flying at low altitudes

Method used

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  • Method and system for airplane airspeed calibration based on static pressure error correction
  • Method and system for airplane airspeed calibration based on static pressure error correction
  • Method and system for airplane airspeed calibration based on static pressure error correction

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. The following descriptions are exemplary and not limiting to the present invention. Any other similar situations will also fall within the protection scope of the present invention.

[0040] refer to figure 1 As shown, the present invention exemplarily provides a system 100 for calibrating aircraft airspeed based on a static pressure error correction model. The system 100 includes: a ground air pressure sensor 101 for measuring and obtaining field pressure P 0 ; Differential GPS102, used to measure and obtain the geometric height H; Total pressure sensor 103, used to obtain the measured total pressure Pt meas ; Static pressure sensor 104, used to obtain the measured static pressure Ps meas ; The total temperature sensor 105 is used to obtain the measurement total temperature Tt meas ; and the static pressure error correction devic...

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Abstract

The invention provides a method for airplane airspeed calibration based on a static pressure error correction model. The method comprises steps of acquiring basic measurement data; establishing a static pressure error correction model; initializing parameters of the static pressure error correction model; calculating and obtaining model static temperature according to the static pressure error correction model; calculating and obtaining model static pressure; calculating the static pressure error correction model according to the calculated model static pressure and the measured static pressure; determining the static pressure error correction model; and correcting the measured static pressure based on the determined static pressure error correction model, so as to acquire far field staticpressure according to corrected measured static pressure to complete airspeed calibration. The invention further provides a corresponding system and a computer readable medium.

Description

technical field [0001] The present invention relates to the measurement and calibration of flight data, more specifically, to a method for calibrating aircraft airspeed based on a static pressure error correction model, a corresponding system and a computer storage medium. Background technique [0002] Air data systems are critical to the successful mission of an aircraft and are available based on the flight environment around the aircraft. In the measurement and calibration of air data system flight data, air data system flight data generally includes indicated and true airspeed, barometric altitude, ambient air temperature, angle of attack and sideslip angle, and Mach number and rate of climb. Typically, the sensed total pressure (pitot tube pressure) and static pressure are converted (via mechanisms in the instrument itself) into indications for the altimeter, vertical speed indicator, airspeed indicator and Mach meter. Calibration can provide other parameters needed by...

Claims

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Application Information

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IPC IPC(8): G01P21/02
CPCG01P21/02
Inventor 维塔里·普加乔夫安德烈·弗洛拉杨慧方阳谢立恒高婧
Owner COMAC
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