The study of static and dynamic characteristics of atmosphere pressure measuring in airspeed tube

Аuthors

Kostyukov V. M.^*, Tran Q. D.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: kost_slv@mail.ru
**e-mail: tranduc@mail.ru

Abstract

Operation of air data system (ADS) assumes the application of atmosphere static and dynamic pressure measurement affecting an aircraft. At present the type of airspeed tube construction and a place of its mounting are selected through experimental research in wind tunnel [1, 2].

With computing technologies development, we got the possibility to predict gas pressure distribution over aircraft surface depending on an aircraft design, flight conditions and aircraft state vector [3, 4].

Pressure distribution determination over aircraft surface using up-to-date software is a relevant task, allowing advance in mathematical design of ADS and substantially reduce the extent of experimental examinations, providing high accuracy of measurements due to more detailed measuring process models.

Having calculated pressure distribution over aircraft surface with due account for change stipulated by deflection of incidence angle and gliding, velocity, Reynolds number, etc, one can optimize the point of airspeed tube mounting, as well as provide theoretical calculations of pressure measuring error. All this contributes to compensating this error programmatically with ADS onboard computer.

The goal of this work consists in obtaining static and dynamic characteristics of processes taking place in airspeed tube.

Keywords:

static pressure, airspeed tube, static and dynamical distortion model, air data system

References

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