Indicated airspeed error due to gradual bloking of pitot tube with drain hole

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU146441" target="_blank" >RIV/00216305:26210/22:PU146441 - isvavai.cz</a>

Výsledek na webu

<a href="https://journals.vilniustech.lt/index.php/Aviation/article/view/15963/10901" target="_blank" >https://journals.vilniustech.lt/index.php/Aviation/article/view/15963/10901</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3846/aviation.2022.15963" target="_blank" >10.3846/aviation.2022.15963</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Indicated airspeed error due to gradual bloking of pitot tube with drain hole

Popis výsledku v původním jazyce

Problem of pitot tube blocking is persistent because even in the recent past there have been several accidents based on inaccurate information from air speed indicators. This problem was caused by a partial or complete blockage of the total pressure probes. Certain principles of blocking detection are well known. This article describes research into another principle of the gradual blocking detection of the pitot tube with drain holes. Pitot tubes with different blockage ratios were made and tested. A gradual blocking curve was described. The independence of velocity magnitude for the investigated airspeeds was found. This research shows that the drain hole design can be useful for a pitot tube blockage detection. The principle is based on another pitot tube with a larger drain hole area. Airspeed error due to gradual blocking grows faster on the other pitot tube. Gradual blocking of both pitot tubes results in a difference in indicated airspeeds, even at constant speed flight and before full blockage. This airspeed difference can warn a pilot and gives him or her a valuable time to use emergency procedures.

Název v anglickém jazyce

Indicated airspeed error due to gradual bloking of pitot tube with drain hole

Popis výsledku anglicky

Problem of pitot tube blocking is persistent because even in the recent past there have been several accidents based on inaccurate information from air speed indicators. This problem was caused by a partial or complete blockage of the total pressure probes. Certain principles of blocking detection are well known. This article describes research into another principle of the gradual blocking detection of the pitot tube with drain holes. Pitot tubes with different blockage ratios were made and tested. A gradual blocking curve was described. The independence of velocity magnitude for the investigated airspeeds was found. This research shows that the drain hole design can be useful for a pitot tube blockage detection. The principle is based on another pitot tube with a larger drain hole area. Airspeed error due to gradual blocking grows faster on the other pitot tube. Gradual blocking of both pitot tubes results in a difference in indicated airspeeds, even at constant speed flight and before full blockage. This airspeed difference can warn a pilot and gives him or her a valuable time to use emergency procedures.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20304 - Aerospace engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

AVIATION Research Journal of Vilnius Gediminas Technical University

ISSN

1822-4180

e-ISSN

—

Svazek periodika

26

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

LT - Litevská republika

Počet stran výsledku

8

Strana od-do

64-71

Kód UT WoS článku

000778853000006

EID výsledku v databázi Scopus

2-s2.0-85127913163