Izračun učinaka smicanja vjetra na performanse aviona

undergraduate thesis

• Title (english): Calculation of Windshear Effects on the Aircraft Performance
• Author: Dona Jelić
• Mentor: Davor Franjković (mentor)
• Committee member: Karolina Krajček Nikolić (predsjednik povjerenstva)
• Committee member: Dragoslav Dragojlović (član povjerenstva)
• Committee member: Anita Domitrović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Transport and Traffic Sciences; (Division of Aeronautics); (Department of Aeronautics); Zagreb
• Defense date and country: 2022-07-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Traffic and Transport Technology; Air Traffic

Abstract

Meteorologija znatno utječe na sigurnost leta. Vjetar je pretežno vodoravno strujanje zraka, određeno smjerom i brzinom. Smicanje vjetra jedna je od najopasnijih meteoroloških pojava u zrakoplovstvu i definira se kao prostorna ili vremenska promjena brzine i smjera vjetra. Naglo mijenja aerodinamičke postavke leta pa zrakoplov naglo propinje ili naglo propada. Horizontalno i/ili vertikalno smicanje vjetra pri polijetanju dovodi do iznenadnog gubitka brzine leta i smanjenja brzine uzdizanja zrakoplova, a pri slijetanju dovodi do iznenadnog gubitka brzine i prividnog gubitka snage što može rezultirati katastrofalnim posljedicama. U ovom radu definirano je smicanje vjetra i njegov utjecaj na zrakoplov. Iznenadna promjena leđnog i čeonog vjetra uzrokuje smanjivanje uzgona što dovodi do spuštanja zrakoplova i može biti vrlo opasno pri malim visinama. Također su opisani uređaji za mjerenje i prepoznavanje smicanja vjetra, postupci pilota i navedene su nesreće uzrokovane smicanjem vjetra.

Abstract (english)

Meteorology significantly affects flight safety. Wind is a mostly horizontal flow of air, determined by direction and speed. Wind shear is one of the most dangerous meteorological phenomena in aviation and is defined as a spatial or temporal change of in wind speed and direction. It abruptly changes the aerodynamic setting of the flight, so the aircraft suddenly climbs or sinks. Horizontal and/or vertical wind shear during take-off leads to a sudden loss of airspeed and a reduction of the rate of climb, and during landing it leads to a sudden loss of airspeed and apparent loss of thrust which can result in catastrophic consequences. This paper defines wind shear and its impact on an aircraft. A sudden change in the tailwind and headwind causes a loss in lift which leads the aircraft to descent and can be very dangerous at low heights. Devices for measuring and recognizing wind shear, pilot procedures and accidents caused by windshear are also described.

• Keywords: zrakoplov; smicanje vjetra; mali propad; performanse zrakoplova
• Keywords (english): aircraft; wind shear; microburst; aircraft performance
• Language: croatian
• URN:NBN: urn:nbn:hr:119:798737
• Study programme: Title: Aeronautics; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka aeronautike (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka aeronautike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-07-22 14:05:15