Aerodinamička svojstva aeroprofila za povećanje brzine leta

undergraduate thesis

• Title (english): Aerodynamic Characteristics of Airfoils for Increased Flight Speed
• Author: Iris Žarković
• Mentor: Andrija Vidović (mentor)
• Committee member: Anita Domitrović (predsjednik povjerenstva)
• Committee member: Miroslav Borković (član povjerenstva)
• Committee member: Željko Marušić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Transport and Traffic Sciences; (Division of Transport); (Department of Air Transport); Zagreb
• Defense date and country: 2015-09-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology; Aircraft Construction and Design

Abstract

Aeroprofil je oblik tijela koje će u strujanju oko njega stvarati uzgon uz relativno mali otpor. Kod povećane brzine leta dolazi do promjena kao što su udarni valovi, zvučna barijera, odvajanje strujnica i slom uzgona. Također dolazi do promjena na tlaku, uzgonu i otporu aeroprofila te dolazi do formiranja Machovih, kosih, odvojenih, povijenih te ekspanzijskih udarnih valova.
Pri povećanim brzinama leta najčešće se upotrebljavaju zrakoplovi sa delta krilima, strelastim krilima te obrnutim strelastim krilima kako bi se spriječilo pomicanje aerodinamičkog centra pri prijelazu iz podzvučnog u nadzvučno područje leta i stvaranje udarnih valova. Strelasta krila stvaraju manje otpora, ali su nestabilnija pri manjim brzinama. Delta krila zbog svog dizajna omogućavaju slijetanje pri velikim brzinama te dostizanje velikih brzina.

Abstract (english)

Airfoil is a body shape that will create lift in airflow around it with a relatively low resistance. At increased air speed occur changes, such as shockwaves, sound barrier, separation of streamlines and stall. High speeds also lead to changes in pressure, lift and drag of the airfoil and also the formation of Mach’s waves, oblique, separated, bow and expansion shockwaves.
In order to prevent dislocation of center of the pressure and the formation of shockwaves in moving from subsonic to supersonic speed special wings are used, such as delta wings, swept wings and forward swept wings. Swept wings create less drag, but are somewhat more unstable at low speeds. Delta wings, because of it's design, allows fast landing speeds and reaching of high flight speeds.

• Keywords: aeroprofil; povećana brzina leta; delta krila; strelasta krila
• Keywords (english): airfoil; increased speed of flight; delta wings; sweptwings
• Language: croatian
• URN:NBN: urn:nbn:hr:119:229085
• Study programme: Title: Traffic and Transport; specializations in: Road Traffic and Transport, Railway Traffic and Transport, Water Traffic and Transport, Air Traffic and Transport, Postal Traffic, Information and Communication Traffic, Urban Traffic and Transport; Course: Air Traffic and Transport; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prometa (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prometa)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2015-09-17 13:20:21