Aerodinamička svojstva hibridnog dirigibilea

undergraduate thesis

• Title (english): Aerodynamic properties of a hybrid dirigibile
• Author: Rihard Kučera
• Mentor: Dubravko Matijašević (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology

Abstract

Hibridni dirigibilei u novije doba doživljavaju svoju renesansu i nalaze svoju primjenu na raznim područjima ljudske djelatnosti. Kombiniranjem statičkog i dinamičkog uzgona pružaju potencijalnu alternativu nad klasičnim letjelicama naročito u logističkim zahtjevima i letačkim mogućnostima. U ovome radu provodi se aerodinamičko ispitivanje osnovne forme bez pogonskih elemenata i bez aktiviranih upravljačkih površina. Prikazuju se necirkulacijska i cirkulacijska aerodinamička opterećenja prema metolodiji usvojenoj za odabranu klasu letjelice. Nadalje, predstavlja se matematički model te rezultati numeričke implementacije proračuna vrijednosti pridruženih masa translacijskih modova gibanja letjelice. Konačno, komentiraju se dva rješenja cirkulacijskog toka za promatranu geometriju.

Abstract (english)

Latterly, hybrid dirigibiles have seen something of a renaissance. Their application occur in various fields of human activity. Employing the combination of static and dynamic buoyancy, they provide a potential alternative to conventional aircraft in terms of logistical requirements and flight capability. In this paper, the aerodynamic analysis of the basic configuration without propulsion elements nor activated control surfaces is performed. Aerodynamic loads due to circulatory and non-circulatory fluid motion are presented. Furthermore, the mathematical model and results of added masses values due to the translatory motion of dirigibile is presented. Finally, two circulatory flow solutions for the selected geometry are commented.

• Keywords: hibridni dirigibile; necirkulacijski tok; cirkulacijski tok; idealni fluid; viskozni fluid
• Keywords (english): hybrid dirigibile; non-circulatory flow; circulatory flow; ideal fluid; viscous fluid
• Language: croatian
• URN:NBN: urn:nbn:hr:235:970519
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-09-17 19:35:19