Analiza prikladnosti primjene aditivne tehnologije za izradu ispitnog modela profila u aerodinamičkom tunelu

undergraduate thesis

• Title (english): Suitability analysis of additive technology application for production of airfoil wind tunnel test model
• Author: Petra Rogošić
• Mentor: Milan Vrdoljak (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2023-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology

Abstract

U okviru ovog rada istražuje se potencijalna primjena aditivnih tehnologija s ciljem optimizacije procesa izrade modela aeroprofila. Ključan izazov koji se razmatra u ovom kontekstu je postizanje visoke preciznosti i kvalitete vanjske geometrije modela, budući da to predstavlja presudni faktor za ažurnost i točnost aerodinamičkih mjerenja. U svrhu procjene kvalitete mjerenja, uspoređuju se dobiveni rezultati s već postojećim podacima o aeroprofilu, koji su rezultat eksperimentalnih mjerenja NASA-e i numeričkih metoda. Rad detaljno opisuje proces konstrukcije i izrade aeroprofila, pri čemu se posebna pažnja posvećuje izradi provrta. Izrada predstavlja poseban izazov u tradicionalnim metodama izrade, obzirom na njihove male dimenzije, koje u konačnici doprinose povećanoj preciznosti mjerenja. Ključna metoda mjerenja koja se primjenjuje u ovom istraživanju uključuje prijenos signala tlaka iz provrta putem poliamidnih cjevčica do piezometarske harfe, stvarajući tako sustav hidrostatskih manometara. Kroz komparaciju rezultata ovih mjerenja s već dostupnim podacima, ovaj rad teži utvrditi prikladnost primijenjenih metoda i eventualno predložiti njihovo poboljšanje kako bi se postigla viša razina preciznosti u okviru eksperimentalnih aerodinamičkih istraživanja.

Abstract (english)

Within the framework of this work, the potential application of additive technologies is investigated with the aim of optimizing the process of making airfoil models. A key challenge considered in this context is the achievement of high precision and quality of the external geometry of the model, since this is a crucial factor for the timeliness and accuracy of aerodynamic measurements. In order to assess the quality of the measurements, the results are compared with the already existing airfoil data, which are the result of experimental measurements by NASA and numerical methods. The paper describes in detail the process of construction and manufacture of airfoils, with special attention being paid to the manufacture of bores. The production of these bores represents a special challenge in traditional production methods, given their small dimensions, which ultimately contribute to increased measurement precision. The key measurement method used in this research involves the transmission of pressure signals from the borehole via polyamide tubes to the piezometric harp, thus creating a system of hydrostatic manometers. By comparing the results of these measurements with already available data, this paper aims to determine the suitability of the applied methods and possibly propose their improvement in order to achieve a higher level of precision in experimental aerodynamic research.

• Keywords: aeroprofil; aditivne tehnologije; aerodinamički tunel
• Keywords (english): airfoil; additive technologies; wind-tunnel
• Language: croatian
• URN:NBN: urn:nbn:hr:235:691054
• Study programme: Title: Aeronautical Studies; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-26 21:16:57