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master's thesis
Numerička analiza podvozja helikoptera Bell UH-1 Iroquois
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. urn:nbn:hr:235:111392
Tomich, Jan
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Tomich, J. (2024). Numerička analiza podvozja helikoptera Bell UH-1 Iroquois (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:111392

Tomich, Jan. "Numerička analiza podvozja helikoptera Bell UH-1 Iroquois." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. https://urn.nsk.hr/urn:nbn:hr:235:111392

Tomich, Jan. "Numerička analiza podvozja helikoptera Bell UH-1 Iroquois." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2024. https://urn.nsk.hr/urn:nbn:hr:235:111392

Tomich, J. (2024). 'Numerička analiza podvozja helikoptera Bell UH-1 Iroquois', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 26 December 2024, https://urn.nsk.hr/urn:nbn:hr:235:111392

Tomich J. Numerička analiza podvozja helikoptera Bell UH-1 Iroquois [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2024 [cited 2024 December 26] Available at: https://urn.nsk.hr/urn:nbn:hr:235:111392

J. Tomich, "Numerička analiza podvozja helikoptera Bell UH-1 Iroquois", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:235:111392

Metadata
TitleNumerička analiza podvozja helikoptera Bell UH-1 Iroquois
Title (english)Numerical analysis of helicopter skids for the Bell UH-1 Iroquois
AuthorJan Tomich
MentorIvica Skozrit (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2024-01-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Aviation, Rocket and Space Technology
Aircraft Construction and Design
Abstract
Podvozje helikoptera Bell UH-1 Iroquois služi za oslanjanje helikoptera na podlogu te pruža stabilnost tijekom uzlijetanja i slijetanja. Čvrstoća je vrlo važna karakteristika podvozja, a ona se postiže izradom podvozja od relativno čvrstih i elastičnih materijala poput raznih metala i metalnih legura ili raznih kompozita. Podvozje helikoptera čine dvije simetrične „skije“ koje raspoređuju ukupnu težinu helikoptera i apsorbiraju različite udarce tijekom slijetanja, osiguravajući spuštanje na različite terene i teško dostupna područja kao što su različiti oblici zemlje, snijeg ili vodu, ovisno o zahtjevima helikopter treba izvršiti. Njihova uloga je ključna za ukupnu sigurnost i funkcionalnost helikoptera. Sve numeričke analize podvozja provedene su primjenom programskog paketa Ansys® koji se temelji na metodi konačnih elemenata. Za diskretizaciju numeričkih modela korišteni su dostupni konačni elementi koji pripadaju studentskoj verziji programskog paketa Ansys®. Također, napravljena je verifikacija konačnih elemenata koji su korišteni u numeričkim analizama s pomoću jednostavnijih problema, a rezultati su uspoređeni s dostupnim analitičkim rješenjima. Numeričke analize provedene su na CAD (eng. Computer-aided design) modelu podvozja helikoptera koji je izrađen u programskom paketu Solidworks®. Definirani podaci o konstrukciji, dimenzijama te o opterećenju i rubnim uvjetima određuju numeričku analizu podvozja helikoptera i na temelju toga određena optimalna mreža konačnih elemenata. Prikazani su rezultati statičke numeričke analize helikoptera u više slučajeva slijetanja. Također prikazana je konvergencija rješenja i napravljena je provjera zadovoljava li konstrukcija uvjet čvrstoće te je izvršen kontrolni proračun i određena su potencijalna kritična mjesta na konstrukciji.
Abstract (english)
The landing gear of the Bell UH-1 Iroquois helicopter serves to support the helicopter on the surface and provides stability during takeoff and landing. Strength is a crucial characteristic of the landing gear, achieved through the use of relatively robust and elastic materials such as various metals, metal alloys, or composites. The landing gear consists of two symmetrical skids that distribute the total weight of the helicopter and absorb various impacts during landing, ensuring descent on diverse terrains and challenging areas such as different types of ground, snow, or water, depending on the helicopter's operational requirements. Their role is pivotal for overall helicopter safety and functionality. All numerical analyses were conducted using the Ansys® software package based on the finite element method. Available finite elements belonging to the student version of the Ansys® software package were utilized for the discretization of numerical models. Verification was also performed using simpler finite element problems employed in numerical analyses, and the results were compared with available analytical solutions. Numerical analyses will be carried out on the CAD model of the helicopter landing gear created in the Solidworks® software package. Defined data on construction, dimensions, as well as load and boundary conditions, set the parameters for the numerical analysis of the helicopter landing gear, leading to the determination of the optimal finite element mesh. Results of static numerical analyses for various landing scenarios are presented. Additionally, solution convergence is illustrated, and a check is performed to ensure that the construction satisfies strength requirements. A verification calculation is conducted, identifying potential critical locations on the structure.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:111392
Study programmeTitle: Aeronautical Studies
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka zrakoplovnog inženjerstva (magistar/magistra inženjer/inženjerka zrakoplovnog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-01-21 19:10:19