Analiza vzdolžne dinamične stabilnosti letala

diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo - Projektno aplikativni program

Janez Černigoj (Author), Igor Petrović (Mentor)

Abstract

V diplomskem delu smo opravili analizo vzdolžne dinamične stabilnosti preizkušanega letala. Z izpeljanimi enačbami smo iz predpostavljenih vrednosti hitrosti in višine leta izvedli preliminarno analizo, v okviru katere smo izračunali dinamične parametre letala za pet različnih konfiguracij. Izvedli smo devet preizkusnih letov, v katerih smo preverjali dolgo in kratko periodično nihanje letala. Iz izmerjenih krivulj hitrosti in vpadnega kota smo po končanih letih določili dinamične parametre letala. Rezultati preizkusnih letov so pokazali, da je letalo dinamično stabilno za obe vrsti gibanj v vzdolžni smeri. Naredili smo primerjavo med rezultati preliminarne analize in rezultati preizkušanja. Pri tem smo ugotovili, da rezultati med seboj precej odstopajo. Pri kratko periodičnem nihanju smo zaznali večje odstopanje kot pri dolgo periodičnem nihanju. Glavna vzroka za odstopanje rezultatov sta bila človeški faktor pri nenatančnem vzbujanju nihanja in premajhna ponovljivost preizkusnih točk na posamezno konfiguracijo. Kljub odstopanju lahko trdimo, da je letalo v vzdolžni smeri dinamično stabilno.

Keywords

diplomske naloge;dinamična stabilnost;analiza;letala;preizkušanje v zraku;dolgo periodično nihanje;kratko periodično nihanje;

Data

Language:	Slovenian
Year of publishing:	2023
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[J. Černigoj]
UDC:	629.7:531.3:534.13(043.2)
COBISS:	166556675
Views:	44
Downloads:	9
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Analysis of the longitudinal dynamic stability of an aeroplane
Secondary abstract:	In our thesis, we conducted an analysis of the longitudinal dynamic stability of the tested aircraft. Using derived equations and assumed values for speed and altitude, we carried out a preliminary analysis, during which we calculated the dynamic parameters of the aircraft for five different configurations. We executed nine test flights, during which we examined both the long and short periodic oscillations of the aircraft. From the measured velocity and angle of attack curves, we determined the dynamic parameters of the aircraft after the flights. The results of the test flights showed that the aircraft is dynamically stable for both types of motion in the longitudinal direction. We made a comparison between the results of the preliminary analysis and the flight test results. During this process, we have found that the results differ significantly from each other. In the case of short period oscillation, we observed a larger deviation compared to the long period oscillation. The main reasons for the deviation in the results were the human factor in imprecise excitation of the oscillation and insufficient repeatability of the test points for each configuration. Despite these discrepancies, we can assert that the airplane is dynamically stable in the longitudinal direction.
Secondary keywords:	analysis;dynamic stability;aircraft;flight test;long period oscillation;short period oscillation;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XXII, 74 str.
ID:	19861985