Analiza utjecaja različitih distribucija proizvodne pogreške kao slučajne veličine na let nevođene rakete

master's thesis

• Title (english): Influence analysis of different distributions of manufacturing error as a stohastic parameter on flght of unguided rocket
• Author: Vanja Pajović
• Mentor: Milan Vrdoljak (mentor)
• Mentor: Zvonko Trzun (komentor)
• Committee member: Tatjana Gazivoda Kraljević (predsjednik povjerenstva)
• Committee member: Zvonko Trzun (član povjerenstva)
• Committee member: Milan Vrdoljak (član povjerenstva)
• Granter: University of Zagreb; (Croatian Defence Academy "Dr. Franjo Tuđman"); Zagreb
• Defense date and country: 2023-07-03, Croatia
• Scientific / art field, discipline and subdiscipline: SOCIAL SCIENCES; Security and Defense Science
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology

Abstract

Cilj ovog rada je analiza utjecaja pogreške izvedbe mlaznice na odstupanje putanja i padnih
točaka nevođene rakete. Simulacija leta provodi se pomoću programskog paketa MATLAB.
Model leta sa šest stupnjeva slobode gibanja (6DOF) se koristi za prikazivanje početnih
parametara stanja atmosfere kao determinističkih veličina. Poremećaji stanja rakete uzrokovani
pogreškom izvedbe mlaznice simuliraju se za tri razine kvalitete, prema više distribucija
vjerojatnosti, a dobiveni rezultati se uspoređuju s putanjom rakete u standardnoj ICAO atmosferi
i proizvedenoj bez proizvodnih pogrešaka. Položaj ravnine pogreške je stohastička veličina
disperzirana prema uniformnoj distribuciji, a intenzitet svake pogreške je stohastička veličina
disperzirana prema normalnoj i Rayleighevoj distribuciji. Na kraju rada procjenjuje se koji se
rezultati bolje slažu s teorijom gađanja i daju se preporuke za provođenje sličnih budućih
simulacija.

Abstract (english)

The aim of this paper is to analyze the influence of the nozzle performance error on the deviation
of the trajectory and drop points of an unguided rocket. The flight simulation is performed using
the MATLAB software package. A six-degree-of-freedom (6DOF) flight model is used to
represent the initial parameters of the state of the atmosphere as deterministic quantities.
Disturbances of the rocket state caused by the nozzle performance error are simulated for three
quality levels, according to a larger probability distribution, and the obtained results are
compared with the trajectory of the rocket in a standard ICAO atmosphere and produced without
manufacturing errors. The position of the error plane is a stochastic quantity dispersed according
to an uniform distribution, and the intensity of each error is a stochastic quantity dispersed
according to the normal and Rayleigh distributions. At the end of the paper, it is evaluated which
results agree better with the shooting theory and recommendations are given for conducting
similar future simulations.

• Keywords: pogreška izvedbe mlaznice; normalna distribucija; Rayleigheva distribucija; 6DOF; odstupanje putanja; rasipanje
• Keywords (english): nozzle performance error; normal distribution; Rayleigh distribution; 6DOF; path deviation; scattering
• Language: croatian
• URN:NBN: urn:nbn:hr:249:754519
• Study programme: Title: Military Engineering; Study programme type: university; Study level: graduate; Academic / professional title: MAGISTAR/MAGISTRA INŽENJER/INŽENJERKA VOJNOG INŽENJERSTVA (MAGISTAR/MAGISTRA INŽENJER/INŽENJERKA VOJNOG INŽENJERSTVA)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2024-01-22 09:48:02