National Repository of Grey Literature 23 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Calculation of Lift Distribution along Wing Span using the Glauert's Method
Kubíček, Martin ; Doupník, Petr (referee) ; Zikmund, Pavel (advisor)
This work is focused on a simplified calculation lift distribution along wing span of aircraft RAPID 200. This is a two –seat, all metal lower wing airplane with a straight wing and usual setting of power unit. Glauert method is used to calculate lift distribution along wing span with program MathCad.
Wind tunnel experiment of scaled car model preparation
Zedník, Roman ; Doupník, Petr (referee) ; Matějů, Jiří (advisor)
This master thesis focuses on designing of an external six-component balance. This universal concept would provide access of results from different models of wings, aircraft and automobiles with relatively small scales. This work also includes theoretical background needed in aerodynamic testing, analysis of 1D beam element model of scale and explanation of components used in scale. Lastly methods of calibration and measurement in aerodynamic tunnel are described, which can be adopted for this design to achieve the adequate level of accuracy.
CFD analysis of turboprop engine air intake
Przeczek, Jan ; Doupník, Petr (referee) ; Popela, Robert (advisor)
This diploma thesis is focused on CFD analysis of M-601 turboprop engine nacelle mounted on L-410 commuter aircraft. Calibrating exercise is performed at the beginning of the thesis in order to be more familiar with CFD problems. Next parts of the thesis are chronologically divided with respect to project progress, namely suitable geometrical model creation, mesh creation in order to obtain computational model, calculation using CFD methods, results evaluation and proposal of possible construction transformation at the conclusion.
Study of Inertial Particle Separator in a typical turboprop engine
Skála, Adam ; Doupník, Petr (referee) ; Popela, Robert (advisor)
This thesis focuses on ingestion of foreign objects into standard turboprop engine GE H80 situated in aircraft Let L-410 Turbolet. Aim of this study is to create methodology of numerical simulation of particle movement inside the engine, which could be used during design process of Inertial Particle Separator device. Thesis consists of backward-facing step benchmark study which validates used methodology. Second part describes flow field calculation and numerical setup. The last part is dedicated to particle tracking analysis. Simulated trajectories are visually investigated, and coordinates of particle impacts at 1st rotor of a compressor are correlated to position of real observed damage.
Design of turbine engine inlet in NACA-duct configuration
Babinec, Viktor ; Navrátil, Jan (referee) ; Doupník, Petr (advisor)
This master thesis is focused on design and aerodynamic analysis of subsonic turbine engine inlet in NACA duct configuration for unmanned aircraft. The first part of this paper is methodics for design considerations for NACA duct, which is based on theoretical analysis of this type of inlet. The acquired knowledge is used to design an inlet for the specified unmanned aircraft that is subject of CFD analysis. The impact of deflectors is considered in the evaluation and the solution is compared to the S-duct inlet. The proposed inlet with deflectors meets DC60 distortion criterion for all specified cases and the pressure losses requirements are met for lower velocities. Based on the results, the recommended application is for aircraft that flies in optimal design conditions for most of the mission.
Design of Light Unmanned Reconnaissance Aircraft
Kadidlo, Miroslav ; Šplíchal, Miroslav (referee) ; Doupník, Petr (advisor)
The Thesis solves design of light unmanned reconnaissance aircraft carrying 3 kg payload. Based on statistical research chooses the field of long endurance flights, trying to manage problem via solar powered batteries. Difficulities and advantages of this issue are researched and optimal aircraft setup is discussed.
Numerical Study Of Pulsating Jet At Moderately Small Reynolds Numbers
Dolinský, Jiří ; Doupník, Petr (referee) ; Popela, Robert (advisor)
Tato numerická studie je zaměřená na axisymetrickou pulzní trysku při zachování relativně nízkých Reynoldsových čísel a její fyzikální podstatu, která dosud nebyla zcela vysvětlena. Hlavním cílem práce bylo prozkoumat a zhodnotit vliv přidání periodického komponentu rychlosti ke stacionární složce rychlosti. Nejdříve byl řešen stacionární případ, poté byla do simulace přidána pulzace a byla vytvořena nestacionární simulace. Numerické řešení stacionárního případu bylo ověřeno pomocí asymptotického řešení, které předložil Hermann Schlichting [44]. Přesnost tohoto analytické řešení byla opravena na základě experimentálních poznatků Andradeho a Tsiena [1]. Pomocí této korekce je zmenšena oblast singularity řešení v blízkosti počátku proudění. Z matematického pohledu se v podstatě jedná korekcí prvního řádu, což bylo dokázáno Revueltou a spol [36]. Samotné analytické řešení bylo vytvořeno v MATLABu zatímco pro numerické řešení byl použit software Ansys Fluent. Při numerické simulaci byly Navier-Stokesovi rovnice integrovány ve své plné formě za pomoci algoritmu založeném na tzv. rovnici korekce tlaku. Pulzační tryska byla poté řešena pro různé parametry tak, aby bylo možné zhodnotit vliv jednotlivých parametrů na evoluci takto modulovaného proudu. Nakonec byla posouzena možná aplikace pulzních trysek v průmyslu s ohledem na možnost snížení emisí v průběhu spalovacího procesu.
Overview and evolution of CFD methods
Vodička, Vít ; Dofek, Ivan (referee) ; Doupník, Petr (advisor)
The bachelor thesis is focused on mapping and characterization of CFD methods in their historical context. It compares advantages and disadvantages of different types and mention the areas in which have been used these methods.
Competition aircraft wing tips
Zima, Martin ; Koutník, Tomáš (referee) ; Doupník, Petr (advisor)
This bachelor thesis deal with wing tip design of airplane for competition. Airplane named FabricK I is design for Air Cargo Challenge competition. The first part of bachelor thesis is focused on description of competition and flight aircraft modes. Hereafter are compared the types of wing tips. Most suitable wing tip is then applied on FabricK I.
Optimization of L-410NG airplane rudder aerodynamic balance
Pištěcká, Kateřina ; Doupník, Petr (referee) ; Popela, Robert (advisor)
The subject of this diploma thesis is a design of rudder aerodynamic balance and its optimization with regard to control forces and vertical tail and fuselage loading in critical flight modes – critical engine failure.

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