Design of turbine engine inlet in NACA-duct configuration

Táto diplomová práca sa zaoberá návrhom a aerodynamickou analýzou subsonického vstupného ústrojenstva v prevedení NACA vstup pre prúdový motor osadený v bezpilotnom prostriedku. Súčasťou práce je teoretický rozbor NACA vstupu, na ktorého základe je vytvorená metodika návrhu sacieho kanálu s týmto vstupom. Získané znalosti sú použité pri vytvorení sacieho kanálu pre zadaný bezpilotný prostriedok, ktorý je podrobený CFD analýze. Pri vyhodnotení je braný do úvahy vplyv deflektorov a výsledky sú porovnané so sacím kanálom typu S-duct. Navrhnuté vstupné ústrojenstvo pri použití deflektorov spĺňa kritérium distorzie DC60 pre všetky zadané prípady a podmienku tlakových strát pre prípady pri nižších rýchlostiach. Na základe zistených výsledkov, odporúčaná aplikácia je pre lietadlo vystavené optimálnym návrhovým podmienkam po väčšinu charakteristickej misie.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.

The large area detector onboard the eXTP mission

The Large Area Detector (LAD) is the high-throughput, spectral-timing instrument onboard the eXTP mission, a flagship mission of the Chinese Academy of Sciences and the China National Space Administration, with a large European participation coordinated by Italy and Spain. The eXTP mission is currently performing its phase B study, with a target launch at the end-2027. The eXTP scientific payload includes four instruments (SFA, PFA, LAD and WFM) offering unprecedented simultaneous wide-band X-ray timing and polarimetry sensitivity. The LAD instrument is based on the design originally proposed for the LOFT mission. It envisages a deployed 3.2 m2 effective area in the 2-30 keV energy range, achieved through the technology of the large-area Silicon Drift Detectors - offering a spectral resolution of up to 200 eV FWHM at 6 keV - and of capillary plate collimators - limiting the field of view to about 1 degree. In this paper we will provide an overview of the LAD instrument design, its current status of development and anticipated performance

Open-wheel aerodynamics

This bachelors thesis is focused on review of the aerodynamic charakteristics of the rotating wheels for formula cars. This paper describes the nature, origin and development of flow structures in the wheel area, affecting other parts of the vehicle. To create a holistic view of the aerodynamic charakteristics of the wheel, it is necesary to include impacts on changing wheel geometry while driving, which significantly changes the nature of the flow. Among the observed effects include deformation of the wheel, its camber, yaw and axle height

The large area detector onboard the eXTP mission

The Large Area Detector (LAD) is the high-throughput, spectral-timing instrument onboard the eXTP mission, a flagship mission of the Chinese Academy of Sciences and the China National Space Administration, with a large European participation coordinated by Italy and Spain. The eXTP mission is currently performing its phase B study, with a target launch at the end-2027. The eXTP scientific payload includes four instruments (SFA, PFA, LAD and WFM) offering unprecedented simultaneous wide-band X-ray timing and polarimetry sensitivity. The LAD instrument is based on the design originally proposed for the LOFT mission. It envisages a deployed 3.2 m2 effective area in the 2-30 keV energy range, achieved through the technology of the large-area Silicon Drift Detectors - offering a spectral resolution of up to 200 eV FWHM at 6 keV - and of capillary plate collimators - limiting the field of view to about 1 degree. In this paper we will provide an overview of the LAD instrument design, its current status of development and anticipated performance

The enhanced x-ray timing and polarimetry mission – eXTP: an update on its scientific cases, mission profile and development status

The enhanced x-ray timing and polarimetry mission (eXTP) is a flagship observatory for x-ray timing, spectroscopy and polarimetry developed by an international consortium. Thanks to its very large collecting area, good spectral resolution and unprecedented polarimetry capabilities, eXTP will explore the properties of matter and the propagation of light in the most extreme conditions found in the universe. eXTP will, in addition, be a powerful x-ray observatory. The mission will continuously monitor the x-ray sky, and will enable multi-wavelength and multi-messenger studies. The mission is currently in phase B, which will be completed in the middle of 2022