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Showing result 11 - 15 of 135 essays matching the above criteria.

  1. 11. Aerodynamic Optimization of Low Observable Engine Intake Duct

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Laszlo Vimlati; [2022]
    Keywords : NSGA-II; CFD; Air Intake; S-Duct; Optimization; Pressure Recovery; Distortion.; NSGA-II; CFD; Intagskanal; Optimering; Tryckåtervinst; Flödesdistorsion.;

    Abstract : An aerodynamic shape optimization procedure was performed on a low observable engineintake duct. The intake duct was fixed in its throat and aerodynamic interface plane (AIP)sections, while leaving up to 7 design parameters free to deformation in the centroid curveand mid section profile. READ MORE

  3. 12. Electrical Propulsion System Design of a Blended Wing Body UAV

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Kevin Azad; Felix Fungula; [2022]
    Keywords : Aerospace; Aviation; Blended Wing Body; Electrical; Green Raven; Propeller; Propulsion; UAV;

    Abstract : The conventional tube-and-wing aircraft has been around since the 1950s, with little to no innovative progress being made towards redesigning the conventional aircraft. The blended wing body (BWB) shape fuses the wing of the aircraft with the fuselage increasing structural strength while also increasing potential surface area to create lift, making it more efficient than conventional wing shapes. READ MORE

  4. 13. Conceptual Design of an Ekranoplan UAV

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Sheng-An Yu; [2022]
    Keywords : Ekranoplan; Unmanned ground effect vehicle UGEV ; vertical take-off and landing VTOL ; aircraft design; Ekranoplan; Obemannad markeffektfarkost UGEV ; Vertikal Start och Landning VTOL ; Flygplansdesign;

    Abstract : Unmanned aerial system (UAS) has developed into an important platform of high-altitude photography, which can be applied in animal studies, pollution forensics and geographic monitoring. This thesis work aims to design a unmanned ground effect vehicle (UGEV) in order to provide a much better and flexible solution to future applications. READ MORE

  5. 14. Three-way catalyst calibration and system modelling for CNG engine exhaust aftertreatment

    University essay from KTH/Kemiteknik

    Author : Khyati Parikh; [2022]
    Keywords : Three-way catalysts; 1D-Modelling; Kinetic parameters; Calibration; AVL Cruise M; Trevägskatalysatorer; 1D-modellering; Kinetiska parametrar; Kalibrering; AVL Cruise M;

    Abstract : Detta projekt behandlar metodutveckling för att modellera en trevägskatalysator som skulle kunna användas vidare för att uppskatta utsläppen från en Ottomotor. Modellen är byggd i AVL Cruise M för att bestämma omvandlingarna för de tre lagstiftade föroreningarna kolmonoxid, kväveoxider (NOx) och metan baserat på reaktioner som sker i trevägskatalysatorer. READ MORE

  6. 15. Adhesive bonding of fiber laminate patch to sandwich-structured composite

    University essay from Lunds universitet/Materialteknik

    Author : Daniel Nesic; [2022]
    Keywords : Adhesive bonding; Shipbuilding; Composite construction; Finite element method in structural mechanics; Fiber reinforced plastics; Optical microscopy analysis; Fractography; Technology and Engineering;

    Abstract : By using composites when constructing vehicles, lighter weight and thus better performance can be achieved. Composites are widely used in airplanes and small boats, but has yet to be incorporated in larger ships such as freighters and cruise ships. The main hindrance for its use is the lack of practical knowledge and experience. READ MORE