Sökning: "Aeronautical Engineering"

Visar resultat 1 - 5 av 19 uppsatser innehållade orden Aeronautical Engineering.

  1. 1. Weight prediction of flight control subsystem

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Joel Lundahl; [2022]
    Nyckelord :Aeronautical engineering; aircraft; fighter jet; flight control system; FCS; weight prediction; early weight prediction; hydraulic system; control surfaces; actuator; subsystem; weight estimation; Flygteknik; flygplan; militärflygplan; stridsflygplan; styrsystem; viktprediktering; tidig viktprediktering; hydraulsystem; styrroder; styraktuatorer; aktuator; delsystem; viktuppskattning; metod;

    Sammanfattning : A common dilemma in aircraft design is the importance of knowing weight characteristics at early design stages, since sizing of many important components is dependent on these. Yet precise weight data cannot be determined until the aircraft and its subsystems have been designed in detail. LÄS MER

  3. 2. Development of a CFD Boundary Condition to Simulate a Perforated Surface

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

    Författare :Medet Kiflemariam; [2021]
    Nyckelord :Computational Fluid Dynamics; CFD; Boundary Condition; Bleed; Aerospace Engineering; Aeronautical Engineering; Physics;

    Sammanfattning : In aircraft with jet propulsion engine intakes at supersonic speed, strong pressure waves referred to as shockwaves occur, which may interact with any present boundary layers along the intake surface. The adverse pressure gradients associated with Shock Wave-Boundary Layer Interaction (SWBLI) may cause boundary layer flow separation, which can result in disturbances of the flow that can be harmful to the device or decrease engine performance. LÄS MER

  4. 3. Development of a CFD model and methodology for the internal flow simulation in a hydrogen-powered UAV

    Master-uppsats, KTH/Flygdynamik

    Författare :Alessandro Porcarelli; [2021]
    Nyckelord :Fluid-dynamics; Internal Flow; Scalar Transport; UAV; Fuel Cells; OpenFOAM; Pointwise; Vätskedynamik; internt flöde; skalär transport; UAV; bränsleceller; OpenFOAM; Pointwise;

    Sammanfattning : In the context of an aviation industry whose top priority is to face the sustainability challenge, the growing civil UAV branch is not an exception. Hydrogen-powered UAVs equipped with PEM (Polymer Electrolyte Membrane) fuel cells are more and more frequently identified as the most convincing and promising technology, particularly for long-endurance mission requirements. LÄS MER

  5. 4. Improving Validation & Verification data management by deploying a life cycle management tool

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Bastien Francomme; [2020]
    Nyckelord :;

    Sammanfattning : Managing data can be a challenge for large scale projects involving dozens of collaborators with different expertise. Data could be requirements, test procedures or product breakdown structures (PBS) for example. LÄS MER

  7. 5. Examine the Boarding System for an Amphibious Electric Vehicle

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Lukas Hedenstedt; Martin Engström; [2020]
    Nyckelord :;

    Sammanfattning : This project is derived from a project started by the In stitution Aeronautical & Vehicle Engineering at Kungliga Tekniska Högskolan on behalf of Ivan Stenius. The purpose was to examine the boarding of the existing amphibious vehicle called NEWT and how to optimize it. LÄS MER